10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2016

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ___________ to ___________.

Commission File Number: 001-34811

Ameresco, Inc.

(Exact name of registrant as specified in its charter)

Delaware	04-3512838
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)
111 Speen Street, Suite 410 Framingham, Massachusetts	01701
(Address of Principal Executive Offices)	(Zip Code)

(508) 661-2200

(Registrant’s Telephone Number, Including Area Code)

N/A

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes þ No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer o	Accelerated Filer  þ	Non-accelerated filer  o	Smaller reporting company o
		(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No þ

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class	Shares outstanding as of October 28, 2016
Class A Common Stock, $0.0001 par value per share	27,849,019
Class B Common Stock, $0.0001 par value per share	18,000,000

AMERESCO, INC.

QUARTERLY REPORT ON FORM 10-Q

FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2016

TABLE OF CONTENTS

	Page
PART I - FINANCIAL INFORMATION
Item 1. Condensed Consolidated Financial Statements
Consolidated Balance Sheets at September 30, 2016 (Unaudited) and December 31, 2015	1
Consolidated Statements of Income for the three and nine months ended September 30, 2016 and 2015 (Unaudited)	3
Consolidated Statements of Comprehensive Income (Loss) for the three and nine months ended September 30, 2016 and 2015 (Unaudited)	4
Consolidated Statement of Changes in Redeemable Non-Controlling Interest and Stockholders’ Equity for the nine months ended September 30, 2016 (Unaudited)	5
Consolidated Statements of Cash Flows for the nine months ended September 30, 2016 and 2015 (Unaudited)	6
Notes to Condensed Consolidated Financial Statements (Unaudited)	8
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	27
Item 3. Quantitative and Qualitative Disclosures About Market Risk	41
Item 4. Controls and Procedures	41
PART II - OTHER INFORMATION
Item 1. Legal Proceedings	43
Item 1A. Risk Factors	43
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	43
Item 6. Exhibits	43
Signatures	44
Exhibit Index	45

PART I - FINANCIAL INFORMATION

Item 1. Condensed Consolidated Financial Statements

AMERESCO, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands, except share and per share amounts)

	September 30,		December 31,
	2016		2015
	(Unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	18,357	$	21,645
Restricted cash	12,449		16,236
Accounts receivable, net	80,737		73,372
Accounts receivable retainage, net	21,797		21,454
Costs and estimated earnings in excess of billings	60,085		88,334
Inventory, net	13,388		13,223
Prepaid expenses and other current assets	14,728		11,745
Income tax receivable	—		2,151
Project development costs	15,037		15,538
Total current assets	236,578		263,698
Federal ESPC receivable	124,888		125,804
Property and equipment, net	5,637		5,328
Project assets, net	279,257		244,309
Goodwill	58,361		59,085
Intangible assets, net	4,615		6,770
Other assets	24,758		18,446
Total assets	$	734,094	$	723,440
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current portions of long-term debt and capital lease liabilities	$	15,246	$	13,427
Accounts payable	125,014		114,759
Accrued expenses and other current liabilities	22,403		21,983
Billings in excess of cost and estimated earnings	18,723		28,744
Income taxes payable	631		810
Total current liabilities	182,017		179,723
Long-term debt and capital lease liabilities, less current portions and net of deferred financing fees	113,596		100,490
Federal ESPC liabilities	108,039		122,040
Deferred income taxes	2,417		4,010
Deferred grant income	7,877		8,291
Other liabilities	21,127		18,854
Commitments and contingencies (Note 5)
Redeemable non-controlling interest	6,797		490

The accompanying notes are an integral part of these condensed consolidated financial statements.

1

AMERESCO, INC.
CONSOLIDATED BALANCE SHEETS — (Continued)
(in thousands, except share and per share amounts)
	September 30,			December 31,
	2016			2015
	(Unaudited)
Stockholders’ equity:
Preferred stock, $0.0001 par value, 5,000,000 shares authorized, no shares issued and outstanding at September 30, 2016 and December 31, 2015	$	—		$	—
Class A common stock, $0.0001 par value, 500,000,000 shares authorized, 28,980,284 shares issued and 28,059,340 shares outstanding at September 30, 2016, 28,684,392 shares issued and outstanding at December 31, 2015	3			3
Class B common stock, $0.0001 par value, 144,000,000 shares authorized, 18,000,000 shares issued and outstanding at September 30, 2016 and December 31, 2015	2			2
Additional paid-in capital	112,366			110,311
Retained earnings	193,217			184,454
Accumulated other comprehensive loss, net	(8,913		)	(5,228		)
Less - treasury stock, at cost, 920,944 shares at September 30, 2016	(4,451		)	—
Total equity	292,224			289,542
Total liabilities, redeemable non-controlling interest and equity	$	734,094		$	723,440

The accompanying notes are an integral part of these condensed consolidated financial statements.

2

AMERESCO, INC.

CONSOLIDATED STATEMENTS OF INCOME

(in thousands, except share and per share amounts)

(Unaudited)

	Three Months Ended September 30,					Nine Months Ended September 30,
	2016			2015		2016		2015
Revenues	$	180,598		$	189,142	$	477,002	$	457,064
Cost of revenues	141,803			152,849		378,675		370,232
Gross profit	38,795			36,293		98,327		86,832
Selling, general and administrative expenses	28,852			26,623		81,880		76,506
Operating income	9,943			9,670		16,447		10,326
Other expenses, net	2,268			2,149		4,961		6,158
Income before provision for income taxes	7,675			7,521		11,486		4,168
Income tax provision	1,865			3,343		2,872		2,187
Net income	5,810			4,178		8,614		1,981
Net loss (income) attributable to redeemable non-controlling interest	(95		)	—		149		—
Net income attributable to Ameresco, Inc.	$	5,715		$	4,178	$	8,763	$	1,981
Net income per share attributable to common shareholders:
Basic	$	0.12		$	0.09	$	0.19	$	0.04
Diluted	$	0.12		$	0.09	$	0.19	$	0.04
Weighted average common shares outstanding:
Basic	46,360,575			46,517,638		46,606,494		46,473,375
Diluted	46,430,163			48,056,359		46,669,036		47,623,042

The accompanying notes are an integral part of these condensed consolidated financial statements.

3

AMERESCO, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(in thousands)

(Unaudited)

	Three Months Ended September 30,
	2016			2015
Net income	$	5,810		$	4,178
Other comprehensive income (loss):
Unrealized gain (loss) from interest rate hedge, net of tax (provision) benefit of $(100) and $706, respectively	398			(1,429		)
Foreign currency translation adjustments	(99		)	(1,222		)
Total other comprehensive income (loss)	299			(2,651		)
Comprehensive income	6,109			1,527
Comprehensive income attributable to redeemable non-controlling interest	(95		)	—
Comprehensive income attributable to Ameresco, Inc.	$	6,014		$	1,527
	Nine Months Ended September 30,
	2016			2015
Net income	$	8,614		$	1,981
Other comprehensive (loss) income:
Unrealized loss from interest rate hedge, net of tax benefit of $1,256 and $629, respectively	(2,227		)	(1,043		)
Foreign currency translation adjustments	(1,458		)	(1,983		)
Total other comprehensive loss	(3,685		)	(3,026		)
Comprehensive income (loss)	4,929			(1,045		)
Comprehensive loss attributable to redeemable non-controlling interest	149			—
Comprehensive income (loss) attributable to Ameresco, Inc.	$	5,078		$	(1,045	)

The accompanying notes are an integral part of these condensed consolidated financial statements.

4

AMERESCO, INC.

CONSOLIDATED STATEMENT OF CHANGES IN REDEEMABLE NON-CONTROLLING INTEREST AND STOCKHOLDERS’ EQUITY

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2016

(in thousands, except share amounts)

(Unaudited)

															Accumulated
	Redeemable										Additional				Other							Total
	Non-Controlling			Class A Common Stock				Class B Common Stock			Paid-in		Retained		Comprehensive			Treasury Stock				Stockholders’
	Interest			Shares		Amount		Shares	Amount		Capital		Earnings		Loss			Shares	Amount			Equity
Balance, December 31, 2015	$	490		28,684,392		$	3	18,000,000	$	2	$	110,311	$	184,454	$	(5,228	)	—	$	—		$	289,542
Exercise of stock options	—			295,892		—		—	—		969		—		—			—	—			969
Stock-based compensation expense	—			—		—		—	—		1,086		—		—			—	—			1,086
Open market purchase of common shares	—			(920,944	)	—		—	—		—		—		—			920,944	(4,451		)	(4,451		)
Unrealized loss from interest rate hedge, net	—			—		—		—	—		—		—		(2,227		)	—	—			(2,227		)
Foreign currency translation adjustment	—			—		—		—	—		—		—		(1,458		)	—	—			(1,458		)
Contributions from redeemable non-controlling interest, net	6,456			—		—		—	—		—		—		—							—
Net (loss) income	(149		)	—		—		—	—		—		8,763		—			—	—			8,763
Balance, September 30, 2016	$	6,797		28,059,340		$	3	18,000,000	$	2	$	112,366	$	193,217	$	(8,913	)	920,944	$	(4,451	)	$	292,224

The accompanying notes are an integral part of these condensed consolidated financial statements.

5

AMERESCO, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(Unaudited)

	Nine Months Ended September 30,
	2016			2015
Cash flows from operating activities:
Net income	$	8,614		$	1,981
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation of project assets	14,139			12,115
Depreciation of property and equipment	2,300			2,349
Amortization of deferred financing fees	994			850
Amortization of intangible assets	1,793			3,041
Provision for bad debts	5,137			239
Unrealized gain on interest rate swaps	(227		)	(277		)
Stock-based compensation expense	1,086			1,367
Deferred income taxes	(344		)	(2,920		)
Unrealized foreign exchange (gain) loss	(277		)	1,324
Changes in operating assets and liabilities:
Restricted cash	(4,592		)	(2,216		)
Accounts receivable	(7,136		)	(5,258		)
Accounts receivable retainage	(403		)	(1,501		)
Federal ESPC receivable	(83,431		)	(50,555		)
Inventory, net	(165		)	(3,347		)
Costs and estimated earnings in excess of billings	28,119			(10,792		)
Prepaid expenses and other current assets	(3,292		)	(4,039		)
Project development costs	838			(4,999		)
Other assets	(137		)	(2,807		)
Accounts payable, accrued expenses and other current liabilities	(1,225		)	22,396
Billings in excess of cost and estimated earnings	(9,510		)	7,329
Other liabilities	(2,005		)	(573		)
Income taxes payable	2,348			3,674
Cash flows from operating activities	(47,376		)	(32,619		)
Cash flows from investing activities:
Purchases of property and equipment	(2,696		)	(1,040		)
Purchases of project assets	(45,205		)	(29,932		)
Proceeds from sale of assets	—			852
Cash flows from investing activities	$	(47,901	)	$	(30,120	)
The accompanying notes are an integral part of these condensed consolidated financial statements.

6

AMERESCO, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS — (Continued)
(in thousands)
(Unaudited)
	Nine Months Ended September 30,
	2016			2015
Cash flows from financing activities:
Payments of financing fees	$	(1,266	)	$	(1,894	)
Proceeds from exercises of options	969			611
Repurchase of common stock	(4,451		)	—
Proceeds (repayments) from senior secured credit facility, net	7,501			(5,000		)
Proceeds from long-term debt financing	7,803			4,584
Proceeds from Federal ESPC projects	65,075			61,846
Proceeds from sale-leaseback financing	17,045			7,581
Non-controlling interest	—			(116		)
Proceeds from investment by redeemable non-controlling interest, net	6,456			—
Restricted cash	2,952			(74		)
Payments on long-term debt	(9,246		)	(9,051		)
Cash flows from financing activities	92,838			58,487
Effect of exchange rate changes on cash	(849		)	1,746
Net decrease in cash and cash equivalents	(3,288		)	(2,506		)
Cash and cash equivalents, beginning of period	21,645			23,762
Cash and cash equivalents, end of period	$	18,357		$	21,256
Supplemental disclosures of cash flow information:
Cash paid for interest	$	4,956		$	4,197
Cash paid for income taxes	$	2,940		$	1,204
Non-cash Federal ESPC settlement	$	79,075		$	26,320
Accrued purchases of project assets	$	15,869		$	13,241

The accompanying notes are an integral part of these condensed consolidated financial statements.

7

AMERESCO, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

(in thousands, except share and per share amounts)

1. DESCRIPTION OF BUSINESS

Ameresco, Inc. (including its subsidiaries, the “Company”) was organized as a Delaware corporation on April 25, 2000. The Company is a provider of energy efficiency solutions for facilities throughout North America. The Company provides solutions, both products and services, that enable customers to reduce their energy consumption, lower their operating and maintenance costs and realize environmental benefits. The Company’s comprehensive set of services includes upgrades to a facility’s energy infrastructure and the construction and operation of small-scale renewable energy plants. It also sells certain photovoltaic (“PV”) equipment worldwide. The Company operates in the United States, Canada and Europe.

The Company is compensated through a variety of methods, including: 1) direct payments based on fee-for-services contracts (utilizing lump-sum or cost-plus pricing methodologies); 2) the sale of energy from the Company’s operating assets; and 3) direct payment for PV equipment and systems.

The condensed consolidated financial statements as of September 30, 2016, and for the three and nine months ended September 30, 2016 and 2015, are unaudited. In addition, certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) have been condensed or omitted. The interim condensed consolidated financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair presentation in conformity with GAAP. The interim condensed consolidated financial statements, and notes thereto, should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2015, and notes thereto, included in the Company’s annual report on Form 10-K for the year ended December 31, 2015 filed with the Securities and Exchange Commission on March 4, 2016. The results of operations for the interim periods should not be considered indicative of results to be expected for the full year.

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Certain amounts have been reclassified in the prior year financial statements to conform to the current year presentation.

Principles of Consolidation

The accompanying condensed consolidated financial statements include the accounts of Ameresco, Inc. and its subsidiaries. All significant intercompany accounts and transactions have been eliminated. The Company prepares its financial statements in conformity with GAAP.

Use of Estimates

GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. The most significant estimates and assumptions used in these condensed consolidated financial statements relate to management’s estimates of final construction contract profit in accordance with accounting for long-term contracts, allowance for doubtful accounts, inventory reserves, project development costs, fair value of derivative financial instruments and stock-based awards, impairment of long-lived assets, income taxes, self insurance reserves and any potential liability in conjunction with certain commitments and contingencies. Actual results could differ from those estimates.

The Company is self-insured for employee health insurance. The maximum exposure in fiscal year 2016 under the plan is $100 per covered participant, after which reinsurance takes effect. The liability for unpaid claims and associated expenses, including incurred but not reported claims, is determined by management and reflected in the Company’s consolidated balance sheets in accrued expenses and other current liabilities. The liability is calculated based on historical data, which considers both the frequency and settlement amount of claims. The Company’s estimated accrual for this liability could be different than its ultimate obligation if variables such as the frequency or amount of future claims differ significantly from management’s assumptions.

Cash and Cash Equivalents

Cash and cash equivalents includes cash on deposit, overnight repurchase agreements and amounts invested in highly liquid money market funds. Cash equivalents consist of short term investments with original maturities of three months or less. The Company maintains accounts with financial institutions and the balances in such accounts, at times, exceed federally insured limits. This credit risk is divided among a number of financial institutions that management believes to be of high quality. The carrying amount of cash and cash equivalents approximates their fair value measured using level one inputs per the fair value hierarchy as defined in Note 6.

8

AMERESCO, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) - (Continued)

(in thousands, except share and per share amounts)

Restricted Cash

Restricted cash consists of cash and cash equivalents held in an escrow account in association with construction draws for energy savings performance contracts (“ESPCs”), construction of project assets, operations and maintenance (“O&M”) reserve accounts and cash collateralized letters of credit as well as cash required under term loans to be maintained in debt service reserve accounts until all obligations have been indefeasibly paid in full. These accounts are primarily invested in highly liquid money market funds. The carrying amount of the cash and cash equivalents in these accounts approximates their fair value measured using level one inputs per the fair value hierarchy as defined in Note 6. Restricted cash also includes funds held for clients, which represent assets that, based upon the Company’s intent, are restricted for use solely for the purposes of satisfying the obligations to remit funds to third parties, primarily utility service providers, relating to the Company’s enterprise energy management services. As of September 30, 2016 and December 31, 2015, the Company classified the non-current portion of restricted cash of $19,333 and $13,515, respectively, in other assets on its consolidated balance sheets.

Accounts Receivable

Accounts receivable are stated at the amount management expects to collect from outstanding balances. An allowance for doubtful accounts is provided for those accounts receivable considered to be uncollectible based upon historical experience and management’s evaluation of outstanding accounts receivable. Bad debts are written off against the allowance when identified.

Changes in the allowance for doubtful accounts are as follows:

	Nine Months Ended September 30,
	2016		2015
Allowance for doubtful accounts, beginning of period	$	3,729	$	2,851
Charges to costs and expenses	4,057		239
Account write-offs and other	195		(295		)
Allowance for doubtful accounts, end of period	$	7,981	$	2,795

During the nine months ended September 30, 2016, the Company reserved for certain assets related to a customer who declared bankruptcy. Of this amount, $2,394 was recorded as an allowance for doubtful accounts in accounts receivable, net. In addition, the Company recorded a $476 charge to write-off costs and estimated earnings in excess of billings and a $325 charge for project costs incurred during the first quarter of 2016. The Company has an additional exposure of $758 for the remaining receivables. During the nine months ended September 30, 2016, the Company also reserved for certain assets in its Canada segment totaling $1,934 due to collectability concerns as a result of its previously disclosed restructuring efforts. This reserve included $1,655 for doubtful accounts in accounts receivable, net and $279 reserved against accounts receivable retainage, net.

Accounts Receivable Retainage

Accounts receivable retainage represents amounts due from customers, but where payments are withheld contractually until certain construction milestones are met. Amounts retained typically range from 5% to 10% of the total invoice. The Company classifies as a current asset those retainages that are expected to be billed in the next twelve months. During the year ended December 31, 2015, based upon an evaluation by management, the Company recorded a reserve totaling $1,282 against the accounts receivable retainage balance for amounts determined to be potentially uncollectible. For the nine months ended September 30, 2016, the Company recorded an additional reserve of $279 against the remaining accounts receivable retainage, net balance.

Inventory

Inventories, which consist primarily of PV solar panels, batteries and related accessories, are stated at the lower of cost (“first-in, first-out” method) or net realizable value (determined as the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation). Provisions have been made to reduce the carrying value of inventory to the net realizable value.

Prepaid Expenses

Prepaid expenses consist primarily of short-term prepaid expenditures that will amortize within one year.

9

AMERESCO, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) - (Continued)

(in thousands, except share and per share amounts)

Federal ESPC Receivable

Federal ESPC receivable represents the amount to be paid by various federal government agencies for work performed and earned by the Company under specific ESPCs. The Company assigns certain of its rights to receive those payments to third-party investors that provide construction and permanent financing for such contracts. The receivable is recognized as revenue as each project is constructed. Upon completion and acceptance of the project by the government, typically within 24 months of construction commencement, the assigned ESPC receivable from the government and corresponding ESPC liability are eliminated from the Company’s condensed consolidated financial statements.

Project Development Costs

The Company capitalizes as project development costs only those costs incurred in connection with the development of energy projects, primarily direct labor, interest costs, outside contractor services, consulting fees, legal fees and travel, if incurred after a point in time where the realization of related revenue becomes probable. Project development costs incurred prior to the probable realization of revenue are expensed as incurred. The Company classifies as a current asset those project development efforts that are expected to proceed to construction activity in the twelve months that follow. The Company periodically reviews these balances and writes off any amounts where the realization of the related revenue is no longer probable.

Property and Equipment

Property and equipment consists primarily of office and computer equipment, and is recorded at cost. Major additions and improvements are capitalized as additions to the property and equipment accounts, while replacements, maintenance and repairs that do not improve or extend the life of the respective assets are expensed as incurred. Depreciation and amortization of property and equipment are computed on a straight-line basis over the following estimated useful lives:

Asset Classification	Estimated Useful Life
Furniture and office equipment	Five years
Computer equipment and software costs	Three to five years
Leasehold improvements	Lesser of term of lease or five years
Automobiles	Five years
Land	Unlimited

Project Assets

Project assets consist of costs of materials, direct labor, interest costs, outside contract services and project development costs incurred in connection with the construction of small-scale renewable energy plants that the Company owns and the implementation of energy savings contracts. These amounts are capitalized and amortized to cost of revenues in the Company’s consolidated statements of income on a straight line basis over the lives of the related assets or the terms of the related contracts.

The Company capitalizes interest costs relating to construction financing during the period of construction. Capitalized interest is included in project assets, net in the Company’s consolidated balance sheets. Capitalized interest is amortized to cost of revenues in the Company’s consolidated statements of income on a straight line basis over the useful life of the associated project asset. There was $289 and $232 in interest capitalized for the three months ended September 30, 2016 and 2015, respectively. There was $616 and $480 in interest capitalized for the nine months ended September 30, 2016 and 2015, respectively.

Routine maintenance costs are expensed in the current year’s consolidated statements of income to the extent that they do not extend the life of the asset. Major maintenance, upgrades and overhauls are required for certain components of the Company’s assets. In these instances, the costs associated with these upgrades are capitalized and are depreciated over the shorter of the remaining life of the asset or the period until the next required major maintenance or overhaul. Gains or losses on disposal of property and equipment are reflected in selling, general and administrative expenses in the consolidated statements of income.

The Company evaluates its long-lived assets for impairment as events or changes in circumstances indicate the carrying value of these assets may not be fully recoverable. Examples of such triggering events applicable to the Company’s assets include a significant decrease in the market price of a long-lived asset or asset group or a current-period operating or cash flow

10

AMERESCO, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) - (Continued)

(in thousands, except share and per share amounts)

loss combined with a history of operating or cash flow losses or a projection or forecast that demonstrates continuing losses associated with the use of a long-lived asset or asset group.

The Company evaluates recoverability of long-lived assets to be held and used by estimating the undiscounted future cash flows before interest associated with the expected uses and eventual disposition of those assets. When these comparisons indicate that the carrying value of those assets is greater than the undiscounted cash flows, the Company recognizes an impairment loss for the amount that the carrying value exceeds the fair value.

From time to time, the Company applies for and receives cash grant awards from the U.S. Treasury Department (the “Treasury”) under Section 1603 of the American Recovery and Reinvestment Act of 2009 (the “Act”). The Act authorized the Treasury to make payments to eligible persons who place in service qualifying renewable energy projects. The grants are paid in lieu of investment tax credits. All of the cash proceeds from the grants were used and recorded as a reduction in the cost basis of the applicable project assets. If the Company disposes of the property, or the property ceases to qualify as specified energy property, within five years from the date the property is placed in service, then a prorated portion of the Section 1603 payment must be repaid.

The Company did not receive anySection 1603 grants during the nine months ended September 30, 2016orSeptember 30, 2015.

For tax purposes, the Section 1603 payments are not included in federal and certain state taxable income and the basis of the property is reduced by 50% of the payment received. Deferred grant income of $7,877 and $8,291 recorded in the accompanying consolidated balance sheets as of September 30, 2016 and December 31,2015, respectively, represents the benefit of the basis difference to be amortized to income tax expense over the life of the related property.

Deferred Financing Fees

Deferred financing fees relate to the external costs incurred to obtain financing for the Company. Deferred financing fees are amortized over the respective term of the financing using the effective interest method, with the exception of the Company’s revolving credit facility, as discussed in Note 11, for which deferred financing fees are amortized on a straight-line basis over the term of the agreement. Deferred financing fees are presented on the consolidated balance sheets as a reduction to long-term debt and capital lease liabilities.

Goodwill and Intangible Assets

The Company has classified as goodwill the amounts paid in excess of fair value of the net assets (including tax attributes) of companies acquired in purchase transactions. The Company has recorded intangible assets related to customer contracts, customer relationships, non-compete agreements, trade names and technology, each with defined useful lives. The Company assesses the impairment of goodwill and intangible assets that have indefinite lives on an annual basis (December 31^st) and whenever events or changes in circumstances indicate that the carrying value of the asset may not be recoverable. The Company would record an impairment charge if such an assessment were to indicate that the fair value of such assets was less than their carrying values. Judgment is required in determining whether an event has occurred that may impair the value of goodwill or identifiable intangible assets.

Factors that could indicate that an impairment may exist include significant under-performance relative to plan or long-term projections, significant changes in business strategy, significant negative industry or economic trends or a significant decline in the base price of the Company’s publicly traded stock for a sustained period of time. Although the Company believes goodwill and intangible assets are appropriately stated in the accompanying condensed consolidated financial statements, changes in strategy or market conditions could significantly impact these judgments and require an adjustment to the recorded balance.

See Note 3 for additional disclosures.

Other Assets

Other assets consist primarily of notes and contracts receivable due to the Company from various customers and non-current restricted cash. Other assets also include the non-current portion of project development costs, accounts receivable retainages, sale-leaseback deferred loss and deferred contract costs.

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AMERESCO, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) - (Continued)

(in thousands, except share and per share amounts)

Asset Retirement Obligations

The Company recognizes a liability for the fair value of required asset retirement obligations (“AROs”) when such obligations are incurred. The liability is estimated on a number of assumptions requiring management’s judgment, including equipment removal costs, site restoration costs, salvage costs, cost inflation rates and discount rates and is credited to its projected future value over time. The capitalized asset is depreciated using the convention of depreciation of plant assets. Upon satisfaction of the ARO conditions, any difference between the recorded ARO liability and the actual retirement cost incurred is recognized as an operating gain or loss in the consolidated statements of income. As of September 30, 2016 and December 31,2015, the Company had no ARO liabilities recorded.

Federal ESPC Liabilities

Federal ESPC liabilities represent the advances received from third-party investors under agreements to finance certain energy savings performance contract projects with various federal government agencies. Upon completion and acceptance of the project by the government, typically within 24 months of construction commencement, the ESPC receivable from the government and corresponding ESPC liability is eliminated from the Company’s consolidated balance sheet. Until recourse to the Company ceases for the ESPC receivables transferred to the investor, upon final acceptance of the work by the government customer, the Company remains the primary obligor for financing received.

Sale-Leaseback

During the first quarter of 2015, the Company entered into an agreement with an investor which gives the Company the option to sell and contemporaneously lease back solar photovoltaic (“solar-PV”) projects. In September 2016, the Company amended its agreement with the investor whereas the investor has committed up to a maximum combined funding amount of $100,000 through June 30, 2017 on certain projects. During the quarter ended September 30, 2016, the Company sold one solar-PV project and in return received $6,037 under the agreement. During the quarter ended June 30, 2016, the Company sold three solar-PV projects and in return received $7,467 under the agreement. During the quarter ended March 31, 2016, the Company sold two solar-PV projects and in return received $3,541 under the agreement. During the quarter ended March 31, 2015, the Company sold two solar-PV projects and in return received $7,581 under the agreement. During the quarter ended December 31, 2015, the Company sold one solar-PV project and in return received $4,925 under the agreement.

As part of the agreement, the Company is a party to a master lease agreement that provides for the sale of solar-PV projects to a third-party investor and the simultaneous leaseback of the projects, which the Company then operates and maintains, recognizing revenue through the sale of the electricity and solar renewable energy credits generated by these projects. In sale-leaseback arrangements, the Company first determines whether the solar-PV project under the sale-leaseback arrangement is “integral equipment.” A solar-PV project is determined to be integral equipment when the cost to remove the project from its existing location, including the shipping and reinstallation costs of the solar-PV project at the new site, including any diminution in fair value, exceeds 10% of the fair value of the solar-PV project at the time of its original installation. When the leaseback arrangement expires, the Company has the option to purchase the solar-PV project for the then fair market value or, in certain circumstances, renew the lease for an extended term. All solar-PV projects sold to date under the sale-leaseback program have been determined by the Company not to be integral equipment as the cost to remove the project from its existing location would not exceed 10% of its original fair value.

For solar-PV projects that the Company has determined not to be integral equipment, the Company then determines if the leaseback should be classified as a capital lease or an operating lease. All solar-PV projects sold to date under the sale-leaseback program have been determined by the Company to be capital leases. For leasebacks classified as capital leases, the Company initially records a capital lease asset and capital lease obligation in its consolidated balance sheet equal to the lower of the present value of the Company’s future minimum leaseback payments or the fair value of the solar-PV project. For capital leasebacks, the Company defers any gain or loss, representing the excess or shortfall of cash received from the investor compared to the net book value of the asset in the Company’s consolidated balance sheet at the time of the sale. The Company records the long term portion of any deferred gain or loss in other liabilities and other assets, respectively, and the current portion of any deferred gain or loss in accrued expenses and other current liabilities and prepaid expenses and other current assets, respectively, in its consolidated balance sheet and amortizes the deferred amounts over the lease term in cost of revenues in its consolidated statements of income. During the quarter-ended September 30, 2016, the Company recorded $333 of deferred gain related to sale-leasebacks which will be recognized straight-line over the 25 year lease term. During the quarter-ended June 30, 2016, the Company recorded $124 of deferred loss related to sale-leasebacks which will be recognized straight-line over the 20 year lease terms. During the quarter-ended December 31, 2015, the Company recorded $1,421 of deferred loss related to sale-leasebacks which will be recognized straight-line over the 20 year lease terms. During the nine months ended

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) - (Continued)

(in thousands, except share and per share amounts)

September 30, 2016 and September 30, 2015, the Company recorded $1,040 and $1,029 of deferred gain, respectively. which will be recognized straight-line over the 20 to 25 year lease terms. The Company records the capital leaseback assets in project assets, net in its consolidated balance sheets. The Company records the capital lease liabilities in long-term debt and capital lease liabilities, less current portions and deferred financing fees, net in its consolidated balance sheets. During the quarters ended September 30, 2016 and September 30, 2015, the Company recorded $3,158 and $0 respectively, in capital lease assets and corresponding capital lease liabilities, and during the quarter ended December 31, 2015 the Company recorded $3,299 in capital lease assets and corresponding capital lease liabilities. During the nine months ended September 30, 2016 and September 30, 2015, the Company recorded $8,830 and $3,511 respectively, in capital lease assets and corresponding capital lease liabilities. The capital lease assets will be amortized straight-line over the 20 to 25 year lease terms. Leaseback payments made to the lessor, related to the capital lease liabilities, are allocated between interest expense and a reduction to the sale-leaseback financing obligation. The initial lease term for the solar-PV project sold during the three months ended September 30, 2016 is 25 years with semi-annual leaseback payments due to the investor ranging from $2 to $397 over the lease term. The initial lease terms for the solar-PV projects sold during the nine months ended September 30, 2016 are 20 to 25 years with semi-annual leaseback payments due to the investor ranging from $2 to $397 over the lease term. The initial lease terms for the solar-PV projects sold during the year ended December 31, 2015 are 20 years with semi-annual leaseback payments due to the investor ranging from $7 to $348 over the lease term.

Other Liabilities

Other liabilities consist primarily of deferred revenue related to multi-year operation and maintenance contracts which expire at various dates through 2031. Other liabilities also include the fair value of derivatives and the long term portion of sale-leaseback deferred gains.

See Note 7 for additional disclosures.

Revenue Recognition

The Company derives revenues from energy efficiency and renewable energy products and services. Energy efficiency products and services include the design, engineering, and installation of equipment and other measures to improve the efficiency, and control the operation, of a facility’s energy infrastructure. Renewable energy products and services include the construction of small-scale plants that produce electricity, gas, heat or cooling from renewable sources of energy, the sale of such electricity, gas, heat or cooling from plants that the Company owns, and the sale and installation of solar energy products and systems.

Revenue from the installation or construction of projects is recognized on a percentage-of-completion basis. The percentage-of-completion for each project is determined on an actual cost-to-estimated final cost basis. Maintenance revenue is recognized as related services are performed. In accordance with industry practice, the Company includes in current assets and liabilities the amounts of receivables related to construction projects realizable and payable over a period in excess of one year. The revenue associated with contract change orders is recognized only when the authorization for the change order has been properly executed and the work has been performed.

When the estimate on a contract indicates a loss, or claims against costs incurred reduce the likelihood of recoverability of such costs, the Company records the entire expected loss immediately, regardless of the percentage of completion.

Billings in excess of cost and estimated earnings represents advanced billings on certain construction contracts. Costs and estimated earnings in excess of billings represent certain amounts under customer contracts that were earned and billable but not invoiced.

The Company sells certain products and services in bundled arrangements, where multiple products and/or services are involved. The Company divides bundled arrangements into separate deliverables and revenue is allocated to each deliverable based on the relative selling price. The relative selling price is determined using third-party evidence or management’s best estimate of selling price.

The Company recognizes revenue from the sale and delivery of products, including the output from renewable energy plants, when produced and delivered to the customer, in accordance with specific contract terms, provided that persuasive evidence of an arrangement exists, the Company’s price to the customer is fixed or determinable and collectability is reasonably assured.

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AMERESCO, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) - (Continued)

(in thousands, except share and per share amounts)

The Company recognizes revenues from O&M contracts, consulting services and enterprise energy management services as the related services are performed.

For a limited number of contracts under which the Company receives additional revenue based on a share of energy savings, such additional revenue is recognized as energy savings are generated.

Cost of Revenues

Cost of revenues include the cost of labor, materials, equipment, subcontracting and outside engineering that are required for the development and installation of projects, as well as preconstruction costs, sales incentives, associated travel, inventory obsolescence charges, amortization of intangible assets related to customer contracts and, if applicable, costs of procuring financing. A majority of the Company’s contracts have fixed price terms; however, in some cases the Company negotiates protections, such as a cost-plus structure, to mitigate the risk of rising prices for materials, services and equipment.

Cost of revenues also include the costs of maintaining and operating the small-scale renewable energy plants that the Company owns, including the cost of fuel (if any) and depreciation charges.

Income Taxes

The Company provides for income taxes based on the liability method. The Company provides for deferred income taxes based on the expected future tax consequences of differences between the financial statement basis and the tax basis of assets and liabilities calculated using the enacted tax rates in effect for the year in which the differences are expected to be reflected in the tax return.

The Company accounts for uncertain tax positions using a “more-likely-than-not” threshold for recognizing and resolving uncertain tax positions. The evaluation of uncertain tax positions is based on factors that include, but are not limited to, changes in tax law, the measurement of tax positions taken or expected to be taken in tax returns, the effective settlement of matters subject to audit, new audit activity and changes in facts or circumstances related to a tax position. The Company evaluates uncertain tax positions on a quarterly basis and adjusts the level of the liability to reflect any subsequent changes in the relevant facts surrounding the uncertain positions.

The Company’s liabilities for uncertain tax positions can be relieved only if the contingency becomes legally extinguished through either payment to the taxing authority or the expiration of the statute of limitations, the recognition of the benefits associated with the position meet the “more-likely-than-not” threshold or the liability becomes effectively settled through the examination process.

The Company considers matters to be effectively settled once the taxing authority has completed all of its required or expected examination procedures, including all appeals and administrative reviews; the Company has no plans to appeal or litigate any aspect of the tax position; and the Company believes that it is highly unlikely that the taxing authority would examine or re-examine the related tax position. The Company also accrues for potential interest and penalties, related to unrecognized tax benefits in income tax expense.

In November 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-17, which simplifies the presentation of deferred income taxes. The Company elected to early adopt ASU 2015-17 retrospectively in the fourth quarter of 2015. As a result, the Company has presented all deferred tax assets and liabilities as noncurrent in its consolidated balance sheet as of September 30, 2016 and December 31, 2015, respectively.

See Note 4 for additional information on the Company’s income taxes.

Foreign Currency

The local currency of the Company’s foreign operations is considered the functional currency of such operations. All assets and liabilities of the Company’s foreign operations are translated into U.S. dollars at period-end exchange rates. Income and expense items are translated at average exchange rates prevailing during the period. Translation adjustments are accumulated as a separate component of stockholders’ equity. Foreign currency translation gains and losses are reported in the consolidated statements of comprehensive income (loss). Foreign currency transaction gains and losses are reported in the consolidated statements of income.

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AMERESCO, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) - (Continued)

(in thousands, except share and per share amounts)

Fair Value Measurements

The Company follows the guidance related to fair value measurements for all of its non-financial assets and non-financial liabilities, except for those recognized at fair value in the financial statements at least annually. These assets include goodwill and long-lived assets measured at fair value for impairment assessments, and non-financial assets and liabilities initially measured at fair value in a business combination.

The Company’s financial instruments include cash and cash equivalents, restricted cash, accounts and notes receivable, long-term contract receivables, interest rate swaps, accounts payable, accrued expenses, capital lease assets and liabilities and short-term and long-term borrowings. Because of their short maturity, the carrying amounts of cash and cash equivalents, restricted cash, accounts and notes receivable, accounts payable, accrued expenses and short-term borrowings approximate fair value. The carrying value of long-term variable-rate debt approximates fair value. As of September 30, 2016, the fair value of the Company’s long-term debt exceeds its carrying value by approximately $1,775. Fair value of the Company’s debt is based on quoted market prices or on rates available to the Company for debt with similar terms and maturities, which are level two inputs of the fair value hierarchy, as defined in Note 6.

The Company accounts for its interest rate swaps as derivative financial instruments in accordance with the related guidance. Under this guidance, derivatives are carried on the Company’s consolidated balance sheets at fair value. The fair value of the Company’s interest rate swaps are determined based on observable market data in combination with expected cash flows for each instrument.

See Note 6 for additional information related to fair value measurements.

Stock-Based Compensation Expense

Stock-based compensation expense results from the issuance of shares of restricted common stock and grants of stock options to employees, directors, outside consultants and others. The Company recognizes the costs associated with restricted stock and option grants using the fair value recognition provisions of ASC 718, Compensation - Stock Compensation on a straight-line basis over the vesting period of the awards.

Stock-based compensation expense is recognized based on the grant-date fair value. The Company estimates the fair value of the stock-based awards, including stock options, using the Black-Scholes option-pricing model. Determining the fair value of stock-based awards requires the use of highly subjective assumptions, including the fair value of the common stock underlying the award, the expected term of the award and expected stock price volatility.

The assumptions used in determining the fair value of stock-based awards represent management’s estimates, which involve inherent uncertainties and the application of management judgment. As a result, if factors change, and different assumptions are employed, the stock-based compensation could be materially different in the future. The risk-free interest rates are based on the U.S. Treasury yield curve in effect at the time of grant, with maturities approximating the expected life of the stock options.

The Company has no history of paying dividends. Additionally, as of each of the grant dates, there was no expectation that the Company would pay dividends over the expected life of the options. The expected life of the awards is estimated using historical data and management’s expectations. Because there was no public market for the Company’s common stock prior to the Company’s initial public offering, for certain option grants management lacked company-specific historical and implied volatility information. Therefore, estimates of expected stock volatility were based on that of publicly traded peer companies, and it is expected that the Company will continue to use this methodology until such time as there is adequate historical data regarding the volatility of the Company’s publicly traded stock price.

The Company is required to recognize compensation expense for only the portion of options that are expected to vest. Actual historical forfeiture rate of options is based on employee terminations and the number of shares forfeited. This data and other qualitative factors are considered by the Company in determining the forfeiture rate used in recognizing stock compensation expense. If the actual forfeiture rate varies from historical rates and estimates, additional adjustments to compensation expense may be required in future periods. If there are any modifications or cancellations of the underlying unvested securities or the terms of the stock option, it may be necessary to accelerate, increase or cancel any remaining unamortized stock-based compensation expense.

For the three months ended September 30, 2016 and 2015, the Company recorded stock-based compensation expense of $328 and $396, respectively, in connection with stock-based payment awards. For the nine months ended September 30, 2016

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) - (Continued)

(in thousands, except share and per share amounts)

and 2015, the Company recorded stock-based compensation expense of $1,086 and $1,367, respectively, in connection with stock-based payment awards. The compensation expense is allocated between cost of revenues and selling, general and administrative expenses in the accompanying consolidated statements of income based on the salaries and work assignments of the employees holding the options. As of September 30, 2016, there was $3,306 of unrecognized compensation expense related to non-vested stock option awards that is expected to be recognized over a weighted-average period of 2.8 years.

The Company also accounts for equity instruments issued to non-employee directors and consultants at fair value. All transactions in which goods or services are the consideration received for the issuance of equity instruments are accounted for based on the fair value of the consideration received or the fair value of the equity instrument issued, whichever is more reliably measurable. The measurement date of the fair value of the equity instrument issued is the date on which the counterparty’s performance is complete. No awards to individuals who were not either an employee or director of the Company occurred during the nine months ended September 30, 2016 or during the year ended December 31,2015.

Share Repurchase Program

In April 2016, the Company’s Board of Directors authorized the repurchase of up to $10,000 of the Company’s Class A common stock from time to time on the open market in privately negotiated transactions. The timing and amount of any shares repurchased will be determined by the Company's management based on its evaluation of market conditions and other factors. Any repurchased shares will be available for use in connection with its stock plans and for other corporate purposes. The repurchase program will be funded using the Company's working capital and borrowings under its revolving line of credit. The Company accounts for share repurchases using the cost method. Under this method, the cost of the share repurchase is recorded entirely in treasury stock, a contra equity account. During the three months ended September 30, 2016, the Company repurchased 503,246 shares of common stock in the amount of $2,502, including fees. During the nine months ended September 30, 2016, the Company repurchased 920,944 shares of common stock in the amount of $4,451, including fees.

Derivative Financial Instruments

In the normal course of business, the Company utilizes derivatives contracts as part of its risk management strategy to manage exposure to market fluctuations in interest rates. These instruments are subject to various credit and market risks. Controls and monitoring procedures for these instruments have been established and are routinely reevaluated. Credit risk represents the potential loss that may occur because a party to a transaction fails to perform according to the terms of the contract. The measure of credit exposure is the replacement cost of contracts with a positive fair value. The Company seeks to manage credit risk by entering into financial instrument transactions only through counterparties that the Company believes to be creditworthy.

Market risk represents the potential loss due to the decrease in the value of a financial instrument caused primarily by changes in interest rates. The Company seeks to manage market risk by establishing and monitoring limits on the types and degree of risk that may be undertaken. As a matter of policy, the Company does not use derivatives for speculative purposes. The Company considers the use of derivatives with all financing transactions to mitigate risk.

The Company recognizes cash flows from derivative instruments as operating activities in the consolidated statements of cash flows. The effective portion of changes in fair value on interest rate swaps designated as cash flow hedges are recognized in the Company’s consolidated statements of comprehensive income (loss). The ineffective portion of changes in fair value on interest rate swaps designated as hedges and changes in fair value on interest rate swaps not designated as hedges are recognized in the Company’s consolidated statements of income.

During 2007, the Company entered into two interest rate swap contracts under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional principal amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swaps cover initial notional amounts of $13,081 and $3,256, each a variable rate note at fixed interest rates of 5.4% and 5.3%, respectively, and expire in March 2024 and February 2021, respectively. These interest rate swaps qualified, but were not designated, as cash flow hedges until April 1, 2010. Since April 2010, they have been designated as hedges.

In March 2010, the Company entered into a fourteen-year interest rate swap contract under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swap covers an initial notional amount of approximately $27,900 variable rate note at a fixed interest rate of 6.99% and expires in December 2024. This swap was

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(in thousands, except share and per share amounts)

designated as a hedge in March 2013. During the second quarter of 2014, this swap was de-designated and re-designated as a hedge as a result of a partial pay down of the associated hedged debt principal.

In July 2011, the Company entered into a five-year interest rate swap contract under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swap covered an initial notional amount of $38,571 variable rate note at a fixed interest rate of 1.965% and expired in June 2016. This interest rate swap had been designated as a hedge since inception.

In October 2012, the Company entered into twoeight-year interest rate swap contracts under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swaps cover an initial notional amount of $16,750 variable rate note at a fixed interest rate of 1.71%. This notional amount increased to $42,247 on September 30, 2013 and expires in March 2020. These interest rate swaps have been designated as hedges since inception.

In October 2012, the Company also entered into twoeight-year forward starting interest rate swap contracts under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swaps cover an initial notional amount of $25,377 variable rate note at a fixed interest rate of 3.70%, with an effective date of March 31, 2020, and expires in June 2028. These interest rate swaps have been designated as hedges since inception.

In September 2015, the Company entered into a seven-year forward starting interest rate swap contract under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swap covers an initial notional amount of $20,746 variable rate note at a fixed interest rate of 2.19%, and expires in February 2023. The effective date of the interest rate swap was February 28, 2016. The underlying cash flows hedged have an initial principal balance of $20,746 with an effective date of March 30, 2016. This interest rate swap has been designated as a hedge since inception.

In September 2015, the Company also entered into a fifteen-year forward starting interest rate swap contract under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swap covers an initial notional amount of $14,084 variable rate note at a fixed interest rate of 3.26%, with an effective date of February 28, 2023, and expires in December 2038. This interest rate swap has been designated as a hedge since inception.

See Notes 6 and 7 for additional information on the Company’s derivative instruments.

Earnings Per Share

Basic earnings per share is calculated using the Company’s weighted-average outstanding common shares, including vested restricted shares. When the effects are not anti-dilutive, diluted earnings per share is calculated using the weighted-average outstanding common shares; the dilutive effect of convertible preferred stock, under the “if converted” method; and the treasury stock method with regard to warrants and stock options; all as determined under the treasury stock method.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Net income attributable to Ameresco, Inc.	$	5,715	$	4,178	$	8,763	$	1,981
Basic weighted-average shares outstanding	46,360,575		46,517,638		46,606,494		46,473,375
Effect of dilutive securities:
Stock options	69,588		1,538,721		62,542		1,149,667
Diluted weighted-average shares outstanding	46,430,163		48,056,359		46,669,036		47,623,042

For the three months ended September 30, 2016 and 2015 the total number of shares of common stock related to stock options excluded from the calculation of dilutive shares, as the effect would be anti-dilutive, were 3,437,620 and 2,171,104, respectively. For the nine months ended September 30, 2016 and 2015 the total number of shares of common stock related to stock options excluded from the calculation of dilutive shares, as the effect would be anti-dilutive, were 3,437,620 and 1,704,004. For the nine months ended September 30, 2016 the Company has excluded stock options from the calculation of

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(in thousands, except share and per share amounts)

dilutive shares under the treasury stock method where the sum of the assumed proceeds, including unrecognized compensation and related excess tax benefits, exceeds the difference between the market price and the exercise price.

Variable Interest Entities

Certain contracts are executed jointly through partnership and joint venture arrangements with unrelated third parties. The arrangements are often formed for the single business purpose of executing a specific project and allow the Company to share risks and/or secure specialty skills required for project execution.

        The Company evaluates each partnership and joint venture at inception to determine if it qualifies as a variable interest entity (“VIE”) under ASC 810, Consolidation. A VIE is an entity used for business purposes that either (a) does not have equity investors with voting rights or (b) has equity investors who are not required to provide sufficient financial resources for the entity to support its activities without additional subordinated financial support. Upon the occurrence of certain events outlined in ASC 810, the Company reassesses its initial determination of whether the partnership or joint venture is a VIE.

        The Company also evaluates whether it is the primary beneficiary of each VIE and consolidates the VIE if the Company has both (a) the power to direct the economically significant activities of the entity and (b) the obligation to absorb losses of, or the right to receive benefits from, the entity that could potentially be significant to the VIE. The Company considers the contractual agreements that define the ownership structure, distribution of profits and losses, risks, responsibilities, indebtedness, voting rights and board representation of the respective parties in determining whether it qualifies as the primary beneficiary. The Company also considers all parties that have direct or implicit variable interests when determining whether it is the primary beneficiary. When the Company is determined to be the primary beneficiary, the VIE is consolidated. As required by ASC 810, management's assessment of whether the Company is the primary beneficiary of a VIE is continuously performed.

Redeemable Non-Controlling Interest

In September 2015, the Company formed an investment fund with a third party investor which granted the investor ownership interests in the net assets of certain of the Company’s renewable energy project subsidiaries. The Company entered into this agreement in order to finance the costs of constructing the project assets which are under long-term customer contracts. The Company has determined that it is the primary beneficiary in the operational partnership for accounting purposes. Accordingly, the Company will consolidate the assets and liabilities and operating results of the entities in its consolidated financial statements. The Company will recognize the investors’ share of the net assets of the subsidiary as a redeemable non-controlling interest in its condensed consolidated balance sheets.

The Company has determined that the provisions in the contractual arrangement represent a substantive profit-sharing arrangement. The Company has further determined that the appropriate methodology for attributing income and loss to the redeemable non-controlling interest each period is a balance sheet approach referred to as the hypothetical liquidation at book value (“HLBV”) method. Under the HLBV method, the amounts of income and loss attributed to the redeemable non-controlling interest in the consolidated statements of income reflect changes in the amounts the investor would hypothetically receive at each balance sheet date under the liquidation provisions of the contractual agreement, assuming the net assets of this funding structure were liquidated at recorded amounts. The investors’ non-controlling interest in the results of operations of this funding structure is determined as the difference in the non-controlling interest’s claim under the HLBV method at the start and end of each reporting period, after taking into account any capital transactions, such as contributions or distributions, between the Company’s subsidiary and the investor. The use of the HLBV methodology to allocate income to the redeemable non-controlling interest holder may create volatility in the Company’s consolidated statements of income as the application of HLBV can drive changes in net income available and loss attributable to the redeemable non-controlling interest from quarter to quarter.

The Company classified the non-controlling interest with redemption features that are not solely within the control of the Company outside of permanent equity on its consolidated balance sheets. The redeemable non-controlling interest will be reported using the greater of its carrying value at each reporting date as determined by the HLBV method or the estimated redemption value in each reporting period.

See Note 9 for additional disclosures.

Recent Accounting Pronouncements

In May 2014, FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). The guidance in this ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards. The guidance in this ASU

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) - (Continued)

(in thousands, except share and per share amounts)

supersedes the revenue recognition requirements in ASC 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the Codification. This ASU also supersedes some cost guidance included in ASC 605-35, Revenue Recognition-Construction-Type and Production-Type Contracts. In addition, the existing requirements for the recognition of a gain or loss on the transfer of nonfinancial assets that are not in a contract with a customer are amended to be consistent with the guidance on recognition and measurement in this ASU. The FASB has approved a one year deferral of this standard, and this pronouncement is now effective for annual reporting periods beginning after December 15, 2017. Entities would be permitted to adopt the standard as early as the original public entity effective date (i.e., annual reporting periods beginning after December 15, 2016 and interim periods therein). Early adoption prior to that date is not permitted. Retrospective application of the amendments in this ASU is required. The new guidance must be adopted using either a full retrospective approach for all periods presented in the period of adoption (with some limited relief provided) or a modified retrospective approach. Early application is not permitted under GAAP. The Company is currently assessing the impact of this ASU on its consolidated financial statements.

In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements — Going Concern (Subtopic 205-40) (“ASU 2014-15”). ASU 2014-15 requires management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles of current U.S. auditing standards. Specifically, the amendments (1) provide a definition of the term “substantial doubt”, (2) require an evaluation every reporting period, including interim periods, (3) provide principles for considering the mitigating effect of management’s plans, (4) require certain disclosures when substantial doubt is alleviated as a result of consideration of management’s plans, (5) require an express statement and other disclosures when substantial doubt is still present, and (6) require an assessment for a period of one year after the date that the financial statements are issued (or available to be issued). ASU 2014-15 is effective for annual reporting periods ending after December 15, 2016 and interim periods thereafter. Early adoption is permitted. The Company does not believe that this pronouncement will have an impact on its consolidated financial statements.

In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis (“ASU 2015-02”). ASU 2015-02 affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. ASU 2015-02 is effective for annual reporting periods beginning after December 15, 2015 and interim periods within those annual reporting periods. The Company adopted this guidance in the first quarter of fiscal 2016. This pronouncement did not change the Company’s previous consolidation conclusions.

In April 2015, the FASB issued ASU 2015-03, Interest — Imputation of Interest (Subtopic 835-03): Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”). ASU 2015-03 requires debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the debt liability rather than as an asset. ASU 2015-03 is effective for annual reporting periods beginning after December 15, 2015, and interim periods within those annual reporting periods. The Company adopted this guidance in the first quarter of fiscal 2016. As such, deferred financing fees are presented on the Consolidated Balance Sheets as a reduction to long-term debt and capital lease liabilities.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The guidance in this ASU supersedes the leasing guidance in Topic 840, Leases. Under the new guidance, lessees are required to recognize lease assets and lease liabilities on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the impact of this pronouncement on its consolidated financial statements.

In March 2016, the FASB issued ASU No. 2016-09, Compensation-Stock Compensation-Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"). The guidance in this ASU involves several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Under ASU 2016-09, income tax benefits and deficiencies are to be recognized as income tax expense or benefit in the statement of operations and the tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. Additionally, under ASU 2016-09, excess tax benefits should be classified along with other income tax cash flows as an operating activity. ASU 2016-09 will be effective for the Company on January 1, 2017, with early adoption permitted. The Company is currently evaluating the impact ASU 2016-09 will have on its consolidated financial statements.

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(in thousands, except share and per share amounts)

3. GOODWILL AND INTANGIBLE ASSETS

The changes in the carrying value of goodwill attributable to each reportable segment are as follows:

	U.S. Regions		U.S. Federal		Canada			Small-Scale Infrastructure		Other			Total
Balance, December 31, 2015	$	24,759	$	3,375	$	3,162		$	—	$	27,789		$	59,085
Currency effects	—		—		175			—		(899		)	(724		)
Balance, September 30, 2016	$	24,759	$	3,375	$	3,337		$	—	$	26,890		$	58,361
Accumulated Goodwill Impairment Balance, December 31, 2015	$	—	$	—	$	(1,016	)	$	—	$	—		$	(1,016	)
Accumulated Goodwill Impairment Balance, September 30, 2016	$	—	$	—	$	(1,016	)	$	—	$	—		$	(1,016	)

Separable intangible assets that are not deemed to have indefinite lives are amortized over their useful lives. The Company annually assesses whether a change in the life over which the Company’s assets are amortized is necessary, or more frequently if events or circumstances warrant. No changes to useful lives were made during the nine months ended September 30, 2016 or for the year ended December 31,2015.

Acquired intangible assets other than goodwill that are subject to amortization include customer contracts, customer relationships, non-compete agreements, technology and trade names. Customer contracts are amortized ratably over the period of the acquired customer contracts ranging in periods from approximately one to five years. All other acquired intangible assets are amortized over periods ranging from approximately four to fifteen years, as defined by the nature of the respective intangible asset.

The gross carrying amount and accumulated amortization of intangible assets are as follows:

	As of September 30,		As of December 31,
	2016		2015
Gross Carrying Amount
Customer contracts	$	7,690	$	7,898
Customer relationships	11,876		12,496
Non-compete agreements	3,240		3,324
Technology	2,728		2,701
Trade names	543		540
	26,077		26,959
Accumulated Amortization
Customer contracts	7,614		7,683
Customer relationships	7,731		6,621
Non-compete agreements	3,169		3,149
Technology	2,435		2,241
Trade names	513		495
	21,462		20,189
Intangible assets, net	$	4,615	$	6,770

Amortization expense related to customer contracts is included in cost of revenues in the consolidated statements of income. Amortization expense related to all other acquired intangible assets is included in selling, general and administrative expenses in the consolidated statements of income. Amortization expense for the three months ended September 30, 2016 and 2015 related to customer contracts was $46 and $230, respectively. Amortization expense for the nine months ended September 30, 2016 and 2015 related to customer contracts was $140 and $689, respectively. Amortization expense for the three months ended September 30, 2016 and 2015 related to all other acquired intangible assets was $536 and $787, respectively. Amortization expense for the nine months ended September 30, 2016 and 2015 related to all other acquired intangible assets was $1,653 and $2,352, respectively.

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(in thousands, except share and per share amounts)

4. INCOME TAXES

The provision for income taxes was $1,865 and $3,343 for the three months ended September 30, 2016 and 2015, respectively. The provision for income taxes was $2,872 and $2,187 for the nine months ended September 30, 2016 and 2015, respectively. The estimated 2016 effective tax rate was 24.3% for the three months ended September 30, 2016 compared to a 44.4% estimated annual effective tax rate for the three months ended September 30, 2015. The estimated 2016 effective tax rate was 25.0% for the nine months ended September 30, 2016 compared to a 52.5% estimated annual effective tax rate for the nine months ended September 30, 2015.

The principal reason for the difference between the statutory rate and the estimated annual effective rate for 2016 were the effects of the tax deduction under Internal Revenue Code Section 179D and production tax credits to which the Company is entitled from owned plants. The principal reason for the difference between the statutory rate and the estimated annual effective rate for 2015 were the effects of the valuation allowance required for the expected Canada losses as well as the investment tax credits and production tax credits to which the Company is entitled to from owned plants.

The investment tax credits and production tax credits to which the Company may be entitled fluctuate from year to year based on the cost of the renewable energy plants the Company places or expects to place in service and production levels at company owned facilities in that year. In addition, the tax deduction under Internal Revenue Code Section 179D expired as of December 31, 2014 and was retroactively reinstated in December of 2015. The current expiration date for the 179D deduction is December 31, 2016.

A reconciliation of the beginning and ending balances of the total amounts of gross unrecognized tax benefits is as follows:

	Gross Unrecognized Tax Benefits
Balance, December 31, 2015	$	2,200
Additions for prior year tax positions	—
Settlements with tax authorities	(436		)
Reductions of prior year tax positions	—
Balance, September 30, 2016	$	1,764

At September 30, 2016 and December 31,2015, the Company had approximately $1,764 and $2,200, respectively, of total gross unrecognized tax benefits. At September 30, 2016 and December 31,2015, the Company had approximately $400 and $800, respectively, of total gross unrecognized tax benefits (net of the federal benefit on state amounts) representing the amount of unrecognized tax benefits that, if recognized, would favorably affect the effective income tax rate in any future periods.

5. COMMITMENTS AND CONTINGENCIES

Legal Proceedings

The Company is involved in a variety of claims and other legal proceedings generally incidental to its normal business activities. While the outcome of any of these proceedings cannot be accurately predicted, the Company does not believe the ultimate resolution of any of these existing matters would have a material adverse effect on its financial condition or results of operations.

Solar Tariff Contingency

In October 2012, the U.S. Department of Commerce (“Commerce”) announced its final determination in the anti-dumping (“AD”) and countervailing duty (“CVD”) investigations of imports of solar cells manufactured in the People’s Republic of China (“PRC”), including solar modules containing such cells. Commerce’s final determination confirmed its previously published AD duty of 249.96%, for manufacturers without a separate rate, and increased its CVD from 3.61% to 15.24%; both duties are applied to the value of imports of solar modules containing PRC cells. On November 7, 2012, the International Trade Commission announced its final determination upholding the duties. All shipments from May 25, 2012 until the Company suspended importing solar modules containing PRC cells in July 2012 (“covered shipments”) were subject to the CVD and were covered by a single continuous entry bond. Covered shipments also were subject to AD duty, for each of which the Company was required to post a single entry bond. In August, 2014, U.S. Customs lifted suspension of liquidation of covered shipments. As a result of liquidation, during the third and fourth quarters of 2014, the Company paid CVD on covered shipments at the 3.61% rate. During the fourth quarter of 2014 through the first quarter of 2015, the Company paid AD duties

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(in thousands, except share and per share amounts)

on covered shipments at a 31.18% rate. During the fourth quarter of 2015, the Company received the final bill from U.S. Customs for liquidation of one remaining covered shipment containing PRC cells and the matter was resolved in the first quarter of 2016.

Commitments as a Result of Acquisitions

Related to the Company's acquisition of Energyexcel LLP (“EEX”) in the second quarter of 2014, the former owners of EEX, who are now employees of the Company, may be entitled to receive up to 4,500 British pounds sterling ($5,836 converted as of September 30, 2016) in additional consideration, accounted for as compensation for post-combination services, if the acquired business meets certain financial performance milestones through December 31, 2018. No amounts were accrued as of September 30, 2016 and December 31,2015, respectively.

6. FAIR VALUE MEASUREMENT

The Company recognizes its financial assets and liabilities at fair value on a recurring basis (at least annually). Fair value is defined as the price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Three levels of inputs that may be used to measure fair value are as follows:

Level 1:  Inputs are based upon unadjusted quoted prices for identical instruments traded in active markets.

Level 2:  Inputs are based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model based valuation techniques for which all significant assumptions are observable in the market or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3:  Inputs are generally unobservable and typically reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability. The fair values are therefore determined using model-based techniques that include option pricing models, discounted cash flow models, and similar techniques.

The following table presents the input level used to determine the fair values of the Company’s financial instruments measured at fair value on a recurring basis:

		Fair Value as of
		September 30,		December 31,
	Level	2016		2015
Liabilities:
Interest rate swap instruments	2	$	7,937	$	4,681

The fair value of the Company’s interest rate swaps was determined using a cash flow analysis on the expected cash flow of the contract in combination with observable market-based inputs, including interest rate curves and implied volatilities. As part of this valuation, the Company considered the credit ratings of the counterparties to the interest rate swaps to determine if a credit risk adjustment was required.

The fair value of financial instruments is determined by reference to observable market data and other valuation techniques, as appropriate. The only category of financial instruments where the difference between fair value and recorded book value is notable is long-term debt. At September 30, 2016, the fair value of the Company’s long-term debt was estimated using discounted cash flows analysis, based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements which are considered to be level two inputs. There were no transfers in or out of level two for the nine months ended September 30, 2016. Based on the analysis performed, the fair value and the carrying value of the Company’s long-term debt, excluding capital lease liabilities, are as follows:

	As of September 30, 2016				As of December 31, 2015
	Fair Value		Carrying Value		Fair Value		Carrying Value
Long-term debt	$	115,305	$	113,530	$	108,323	$	107,148

The Company is also required periodically to measure certain other assets at fair value on a nonrecurring basis, including long-lived assets, goodwill and other intangible assets. There were no assets recorded at fair value on a non-recurring basis at September 30, 2016.

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(in thousands, except share and per share amounts)

7. DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

Information about the fair value amounts of the Company’s derivative instruments is as follows:

	Derivatives as of
	September 30, 2016			December 31, 2015
	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives Designated as Hedging Instruments:
Interest rate swap contracts	Other liabilities	$	7,937	Other liabilities	$	4,681

The following table presents information about the effects of the Company’s derivative instruments on the consolidated statements of income and consolidated statements of comprehensive income (loss):

	Location of Gain Recognized in Net Income	Amount of Gain Recognized in Net Income
		Three Months Ended September 30,						Nine Months Ended September 30,
		2016			2015			2016			2015
Derivatives Designated as Hedging Instruments:
Interest rate swap contracts	Other expenses, net	$	(74	)	$	(93	)	$	(227	)	$	(277	)

The following table summarizes the pre-tax amount of unrealized gain or loss recognized in accumulated other comprehensive loss, net (“AOCI”) in the Company’s consolidated balance sheets:

	Nine Months Ended
	September 30, 2016
Derivatives Designated as Hedging Instruments:
Accumulated loss in AOCI at the beginning of the period	$	(2,548	)
Unrealized loss recognized in AOCI	(1,302		)
Loss reclassified from AOCI to other expenses, net	(925		)
Accumulated loss in AOCI at the end of the period	$	(4,775	)

8. INVESTMENT FUND

During the third quarter of 2015, the Company formed an investment fund for the purpose of funding the purchase of a solar energy system. The Company consolidates the investment fund, and all inter-company balances and transactions between the Company and the investment fund are eliminated in its consolidated financial statements. The Company determined that the investment fund meets the definition of a VIE. The Company uses a qualitative approach in assessing the consolidation requirement for VIEs that focuses on determining whether the Company has the power to direct the activities of the VIE that most significantly affect the VIE’s economic performance and whether the Company has the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE.

The Company has considered the provisions within the contractual arrangements that grant it power to manage and make decisions that affect the operation of this VIE, including determining the solar energy systems and associated long term customer contracts to be sold or contributed to the VIE, and installation, operation and maintenance of the solar energy systems. The Company considers that the rights granted to the other investors under the contractual arrangements are more protective in nature rather than participating rights. As such, the Company has determined it is the primary beneficiary of the VIE for all periods presented. The Company evaluates its relationships with VIEs on an ongoing basis to ensure that it continues to be the primary beneficiary.

Under the related agreements, cash distributions of income and other receipts by the fund, net of agreed-upon expenses and estimated expenses, tax benefits and detriments of income and loss, and tax benefits of tax credits, are assigned to the fund investor and Company’s subsidiary as specified in contractual arrangements. Certain of these arrangements have call and put options to acquire the investor’s equity interest as specified in the contractual agreement. See Note 9 for additional information on the call and put options.

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(in thousands, except share and per share amounts)

At September 30, 2016, the Company’s consolidated balance sheet included $949 in cash, $1,554 in restricted cash, $241 in accounts receivable, $293 in costs and estimated earnings in excess of billings, $43 in prepaid expenses and other current assets, $32,535 of project assets, $84 in other assets, and $33 in accrued expenses and other current liabilities related to the investment fund. At December 31,2015, the Company’s consolidated balance sheet included $5,419 in restricted cash, $25 in prepaid expenses and other current assets, $32,657 of project assets, net and $112 in other assets related to the investment fund.

9. NON-CONTROLLING INTERESTS

Redeemable Non-controlling Interest

The Company’s wholly owned subsidiary with a membership interest in the investment fund has the right, beginning on the fifth anniversary of the final funding of the variable rate construction and term loans due 2023 and extending for six months, to elect to require the non-controlling interest holder to sell all of its membership units to the Company’s wholly owned subsidiary (the “Call Option”). The Company’s investment fund, which was formed in the third quarter of 2015, also includes a right, beginning on the sixth anniversary of the final funding and extending for one year, for the non-controlling interest holder to elect to require the Company’s wholly owned subsidiary to purchase all of its membership interests in the fund (the “Put Option”).

Because the Put Option represents a redemption feature that is not solely within the control of the Company, the non-controlling interest in these funds is presented outside of permanent equity. Redeemable non-controlling interests are reported using the greater of their carrying value at each reporting date (which is impacted by attribution under the HLBV method) or their estimated redemption value in each reporting period.

The purchase price for the fund investor’s membership interest under the Call Option is equal to the fair market value as of the exercise date.

10. BUSINESS SEGMENT INFORMATION

The Company reports results under ASC 280, Segment Reporting. The Company’s reportable segments are U.S. Regions, U.S. Federal, Canada and Small-Scale Infrastructure. The Company’s U.S. Regions, U.S. Federal and Canada segments offer energy efficiency products and services, which include the design, engineering and installation of equipment and other measures to improve the efficiency and control the operation of a facility’s energy infrastructure; renewable energy solutions and services, which include the construction of small-scale plants for customers that produce electricity, gas, heat or cooling from renewable sources of energy; and O&M services. The Company’s Small-Scale Infrastructure segment sells electricity, processed landfill gas, heat or cooling produced from renewable sources of energy from small-scale plants that the Company owns. The “All Other” category offers enterprise energy management services, consulting services and the sale and installation of solar-PV energy products and systems. These segments do not include results of other activities, such as corporate operating expenses not specifically allocated to the segments. During the nine months ended September 30, 2016, the Company also reserved for certain assets in its Canada segment totaling $1,934 due to collectability concerns as a result of its previously disclosed restructuring efforts. During the three and nine months ended September 30, 2016, the Company included in unallocated corporate activity $2,194 and $3,195, respectively, as a reserve for a customer who declared bankruptcy.

The reports of the Company’s chief operating decision maker do not include assets at the operating segment level.

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(in thousands, except share and per share amounts)

An analysis of the Company’s business segment information and reconciliation to the condensed consolidated financial statements is as follows:

	U.S. Regions		U.S. Federal		Canada			Small-Scale Infrastructure		All Other			Total Consolidated
Three Months Ended September 30, 2016
Revenues	$	83,652	$	46,498	$	12,018		$	21,790	$	16,640		$	180,598
Interest income	—		2		—			10		—			12
Interest expense	—		278		493			1,116		—			1,887
Depreciation and amortization of intangible assets	116		686		288			4,063		649			5,802
Unallocated corporate activity	—		—		—			—		—			(10,478		)
Income (loss) before taxes, excluding unallocated corporate activity	7,918		5,338		(154		)	5,312		(261		)	18,153
Three Months Ended September 30, 2015
Revenues	103,847		35,491		12,931			16,025		20,848			189,142
Interest income	—		—		—			—		—			—
Interest expense	—		—		369			990		—			1,359
Depreciation and amortization of intangible assets	213		299		278			3,691		1,020			5,501
Unallocated corporate activity	—		—		—			—		—			(6,235		)
Income (loss) before taxes, excluding unallocated corporate activity	10,581		4,332		(1,660		)	2,204		(1,701		)	13,756
Nine Months Ended September 30, 2016
Revenues	195,856		128,266		40,023			61,543		51,314			477,002
Interest income	—		7		—			29		—			36
Interest expense	—		666		1,243			3,212		—			5,121
Depreciation and amortization of intangible assets	390		1,913		788			11,663		1,997			16,751
Unallocated corporate activity	—		—		—			—		—			(25,044		)
Income (loss) before taxes, excluding unallocated corporate activity	12,732		16,303		(1,457		)	9,923		(971		)	36,530
Nine Months Ended September 30, 2015
Revenues	221,875		90,071		37,663			45,947		61,508			457,064
Interest income	—		—		3			159		—			162
Interest expense	—		—		980			2,914		—			3,894
Depreciation and amortization of intangible assets	622		907		803			10,571		3,044			15,947
Unallocated corporate activity	—		—		—			—		—			(19,640		)
Income (loss) before taxes, excluding unallocated corporate activity	$	18,656	$	12,632	$	(7,238	)	$	4,553	$	(4,795	)	$	23,808

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(in thousands, except share and per share amounts)

11. LONG-TERM DEBT

Variable-Rate Construction and Term Loans

In September 2015, the Company entered into a credit and guaranty agreement for use in providing non-recourse financing for certain of its solar-PV projects currently under construction. The credit and guaranty agreement provides for a $20,746 construction-to-term loan credit facility and bears interest at a variable rate. The term loan matures on March 30, 2023. On March 30, 2016, the construction loan was converted to a term loan. At December 31,2015, $17,663 was outstanding under the construction loan. At September 30, 2016, $20,572 was outstanding under the term loan. The variable rate for this loan at September 30, 2016 was 3.34%.

In August 2016, the Company entered into a credit and guaranty agreement with two banks for use in providing limited recourse financing for certain of its solar PV projects in operation. The credit and guaranty agreement provides for a $6,358 Canada dollar ($4,837 converted as of September 30, 2016) term loan credit facility and bears interest at a fixed rate of 4.95%. At September 30, 2016, $4,767 was outstanding under the term loan.

Senior Secured Credit Facility - Revolver and Term Loan

On June 30, 2015, the Company entered into a third amended and restated bank credit facility with two banks. The new credit facility replaces and extended the Company’s existing credit facility, which was scheduled to expire in accordance with its terms on June 30, 2016. The revolving credit facility matures on June 30, 2020 and the term loan facility matures on June 30, 2018, when all amounts will be due and payable in full. The Company expects to use the new credit facility for general corporate purposes of the Company and its subsidiaries, including permitted acquisitions, refinancing of existing indebtedness and working capital. In July 2016, the Company entered into an amendment to the third amended and restated bank credit facility. Under this amendment, the requirement of the total funded debt to EBITDA ratio was amended as described below.

The credit facility consists of a $60,000 revolving credit facility and a $17,143 term loan. The amount of the term loan represents the amount outstanding under the Company’s existing term loan at closing. The revolving credit facility may be increased by up to an additional $25,000 at the Company’s option if lenders are willing to provide such increased commitments, subject to certain conditions. Up to $20,000 of the revolving credit facility may be borrowed in Canadian dollars, Euros and Pounds Sterling. The Company is the sole borrower under the credit facility. The obligations under the credit facility are guaranteed by certain of the Company’s direct and indirect wholly owned domestic subsidiaries and are secured by a pledge of all of the Company’s and such subsidiary guarantors’ assets, other than the equity interests of certain subsidiaries and assets held in non-core subsidiaries (as defined in the agreement). At September 30, 2016, there were $18,733 amounts outstanding under the revolving credit facility and $10,000 outstanding under the term loan. At December 31,2015, there was $11,300 outstanding under the revolving credit facility and $14,285 outstanding under the term loan.

The interest rate for borrowings under the credit facility is based on, at the Company’s option, either (1) a base rate equal to a margin of 0.50% or 0.25%, depending on the Company’s ratio of Total Funded Debt to EBITDA (each as defined in the agreement), over the highest of (a) the federal funds effective rate, plus 0.50%, (b) Bank of America’s prime rate and (c) a rate based on the London interbank deposit rate (“LIBOR”) plus 1.50%, or (2) the one-, two- three- or six-month LIBOR plus a margin of 2.00% or 1.75%, depending on the Company’s ratio of Total Funded Debt to EBITDA. A commitment fee of 0.375% is payable quarterly on the undrawn portion of the revolving credit facility. At September 30, 2016, the interest rate for borrowings under the revolving credit facility was 3.75% and interest rate for borrowings under the term loan was 2.59%.

The revolving credit facility does not require amortization of principal. The term loan requires quarterly principal payments of $1,429, with the balance due at maturity. All borrowings may be paid before maturity in whole or in part at the Company’s option without penalty or premium, other than reimbursement of any breakage and deployment costs in the case of LIBOR borrowings.

The credit facility limits the Company’s and its subsidiaries’ ability to, among other things: incur additional indebtedness; incur liens or guarantee obligations; merge, liquidate or dispose of assets; make acquisitions or other investments; enter into hedging agreements; pay dividends and make other distributions and engage in transactions with affiliates, except in the ordinary course of business on an arms’ length basis.

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(in thousands, except share and per share amounts)

Under the credit facility, the Company and its subsidiaries may not invest cash or property in, or loan to, the Company’s non-core subsidiaries in aggregate amounts exceeding 49% of the Company’s consolidated stockholders’ equity. In addition, under the credit facility, the Company and its core subsidiaries must maintain the following financial covenants:

• a ratio of total funded debt to EBITDA of:

- less than 2.00 to 1.0 as of the end of each fiscal quarter ending on or before June 30, 2016;

- less than 2.75 to 1.0 as of the end of each fiscal quarter ending September 30, 2016, December 31, 2016, March 31, 2017 and June 30, 2017; and

- less than 2.00 to 1.0 as of the end of each fiscal quarter ending September 30, 2017 and thereafter; and

• a debt service coverage ratio (as defined in the agreement) of at least 1.5 to 1.0.

Any failure to comply with the financial or other covenants of the credit facility would not only prevent the Company from being able to borrow additional funds, but would constitute a default, permitting the lenders to, among other things, accelerate the amounts outstanding, including all accrued interest and unpaid fees, under the credit facility, to terminate the credit facility, and enforce liens against the collateral.

The credit facility also includes several other customary events of default, including a change in control of the Company, permitting the lenders to accelerate the indebtedness, terminate the credit facility, and enforce liens against the collateral.

For purposes of the Company’s senior secured facility: EBITDA excludes the results of certain renewable energy projects that the Company owns and for which financing from others remains outstanding; total funded debt includes amounts outstanding under both the term loan and revolver portions of the senior secured credit facility plus other indebtedness, but excludes non-recourse indebtedness of project company subsidiaries; and debt service includes principal and interest payments on the indebtedness included in total funded debt other than principal payments on the revolver portion of the facility.

At September 30, 2016, the Company was in compliance with all financial and operational covenants.

12. Subsequent Events

In October 2016, the Company entered into a non-recourse construction loan agreement with a lender to finance up to 80% of the value of construction costs on certain solar-PV projects in development. The maximum amount that can be drawn on the construction loan is $35,000. No amounts have been borrowed against the construction loan.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

You should read the following discussion and analysis of our financial condition and results of operations together with our unaudited condensed consolidated financial statements and the related notes thereto included in Part I, Item 1 of this Quarterly Report on Form 10-Q and the audited consolidated financial statements and notes thereto and management’s discussion and analysis of financial condition and results of operations for the year ended December 31, 2015 included in our Annual Report on Form 10-K for the year ended December 31, 2015 filed on March 4, 2016 with the U.S. Securities and Exchange Commission (“SEC”). This Quarterly Report on Form 10-Q contains “forward-looking statements” within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. All statements, other than statements of historical fact, including statements that refer to our expectations as to the future growth of our business and associated expenses; our expectations as to revenue generation; the future availability of borrowings under our revolving credit facility; the expected future growth of the market for energy efficiency and renewable energy solutions; our backlog, awarded projects and recurring revenue and the timing of such matters; our expectations as to acquisition activity; the impact of any restructuring; the uses of future earnings; our intention to repurchase shares of our Class A common stock; the expected energy and cost savings of our projects; and the expected energy production capacity of our renewable energy plants; and other characterizations of future events or circumstances are forward-looking statements. These statements are often, but not exclusively, identified by the use of words such as “may,” “will,” “expect,” “believe,” “anticipate,” “intend,” “could,” “estimate,” “target,” “project,” “predict” or “continue,” and similar expressions or variations. These forward-looking statements are based on current expectations and assumptions that are subject to risks, uncertainties and other factors that could cause actual results and the timing of certain events to differ materially and adversely from future results expressed or implied by such forward-looking statements. Risks, uncertainties and factors that could cause or contribute to such differences include, but are not limited to, those discussed in the section titled “Risk Factors,” set forth in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2015 and as updated in our Quarterly Report for the quarter ended March 31, 2016. The forward-looking statements in this Quarterly Report on Form 10-Q represent our views as of the date of this

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Quarterly Report on Form 10-Q. Subsequent events and developments may cause our views to change. However, while we may elect to update these forward-looking statements at some point in the future, we undertake no obligation to do so except to the extent required by applicable law. You should, therefore, not rely on these forward-looking statements as representing our views as of any date subsequent to the date of this Quarterly Report on Form 10-Q.

Overview

Ameresco is a leading provider of energy efficiency solutions for facilities throughout North America and Europe. We provide solutions that enable customers to reduce their energy consumption, lower their operating and maintenance costs and realize environmental benefits. Our comprehensive set of services includes upgrades to a facility’s energy infrastructure and the construction and operation of small-scale renewable energy plants.

In September 2015, we entered into an agreement with a third party investor which granted the investor ownership interests in the net assets of certain of our renewable energy project subsidiaries. We entered into this agreement in order to finance the costs of constructing certain project assets which are under long-term customer contracts. We have determined that we are the primary beneficiary in the operational partnership for accounting purposes. Accordingly, we will consolidate the assets and liabilities and operating results of the entities in our consolidated financial statements. We recognize the investor’s share of the net assets of the investor’s funds as redeemable non-controlling interests in our consolidated balance sheets. These income or loss allocations, which will be reflected on our consolidated statements of income, may create significant volatility in our reported results of operations, including potentially changing net income available (loss attributable) to common stockholders from income to loss, or vice versa, from quarter to quarter.

In addition to organic growth, strategic acquisitions of complementary businesses and assets have been an important part of our historical development. Since inception, we have completed numerous acquisitions, which have enabled us to broaden our service offerings and expand our geographical reach.

Our acquisition of the energy consultancy and energy project management business of Energyexcel LLP in the third quarter of 2014 added to our local presence in the United Kingdom (“UK”) and to our commercial and industrial customer base.

Our acquisition of the business of Ennovate Corporation in the first quarter of 2013 increased our footprint and penetration in the Rocky Mountain area. Our acquisition of energy management consulting companies The Energy Services Partnership Limited (now known as Ameresco Limited) and ESP Response Limited in the second quarter of 2013 added a local presence in the UK, expertise and seasoned energy industry professionals to support multi-national customers of our enterprise energy management service offerings.

Effects of Seasonality

We are subject to seasonal fluctuations and construction cycles, particularly in climates that experience colder weather during the winter months, such as the northern United States and Canada, or at educational institutions, where large projects are typically carried out during summer months when their facilities are unoccupied. In addition, government customers, many of which have fiscal years that do not coincide with ours, typically follow annual procurement cycles and appropriate funds on a fiscal-year basis even though contract performance may take more than one year. Further, government contracting cycles can be affected by the timing of, and delays in, the legislative process related to government programs and incentives that help drive demand for energy efficiency and renewable energy projects. As a result, our revenues and operating income in the third and fourth quarter are typically higher, and our revenues and operating income in the first quarter are typically lower, than in other quarters of the year. As a result of such fluctuations, we may occasionally experience declines in revenue or earnings as compared to the immediately preceding quarter, and comparisons of our operating results on a period-to-period basis may not be meaningful.

Our annual and quarterly financial results are also subject to significant fluctuations as a result of other factors, many of which are outside of our control. See “Our operating results may fluctuate significantly from quarter to quarter and may fall below expectations in any particular fiscal quarter” in Item 1A, Risk Factors of our Annual Report on Form 10-K for the year ended December 31,2015 (“Annual Report”).

Backlog and Awarded Projects

Total construction backlog represents projects that are active within our ESPC sales cycle. Our sales cycle begins with the initial contact with the customer and ends, when successful, with a signed contract, also referred to as fully-contracted backlog. Our sales cycle recently has been averaging 18 to 42 months. Awarded backlog is created when a potential customer awards a

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project to Ameresco following a request for proposal. Once a project is awarded but not yet contracted, we typically conduct a detailed energy audit to determine the scope of the project as well as identify the savings that may be expected to be generated from upgrading the customer’s energy infrastructure. At this point, we also determine the sub-contractor, what equipment will be used, and assist in arranging for third party financing, as applicable. Recently, awarded projects have been taking 12 to 18 months to result in a signed contract and thus convert to fully-contracted backlog. It may take longer, however, depending upon the size and complexity of the project. Historically, approximately 90% of our awarded projects ultimately have resulted in a signed contract. After the customer and Ameresco agree to the terms of the contract and the contract becomes executed, the project moves to fully-contracted backlog. The contracts reflected in our fully-contracted backlog typically have a construction period of 12 to 24 months and we typically expect to recognize revenues for such contracts over the same period. Fully-contracted backlog begins converting into revenues generated from backlog on a percentage-of-completion basis once construction has commenced. See “We may not recognize all revenues from our backlog or receive all payments anticipated under awarded projects and customer contracts” and “In order to secure contracts for new projects, we typically face a long and variable selling cycle that requires significant resource commitments and requires a long lead time before we realize revenues” in Item 1A, Risk Factors in our Annual Report.

As of September 30, 2016, we had backlog of approximately $443.8 million in expected future revenues under signed customer contracts for the installation or construction of projects, which we sometimes refer to as fully-contracted backlog; and we also had been awarded projects for which we do not yet have signed customer contracts with estimated total future revenues of an additional $1,054.5 million. As of September 30, 2015, we had fully-contracted backlog of approximately $379.3 million in expected future revenues under signed customer contracts for the installation or construction of projects; and we also had been awarded projects for which we had not yet signed customer contracts with estimated total future revenues of an additional $1,032.6 million.

We define our 12-month backlog as the estimated amount of revenues that we expect to recognize in the next twelve months from our fully-contracted backlog. As of September 30, 2016 and 2015, our 12-month backlog was $285.9 million and $306.8 million, respectively.

Assets in development, which represents the potential design/build project value of small-scale renewable energy plants that have been awarded or for which we have secured development rights, was $149.0 million and $185.2 million as of September 30, 2016 and 2015, respectively.

Critical Accounting Policies and Estimates

This discussion and analysis of our financial condition and results of operations is based upon our condensed consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). The preparation of these condensed consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, expense and related disclosures. The most significant estimates with regard to these condensed consolidated financial statements relate to estimates of final contract profit in accordance with long-term contracts, project development costs, project assets, impairment of goodwill, impairment of long-lived assets, fair value of derivative financial instruments, income taxes and stock-based compensation expense.

Such estimates and assumptions are based on historical experience and on various other factors that management believes to be reasonable under the circumstances. Estimates and assumptions are made on an ongoing basis, and accordingly, the actual results may differ from these estimates.

The following, in no particular order, are certain critical accounting policies that among others, affect our more significant judgments and estimates used in the preparation of our condensed consolidated financial statements:

• Revenue Recognition;

• Project Assets;

• Derivative Financial Instruments; and

• Variable Interest Entities.

Further details regarding our critical accounting policies and estimates can be found in Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our Annual Report. In addition, please refer to Note 2, “Summary of Significant Accounting Policies,” of our Notes to Condensed Consolidated Financial Statements included under

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Part I, Item 1 of this Quarterly Report on Form 10-Q. Management has determined that no material changes concerning our critical accounting policies have occurred since December 31, 2015.

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606). The guidance in this ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards. The guidance in this ASU supersedes the revenue recognition requirements in ASC 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the Codification. This ASU also supersedes some cost guidance included in ASC 605-35, Revenue Recognition-Construction-Type and Production-Type Contracts. In addition, the existing requirements for the recognition of a gain or loss on the transfer of nonfinancial assets that are not in a contract with a customer are amended to be consistent with the guidance on recognition and measurement in this ASU. The FASB has approved a one year deferral of this standard, and this pronouncement is now effective for annual reporting periods beginning after December 15, 2017. Entities would be permitted to adopt the standard as early as the original public entity effective date (i.e., annual reporting periods beginning after December 15, 2016 and interim periods therein). Early adoption prior to that date would not be permitted. Retrospective application of the amendments in this ASU is required. The new guidance must be adopted using either a full retrospective approach for all periods presented in the period of adoption (with some limited relief provided) or a modified retrospective approach. We are currently assessing the impact of this ASU on our consolidated financial statements.

In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements — Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASU 2014-15”). ASU 2014-15 requires management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles of current U.S. auditing standards. Specifically, the amendments (1) provide a definition of the term “substantial doubt”, (2) require an evaluation every reporting period, including interim periods, (3) provide principles for considering the mitigating effect of management’s plans, (4) require certain disclosures when substantial doubt is alleviated as a result of consideration of management’s plans, (5) require an express statement and other disclosures when substantial doubt is still present, and (6) require an assessment for a period of one year after the date that the financial statements are issued (or available to be issued). ASU 2014-15 is effective for annual reporting periods ending after December 15, 2016 and interim periods thereafter. Early adoption is permitted. We do not believe that this pronouncement will have an impact on our consolidated financial statements.

In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis (“ASU 2015-02”). ASU 2015-02 affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. ASU 2015-02 is effective for annual reporting periods beginning after December 15, 2015 and interim periods within those annual reporting periods. We adopted this guidance in the first quarter of fiscal 2016. This pronouncement did not change our previous consolidation conclusions.

In April 2015, the FASB issued ASU 2015-03, Interest — Imputation of Interest (Subtopic 835-03): Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”). ASU 2015-03 requires debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the debt liability rather than as an asset. ASU 2015-03 is effective for annual reporting periods beginning after December 15, 2015, and interim periods within those annual reporting periods. We adopted this accounting standard effective in the first quarter of fiscal 2016. As such, prior periods in our financial statements were retrospectively adjusted.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The guidance in this ASU supersedes the leasing guidance in Topic 840, Leases. Under the new guidance, lessees are required to recognize lease assets and lease liabilities on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. We are currently evaluating the impact of our pending adoption of the new standard on our consolidated financial statements.

In March 2016, the FASB issued ASU No. 2016-09, Compensation-Stock Compensation-Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"). The guidance in this ASU involves several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Under ASU 2016-09, income tax benefits and deficiencies are to be

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recognized as income tax expense or benefit in the statement of operations and the tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. Additionally, under ASU 2016-09, excess tax benefits should be classified along with other income tax cash flows as an operating activity. ASU 2016-09 will be effective for us on January 1, 2017, with early adoption permitted. We are currently evaluating the impact ASU 2016-09 will have on our consolidated financial statements.

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Results of Operations

The following tables set forth certain financial data from the consolidated statements of income (loss) expressed as a percentage of revenues for the periods presented (in thousands):

	Three Months Ended September 30,
	2016					2015
	Dollar			% of		Dollar		% of
	Amount			Revenues		Amount		Revenues
Revenues	$	180,598		100.0	%	$	189,142	100.0	%
Cost of revenues	141,803			78.5	%	152,849		80.8	%
Gross profit	38,795			21.5	%	36,293		19.2	%
Selling, general and administrative expenses	28,852			16.0	%	26,623		14.1	%
Operating income	9,943			5.5	%	9,670		5.1	%
Other expenses, net	2,268			1.3	%	2,149		1.1	%
Income before provision from income taxes	7,675			4.2	%	7,521		4.0	%
Income tax provision	1,865			1.0	%	3,343		1.8	%
Net income	5,810			3.2	%	4,178		2.2	%
Net income attributable to redeemable non-controlling interest	(95		)	(0.1	)%	—		—	%
Net income attributable to Ameresco, Inc.	$	5,715		3.2	%	$	4,178	2.2	%
	Nine Months Ended September 30,
	2016					2015
	Dollar			% of		Dollar		% of
	Amount			Revenues		Amount		Revenues
Revenues	$	477,002		100.0	%	$	457,064	100.0	%
Cost of revenues	378,675			79.4	%	370,232		81.0	%
Gross profit	98,327			20.6	%	86,832		19.0	%
Selling, general and administrative expenses	81,880			17.2	%	76,506		16.7	%
Operating income	16,447			3.4	%	10,326		2.3	%
Other expenses, net	4,961			1.0	%	6,158		1.3	%
Income before provision from income taxes	11,486			2.4	%	4,168		0.9	%
Income tax provision	2,872			0.6	%	2,187		0.5	%
Net income	8,614			1.8	%	1,981		0.4	%
Net loss attributable to redeemable non-controlling interest	149			—	%	—		—	%
Net income attributable to Ameresco, Inc.	$	8,763		1.8	%	$	1,981	0.4	%

Revenues

The following tables set forth a comparison of our revenues for the periods presented (in thousands):

	Three Months Ended September 30,				Dollar			Percentage
	2016		2015		Change			Change
Revenues	$	180,598	$	189,142	$	(8,544	)	(4.5	)%
	Nine Months Ended September 30,				Dollar			Percentage
	2016		2015		Change			Change
Revenues	$	477,002	$	457,064	$	19,938		4.4	%

Revenues decreased $8.5 million, or 4.5%, for the three months ended September 30, 2016 compared to the same period of 2015 primarily due to a $20.2 million decrease in revenues from our U.S. Regions segment and a $4.2 million decrease in

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revenues from our All Other segment, partially offset by a a $11.0 million increase in revenues from our U.S. Federal segment and a $5.8 million increase in revenues from our Small-Scale Infrastructure segment.

Revenues increased $19.9 million, or 4.4%, for the nine months ended September 30, 2016 compared to the same period of 2015 due to a $38.2 million increase in revenues from our U.S. Federal segment, a $15.6 million increase in revenues from our Small-Scale Infrastructure segment, and a $2.4 million increase in revenues from our Canada segment, partially offset by a $26.0 million decrease in revenues from our U.S. Regions segment and a $10.2 million decrease in revenues from All Other.

Cost of Revenues and Gross Profit

The following tables set forth a comparison of our cost of revenues and gross profit for the periods presented (in thousands):

	Three Months Ended September 30,						Dollar			Percentage
	2016			2015			Change			Change
Cost of revenues	$	141,803		$	152,849		$	(11,046	)	(7.2	)%
Gross margin %	21.5		%	19.2		%
	Nine Months Ended September 30,						Dollar			Percentage
	2016			2015			Change			Change
Cost of revenues	$	378,675		$	370,232		$	8,443		2.3	%
Gross margin %	20.6		%	19.0		%

Cost of revenues decreased $11.0 million, or 7.2%, for the three months ended September 30, 2016 and increased $8.4 million, or 2.3%, for the nine months ended September 30, 2016 compared to the same periods of 2015, respectively, primarily due to the changes in revenues described above. Gross margin percentage increased to 21.5% and 20.6% for the three and nine months ended September 30, 2016, respectively, from 19.2% and 19.0% for the same periods of 2015, respectively. The increase in gross margin percentage was primarily due to a favorable mix of higher margin revenues as well as cost budget revisions from a significant project in our Small-Scale Infrastructure segment during the three months ended September 30, 2016, which resulted in an increase in project to date revenues recognized. The increase for the nine months ended September 30, 2016 was also partially due to cost budget revisions on a significant project in our Canada segment during the first quarter of 2015, which resulted in a reduction in project to date revenues recognized and a reserve for potential future losses on the project recorded during the nine months ended September 30, 2015.

As a result of certain acquisitions, we have intangible assets related to customer contracts; these are typically amortized over a period of approximately one to five years from the respective date of acquisition. This amortization is recorded as a cost of revenues in the consolidated statements of income. For the nine months ended September 30, 2016 and 2015, we recorded amortization expense of $0.1 million and $0.7 million, respectively, related to customer contracts.

Selling, General and Administrative Expenses

The following tables set forth a comparison of our selling, general and administrative expenses for the periods presented (in thousands):

	Three Months Ended September 30,				Dollar		Percentage
	2016		2015		Change		Change
Selling, general and administrative expenses	$	28,852	$	26,623	$	2,229	8.4	%
	Nine Months Ended September 30,				Dollar		Percentage
	2016		2015		Change		Change
Selling, general and administrative expenses	$	81,880	$	76,506	$	5,374	7.0	%

Selling, general and administrative expenses increased $2.2 million, or 8.4%, for the three months ended September 30, 2016 primarily due to $2.2 million write-down of accounts receivable related to a customer that declared bankruptcy. Selling, general and administrative expenses increased $5.4 million, or 7.0%, for the nine months ended September 30, 2016 primarily due to $2.9 million in write-downs, primarily in accounts receivable related to the customer bankruptcy and $1.9 million in bad debt expense in our Canada segment.

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Amortization expense of intangible assets related to customer relationships, non-compete agreements, technology and trade names is included in selling, general and administrative expenses in the consolidated statements of income. For the three months ended September 30,2016 and 2015, we recorded amortization expense, related to these intangible assets, of $0.5 million and $0.8 million, respectively. For the nine months ended September 30, 2016 and 2015, we recorded amortization expense, related to these intangible assets, of $1.7 million and $2.4 million, respectively. The decrease was due to certain intangible assets being fully amortized in 2015.

Other Expenses, Net

Other expenses, net includes gains and losses from derivatives and foreign currency transactions, interest income and expenses and amortization of deferred financing costs, net. Other expenses, net, decreased $1.2 million for the nine months ended September 30, 2016 compared to the same period of 2015 primarily due to favorable foreign currency exchange rate fluctuations, partially offset by a $1.0 million increase in interest expense primarily related to the construction-to-term loan we entered into in September 2015.

Income Before Taxes

Income before taxes increased $0.2 million, or 2.0%, to $7.7 million for the three months ended September 30, 2016 from $7.5 million for the same period of 2015 due to the reasons described above. Income before taxes increased $7.3 million or 175.6%, to $11.5 million for the nine months ended September 30, 2016 from $4.2 million for the same period of 2015 due to the reasons described above.

Provision from Income Taxes

The provision for income taxes was $1.9 million for the three months ended September 30, 2016, compared to $3.3 million for the three months ended September 30, 2015. The provision for income taxes was $2.9 million for the nine months ended September 30, 2016, compared to $2.2 million for the nine months ended September 30, 2015. The estimated annual effective tax rate applied for the three months ended September 30, 2016 was 24.3% compared to 44.4% for the three months ended September 30, 2015. The estimated annual effective tax rate applied for the nine months ended September 30, 2016 was 25.0% compared to 52.5% for the same period of 2015. The decrease in the rate compared to the same periods in the prior year was due primarily to the effects of the tax deduction under Internal Revenue Code Section 179D which had expired as of December 31, 2014 and was not available as of June 30, 2015. It was retroactively reinstated in December of 2015, however, and was available for the six months ended June 30, 2016. The current expiration date for the 179D deduction is December 31, 2016.

The principal reasons for the difference between the statutory rate and the estimated annual effective rate for 2016 relate to the effects of the tax deduction under Internal Revenue Code Section 179D and production tax credits to which we are entitled from plants we own. The principal reason for the difference between the statutory rate and the estimated annual effective rate for 2015 were the effects of the valuation allowance required for the expected Canada losses as well as the investment tax credits and production tax credits to which we are entitled from plants we own.

The investment tax credits to which we are entitled fluctuate from year to year based on the cost of the renewable energy plants that we place or expect to place in service in that year.

Net Income and Earnings Per Share

Net income increased $1.6 million, or 39.1%, to $5.8 million for the three months ended September 30, 2016 from $4.2 million for the same period of 2015. Net income increased $6.6 million, to $8.6 million for the nine months ended September 30, 2016 from $2.0 million for the same period of 2015.

Basic and diluted earnings per share for the three months ended September 30, 2016 were $0.12, compared to basic and diluted earnings per share for the three months ended September 30, 2015 of $0.09. Basic and diluted earnings per share for the nine months ended September 30, 2016 were $0.19, an increase of $0.15 compared to the same period of 2015.

Business Segment Analysis (in thousands)

We report results under ASC 280, Segment Reporting. Our reportable segments are U.S. Regions, U.S. Federal, Canada and Small-Scale Infrastructure. Our U.S. Regions, U.S. Federal and Canada segments offer energy efficiency products and services, which include: the design, engineering and installation of equipment and other measures to improve the efficiency and control the operation of a facility’s energy infrastructure; renewable energy solutions and services, which include the construction of small-scale plants that we own or develop for customers that produce electricity, gas, heat or cooling from

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renewable sources of energy; and O&M services. Our Small-Scale Infrastructure segment sells electricity, processed LFG, heat or cooling, produced from renewable sources of energy and generated by small-scale plants that we own. Our Small-Scale Infrastructure segment also now includes certain small-scale plants developed for customers previously included in our U.S. Regions segment. Previously reported amounts have been restated for comparative purposes. The “All Other” category offers enterprise energy management services, consulting services and integrated-PV. These segments do not include results of other activities, such as corporate operating expenses not specifically allocated to the segments.

U.S. Regions

	Three Months Ended September 30,				Dollar			Percentage
	2016		2015		Change			Change
Revenues	$	83,652	$	103,847	$	(20,195	)	(19.4	)%
Income before taxes	$	7,918	$	10,581	$	(2,663	)	(25.2	)%
	Nine Months Ended September 30,				Dollar			Percentage
	2016		2015		Change			Change
Revenues	$	195,856	$	221,875	$	(26,019	)	(11.7	)%
Income before taxes	$	12,732	$	18,656	$	(5,924	)	(31.8	)%

Revenues for our U.S. Regions segment decreased $20.2 million, or 19.4%, to $83.7 million for the three months ended September 30, 2016 and decreased $26.0 million, or 11.7%, to $195.9 million for the nine months ended September 30, 2016, compared to the same periods of 2015, respectively, primarily due to a decrease in the number of active projects.

Income before taxes for our U.S. Regions segment decreased $2.7 million, or 25.2%, to $7.9 million for the three months ended September 30, 2016 and decreased $5.9 million, or 31.8%, to $12.7 million for the nine months ended September 30, 2016, compared to the same periods of 2015, respectively, primarily due to the decrease in revenues described above, which resulted in decreased operating leverage.

U.S. Federal

	Three Months Ended September 30,				Dollar		Percentage
	2016		2015		Change		Change
Revenues	$	46,498	$	35,491	$	11,007	31.0	%
Income before taxes	$	5,338	$	4,332	$	1,006	23.2	%
	Nine Months Ended September 30,				Dollar		Percentage
	2016		2015		Change		Change
Revenues	$	128,266	$	90,071	$	38,195	42.4	%
Income before taxes	$	16,303	$	12,632	$	3,671	29.1	%

Revenues for our U.S. Federal segment increased $11.0 million, or 31.0%, to $46.5 million for the three months ended September 30, 2016 and increased $38.2 million, or 42.4%, to $128.3 million for the nine months ended September 30, 2016, compared to the same periods of 2015, respectively, primarily due to an increase in project size and the timing of revenue recognized as a result of the phase of active projects.

Income before taxes for our U.S. Federal segment increased $1.0 million, or 23.2%, to $5.3 million for the three months ended September 30, 2016, compared to the same period of 2015 primarily due to the increase in revenues described above. Income before taxes for our U.S. Federal segment increased $3.7 million, or 29.1%, to $16.3 million for the nine months ended September 30, 2016, compared to the same period of 2015 primarily due to the increase in revenue described above, partially offset by a budget revision on a large project in the second quarter of 2016.

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Canada

	Three Months Ended September 30,						Dollar			Percentage
	2016			2015			Change			Change
Revenues	$	12,018		$	12,931		$	(913	)	(7.1	)%
Loss before taxes	$	(154	)	$	(1,660	)	$	1,506		(90.7	)%
	Nine Months Ended September 30,						Dollar			Percentage
	2016			2015			Change			Change
Revenues	$	40,023		$	37,663		$	2,360		6.3	%
Loss before taxes	$	(1,457	)	$	(7,238	)	$	5,781		(79.9	)%

Revenues for our Canada segment decreased $0.9 million, or 7.1%, to $12.0 million for the three months ended September 30, 2016 compared to the same period of 2015 primarily due to the phase of active projects. Revenues for our Canada segment increased $2.4 million, or 6.3%, to $40.0 million for the nine months ended September 30, 2016, compared to the same periods of 2015, primarily due to cost budget revisions, during the first quarter of 2015, on a significant project which resulted in a reduction in project to date revenues recognized in 2015, as well as an increase in the size of active projects in 2016.

Loss before taxes for our Canada segment decreased $1.5 million to $0.2 million for the three months ended September 30, 2016 compared to the same period of 2015 primarily due improved gross margin on active projects. Loss before taxes for our Canada segment decreased $5.8 million, or 79.9%, to $1.5 million for the nine months ended September 30, 2016, compared to the same periods of 2015 primarily due to a reserve in 2015 for potential future losses on the significant project described above as well as improved gross margin on active projects, partially offset by $1.9 million of bad debt expense recorded during the second quarter of 2016.

Small-Scale Infrastructure

	Three Months Ended September 30,				Dollar		Percentage
	2016		2015		Change		Change
Revenues	$	21,790	$	16,025	$	5,765	36.0	%
Income before taxes	$	5,312	$	2,204	$	3,108	141.0	%
	Nine Months Ended September 30,				Dollar		Percentage
	2016		2015		Change		Change
Revenues	$	61,543	$	45,947	$	15,596	33.9	%
Income before taxes	$	9,923	$	4,553	$	5,370	117.9	%

Revenues for our Small-Scale Infrastructure segment increased $5.8 million, or 36.0%, to $21.8 million for the three months ended September 30, 2016 and increased $15.6 million, or 33.9%, to $61.5 million for the nine months ended September 30, 2016, compared to the same periods of 2015, primarily due to the active development of a small-scale plant we are constructing for a customer during the nine months ended September 30, 2016, as compared to the same period of 2015 where no similar projects were in development.

Income before taxes for our Small-Scale Infrastructure segment increased $3.1 million, or 141.0%, to $5.3 million for the three months ended September 30, 2016 compared to the same period of 2015 primarily due to the increase in revenues described above. Income before taxes for our Small-Scale Infrastructure segment increased $5.4 million, or 117.9%, to $9.9 million for the nine months ended September 30, 2016, primarily due to the increase in revenues described above.

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All Other & Unallocated Corporate Activity

	Three Months Ended September 30,						Dollar			Percentage
	2016			2015			Change			Change
Revenues	$	16,640		$	20,848		$	(4,208	)	(20.2	)%
Loss before taxes	$	(261	)	$	(1,701	)	$	1,440		(84.7	)%
Unallocated corporate activity	$	(10,478	)	$	(6,235	)	$	(4,243	)	68.1	%
	Nine Months Ended September 30,						Dollar			Percentage
	2016			2015			Change			Change
Revenues	$	51,314		$	61,508		$	(10,194	)	(16.6	)%
Loss before taxes	$	(971	)	$	(4,795	)	$	3,824		(79.7	)%
Unallocated corporate activity	$	(25,044	)	$	(19,640	)	$	(5,404	)	27.5	%

Revenues not allocated to segments and presented as All Other decreased $4.2 million, or 20.2%, to $16.6 million for the three months ended September 30, 2016 and decreased $10.2 million, or 16.6%, to $51.3 million for the nine months ended September 30, 2016, compared to the same periods of 2015 primarily due to our anticipated decrease in integrated-PV sales as a result of a weakening of sales to customers for oilfield microgrid applications.

Loss before taxes not allocated to segments and presented as all other decreased $1.4 million to $0.3 million for the three months ended September 30, 2016 and decreased $3.8 million, or 79.7%, to a loss of $1.0 million for the nine months ended September 30, 2016, compared to the same periods of 2015 primarily due to the positive impact of our 2015 restructuring efforts including cost savings realized in our software group.

Unallocated corporate activity includes all corporate level selling, general and administrative expenses and other expenses not allocated to the segments. We do not allocate any indirect expenses to the segments.

Liquidity and Capital Resources

Sources of liquidity. Since inception, we have funded operations primarily through cash flow from operations, advances from Federal ESPC projects and various forms of debt. We believe that available cash and cash equivalents and availability under our revolving senior secured credit facility, combined with our access to credit markets, will be sufficient to fund our operations through 2016 and thereafter.

Proceeds from our Federal ESPC projects are generally received through agreements to sell the ESPC receivables related to certain ESPC contracts to third-party investors. We use the advances from the investors under these agreements to finance the projects. Until recourse to us ceases for the ESPC receivables transferred to the investor, upon final acceptance of the work by the government customer, we are the primary obligor for financing received. The transfers of receivables under these agreements do not qualify for sales accounting until final customer acceptance of the work, so the advances from the investors are not classified as operating cash flows. Cash draws that we receive under these ESPC agreements are recorded as financing cash inflows. The use of the cash received under these arrangements to pay project costs is classified as operating cash flows. Due to the manner in which the ESPC contracts with the third-party investors are structured, our reported operating cash flows are materially impacted by the fact that operating cash flows only reflect the ESPC contract expenditure outflows and do not reflect any inflows from the corresponding contract revenues. Upon acceptance of the project by the federal customer the ESPC receivable and corresponding ESPC liability are removed from our consolidated balance sheet as a non-cash settlement. See Note 2, “Summary of Significant Accounting Policies”, to our Notes to Condensed Consolidated Financial Statements appearing in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Our service offering also includes the development, construction and operation of small-scale renewable energy plants. Small-scale renewable energy projects, or project assets, can either be developed for the portfolio of assets that we own and operate or designed and built for customers. Expenditures related to projects that we own are recorded as cash outflows from investing activities. Expenditures related to projects that we build for customers are recorded as cash outflows from operating activities as cost of revenues.

The amount of interest capitalized relating to construction financing during the period of construction for the nine months ended September 30, 2016 and 2015 was $0.6 million and $0.5 million, respectively.

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Cash flows from operating activities. Operating activities used $47.4 million of net cash during the nine months ended September 30, 2016. During that period, we had net income of $8.6 million, which is net of non-cash compensation, depreciation, amortization, deferred income taxes, unrealized foreign exchange (gain) loss and other non-cash items totaling $24.6 million. Decreases in costs and estimated earnings in excess of billings and billings in excess of costs and estimated earnings, net, project development costs and an increase in income taxes payable provided $21.8 million. These were offset by increases in restricted cash, accounts receivable, including retainage, inventory, prepaid expenses and other current assets and other assets and decreases in accounts payable, accrued expenses and other current liabilities and other liabilities, which used $19.0 million in cash. Increases in Federal ESPC receivables used an additional $83.4 million. As described above, Federal ESPC operating cash flows only reflect the ESPC expenditure outflows and do not reflect any inflows from the corresponding contract revenues, which are recorded as cash inflows from financing activities due to the timing of the receipt of cash related to the assignment of the ESPC receivables to the third-party investors.

Operating activities used $32.6 million of net cash during the nine months ended September 30, 2015. During that period, we had net income of $2.0 million, which is net of non-cash compensation, depreciation, amortization, deferred income taxes, unrealized foreign exchange (gain) loss and other non-cash items totaling $18.1 million. Increases in accounts payable, accrued expenses and other current liabilities and income taxes payable provided $26.1 million in cash. These were offset by increases in restricted cash, accounts receivable, including retainage, inventory, costs and estimated earnings in excess of billings and billings in excess of costs and estimated earnings, net, prepaid expenses and other current assets, project development costs and other assets and a decrease in other liabilities, which used $28.2 million. An increase in Federal ESPC receivables used an additional $50.6 million.

Cash flows from investing activities. Cash flows from investing activities during the nine months ended September 30, 2016 used $47.9 million. We invested $45.2 million on purchases of project assets during the nine months ended September 30, 2016. We plan to invest an additional $25 million to $40 million on capital expenditures, principally for renewable energy plants, for the remainder of 2016. In addition, we invested $2.7 million in purchases of other property and equipment.

Cash flows from investing activities during the nine months ended September 30, 2015 used $30.1 million. Development of our renewable energy plants used $29.9 million. In addition, we invested $1.0 million in purchases of other property and equipment and received $0.9 million from the sale of assets.

Cash flows from financing activities. Cash flows from financing activities during the nine months ended September 30, 2016 provided $92.8 million. This was primarily due to proceeds from redeemable non-controlling interest of $6.5 million, $3.0 million of restricted cash released into operating cash, $17.0 million received under our sale-leaseback financing arrangement, proceeds from project financings of $7.8 million, net draws on our revolving credit facility of $7.5 million and proceeds from exercises of options of $1.0 million. This was partially offset by payments on long-term debt of $9.2 million, repurchase of stock of $4.5 million, including fees, and payments of financing fees of $1.3 million. Proceeds from Federal ESPC projects provided $65.1 million.

Cash flows from financing activities during the nine months ended September 30, 2015 provided $58.5 million. This was primarily due to $7.6 million received under our sale-leaseback financing arrangement, proceeds from project financings of $4.6 million and proceeds from exercises of options of $0.6 million. These was partially offset by payments on long-term debt of $9.1 million, net repayments on our revolving credit facility of $5.0 million and payments of financing fees of $1.9 million. Proceeds from Federal ESPC projects provided $61.8 million.

Senior Secured Credit Facility — Revolver and Term Loan

On June 30, 2015, we entered into a third amended and restated bank credit facility with two banks. The new credit facility replaces and extended our existing credit facility, which was scheduled to expire in accordance with its terms on June 30, 2016. The revolving credit facility matures on June 30, 2020 and the term loan facility matures on June 30, 2018, when all amounts will be due and payable in full. We expect to use the new credit facility for our general corporate purposes, including permitted acquisitions, refinancing of existing indebtedness and working capital. In July 2016, the Company entered into an amendment to the third amended and restated bank credit facility. Under this amendment, the requirement of the total funded debt to EBITDA ratio was amended as described below.

The credit facility consists of a $60.0 million revolving credit facility and a $17.1 million term loan. The amount of the term loan represents the amount outstanding under our existing term loan at closing. The revolving credit facility may be increased by up to an additional $25.0 million at our option if lenders are willing to provide such increased commitments, subject to certain conditions. Up to $20.0 million of the revolving credit facility may be borrowed in Canadian dollars, Euros

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and Pounds Sterling. We are the sole borrower under the credit facility. The obligations under the credit facility are guaranteed by certain of our direct and indirect wholly owned domestic subsidiaries and are secured by a pledge of all of our and such of our subsidiary guarantors’ assets, other than the equity interests of certain subsidiaries and assets held in non-core subsidiaries (as defined in the agreement). At September 30, 2016, there was $18.7 million borrowings outstanding and $41.3 million available under the revolving credit facility and $10.0 million outstanding under the term loan.

The interest rate for borrowings under the credit facility is based on, at our option, either (1) a base rate equal to a margin of 0.50% or 0.25%, depending on our ratio of Total Funded Debt to EBITDA (each as defined in the agreement), over the highest of (a) the federal funds effective rate, plus 0.50%, (b) Bank of America’s prime rate and (c) a rate based on the London interbank deposit rate (“LIBOR”) plus 1.50%, or (2) the one-, two- three- or six-month LIBOR plus a margin of 2.00% or 1.75%, depending on our ratio of Total Funded Debt to EBITDA. A commitment fee of 0.375% is payable quarterly on the undrawn portion of the revolving credit facility. At September 30, 2016, the interest rate for borrowings under the revolving credit facility was 3.75% and interest rate for borrowings under the term loan was 2.59%.

The revolving credit facility does not require amortization of principal. The term loan requires quarterly principal payments of $1.4 million, with the balance due at maturity. All borrowings may be paid before maturity in whole or in part at our option without penalty or premium, other than reimbursement of any breakage and deployment costs in the case of LIBOR borrowings.

The credit facility limits our ability to, among other things: incur additional indebtedness; incur liens or guarantee obligations; merge, liquidate or dispose of assets; make acquisitions or other investments; enter into hedging agreements; pay dividends and make other distributions and engage in transactions with affiliates, except in the ordinary course of business on an arms’ length basis.

Under the credit facility, we may not invest cash or property in, or loan to, our non-core subsidiaries in aggregate amounts exceeding 49% of our consolidated stockholders’ equity. In addition, under the credit facility, we and our core subsidiaries must maintain the following financial covenants:

• a ratio of total funded debt to EBITDA of:

- less than 2.00 to 1.0 as of the end of each fiscal quarter ending on or before June 30, 2016;

- less than 2.75 to 1.0 as of the end of each fiscal quarter ending September 30, 2016, December 31, 2016, March 31, 2017 and June 30, 2017; and

- less than 2.00 to 1.0 as of the end of each fiscal quarter ending September 30, 2017 and thereafter; and

• a debt service coverage ratio (as defined in the agreement) of at least 1.5 to 1.0.

Any failure to comply with the financial or other covenants of the credit facility would not only prevent us from being able to borrow additional funds, but would constitute a default, permitting the lenders to, among other things, accelerate the amounts outstanding, including all accrued interest and unpaid fees, under the credit facility, to terminate the credit facility, and enforce liens against the collateral.

The credit facility also includes several other customary events of default, including a change in control, permitting the lenders to accelerate the indebtedness, terminate the credit facility, and enforce liens against the collateral.

As of September 30, 2016, we were in compliance with all of the financial and operational covenants in the senior credit facility. In addition, we do not consider it likely that we will fail to comply with these covenants for the next twelve months.

Project Financing

Construction and Term Loans. We have entered into a number of construction and term loan agreements for the purpose of constructing and owning certain renewable energy plants. The physical assets and the operating agreements related to the renewable energy plants are owned by wholly owned, single member special purpose subsidiaries. These construction and term loans are structured as project financings made directly to a subsidiary, and upon acceptance of a project, the related construction loan converts into a term loan. While we are required under GAAP to reflect these loans as liabilities on our consolidated balance sheet, they are generally nonrecourse and not direct obligations of Ameresco, Inc. As of September 30, 2016, we had outstanding $91.0 million in aggregate principal amount under these loans with maturities at various dates from 2017 to 2031. Effective interest rates, after consideration for our interest rate swap contracts, ranged from 4.7% to 7.3%.

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In September 2015, the Company entered into a credit and guaranty agreement for use in providing non-recourse financing for certain of its solar-PV projects currently under construction. The credit and guaranty agreement provides for a $20.7 million construction-to-term loan credit facility and bears interest at a variable rate. On March 30, 2016, the construction loan was converted to a term loan. At September 30, 2016, $20.6 million was outstanding under the term loan. The variable rate for this loan at September 30, 2016 was 3.3%.

One loan with an outstanding balance as of September 30, 2016 totaling $2.8 million, requires Ameresco, Inc. to provide assurance to the lender of the project performance. A second loan, entered into during 2012, with an outstanding balance as of September 30, 2016 of $36.4 million requires Ameresco, Inc. to provide assurance to the lender of reimbursement upon any recapture of certain renewable energy Government cash grants upon the occurrence of events that cause the recapture of such grants. As of December 31, 2015, we had outstanding $87.5 million in aggregate principal amount under these loans. Effective interest rates, after consideration for our interest rate swap contracts, ranged from 2.8% to 7.3%. These loans mature at various dates from 2017 to 2028.

These construction and term loan agreements require us to comply with a variety of financial and operational covenants. As of September 30, 2016 we were in compliance with all of these financial and operational covenants. In addition, we do not consider it likely that we will fail to comply with these covenants during the term of these agreements.

Federal ESPC Liabilities. We have arrangements with certain lenders to provide advances to us during the construction or installation of projects for certain customers, typically federal governmental entities, in exchange for our assignment to the lenders of our rights to the long-term receivables arising from the ESPCs related to such projects. These financings totaled $108.0 million and $122.0 million in principal amounts at September 30, 2016 and December 31, 2015, respectively. Under the terms of these financing arrangements, we are required to complete the construction or installation of the project in accordance with the contract with our customer, and the debt remains on our consolidated balance sheets until the completed project is accepted by the customer.

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Sale-Leaseback. During the first quarter of 2015, we entered into an agreement with an investor which gives us the option to sell and contemporaneously lease back solar photovoltaic (“solar-PV”) projects. In September 2016, we amended our agreement with the investor whereas the investor has committed up to a maximum combined funding amount of $100,000 through June 30, 2017 on certain projects. As of September 30, 2016, $70.5 million remained available under the lending commitment. During the quarter ended September 30, 2016, we sold one solar-PV project and in return received $6.0 million as part of this arrangement. No solar-PV projects were sold during the quarter ended September 30, 2015. While we are required under GAAP to reflect these lease payments as liabilities on our consolidated balance sheet, they are generally nonrecourse and not direct obligations of Ameresco, Inc., except that Ameresco, Inc. has guaranteed certain obligations relating to taxes and project warranties, operation and maintenance.

Contractual Obligations

The following table summarizes our significant contractual obligations and commitments as of September 30, 2016 (in thousands):

	Payments due by Period
			Less than		One to		Three to		More than
	Total		One Year		Three Years		Five Years		Five Years
Senior Secured Credit Facility:
Revolver	$	18,733	$	—	$	—	$	18,733	$	—
Term Loan	10,000		5,714		4,286		—		—
Project Financing:
Construction and term loans	90,975		7,887		15,929		37,949		29,210
Federal ESPC liabilities(1)	108,039		—		108,039		—		—
Interest obligations(2)	47,098		6,458		10,922		8,683		21,035
Capital lease liabilities	15,312		1,645		4,608		4,228		4,831
Operating leases	17,742		4,449		6,565		3,261		3,467
Total	$	307,899	$	26,153	$	150,349	$	72,854	$	58,543

(1	)	Federal ESPC arrangements relate to the installation and construction of projects for certain customers, typically federal governmental entities, where we assign to the third-party lenders our right to customer receivables. We are relieved of the liability when the project is completed and accepted by the customer. We typically expect to be relieved of the liability between one and three years from the date of project construction commencement. The table does not include, for our Federal ESPC liability arrangements, the difference between the aggregate amount of the long-term customer receivables sold by us to the lender and the amount received by us from the lender for such sale.
(2	)	For both the revolver and term loan portion of our senior secured credit facility, the table above assumes that the variable interest rate in effect at September 30, 2016 remains constant for the term of the facility.

Off-Balance Sheet Arrangements

We did not have during the periods presented, and we do not currently have, any off-balance sheet arrangements, as defined under SEC rules, such as relationships with unconsolidated entities or financial partnerships, which are often referred to as structured finance or special purpose entities, established for the purpose of facilitating financing transactions that are not required to be reflected on our balance sheet.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

As of September 30, 2016, there have been no significant changes in market risk exposures that materially affected the quantitative and qualitative disclosures as described in Item 7A to our Annual Report.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our principal executive officer and principal financial officer, evaluated the effectiveness of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, as of the end of the period covered by this quarterly report, or the evaluation date. Disclosure controls and procedures are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the

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Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms. Our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives, and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Our management, after evaluating the effectiveness of our disclosure controls and procedures as of the evaluation date, concluded that as of the evaluation date, our disclosure controls and procedures were effective at a reasonable level of assurance.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting during our most recent fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II - OTHER INFORMATION

Item 1. Legal Proceedings

In the ordinary conduct of our business we are subject to periodic lawsuits, investigations and claims. Although we cannot predict with certainty the ultimate resolution of such lawsuits, investigations and claims against us, we do not believe that any currently pending or threatened legal proceedings to which we are a party will have a material adverse effect on our business, results of operations or financial condition.

For additional information about certain proceedings, please refer to Note 5, “Commitments and Contingencies”, to our Condensed Consolidated Financial Statements included included under Part I, Item 1 of this Quarterly Report on Form 10-Q, which is incorporated into this item by reference.

Item 1A. Risk Factors

As of September 30, 2016, there have been no material changes to the risk factors described in Item 1A to our Annual Report on Form 10-K for the year ended December 31, 2015 and Item 1A to our Quarterly Report on Form 10-Q for the quarter ended March 31, 2016.

Item 2. Unregistered Sales of Equity and Use of Proceeds

Stock Repurchase Program

The following table provides information as of and for the quarter ended September 30, 2016 regarding shares of our Class A common stock that were repurchased under our stock repurchase program authorized by the Board of Directors on April 27, 2016 (the “Repurchase Program”):

Period	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs
July 1, 2016 - July 31, 2016	77,500	$	4.77	77,500	$	7,698,403
August 1, 2016 - August 31, 2016	189,757	4.83		189,757	6,781,672
September 1, 2016 - September 30, 2016	235,989	5.06		235,989	5,586,705
Total	503,246	$	4.93	503,246	$	5,586,705

Under the Repurchase Program, we are authorized to repurchase up to $10.0 million of our Class A common stock. Stock repurchases may be made from time to time through the open market and privately negotiated transactions. The amount and timing of any share repurchases will depend upon a variety of factors, including the trading price of our Class A common stock, liquidity, securities laws restrictions, other regulatory restrictions, potential alternative uses of capital, and market and economic conditions.  The Repurchase Program may be suspended or terminated at any time without prior notice, and has no expiration date.

Item 6. Exhibits

The exhibits listed in the Exhibit Index immediately preceding the exhibits are filed (other than exhibit 32.1) as part of this Quarterly Report on Form 10-Q and such Exhibit Index is incorporated herein by reference.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	AMERESCO, INC.
Date: November 1, 2016	By:	/s/ John R. Granara, III
		John R. Granara, III
		Vice President and Chief Financial Officer (duly authorized and principal financial officer)

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Exhibit Index

Exhibit Number	Description
10.1*	Amendment No. 3 to Third Amended and Restated Credit and Security Agreement dated July 27, 2016 among Ameresco, Inc., certain guarantors party thereto, certain lenders party thereto from time to time and Bank of America, N.A. as Administrative Agent.
31.1*	Principal Executive Officer Certification required by Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Principal Financial Officer Certification required by Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1**	Certifications pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101*	The following condensed consolidated financial statements from Ameresco, Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2016, formatted in XBRL (Extensible Business Reporting Language): (i) Consolidated Balance Sheets (ii) Consolidated Statements of Income (Loss), (iii) Consolidated Statements of Comprehensive Income (Loss), (iv) Consolidated Statement of Changes in Redeemable Non-Controlling Interest and Stockholders’ Equity, (v) Consolidated Statements of Cash Flows, and (vi) Notes to Condensed Consolidated Financial Statements.
	*Filed herewith.
	**Furnished herewith.

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EX-10.1

Exhibit 10.1

Execution Version

AMENDMENT NO. 3 TO THIRD AMENDED AND RESTATED CREDIT AND SECURITY AGREEMENT

This AMENDMENT NO. 3 TO THIRD AMENDED AND RESTATED CREDIT AND SECURITY AGREEMENT is dated as of July 27, 2016 (this “Amendment”), among AMERESCO, INC. (the “Borrower”), THE GUARANTORS PARTY HERETO (the "Guarantors" and collectively with the Borrower, the "Loan Parties"), THE LENDERS PARTY HERETO (the “Lenders”), and BANK OF AMERICA, N.A., as administrative agent (the “Agent”).

WHEREAS, the Loan Parties, the Lenders, and the Agent are parties to that certain Third Amended and Restated Credit and Security Agreement dated as of June 30, 2015, as heretofore amended, among the Borrower, the Guarantors, the Lenders, and the Agent (as amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”);

WHEREAS, the Loan Parties, the Agent and the Lenders wish to revise certain provisions of the Credit Agreement, as described herein;

NOW, THEREFORE, in consideration of the foregoing and the agreements contained herein, the parties agree that the Credit Agreement is hereby amended as follows:

1.Capitalized Terms. Except as otherwise expressly defined herein, all capitalized terms used herein which are defined in the Credit Agreement have the same meanings herein as therein, except to the extent that such meanings are amended hereby.

2.    Amendment to Credit Agreement. Section 9.10(a) of the Credit Agreement is hereby deleted and replaced with the following:

(a)    Total Funded Debt to EBITDA Ratio. The Loan Parties shall not permit the Core Leverage Ratio (i) as of the end of each fiscal quarter ending on or before June 30, 2016, to exceed 2.00 to 1.00, (ii) as of the end of each fiscal quarter ending September 30, 2016, December 31, 2016, March 31, 2017 and June 30, 2017, to exceed 2.75 to 1.00, and (iii) as of the end of each fiscal quarter ending September 30, 2017 and thereafter, to exceed 2.00 to 1.00.

3.    Confirmation of Guaranty by Guarantors. Each Guarantor hereby confirms and agrees that all indebtedness, obligations or liability of the Borrower under the Credit Agreement as amended hereby, whether any such indebtedness, obligations and liabilities are now existing or hereafter arising, due or to become due, absolute or contingent, or direct or indirect, constitute “Guaranteed Obligations” under and as defined in the Credit Agreement and, subject to the limitation set forth in Section 4.1 of the Credit Agreement, are guaranteed by and entitled to the benefits of the Guaranty set forth in Article 4 of the Credit Agreement. Each Guarantor hereby ratifies and confirms the terms and provisions of such Guarantor’s Guaranty and agrees that all of such terms and provisions remain in full force and effect.

4.    Confirmation of Security Interests. Each Loan Party (other than the Special Guarantors) hereby confirms and agrees that all indebtedness, obligations and liabilities of the

Loan Parties under the Credit Agreement as amended hereby, whether any such indebtedness, obligations and liabilities are now existing or hereafter arising, due or to become due, absolute or contingent, or direct or indirect, constitute “Secured Obligations” under and as defined in the Credit Agreement and are secured by the Collateral and entitled to the benefits of the grant of security interests pursuant to Article 5 of the Credit Agreement. The Loan Parties (other than the Special Guarantors) hereby ratify and confirm the terms and provisions of Article 5 of the Credit Agreement and agree that, after giving effect to this Amendment, all of such terms and provisions remain in full force and effect.

5.    No Default; Representations and Warranties, etc. The Loan Parties hereby confirm that, after giving effect to this Amendment, (i) the representations and warranties of the Loan Parties contained in Article 6 of the Credit Agreement and the other Loan Documents (A) that contain a materiality qualification are true and correct on and as of the date hereof as if made on such date (except to the extent that such representations and warranties expressly relate to an earlier date), and (B) that do not contain a materiality qualification are true are true and correct in all material respects on and as of the date hereof as if made on such date (except to the extent that such representations and warranties expressly relate to an earlier date), and (ii) no Default or Event of Default shall have occurred and be continuing. Each Loan Party hereby further represents and warrants that (a) the execution, delivery and performance by such Loan Party of this Amendment (i) have been duly authorized by all necessary action on the part of such Loan Party, (ii) will not violate any applicable law or regulation or the organizational documents of such Loan Party, (iii) will not violate or result in a default under any indenture, agreement or other instrument binding on such Loan Party or any of its assets that will have a Material Adverse Effect, and (iv) do not require any consent, waiver, approval, authorization or order of, or filing, registration or qualification with, any court or governmental authority or any Person (other than the Agent and the Lenders) which has not been made or obtained; and (b) it has duly executed and delivered this Amendment.

6.    Conditions to Effectiveness. This Amendment shall become effective upon the receipt by the Agent of the following:

(a)    counterparts of this Amendment duly executed by each of the parties hereto or written evidence reasonably satisfactory to the Agent that each of the parties hereto has signed a counterpart of this Amendment; and

(b)    payment by the Borrower to the Agent for the account of the Lenders of an amendment fee of $75,000, to be allocated to the Lenders in proportion to their respective Commitments.

7.    Miscellaneous.

(a)    Except to the extent specifically amended hereby, the Credit Agreement, the Loan Documents and all related documents shall remain in full force and effect. This Amendment shall constitute a Loan Document. Whenever the terms or sections amended hereby shall be referred to in the Credit Agreement, Loan Documents or such other documents (whether directly or by incorporation into other defined terms), such defined terms shall be deemed to refer to those terms or sections as amended by this Amendment.

2

(b)    This Amendment may be executed in any number of counterparts, each of which, when executed and delivered, shall be an original, but all counterparts shall together constitute one instrument. Delivery of an executed counterpart to this Amendment by telecopy or other electronic means shall be effective as an original and shall constitute a representation that an original will be delivered.

(c)    This Amendment shall be governed by the laws of the Commonwealth of Massachusetts and shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns.

(d)    The Loan Parties agree to pay all reasonable expenses, including legal fees and disbursements incurred by the Agent in connection with this Amendment and the transactions contemplated hereby.

[Signature Pages Follow]

3

IN WITNESS WHEREOF, the parties hereto have executed this Amendment which shall be deemed to be a sealed instrument as of the date first above written.

BORROWER

AMERESCO, INC.

By: /s/ John R. Granara, III______________

Name: John R. Granara, III

Title: Vice President & Chief Financial Officer

GUARANTORS

AMERESCO ENERTECH, INC.

AMERESCO FEDERAL SOLUTIONS, INC.

AMERESCO PLANERGY HOUSING, INC.

AMERESCO QUANTUM, INC.

AMERESCO SELECT, INC.

AMERESCOSOLUTIONS, INC.

APPLIED ENERGY GROUP INC.

SIERRA ENERGY COMPANY

By: /s/ John R. Granara, III______________

Name: John R. Granara, III

Title: Treasurer

AMERESCO SOUTHWEST, INC.

By: /s/ John R. Granara, III______________

Name: John R. Granara, III

Title: Vice President and Treasurer

E. THREE CUSTOM ENERGY SOLUTIONS, LLC.

By: Sierra Energy Company, its sole member

By: /s/ John R. Granara, III______________

Name: John R. Granara, III

Title: Treasurer

[Signature Page to Amendment No. 3 to Third Amended Ameresco Credit and Security Agreement]

AMERESCO ASSET SUSTAINABILITY GROUP LLC

AMERESCO CT LLC

AMERESCO DELAWARE ENERGY LLC

AMERESCO EVANSVILLE, LLC

AMERESCO HAWAII LLC

AMERESCO INTELLIGENT SYSTEMS, LLC

AMERESCO LFG HOLDINGS LLC

AMERESCO PALMETTO LLC

AMERESCO SOLAR, LLC

AMERESCO SOLAR NEWBURYPORT LLC

AMERESCO STAFFORD LLC

AMERESCO WOODLAND MEADOWS ROMULUS LLC

SELDERA LLC

SOLUTIONS HOLDINGS, LLC

By: Ameresco, Inc., its sole member

By: /s/ John R. Granara, III______________

Name: John R. Granara, III

Title: Vice President & Chief Financial Officer

AMERESCO SOLAR - PRODUCTS LLC

AMERESCO SOLAR - SOLUTIONS LLC

AMERESCO SOLAR - TECHNOLOGIES LLC

By: Ameresco Solar LLC, its sole member

By: Ameresco, Inc., its sole member

By: /s/ John R. Granara, III______________

Name: John R. Granara, III

Title: Vice President & Chief Financial Officer

[Signature Page to Amendment No. 3 to Third Amended Ameresco Credit and Security Agreement]

AGENT:

BANK OF AMERICA, N.A.

By: /s/ Darleen R DiGrazia__________________

Name: Darleen R DiGrazia

Title: Vice President

LENDERS:

BANK OF AMERICA, N.A.

By: /s/ John F Lynch_______________________

Name: John F Lynch

Title: Senior Vice President

WEBSTER BANK, N.A.

By: /s/ Ann M Meade_______________________

Name: Ann M Meade

Title: Senior Vice President

[Signature Page to Amendment No. 3 to Third Amended Ameresco Credit and Security Agreement]

EX-31.1

Exhibit 31.1

PRINCIPAL EXECUTIVE OFFICER CERTIFICATION

I, George P. Sakellaris, certify that:

1.	I have reviewed this Quarterly Report on Form 10-Q of Ameresco, Inc. (the “Registrant”);
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;
4.	The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:
	(a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	(b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	(c)	Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	(d)	Disclosed in this report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and
5.	The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):
	(a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and
	(b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

Date: November 1, 2016	/s/ George P. Sakellaris
	George P. Sakellaris
	President and Chief Executive Officer (principal executive officer)

EX-31.2

Exhibit 31.2

PRINCIPAL FINANCIAL OFFICER CERTIFICATION

I, John R. Granara, III, certify that:

1.	I have reviewed this Quarterly Report on Form 10-Q of Ameresco, Inc. (the “Registrant”);
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;
4.	The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:
	(a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	(b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	(c)	Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	(d)	Disclosed in this report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and
5.	The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):
	(a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and
	(b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

Date: November 1, 2016	/s/ John R. Granara, III
	John R. Granara, III
	Vice President and Chief Financial Officer (principal financial officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT

TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Ameresco, Inc. (the “Company”) to which this certification is attached and as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned officers of the Company hereby certifies, pursuant to Rule 13a-14(b) and 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)	The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2)	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
Date: November 1, 2016		/s/ George P. Sakellaris
		George P. Sakellaris
		President and Chief Executive Officer (principal executive officer)
Date: November 1, 2016		/s/ John R. Granara, III
		John R. Granara, III
		Vice President and Chief Financial Officer (principal financial officer)

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 28, 2016
Entity Information [Line Items]
Entity Registrant Name	Ameresco, Inc.
Entity Central Index Key	0001488139
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Class A
Entity Information [Line Items]
Common Stock		27,849,019
Common Class B
Entity Information [Line Items]
Common Stock		18,000,000

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 18,357	$ 21,645
Restricted cash	12,449	16,236
Accounts receivable, net	80,737	73,372
Accounts receivable retainage, net	21,797	21,454
Costs and estimated earnings in excess of billings	60,085	88,334
Inventory, net	13,388	13,223
Prepaid expenses and other current assets	14,728	11,745
Income tax receivable	0	2,151
Project development costs	15,037	15,538
Total current assets	236,578	263,698
Federal ESPC receivable	124,888	125,804
Property and equipment, net	5,637	5,328
Project assets, net	279,257	244,309
Goodwill	58,361	59,085
Intangible assets, net	4,615	6,770
Other assets	24,758	18,446
Total assets	734,094	723,440
Current liabilities:
Current portions of long-term debt and capital lease liabilities	15,246	13,427
Accounts payable	125,014	114,759
Accrued expenses and other current liabilities	22,403	21,983
Billings in excess of cost and estimated earnings	18,723	28,744
Income taxes payable	631	810
Total current liabilities	182,017	179,723
Long-term debt and capital lease liabilities, less current portions and net of deferred financing fees	113,596	100,490
Federal ESPC liabilities	108,039	122,040
Deferred income taxes	2,417	4,010
Deferred grant income	7,877	8,291
Other liabilities	21,127	18,854
Commitments and contingencies
Redeemable non-controlling interest	6,797	490
Stockholders’ equity:
Preferred stock, $0.0001 par value, 5,000,000 shares authorized, no shares issued and outstanding at September 30, 2016 and December 31, 2015	0	0
Additional paid-in capital	112,366	110,311
Retained earnings	193,217	184,454
Accumulated other comprehensive loss, net	(8,913)	(5,228)
Less - treasury stock, at cost, 920,944 shares at September 30, 2016	(4,451)	0
Total equity	292,224	289,542
Total liabilities, redeemable non-controlling interest and equity	734,094	723,440
Common Class A
Stockholders’ equity:
Common Stock	3	3
Common Class B
Stockholders’ equity:
Common Stock	$ 2	$ 2

XML

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2016	Dec. 31, 2015
Preferred stock, par value (in usd per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common Class A
Common stock, par value (in usd per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	28,980,284	28,684,392
Common stock, shares outstanding (in shares)	28,059,340	28,684,392
Treasury stock, shares (in shares)	417,698	0
Common Class B
Common stock, par value (in usd per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	144,000,000	144,000,000
Common stock, shares issued (in shares)	18,000,000	18,000,000
Common stock, shares outstanding (in shares)	18,000,000	18,000,000

XML

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Revenues	$ 180,598	$ 189,142	$ 477,002	$ 457,064
Cost of revenues	141,803	152,849	378,675	370,232
Gross profit	38,795	36,293	98,327	86,832
Selling, general and administrative expenses	28,852	26,623	81,880	76,506
Operating income	9,943	9,670	16,447	10,326
Other expenses, net	2,268	2,149	4,961	6,158
Income before provision for income taxes	7,675	7,521	11,486	4,168
Income tax provision	1,865	3,343	2,872	2,187
Net income	5,810	4,178	8,614	1,981
Net loss (income) attributable to redeemable non-controlling interest	(95)	0	149	0
Net income attributable to Ameresco, Inc.	$ 5,715	$ 4,178	$ 8,763	$ 1,981
Net income per share attributable to common shareholders:
Basic (in usd per share)	$ 0.12	$ 0.09	$ 0.19	$ 0.04
Diluted (in usd per share)	$ 0.12	$ 0.09	$ 0.19	$ 0.04
Weighted average common shares outstanding:
Basic (in shares)	46,360,575	46,517,638	46,606,494	46,473,375
Diluted (in shares)	46,430,163	48,056,359	46,669,036	47,623,042

XML

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 5,810	$ 4,178	$ 8,614	$ 1,981
Other comprehensive loss:
Unrealized gain (loss) from interest rate hedge, net of tax	398	(1,429)	(2,227)	(1,043)
Foreign currency translation adjustments	(99)	(1,222)	(1,458)	(1,983)
Total other comprehensive income (loss)	299	(2,651)	(3,685)	(3,026)
Comprehensive income (loss)	6,109	1,527	4,929	(1,045)
Comprehensive income (loss) attributable to redeemable non-controlling interest	(95)	0	149	0
Comprehensive income (loss) attributable to Ameresco, Inc.	$ 6,014	$ 1,527	$ 5,078	$ (1,045)

XML

Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Unrealized (loss) gain from interest rate hedge, tax	$ (100)	$ 706	$ 1,256	$ 629

XML

Consolidated Statement of Changes in Redeemable Non-Controlling Interest and Stockholders' Equity - 9 months ended Sep. 30, 2016 - USD ($) $ in Thousands	Total	Common Class A	Common Class B	Common Stock Common Class A	Common Stock Common Class B	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Redeemable non-controlling interest, Balance, December 31, 2015 at Dec. 31, 2015	$ 490
Increase (Decrease) in Temporary Equity [Roll Forward]
Contributions from redeemable non-controlling interest, net	6,456
Net (loss) income	(149)
Redeemable non-controlling interest, Balance, September 30, 2016 at Sep. 30, 2016	6,797
Balance at beginning of period at Dec. 31, 2015	289,542			$ 3	$ 2	$ 110,311	$ 184,454	$ (5,228)	$ 0
Balance at beginning of period (in shares) at Dec. 31, 2015		28,684,392	18,000,000	28,684,392	18,000,000
Treasury stock, shares (in shares) at beginning of period at Dec. 31, 2015		0							0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options	969					969			$ 0
Exercise of stock options (in shares)				295,892
Stock-based compensation expense	1,086					1,086			0
Open market purchase of common shares	(4,451)								$ (4,451)
Open market purchase of common shares (in shares)				920,944					920,944
Unrealized loss from interest rate hedge, net	(2,227)							(2,227)
Foreign currency translation adjustments	(1,458)							(1,458)	$ 0
Net (loss) income	8,763						8,763
Balance at end of period at Sep. 30, 2016	$ 292,224			$ 3	$ 2	$ 112,366	$ 193,217	$ (8,913)	$ (4,451)
Balance at end of period (in shares) at Sep. 30, 2016		28,059,340	18,000,000	28,059,340	18,000,000
Treasury stock, shares (in shares) at end of period at Sep. 30, 2016		417,698							920,944

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net income	$ 8,614	$ 1,981
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation of project assets	14,139	12,115
Depreciation of property and equipment	2,300	2,349
Amortization of deferred financing fees	994	850
Amortization of intangible assets	1,793	3,041
Provision for bad debts	5,137	239
Unrealized gain on interest rate swaps	(227)	(277)
Stock-based compensation expense	1,086	1,367
Deferred income taxes	(344)	(2,920)
Unrealized foreign exchange (gain) loss	(277)	1,324
Changes in operating assets and liabilities:
Restricted cash	(4,592)	(2,216)
Accounts receivable	(7,136)	(5,258)
Accounts receivable retainage	(403)	(1,501)
Federal ESPC receivable	(83,431)	(50,555)
Inventory, net	(165)	(3,347)
Costs and estimated earnings in excess of billings	28,119	(10,792)
Prepaid expenses and other current assets	(3,292)	(4,039)
Project development costs	838	(4,999)
Other assets	(137)	(2,807)
Accounts payable, accrued expenses and other current liabilities	(1,225)	22,396
Billings in excess of cost and estimated earnings	(9,510)	7,329
Other liabilities	(2,005)	(573)
Income taxes payable	2,348	3,674
Cash flows from operating activities	(47,376)	(32,619)
Cash flows from investing activities:
Purchases of property and equipment	(2,696)	(1,040)
Purchases of project assets	(45,205)	(29,932)
Proceeds from sale of assets	0	852
Cash flows from investing activities	(47,901)	(30,120)
Cash flows from financing activities:
Payments of financing fees	(1,266)	(1,894)
Proceeds from exercises of options	969	611
Repurchase of common stock	(4,451)	0
Proceeds (repayments) from senior secured credit facility, net	7,501	(5,000)
Proceeds from long-term debt financing	7,803	4,584
Proceeds from Federal ESPC projects	65,075	61,846
Proceeds from sale-leaseback financing	17,045	7,581
Non-controlling interest	0	(116)
Proceeds from investment by redeemable non-controlling interest, net	6,456	0
Restricted cash	2,952	(74)
Payments on long-term debt	(9,246)	(9,051)
Cash flows from financing activities	92,838	58,487
Effect of exchange rate changes on cash	(849)	1,746
Net decrease in cash and cash equivalents	(3,288)	(2,506)
Cash and cash equivalents, beginning of period	21,645	23,762
Cash and cash equivalents, end of period	18,357	21,256
Supplemental disclosures of cash flow information:
Cash paid for interest	4,956	4,197
Cash paid for income taxes	2,940	1,204
Non-cash Federal ESPC settlement	79,075	26,320
Accrued purchases of project assets	$ 15,869	$ 13,241

XML

Description of Business

9 Months Ended

Sep. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business

DESCRIPTION OF BUSINESS

Ameresco, Inc. (including its subsidiaries, the “Company”) was organized as a Delaware corporation on April 25, 2000. The Company is a provider of energy efficiency solutions for facilities throughout North America. The Company provides solutions, both products and services, that enable customers to reduce their energy consumption, lower their operating and maintenance costs and realize environmental benefits. The Company’s comprehensive set of services includes upgrades to a facility’s energy infrastructure and the construction and operation of small-scale renewable energy plants. It also sells certain photovoltaic (“PV”) equipment worldwide. The Company operates in the United States, Canada and Europe.

The Company is compensated through a variety of methods, including: 1) direct payments based on fee-for-services contracts (utilizing lump-sum or cost-plus pricing methodologies); 2) the sale of energy from the Company’s operating assets; and 3) direct payment for PV equipment and systems.

The condensed consolidated financial statements as of September 30, 2016, and for the three and nine months ended September 30, 2016 and 2015, are unaudited. In addition, certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) have been condensed or omitted. The interim condensed consolidated financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair presentation in conformity with GAAP. The interim condensed consolidated financial statements, and notes thereto, should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2015, and notes thereto, included in the Company’s annual report on Form 10-K for the year ended December 31, 2015 filed with the Securities and Exchange Commission on March 4, 2016. The results of operations for the interim periods should not be considered indicative of results to be expected for the full year.

XML

Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2016

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Certain amounts have been reclassified in the prior year financial statements to conform to the current year presentation.

Principles of Consolidation

The accompanying condensed consolidated financial statements include the accounts of Ameresco, Inc. and its subsidiaries. All significant intercompany accounts and transactions have been eliminated. The Company prepares its financial statements in conformity with GAAP.

Use of Estimates

GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. The most significant estimates and assumptions used in these condensed consolidated financial statements relate to management’s estimates of final construction contract profit in accordance with accounting for long-term contracts, allowance for doubtful accounts, inventory reserves, project development costs, fair value of derivative financial instruments and stock-based awards, impairment of long-lived assets, income taxes, self insurance reserves and any potential liability in conjunction with certain commitments and contingencies. Actual results could differ from those estimates.

The Company is self-insured for employee health insurance. The maximum exposure in fiscal year 2016 under the plan is $100 per covered participant, after which reinsurance takes effect. The liability for unpaid claims and associated expenses, including incurred but not reported claims, is determined by management and reflected in the Company’s consolidated balance sheets in accrued expenses and other current liabilities. The liability is calculated based on historical data, which considers both the frequency and settlement amount of claims. The Company’s estimated accrual for this liability could be different than its ultimate obligation if variables such as the frequency or amount of future claims differ significantly from management’s assumptions.

Cash and Cash Equivalents

Cash and cash equivalents includes cash on deposit, overnight repurchase agreements and amounts invested in highly liquid money market funds. Cash equivalents consist of short term investments with original maturities of three months or less. The Company maintains accounts with financial institutions and the balances in such accounts, at times, exceed federally insured limits. This credit risk is divided among a number of financial institutions that management believes to be of high quality. The carrying amount of cash and cash equivalents approximates their fair value measured using level one inputs per the fair value hierarchy as defined in Note 6.

Restricted Cash

Restricted cash consists of cash and cash equivalents held in an escrow account in association with construction draws for energy savings performance contracts (“ESPCs”), construction of project assets, operations and maintenance (“O&M”) reserve accounts and cash collateralized letters of credit as well as cash required under term loans to be maintained in debt service reserve accounts until all obligations have been indefeasibly paid in full. These accounts are primarily invested in highly liquid money market funds. The carrying amount of the cash and cash equivalents in these accounts approximates their fair value measured using level one inputs per the fair value hierarchy as defined in Note 6. Restricted cash also includes funds held for clients, which represent assets that, based upon the Company’s intent, are restricted for use solely for the purposes of satisfying the obligations to remit funds to third parties, primarily utility service providers, relating to the Company’s enterprise energy management services. As of September 30, 2016 and December 31, 2015, the Company classified the non-current portion of restricted cash of $19,333 and $13,515, respectively, in other assets on its consolidated balance sheets.

Accounts Receivable

Accounts receivable are stated at the amount management expects to collect from outstanding balances. An allowance for doubtful accounts is provided for those accounts receivable considered to be uncollectible based upon historical experience and management’s evaluation of outstanding accounts receivable. Bad debts are written off against the allowance when identified.

Changes in the allowance for doubtful accounts are as follows:

	Nine Months Ended September 30,
	2016		2015
Allowance for doubtful accounts, beginning of period	$	3,729	$	2,851
Charges to costs and expenses	4,057		239
Account write-offs and other	195		(295		)
Allowance for doubtful accounts, end of period	$	7,981	$	2,795

During the nine months ended September 30, 2016, the Company reserved for certain assets related to a customer who declared bankruptcy. Of this amount, $2,394 was recorded as an allowance for doubtful accounts in accounts receivable, net. In addition, the Company recorded a $476 charge to write-off costs and estimated earnings in excess of billings and a $325 charge for project costs incurred during the first quarter of 2016. The Company has an additional exposure of $758 for the remaining receivables. During the nine months ended September 30, 2016, the Company also reserved for certain assets in its Canada segment totaling $1,934 due to collectability concerns as a result of its previously disclosed restructuring efforts. This reserve included $1,655 for doubtful accounts in accounts receivable, net and $279 reserved against accounts receivable retainage, net.

Accounts Receivable Retainage

Accounts receivable retainage represents amounts due from customers, but where payments are withheld contractually until certain construction milestones are met. Amounts retained typically range from 5% to 10% of the total invoice. The Company classifies as a current asset those retainages that are expected to be billed in the next twelve months. During the year ended December 31, 2015, based upon an evaluation by management, the Company recorded a reserve totaling $1,282 against the accounts receivable retainage balance for amounts determined to be potentially uncollectible. For the nine months ended September 30, 2016, the Company recorded an additional reserve of $279 against the remaining accounts receivable retainage, net balance.

Inventory

Inventories, which consist primarily of PV solar panels, batteries and related accessories, are stated at the lower of cost (“first-in, first-out” method) or net realizable value (determined as the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation). Provisions have been made to reduce the carrying value of inventory to the net realizable value.

Prepaid Expenses

Prepaid expenses consist primarily of short-term prepaid expenditures that will amortize within one year.

Federal ESPC Receivable

Federal ESPC receivable represents the amount to be paid by various federal government agencies for work performed and earned by the Company under specific ESPCs. The Company assigns certain of its rights to receive those payments to third-party investors that provide construction and permanent financing for such contracts. The receivable is recognized as revenue as each project is constructed. Upon completion and acceptance of the project by the government, typically within 24 months of construction commencement, the assigned ESPC receivable from the government and corresponding ESPC liability are eliminated from the Company’s condensed consolidated financial statements.

Project Development Costs

The Company capitalizes as project development costs only those costs incurred in connection with the development of energy projects, primarily direct labor, interest costs, outside contractor services, consulting fees, legal fees and travel, if incurred after a point in time where the realization of related revenue becomes probable. Project development costs incurred prior to the probable realization of revenue are expensed as incurred. The Company classifies as a current asset those project development efforts that are expected to proceed to construction activity in the twelve months that follow. The Company periodically reviews these balances and writes off any amounts where the realization of the related revenue is no longer probable.

Property and Equipment

Property and equipment consists primarily of office and computer equipment, and is recorded at cost. Major additions and improvements are capitalized as additions to the property and equipment accounts, while replacements, maintenance and repairs that do not improve or extend the life of the respective assets are expensed as incurred. Depreciation and amortization of property and equipment are computed on a straight-line basis over the following estimated useful lives:

Asset Classification	Estimated Useful Life
Furniture and office equipment	Five years
Computer equipment and software costs	Three to five years
Leasehold improvements	Lesser of term of lease or five years
Automobiles	Five years
Land	Unlimited

Project Assets

Project assets consist of costs of materials, direct labor, interest costs, outside contract services and project development costs incurred in connection with the construction of small-scale renewable energy plants that the Company owns and the implementation of energy savings contracts. These amounts are capitalized and amortized to cost of revenues in the Company’s consolidated statements of income on a straight line basis over the lives of the related assets or the terms of the related contracts.

The Company capitalizes interest costs relating to construction financing during the period of construction. Capitalized interest is included in project assets, net in the Company’s consolidated balance sheets. Capitalized interest is amortized to cost of revenues in the Company’s consolidated statements of income on a straight line basis over the useful life of the associated project asset. There was $289 and $232 in interest capitalized for the three months ended September 30, 2016 and 2015, respectively. There was $616 and $480 in interest capitalized for the nine months ended September 30, 2016 and 2015, respectively.

Routine maintenance costs are expensed in the current year’s consolidated statements of income to the extent that they do not extend the life of the asset. Major maintenance, upgrades and overhauls are required for certain components of the Company’s assets. In these instances, the costs associated with these upgrades are capitalized and are depreciated over the shorter of the remaining life of the asset or the period until the next required major maintenance or overhaul. Gains or losses on disposal of property and equipment are reflected in selling, general and administrative expenses in the consolidated statements of income.

The Company evaluates its long-lived assets for impairment as events or changes in circumstances indicate the carrying value of these assets may not be fully recoverable. Examples of such triggering events applicable to the Company’s assets include a significant decrease in the market price of a long-lived asset or asset group or a current-period operating or cash flow loss combined with a history of operating or cash flow losses or a projection or forecast that demonstrates continuing losses associated with the use of a long-lived asset or asset group.

The Company evaluates recoverability of long-lived assets to be held and used by estimating the undiscounted future cash flows before interest associated with the expected uses and eventual disposition of those assets. When these comparisons indicate that the carrying value of those assets is greater than the undiscounted cash flows, the Company recognizes an impairment loss for the amount that the carrying value exceeds the fair value.

From time to time, the Company applies for and receives cash grant awards from the U.S. Treasury Department (the “Treasury”) under Section 1603 of the American Recovery and Reinvestment Act of 2009 (the “Act”). The Act authorized the Treasury to make payments to eligible persons who place in service qualifying renewable energy projects. The grants are paid in lieu of investment tax credits. All of the cash proceeds from the grants were used and recorded as a reduction in the cost basis of the applicable project assets. If the Company disposes of the property, or the property ceases to qualify as specified energy property, within five years from the date the property is placed in service, then a prorated portion of the Section 1603 payment must be repaid.

The Company did not receive anySection 1603 grants during the nine months ended September 30, 2016orSeptember 30, 2015.

For tax purposes, the Section 1603 payments are not included in federal and certain state taxable income and the basis of the property is reduced by 50% of the payment received. Deferred grant income of $7,877 and $8,291 recorded in the accompanying consolidated balance sheets as of September 30, 2016 and December 31,2015, respectively, represents the benefit of the basis difference to be amortized to income tax expense over the life of the related property.

Deferred Financing Fees

Deferred financing fees relate to the external costs incurred to obtain financing for the Company. Deferred financing fees are amortized over the respective term of the financing using the effective interest method, with the exception of the Company’s revolving credit facility, as discussed in Note 11, for which deferred financing fees are amortized on a straight-line basis over the term of the agreement. Deferred financing fees are presented on the consolidated balance sheets as a reduction to long-term debt and capital lease liabilities.

Goodwill and Intangible Assets

The Company has classified as goodwill the amounts paid in excess of fair value of the net assets (including tax attributes) of companies acquired in purchase transactions. The Company has recorded intangible assets related to customer contracts, customer relationships, non-compete agreements, trade names and technology, each with defined useful lives. The Company assesses the impairment of goodwill and intangible assets that have indefinite lives on an annual basis (December 31^st) and whenever events or changes in circumstances indicate that the carrying value of the asset may not be recoverable. The Company would record an impairment charge if such an assessment were to indicate that the fair value of such assets was less than their carrying values. Judgment is required in determining whether an event has occurred that may impair the value of goodwill or identifiable intangible assets.

Factors that could indicate that an impairment may exist include significant under-performance relative to plan or long-term projections, significant changes in business strategy, significant negative industry or economic trends or a significant decline in the base price of the Company’s publicly traded stock for a sustained period of time. Although the Company believes goodwill and intangible assets are appropriately stated in the accompanying condensed consolidated financial statements, changes in strategy or market conditions could significantly impact these judgments and require an adjustment to the recorded balance.

See Note 3 for additional disclosures.

Other Assets

Other assets consist primarily of notes and contracts receivable due to the Company from various customers and non-current restricted cash. Other assets also include the non-current portion of project development costs, accounts receivable retainages, sale-leaseback deferred loss and deferred contract costs.

Asset Retirement Obligations

The Company recognizes a liability for the fair value of required asset retirement obligations (“AROs”) when such obligations are incurred. The liability is estimated on a number of assumptions requiring management’s judgment, including equipment removal costs, site restoration costs, salvage costs, cost inflation rates and discount rates and is credited to its projected future value over time. The capitalized asset is depreciated using the convention of depreciation of plant assets. Upon satisfaction of the ARO conditions, any difference between the recorded ARO liability and the actual retirement cost incurred is recognized as an operating gain or loss in the consolidated statements of income. As of September 30, 2016 and December 31,2015, the Company had no ARO liabilities recorded.

Federal ESPC Liabilities

Federal ESPC liabilities represent the advances received from third-party investors under agreements to finance certain energy savings performance contract projects with various federal government agencies. Upon completion and acceptance of the project by the government, typically within 24 months of construction commencement, the ESPC receivable from the government and corresponding ESPC liability is eliminated from the Company’s consolidated balance sheet. Until recourse to the Company ceases for the ESPC receivables transferred to the investor, upon final acceptance of the work by the government customer, the Company remains the primary obligor for financing received.

Sale-Leaseback

During the first quarter of 2015, the Company entered into an agreement with an investor which gives the Company the option to sell and contemporaneously lease back solar photovoltaic (“solar-PV”) projects. In September 2016, the Company amended its agreement with the investor whereas the investor has committed up to a maximum combined funding amount of $100,000 through June 30, 2017 on certain projects. During the quarter ended September 30, 2016, the Company sold one solar-PV project and in return received $6,037 under the agreement. During the quarter ended June 30, 2016, the Company sold three solar-PV projects and in return received $7,467 under the agreement. During the quarter ended March 31, 2016, the Company sold two solar-PV projects and in return received $3,541 under the agreement. During the quarter ended March 31, 2015, the Company sold two solar-PV projects and in return received $7,581 under the agreement. During the quarter ended December 31, 2015, the Company sold one solar-PV project and in return received $4,925 under the agreement.

As part of the agreement, the Company is a party to a master lease agreement that provides for the sale of solar-PV projects to a third-party investor and the simultaneous leaseback of the projects, which the Company then operates and maintains, recognizing revenue through the sale of the electricity and solar renewable energy credits generated by these projects. In sale-leaseback arrangements, the Company first determines whether the solar-PV project under the sale-leaseback arrangement is “integral equipment.” A solar-PV project is determined to be integral equipment when the cost to remove the project from its existing location, including the shipping and reinstallation costs of the solar-PV project at the new site, including any diminution in fair value, exceeds 10% of the fair value of the solar-PV project at the time of its original installation. When the leaseback arrangement expires, the Company has the option to purchase the solar-PV project for the then fair market value or, in certain circumstances, renew the lease for an extended term. All solar-PV projects sold to date under the sale-leaseback program have been determined by the Company not to be integral equipment as the cost to remove the project from its existing location would not exceed 10% of its original fair value.

For solar-PV projects that the Company has determined not to be integral equipment, the Company then determines if the leaseback should be classified as a capital lease or an operating lease. All solar-PV projects sold to date under the sale-leaseback program have been determined by the Company to be capital leases. For leasebacks classified as capital leases, the Company initially records a capital lease asset and capital lease obligation in its consolidated balance sheet equal to the lower of the present value of the Company’s future minimum leaseback payments or the fair value of the solar-PV project. For capital leasebacks, the Company defers any gain or loss, representing the excess or shortfall of cash received from the investor compared to the net book value of the asset in the Company’s consolidated balance sheet at the time of the sale. The Company records the long term portion of any deferred gain or loss in other liabilities and other assets, respectively, and the current portion of any deferred gain or loss in accrued expenses and other current liabilities and prepaid expenses and other current assets, respectively, in its consolidated balance sheet and amortizes the deferred amounts over the lease term in cost of revenues in its consolidated statements of income. During the quarter-ended September 30, 2016, the Company recorded $333 of deferred gain related to sale-leasebacks which will be recognized straight-line over the 25 year lease term. During the quarter-ended June 30, 2016, the Company recorded $124 of deferred loss related to sale-leasebacks which will be recognized straight-line over the 20 year lease terms. During the quarter-ended December 31, 2015, the Company recorded $1,421 of deferred loss related to sale-leasebacks which will be recognized straight-line over the 20 year lease terms. During the nine months ended September 30, 2016 and September 30, 2015, the Company recorded $1,040 and $1,029 of deferred gain, respectively. which will be recognized straight-line over the 20 to 25 year lease terms. The Company records the capital leaseback assets in project assets, net in its consolidated balance sheets. The Company records the capital lease liabilities in long-term debt and capital lease liabilities, less current portions and deferred financing fees, net in its consolidated balance sheets. During the quarters ended September 30, 2016 and September 30, 2015, the Company recorded $3,158 and $0 respectively, in capital lease assets and corresponding capital lease liabilities, and during the quarter ended December 31, 2015 the Company recorded $3,299 in capital lease assets and corresponding capital lease liabilities. During the nine months ended September 30, 2016 and September 30, 2015, the Company recorded $8,830 and $3,511 respectively, in capital lease assets and corresponding capital lease liabilities. The capital lease assets will be amortized straight-line over the 20 to 25 year lease terms. Leaseback payments made to the lessor, related to the capital lease liabilities, are allocated between interest expense and a reduction to the sale-leaseback financing obligation. The initial lease term for the solar-PV project sold during the three months ended September 30, 2016 is 25 years with semi-annual leaseback payments due to the investor ranging from $2 to $397 over the lease term. The initial lease terms for the solar-PV projects sold during the nine months ended September 30, 2016 are 20 to 25 years with semi-annual leaseback payments due to the investor ranging from $2 to $397 over the lease term. The initial lease terms for the solar-PV projects sold during the year ended December 31, 2015 are 20 years with semi-annual leaseback payments due to the investor ranging from $7 to $348 over the lease term.

Other Liabilities

Other liabilities consist primarily of deferred revenue related to multi-year operation and maintenance contracts which expire at various dates through 2031. Other liabilities also include the fair value of derivatives and the long term portion of sale-leaseback deferred gains.

See Note 7 for additional disclosures.

Revenue Recognition

The Company derives revenues from energy efficiency and renewable energy products and services. Energy efficiency products and services include the design, engineering, and installation of equipment and other measures to improve the efficiency, and control the operation, of a facility’s energy infrastructure. Renewable energy products and services include the construction of small-scale plants that produce electricity, gas, heat or cooling from renewable sources of energy, the sale of such electricity, gas, heat or cooling from plants that the Company owns, and the sale and installation of solar energy products and systems.

Revenue from the installation or construction of projects is recognized on a percentage-of-completion basis. The percentage-of-completion for each project is determined on an actual cost-to-estimated final cost basis. Maintenance revenue is recognized as related services are performed. In accordance with industry practice, the Company includes in current assets and liabilities the amounts of receivables related to construction projects realizable and payable over a period in excess of one year. The revenue associated with contract change orders is recognized only when the authorization for the change order has been properly executed and the work has been performed.

When the estimate on a contract indicates a loss, or claims against costs incurred reduce the likelihood of recoverability of such costs, the Company records the entire expected loss immediately, regardless of the percentage of completion.

Billings in excess of cost and estimated earnings represents advanced billings on certain construction contracts. Costs and estimated earnings in excess of billings represent certain amounts under customer contracts that were earned and billable but not invoiced.

The Company sells certain products and services in bundled arrangements, where multiple products and/or services are involved. The Company divides bundled arrangements into separate deliverables and revenue is allocated to each deliverable based on the relative selling price. The relative selling price is determined using third-party evidence or management’s best estimate of selling price.

The Company recognizes revenue from the sale and delivery of products, including the output from renewable energy plants, when produced and delivered to the customer, in accordance with specific contract terms, provided that persuasive evidence of an arrangement exists, the Company’s price to the customer is fixed or determinable and collectability is reasonably assured.

The Company recognizes revenues from O&M contracts, consulting services and enterprise energy management services as the related services are performed.

For a limited number of contracts under which the Company receives additional revenue based on a share of energy savings, such additional revenue is recognized as energy savings are generated.

Cost of Revenues

Cost of revenues include the cost of labor, materials, equipment, subcontracting and outside engineering that are required for the development and installation of projects, as well as preconstruction costs, sales incentives, associated travel, inventory obsolescence charges, amortization of intangible assets related to customer contracts and, if applicable, costs of procuring financing. A majority of the Company’s contracts have fixed price terms; however, in some cases the Company negotiates protections, such as a cost-plus structure, to mitigate the risk of rising prices for materials, services and equipment.

Cost of revenues also include the costs of maintaining and operating the small-scale renewable energy plants that the Company owns, including the cost of fuel (if any) and depreciation charges.

Income Taxes

The Company provides for income taxes based on the liability method. The Company provides for deferred income taxes based on the expected future tax consequences of differences between the financial statement basis and the tax basis of assets and liabilities calculated using the enacted tax rates in effect for the year in which the differences are expected to be reflected in the tax return.

The Company accounts for uncertain tax positions using a “more-likely-than-not” threshold for recognizing and resolving uncertain tax positions. The evaluation of uncertain tax positions is based on factors that include, but are not limited to, changes in tax law, the measurement of tax positions taken or expected to be taken in tax returns, the effective settlement of matters subject to audit, new audit activity and changes in facts or circumstances related to a tax position. The Company evaluates uncertain tax positions on a quarterly basis and adjusts the level of the liability to reflect any subsequent changes in the relevant facts surrounding the uncertain positions.

The Company’s liabilities for uncertain tax positions can be relieved only if the contingency becomes legally extinguished through either payment to the taxing authority or the expiration of the statute of limitations, the recognition of the benefits associated with the position meet the “more-likely-than-not” threshold or the liability becomes effectively settled through the examination process.

The Company considers matters to be effectively settled once the taxing authority has completed all of its required or expected examination procedures, including all appeals and administrative reviews; the Company has no plans to appeal or litigate any aspect of the tax position; and the Company believes that it is highly unlikely that the taxing authority would examine or re-examine the related tax position. The Company also accrues for potential interest and penalties, related to unrecognized tax benefits in income tax expense.

In November 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-17, which simplifies the presentation of deferred income taxes. The Company elected to early adopt ASU 2015-17 retrospectively in the fourth quarter of 2015. As a result, the Company has presented all deferred tax assets and liabilities as noncurrent in its consolidated balance sheet as of September 30, 2016 and December 31, 2015, respectively.

See Note 4 for additional information on the Company’s income taxes.

Foreign Currency

The local currency of the Company’s foreign operations is considered the functional currency of such operations. All assets and liabilities of the Company’s foreign operations are translated into U.S. dollars at period-end exchange rates. Income and expense items are translated at average exchange rates prevailing during the period. Translation adjustments are accumulated as a separate component of stockholders’ equity. Foreign currency translation gains and losses are reported in the consolidated statements of comprehensive income (loss). Foreign currency transaction gains and losses are reported in the consolidated statements of income.

Fair Value Measurements

The Company follows the guidance related to fair value measurements for all of its non-financial assets and non-financial liabilities, except for those recognized at fair value in the financial statements at least annually. These assets include goodwill and long-lived assets measured at fair value for impairment assessments, and non-financial assets and liabilities initially measured at fair value in a business combination.

The Company’s financial instruments include cash and cash equivalents, restricted cash, accounts and notes receivable, long-term contract receivables, interest rate swaps, accounts payable, accrued expenses, capital lease assets and liabilities and short-term and long-term borrowings. Because of their short maturity, the carrying amounts of cash and cash equivalents, restricted cash, accounts and notes receivable, accounts payable, accrued expenses and short-term borrowings approximate fair value. The carrying value of long-term variable-rate debt approximates fair value. As of September 30, 2016, the fair value of the Company’s long-term debt exceeds its carrying value by approximately $1,775. Fair value of the Company’s debt is based on quoted market prices or on rates available to the Company for debt with similar terms and maturities, which are level two inputs of the fair value hierarchy, as defined in Note 6.

The Company accounts for its interest rate swaps as derivative financial instruments in accordance with the related guidance. Under this guidance, derivatives are carried on the Company’s consolidated balance sheets at fair value. The fair value of the Company’s interest rate swaps are determined based on observable market data in combination with expected cash flows for each instrument.

See Note 6 for additional information related to fair value measurements.

Stock-Based Compensation Expense

Stock-based compensation expense results from the issuance of shares of restricted common stock and grants of stock options to employees, directors, outside consultants and others. The Company recognizes the costs associated with restricted stock and option grants using the fair value recognition provisions of ASC 718, Compensation - Stock Compensation on a straight-line basis over the vesting period of the awards.

Stock-based compensation expense is recognized based on the grant-date fair value. The Company estimates the fair value of the stock-based awards, including stock options, using the Black-Scholes option-pricing model. Determining the fair value of stock-based awards requires the use of highly subjective assumptions, including the fair value of the common stock underlying the award, the expected term of the award and expected stock price volatility.

The assumptions used in determining the fair value of stock-based awards represent management’s estimates, which involve inherent uncertainties and the application of management judgment. As a result, if factors change, and different assumptions are employed, the stock-based compensation could be materially different in the future. The risk-free interest rates are based on the U.S. Treasury yield curve in effect at the time of grant, with maturities approximating the expected life of the stock options.

The Company has no history of paying dividends. Additionally, as of each of the grant dates, there was no expectation that the Company would pay dividends over the expected life of the options. The expected life of the awards is estimated using historical data and management’s expectations. Because there was no public market for the Company’s common stock prior to the Company’s initial public offering, for certain option grants management lacked company-specific historical and implied volatility information. Therefore, estimates of expected stock volatility were based on that of publicly traded peer companies, and it is expected that the Company will continue to use this methodology until such time as there is adequate historical data regarding the volatility of the Company’s publicly traded stock price.

The Company is required to recognize compensation expense for only the portion of options that are expected to vest. Actual historical forfeiture rate of options is based on employee terminations and the number of shares forfeited. This data and other qualitative factors are considered by the Company in determining the forfeiture rate used in recognizing stock compensation expense. If the actual forfeiture rate varies from historical rates and estimates, additional adjustments to compensation expense may be required in future periods. If there are any modifications or cancellations of the underlying unvested securities or the terms of the stock option, it may be necessary to accelerate, increase or cancel any remaining unamortized stock-based compensation expense.

For the three months ended September 30, 2016 and 2015, the Company recorded stock-based compensation expense of $328 and $396, respectively, in connection with stock-based payment awards. For the nine months ended September 30, 2016 and 2015, the Company recorded stock-based compensation expense of $1,086 and $1,367, respectively, in connection with stock-based payment awards. The compensation expense is allocated between cost of revenues and selling, general and administrative expenses in the accompanying consolidated statements of income based on the salaries and work assignments of the employees holding the options. As of September 30, 2016, there was $3,306 of unrecognized compensation expense related to non-vested stock option awards that is expected to be recognized over a weighted-average period of 2.8 years.

The Company also accounts for equity instruments issued to non-employee directors and consultants at fair value. All transactions in which goods or services are the consideration received for the issuance of equity instruments are accounted for based on the fair value of the consideration received or the fair value of the equity instrument issued, whichever is more reliably measurable. The measurement date of the fair value of the equity instrument issued is the date on which the counterparty’s performance is complete. No awards to individuals who were not either an employee or director of the Company occurred during the nine months ended September 30, 2016 or during the year ended December 31,2015.

Share Repurchase Program

In April 2016, the Company’s Board of Directors authorized the repurchase of up to $10,000 of the Company’s Class A common stock from time to time on the open market in privately negotiated transactions. The timing and amount of any shares repurchased will be determined by the Company's management based on its evaluation of market conditions and other factors. Any repurchased shares will be available for use in connection with its stock plans and for other corporate purposes. The repurchase program will be funded using the Company's working capital and borrowings under its revolving line of credit. The Company accounts for share repurchases using the cost method. Under this method, the cost of the share repurchase is recorded entirely in treasury stock, a contra equity account. During the three months ended September 30, 2016, the Company repurchased 503,246 shares of common stock in the amount of $2,502, including fees. During the nine months ended September 30, 2016, the Company repurchased 920,944 shares of common stock in the amount of $4,451, including fees.

Derivative Financial Instruments

In the normal course of business, the Company utilizes derivatives contracts as part of its risk management strategy to manage exposure to market fluctuations in interest rates. These instruments are subject to various credit and market risks. Controls and monitoring procedures for these instruments have been established and are routinely reevaluated. Credit risk represents the potential loss that may occur because a party to a transaction fails to perform according to the terms of the contract. The measure of credit exposure is the replacement cost of contracts with a positive fair value. The Company seeks to manage credit risk by entering into financial instrument transactions only through counterparties that the Company believes to be creditworthy.

Market risk represents the potential loss due to the decrease in the value of a financial instrument caused primarily by changes in interest rates. The Company seeks to manage market risk by establishing and monitoring limits on the types and degree of risk that may be undertaken. As a matter of policy, the Company does not use derivatives for speculative purposes. The Company considers the use of derivatives with all financing transactions to mitigate risk.

The Company recognizes cash flows from derivative instruments as operating activities in the consolidated statements of cash flows. The effective portion of changes in fair value on interest rate swaps designated as cash flow hedges are recognized in the Company’s consolidated statements of comprehensive income (loss). The ineffective portion of changes in fair value on interest rate swaps designated as hedges and changes in fair value on interest rate swaps not designated as hedges are recognized in the Company’s consolidated statements of income.

During 2007, the Company entered into two interest rate swap contracts under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional principal amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swaps cover initial notional amounts of $13,081 and $3,256, each a variable rate note at fixed interest rates of 5.4% and 5.3%, respectively, and expire in March 2024 and February 2021, respectively. These interest rate swaps qualified, but were not designated, as cash flow hedges until April 1, 2010. Since April 2010, they have been designated as hedges.

In March 2010, the Company entered into a fourteen-year interest rate swap contract under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swap covers an initial notional amount of approximately $27,900 variable rate note at a fixed interest rate of 6.99% and expires in December 2024. This swap was designated as a hedge in March 2013. During the second quarter of 2014, this swap was de-designated and re-designated as a hedge as a result of a partial pay down of the associated hedged debt principal.

In July 2011, the Company entered into a five-year interest rate swap contract under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swap covered an initial notional amount of $38,571 variable rate note at a fixed interest rate of 1.965% and expired in June 2016. This interest rate swap had been designated as a hedge since inception.

In October 2012, the Company entered into twoeight-year interest rate swap contracts under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swaps cover an initial notional amount of $16,750 variable rate note at a fixed interest rate of 1.71%. This notional amount increased to $42,247 on September 30, 2013 and expires in March 2020. These interest rate swaps have been designated as hedges since inception.

In October 2012, the Company also entered into twoeight-year forward starting interest rate swap contracts under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swaps cover an initial notional amount of $25,377 variable rate note at a fixed interest rate of 3.70%, with an effective date of March 31, 2020, and expires in June 2028. These interest rate swaps have been designated as hedges since inception.

In September 2015, the Company entered into a seven-year forward starting interest rate swap contract under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swap covers an initial notional amount of $20,746 variable rate note at a fixed interest rate of 2.19%, and expires in February 2023. The effective date of the interest rate swap was February 28, 2016. The underlying cash flows hedged have an initial principal balance of $20,746 with an effective date of March 30, 2016. This interest rate swap has been designated as a hedge since inception.

In September 2015, the Company also entered into a fifteen-year forward starting interest rate swap contract under which the Company agreed to pay an amount equal to a specified fixed rate of interest times a notional amount, and to in turn receive an amount equal to a specified variable rate of interest times the same notional principal amount. The swap covers an initial notional amount of $14,084 variable rate note at a fixed interest rate of 3.26%, with an effective date of February 28, 2023, and expires in December 2038. This interest rate swap has been designated as a hedge since inception.

See Notes 6 and 7 for additional information on the Company’s derivative instruments.

Earnings Per Share

Basic earnings per share is calculated using the Company’s weighted-average outstanding common shares, including vested restricted shares. When the effects are not anti-dilutive, diluted earnings per share is calculated using the weighted-average outstanding common shares; the dilutive effect of convertible preferred stock, under the “if converted” method; and the treasury stock method with regard to warrants and stock options; all as determined under the treasury stock method.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Net income attributable to Ameresco, Inc.	$	5,715	$	4,178	$	8,763	$	1,981
Basic weighted-average shares outstanding	46,360,575		46,517,638		46,606,494		46,473,375
Effect of dilutive securities:
Stock options	69,588		1,538,721		62,542		1,149,667
Diluted weighted-average shares outstanding	46,430,163		48,056,359		46,669,036		47,623,042

For the three months ended September 30, 2016 and 2015 the total number of shares of common stock related to stock options excluded from the calculation of dilutive shares, as the effect would be anti-dilutive, were 3,437,620 and 2,171,104, respectively. For the nine months ended September 30, 2016 and 2015 the total number of shares of common stock related to stock options excluded from the calculation of dilutive shares, as the effect would be anti-dilutive, were 3,437,620 and 1,704,004. For the nine months ended September 30, 2016 the Company has excluded stock options from the calculation of dilutive shares under the treasury stock method where the sum of the assumed proceeds, including unrecognized compensation and related excess tax benefits, exceeds the difference between the market price and the exercise price.

Variable Interest Entities

Certain contracts are executed jointly through partnership and joint venture arrangements with unrelated third parties. The arrangements are often formed for the single business purpose of executing a specific project and allow the Company to share risks and/or secure specialty skills required for project execution.

        The Company evaluates each partnership and joint venture at inception to determine if it qualifies as a variable interest entity (“VIE”) under ASC 810, Consolidation. A VIE is an entity used for business purposes that either (a) does not have equity investors with voting rights or (b) has equity investors who are not required to provide sufficient financial resources for the entity to support its activities without additional subordinated financial support. Upon the occurrence of certain events outlined in ASC 810, the Company reassesses its initial determination of whether the partnership or joint venture is a VIE.

        The Company also evaluates whether it is the primary beneficiary of each VIE and consolidates the VIE if the Company has both (a) the power to direct the economically significant activities of the entity and (b) the obligation to absorb losses of, or the right to receive benefits from, the entity that could potentially be significant to the VIE. The Company considers the contractual agreements that define the ownership structure, distribution of profits and losses, risks, responsibilities, indebtedness, voting rights and board representation of the respective parties in determining whether it qualifies as the primary beneficiary. The Company also considers all parties that have direct or implicit variable interests when determining whether it is the primary beneficiary. When the Company is determined to be the primary beneficiary, the VIE is consolidated. As required by ASC 810, management's assessment of whether the Company is the primary beneficiary of a VIE is continuously performed.

Redeemable Non-Controlling Interest

In September 2015, the Company formed an investment fund with a third party investor which granted the investor ownership interests in the net assets of certain of the Company’s renewable energy project subsidiaries. The Company entered into this agreement in order to finance the costs of constructing the project assets which are under long-term customer contracts. The Company has determined that it is the primary beneficiary in the operational partnership for accounting purposes. Accordingly, the Company will consolidate the assets and liabilities and operating results of the entities in its consolidated financial statements. The Company will recognize the investors’ share of the net assets of the subsidiary as a redeemable non-controlling interest in its condensed consolidated balance sheets.

The Company has determined that the provisions in the contractual arrangement represent a substantive profit-sharing arrangement. The Company has further determined that the appropriate methodology for attributing income and loss to the redeemable non-controlling interest each period is a balance sheet approach referred to as the hypothetical liquidation at book value (“HLBV”) method. Under the HLBV method, the amounts of income and loss attributed to the redeemable non-controlling interest in the consolidated statements of income reflect changes in the amounts the investor would hypothetically receive at each balance sheet date under the liquidation provisions of the contractual agreement, assuming the net assets of this funding structure were liquidated at recorded amounts. The investors’ non-controlling interest in the results of operations of this funding structure is determined as the difference in the non-controlling interest’s claim under the HLBV method at the start and end of each reporting period, after taking into account any capital transactions, such as contributions or distributions, between the Company’s subsidiary and the investor. The use of the HLBV methodology to allocate income to the redeemable non-controlling interest holder may create volatility in the Company’s consolidated statements of income as the application of HLBV can drive changes in net income available and loss attributable to the redeemable non-controlling interest from quarter to quarter.

The Company classified the non-controlling interest with redemption features that are not solely within the control of the Company outside of permanent equity on its consolidated balance sheets. The redeemable non-controlling interest will be reported using the greater of its carrying value at each reporting date as determined by the HLBV method or the estimated redemption value in each reporting period.

See Note 9 for additional disclosures.

Recent Accounting Pronouncements

In May 2014, FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). The guidance in this ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards. The guidance in this ASU supersedes the revenue recognition requirements in ASC 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the Codification. This ASU also supersedes some cost guidance included in ASC 605-35, Revenue Recognition-Construction-Type and Production-Type Contracts. In addition, the existing requirements for the recognition of a gain or loss on the transfer of nonfinancial assets that are not in a contract with a customer are amended to be consistent with the guidance on recognition and measurement in this ASU. The FASB has approved a one year deferral of this standard, and this pronouncement is now effective for annual reporting periods beginning after December 15, 2017. Entities would be permitted to adopt the standard as early as the original public entity effective date (i.e., annual reporting periods beginning after December 15, 2016 and interim periods therein). Early adoption prior to that date is not permitted. Retrospective application of the amendments in this ASU is required. The new guidance must be adopted using either a full retrospective approach for all periods presented in the period of adoption (with some limited relief provided) or a modified retrospective approach. Early application is not permitted under GAAP. The Company is currently assessing the impact of this ASU on its consolidated financial statements.

In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements — Going Concern (Subtopic 205-40) (“ASU 2014-15”). ASU 2014-15 requires management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles of current U.S. auditing standards. Specifically, the amendments (1) provide a definition of the term “substantial doubt”, (2) require an evaluation every reporting period, including interim periods, (3) provide principles for considering the mitigating effect of management’s plans, (4) require certain disclosures when substantial doubt is alleviated as a result of consideration of management’s plans, (5) require an express statement and other disclosures when substantial doubt is still present, and (6) require an assessment for a period of one year after the date that the financial statements are issued (or available to be issued). ASU 2014-15 is effective for annual reporting periods ending after December 15, 2016 and interim periods thereafter. Early adoption is permitted. The Company does not believe that this pronouncement will have an impact on its consolidated financial statements.

In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis (“ASU 2015-02”). ASU 2015-02 affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. ASU 2015-02 is effective for annual reporting periods beginning after December 15, 2015 and interim periods within those annual reporting periods. The Company adopted this guidance in the first quarter of fiscal 2016. This pronouncement did not change the Company’s previous consolidation conclusions.

In April 2015, the FASB issued ASU 2015-03, Interest — Imputation of Interest (Subtopic 835-03): Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”). ASU 2015-03 requires debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the debt liability rather than as an asset. ASU 2015-03 is effective for annual reporting periods beginning after December 15, 2015, and interim periods within those annual reporting periods. The Company adopted this guidance in the first quarter of fiscal 2016. As such, deferred financing fees are presented on the Consolidated Balance Sheets as a reduction to long-term debt and capital lease liabilities.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The guidance in this ASU supersedes the leasing guidance in Topic 840, Leases. Under the new guidance, lessees are required to recognize lease assets and lease liabilities on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the impact of this pronouncement on its consolidated financial statements.

In March 2016, the FASB issued ASU No. 2016-09, Compensation-Stock Compensation-Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"). The guidance in this ASU involves several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Under ASU 2016-09, income tax benefits and deficiencies are to be recognized as income tax expense or benefit in the statement of operations and the tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. Additionally, under ASU 2016-09, excess tax benefits should be classified along with other income tax cash flows as an operating activity. ASU 2016-09 will be effective for the Company on January 1, 2017, with early adoption permitted. The Company is currently evaluating the impact ASU 2016-09 will have on its consolidated financial statements.

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Goodwill and Intangible Assets

9 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

GOODWILL AND INTANGIBLE ASSETS

The changes in the carrying value of goodwill attributable to each reportable segment are as follows:

	U.S. Regions		U.S. Federal		Canada			Small-Scale Infrastructure		Other			Total
Balance, December 31, 2015	$	24,759	$	3,375	$	3,162		$	—	$	27,789		$	59,085
Currency effects	—		—		175			—		(899		)	(724		)
Balance, September 30, 2016	$	24,759	$	3,375	$	3,337		$	—	$	26,890		$	58,361
Accumulated Goodwill Impairment Balance, December 31, 2015	$	—	$	—	$	(1,016	)	$	—	$	—		$	(1,016	)
Accumulated Goodwill Impairment Balance, September 30, 2016	$	—	$	—	$	(1,016	)	$	—	$	—		$	(1,016	)

Separable intangible assets that are not deemed to have indefinite lives are amortized over their useful lives. The Company annually assesses whether a change in the life over which the Company’s assets are amortized is necessary, or more frequently if events or circumstances warrant. No changes to useful lives were made during the nine months ended September 30, 2016 or for the year ended December 31,2015.

Acquired intangible assets other than goodwill that are subject to amortization include customer contracts, customer relationships, non-compete agreements, technology and trade names. Customer contracts are amortized ratably over the period of the acquired customer contracts ranging in periods from approximately one to five years. All other acquired intangible assets are amortized over periods ranging from approximately four to fifteen years, as defined by the nature of the respective intangible asset.

The gross carrying amount and accumulated amortization of intangible assets are as follows:

	As of September 30,		As of December 31,
	2016		2015
Gross Carrying Amount
Customer contracts	$	7,690	$	7,898
Customer relationships	11,876		12,496
Non-compete agreements	3,240		3,324
Technology	2,728		2,701
Trade names	543		540
	26,077		26,959
Accumulated Amortization
Customer contracts	7,614		7,683
Customer relationships	7,731		6,621
Non-compete agreements	3,169		3,149
Technology	2,435		2,241
Trade names	513		495
	21,462		20,189
Intangible assets, net	$	4,615	$	6,770

Amortization expense related to customer contracts is included in cost of revenues in the consolidated statements of income. Amortization expense related to all other acquired intangible assets is included in selling, general and administrative expenses in the consolidated statements of income. Amortization expense for the three months ended September 30, 2016 and 2015 related to customer contracts was $46 and $230, respectively. Amortization expense for the nine months ended September 30, 2016 and 2015 related to customer contracts was $140 and $689, respectively. Amortization expense for the three months ended September 30, 2016 and 2015 related to all other acquired intangible assets was $536 and $787, respectively. Amortization expense for the nine months ended September 30, 2016 and 2015 related to all other acquired intangible assets was $1,653 and $2,352, respectively.

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Income Taxes

9 Months Ended

Sep. 30, 2016

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

The provision for income taxes was $1,865 and $3,343 for the three months ended September 30, 2016 and 2015, respectively. The provision for income taxes was $2,872 and $2,187 for the nine months ended September 30, 2016 and 2015, respectively. The estimated 2016 effective tax rate was 24.3% for the three months ended September 30, 2016 compared to a 44.4% estimated annual effective tax rate for the three months ended September 30, 2015. The estimated 2016 effective tax rate was 25.0% for the nine months ended September 30, 2016 compared to a 52.5% estimated annual effective tax rate for the nine months ended September 30, 2015.

The principal reason for the difference between the statutory rate and the estimated annual effective rate for 2016 were the effects of the tax deduction under Internal Revenue Code Section 179D and production tax credits to which the Company is entitled from owned plants. The principal reason for the difference between the statutory rate and the estimated annual effective rate for 2015 were the effects of the valuation allowance required for the expected Canada losses as well as the investment tax credits and production tax credits to which the Company is entitled to from owned plants.

The investment tax credits and production tax credits to which the Company may be entitled fluctuate from year to year based on the cost of the renewable energy plants the Company places or expects to place in service and production levels at company owned facilities in that year. In addition, the tax deduction under Internal Revenue Code Section 179D expired as of December 31, 2014 and was retroactively reinstated in December of 2015. The current expiration date for the 179D deduction is December 31, 2016.

A reconciliation of the beginning and ending balances of the total amounts of gross unrecognized tax benefits is as follows:

	Gross Unrecognized Tax Benefits
Balance, December 31, 2015	$	2,200
Additions for prior year tax positions	—
Settlements with tax authorities	(436		)
Reductions of prior year tax positions	—
Balance, September 30, 2016	$	1,764

At September 30, 2016 and December 31,2015, the Company had approximately $1,764 and $2,200, respectively, of total gross unrecognized tax benefits. At September 30, 2016 and December 31,2015, the Company had approximately $400 and $800, respectively, of total gross unrecognized tax benefits (net of the federal benefit on state amounts) representing the amount of unrecognized tax benefits that, if recognized, would favorably affect the effective income tax rate in any future periods.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2016

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

Legal Proceedings

The Company is involved in a variety of claims and other legal proceedings generally incidental to its normal business activities. While the outcome of any of these proceedings cannot be accurately predicted, the Company does not believe the ultimate resolution of any of these existing matters would have a material adverse effect on its financial condition or results of operations.

Solar Tariff Contingency

In October 2012, the U.S. Department of Commerce (“Commerce”) announced its final determination in the anti-dumping (“AD”) and countervailing duty (“CVD”) investigations of imports of solar cells manufactured in the People’s Republic of China (“PRC”), including solar modules containing such cells. Commerce’s final determination confirmed its previously published AD duty of 249.96%, for manufacturers without a separate rate, and increased its CVD from 3.61% to 15.24%; both duties are applied to the value of imports of solar modules containing PRC cells. On November 7, 2012, the International Trade Commission announced its final determination upholding the duties. All shipments from May 25, 2012 until the Company suspended importing solar modules containing PRC cells in July 2012 (“covered shipments”) were subject to the CVD and were covered by a single continuous entry bond. Covered shipments also were subject to AD duty, for each of which the Company was required to post a single entry bond. In August, 2014, U.S. Customs lifted suspension of liquidation of covered shipments. As a result of liquidation, during the third and fourth quarters of 2014, the Company paid CVD on covered shipments at the 3.61% rate. During the fourth quarter of 2014 through the first quarter of 2015, the Company paid AD duties on covered shipments at a 31.18% rate. During the fourth quarter of 2015, the Company received the final bill from U.S. Customs for liquidation of one remaining covered shipment containing PRC cells and the matter was resolved in the first quarter of 2016.

Commitments as a Result of Acquisitions

Related to the Company's acquisition of Energyexcel LLP (“EEX”) in the second quarter of 2014, the former owners of EEX, who are now employees of the Company, may be entitled to receive up to 4,500 British pounds sterling ($5,836 converted as of September 30, 2016) in additional consideration, accounted for as compensation for post-combination services, if the acquired business meets certain financial performance milestones through December 31, 2018. No amounts were accrued as of September 30, 2016 and December 31,2015, respectively.

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Fair Value Measurement

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Fair Value Measurement

FAIR VALUE MEASUREMENT

The Company recognizes its financial assets and liabilities at fair value on a recurring basis (at least annually). Fair value is defined as the price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Three levels of inputs that may be used to measure fair value are as follows:

Level 1:  Inputs are based upon unadjusted quoted prices for identical instruments traded in active markets.

Level 2:  Inputs are based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model based valuation techniques for which all significant assumptions are observable in the market or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3:  Inputs are generally unobservable and typically reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability. The fair values are therefore determined using model-based techniques that include option pricing models, discounted cash flow models, and similar techniques.

The following table presents the input level used to determine the fair values of the Company’s financial instruments measured at fair value on a recurring basis:

		Fair Value as of
		September 30,		December 31,
	Level	2016		2015
Liabilities:
Interest rate swap instruments	2	$	7,937	$	4,681

The fair value of the Company’s interest rate swaps was determined using a cash flow analysis on the expected cash flow of the contract in combination with observable market-based inputs, including interest rate curves and implied volatilities. As part of this valuation, the Company considered the credit ratings of the counterparties to the interest rate swaps to determine if a credit risk adjustment was required.

The fair value of financial instruments is determined by reference to observable market data and other valuation techniques, as appropriate. The only category of financial instruments where the difference between fair value and recorded book value is notable is long-term debt. At September 30, 2016, the fair value of the Company’s long-term debt was estimated using discounted cash flows analysis, based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements which are considered to be level two inputs. There were no transfers in or out of level two for the nine months ended September 30, 2016. Based on the analysis performed, the fair value and the carrying value of the Company’s long-term debt, excluding capital lease liabilities, are as follows:

	As of September 30, 2016				As of December 31, 2015
	Fair Value		Carrying Value		Fair Value		Carrying Value
Long-term debt	$	115,305	$	113,530	$	108,323	$	107,148

The Company is also required periodically to measure certain other assets at fair value on a nonrecurring basis, including long-lived assets, goodwill and other intangible assets. There were no assets recorded at fair value on a non-recurring basis at September 30, 2016.

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Derivative Instruments and Hedging Activities

9 Months Ended

Sep. 30, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

Information about the fair value amounts of the Company’s derivative instruments is as follows:

	Derivatives as of
	September 30, 2016			December 31, 2015
	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives Designated as Hedging Instruments:
Interest rate swap contracts	Other liabilities	$	7,937	Other liabilities	$	4,681

The following table presents information about the effects of the Company’s derivative instruments on the consolidated statements of income and consolidated statements of comprehensive income (loss):

	Location of Gain Recognized in Net Income	Amount of Gain Recognized in Net Income
		Three Months Ended September 30,						Nine Months Ended September 30,
		2016			2015			2016			2015
Derivatives Designated as Hedging Instruments:
Interest rate swap contracts	Other expenses, net	$	(74	)	$	(93	)	$	(227	)	$	(277	)

The following table summarizes the pre-tax amount of unrealized gain or loss recognized in accumulated other comprehensive loss, net (“AOCI”) in the Company’s consolidated balance sheets:

	Nine Months Ended
	September 30, 2016
Derivatives Designated as Hedging Instruments:
Accumulated loss in AOCI at the beginning of the period	$	(2,548	)
Unrealized loss recognized in AOCI	(1,302		)
Loss reclassified from AOCI to other expenses, net	(925		)
Accumulated loss in AOCI at the end of the period	$	(4,775	)

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Investment Fund

9 Months Ended

Sep. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Investment Fund

INVESTMENT FUND

During the third quarter of 2015, the Company formed an investment fund for the purpose of funding the purchase of a solar energy system. The Company consolidates the investment fund, and all inter-company balances and transactions between the Company and the investment fund are eliminated in its consolidated financial statements. The Company determined that the investment fund meets the definition of a VIE. The Company uses a qualitative approach in assessing the consolidation requirement for VIEs that focuses on determining whether the Company has the power to direct the activities of the VIE that most significantly affect the VIE’s economic performance and whether the Company has the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE.

The Company has considered the provisions within the contractual arrangements that grant it power to manage and make decisions that affect the operation of this VIE, including determining the solar energy systems and associated long term customer contracts to be sold or contributed to the VIE, and installation, operation and maintenance of the solar energy systems. The Company considers that the rights granted to the other investors under the contractual arrangements are more protective in nature rather than participating rights. As such, the Company has determined it is the primary beneficiary of the VIE for all periods presented. The Company evaluates its relationships with VIEs on an ongoing basis to ensure that it continues to be the primary beneficiary.

Under the related agreements, cash distributions of income and other receipts by the fund, net of agreed-upon expenses and estimated expenses, tax benefits and detriments of income and loss, and tax benefits of tax credits, are assigned to the fund investor and Company’s subsidiary as specified in contractual arrangements. Certain of these arrangements have call and put options to acquire the investor’s equity interest as specified in the contractual agreement. See Note 9 for additional information on the call and put options.

At September 30, 2016, the Company’s consolidated balance sheet included $949 in cash, $1,554 in restricted cash, $241 in accounts receivable, $293 in costs and estimated earnings in excess of billings, $43 in prepaid expenses and other current assets, $32,535 of project assets, $84 in other assets, and $33 in accrued expenses and other current liabilities related to the investment fund. At December 31,2015, the Company’s consolidated balance sheet included $5,419 in restricted cash, $25 in prepaid expenses and other current assets, $32,657 of project assets, net and $112 in other assets related to the investment fund.

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Non-Controlling Interests

9 Months Ended

Sep. 30, 2016

Noncontrolling Interest [Abstract]

Non-Controlling Interests

NON-CONTROLLING INTERESTS

Redeemable Non-controlling Interest

The Company’s wholly owned subsidiary with a membership interest in the investment fund has the right, beginning on the fifth anniversary of the final funding of the variable rate construction and term loans due 2023 and extending for six months, to elect to require the non-controlling interest holder to sell all of its membership units to the Company’s wholly owned subsidiary (the “Call Option”). The Company’s investment fund, which was formed in the third quarter of 2015, also includes a right, beginning on the sixth anniversary of the final funding and extending for one year, for the non-controlling interest holder to elect to require the Company’s wholly owned subsidiary to purchase all of its membership interests in the fund (the “Put Option”).

Because the Put Option represents a redemption feature that is not solely within the control of the Company, the non-controlling interest in these funds is presented outside of permanent equity. Redeemable non-controlling interests are reported using the greater of their carrying value at each reporting date (which is impacted by attribution under the HLBV method) or their estimated redemption value in each reporting period.

The purchase price for the fund investor’s membership interest under the Call Option is equal to the fair market value as of the exercise date.

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Business Segment Information

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Business Segment Information

BUSINESS SEGMENT INFORMATION

The Company reports results under ASC 280, Segment Reporting. The Company’s reportable segments are U.S. Regions, U.S. Federal, Canada and Small-Scale Infrastructure. The Company’s U.S. Regions, U.S. Federal and Canada segments offer energy efficiency products and services, which include the design, engineering and installation of equipment and other measures to improve the efficiency and control the operation of a facility’s energy infrastructure; renewable energy solutions and services, which include the construction of small-scale plants for customers that produce electricity, gas, heat or cooling from renewable sources of energy; and O&M services. The Company’s Small-Scale Infrastructure segment sells electricity, processed landfill gas, heat or cooling produced from renewable sources of energy from small-scale plants that the Company owns. The “All Other” category offers enterprise energy management services, consulting services and the sale and installation of solar-PV energy products and systems. These segments do not include results of other activities, such as corporate operating expenses not specifically allocated to the segments. During the nine months ended September 30, 2016, the Company also reserved for certain assets in its Canada segment totaling $1,934 due to collectability concerns as a result of its previously disclosed restructuring efforts. During the three and nine months ended September 30, 2016, the Company included in unallocated corporate activity $2,194 and $3,195, respectively, as a reserve for a customer who declared bankruptcy.

The reports of the Company’s chief operating decision maker do not include assets at the operating segment level.

An analysis of the Company’s business segment information and reconciliation to the condensed consolidated financial statements is as follows:

	U.S. Regions		U.S. Federal		Canada			Small-Scale Infrastructure		All Other			Total Consolidated
Three Months Ended September 30, 2016
Revenues	$	83,652	$	46,498	$	12,018		$	21,790	$	16,640		$	180,598
Interest income	—		2		—			10		—			12
Interest expense	—		278		493			1,116		—			1,887
Depreciation and amortization of intangible assets	116		686		288			4,063		649			5,802
Unallocated corporate activity	—		—		—			—		—			(10,478		)
Income (loss) before taxes, excluding unallocated corporate activity	7,918		5,338		(154		)	5,312		(261		)	18,153
Three Months Ended September 30, 2015
Revenues	103,847		35,491		12,931			16,025		20,848			189,142
Interest income	—		—		—			—		—			—
Interest expense	—		—		369			990		—			1,359
Depreciation and amortization of intangible assets	213		299		278			3,691		1,020			5,501
Unallocated corporate activity	—		—		—			—		—			(6,235		)
Income (loss) before taxes, excluding unallocated corporate activity	10,581		4,332		(1,660		)	2,204		(1,701		)	13,756
Nine Months Ended September 30, 2016
Revenues	195,856		128,266		40,023			61,543		51,314			477,002
Interest income	—		7		—			29		—			36
Interest expense	—		666		1,243			3,212		—			5,121
Depreciation and amortization of intangible assets	390		1,913		788			11,663		1,997			16,751
Unallocated corporate activity	—		—		—			—		—			(25,044		)
Income (loss) before taxes, excluding unallocated corporate activity	12,732		16,303		(1,457		)	9,923		(971		)	36,530
Nine Months Ended September 30, 2015
Revenues	221,875		90,071		37,663			45,947		61,508			457,064
Interest income	—		—		3			159		—			162
Interest expense	—		—		980			2,914		—			3,894
Depreciation and amortization of intangible assets	622		907		803			10,571		3,044			15,947
Unallocated corporate activity	—		—		—			—		—			(19,640		)
Income (loss) before taxes, excluding unallocated corporate activity	$	18,656	$	12,632	$	(7,238	)	$	4,553	$	(4,795	)	$	23,808

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Long-Term Debt

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Long-term Debt

LONG-TERM DEBT

Variable-Rate Construction and Term Loans

In September 2015, the Company entered into a credit and guaranty agreement for use in providing non-recourse financing for certain of its solar-PV projects currently under construction. The credit and guaranty agreement provides for a $20,746 construction-to-term loan credit facility and bears interest at a variable rate. The term loan matures on March 30, 2023. On March 30, 2016, the construction loan was converted to a term loan. At December 31,2015, $17,663 was outstanding under the construction loan. At September 30, 2016, $20,572 was outstanding under the term loan. The variable rate for this loan at September 30, 2016 was 3.34%.

In August 2016, the Company entered into a credit and guaranty agreement with two banks for use in providing limited recourse financing for certain of its solar PV projects in operation. The credit and guaranty agreement provides for a $6,358 Canada dollar ($4,837 converted as of September 30, 2016) term loan credit facility and bears interest at a fixed rate of 4.95%. At September 30, 2016, $4,767 was outstanding under the term loan.

Senior Secured Credit Facility - Revolver and Term Loan

On June 30, 2015, the Company entered into a third amended and restated bank credit facility with two banks. The new credit facility replaces and extended the Company’s existing credit facility, which was scheduled to expire in accordance with its terms on June 30, 2016. The revolving credit facility matures on June 30, 2020 and the term loan facility matures on June 30, 2018, when all amounts will be due and payable in full. The Company expects to use the new credit facility for general corporate purposes of the Company and its subsidiaries, including permitted acquisitions, refinancing of existing indebtedness and working capital. In July 2016, the Company entered into an amendment to the third amended and restated bank credit facility. Under this amendment, the requirement of the total funded debt to EBITDA ratio was amended as described below.

The credit facility consists of a $60,000 revolving credit facility and a $17,143 term loan. The amount of the term loan represents the amount outstanding under the Company’s existing term loan at closing. The revolving credit facility may be increased by up to an additional $25,000 at the Company’s option if lenders are willing to provide such increased commitments, subject to certain conditions. Up to $20,000 of the revolving credit facility may be borrowed in Canadian dollars, Euros and Pounds Sterling. The Company is the sole borrower under the credit facility. The obligations under the credit facility are guaranteed by certain of the Company’s direct and indirect wholly owned domestic subsidiaries and are secured by a pledge of all of the Company’s and such subsidiary guarantors’ assets, other than the equity interests of certain subsidiaries and assets held in non-core subsidiaries (as defined in the agreement). At September 30, 2016, there were $18,733 amounts outstanding under the revolving credit facility and $10,000 outstanding under the term loan. At December 31,2015, there was $11,300 outstanding under the revolving credit facility and $14,285 outstanding under the term loan.

The interest rate for borrowings under the credit facility is based on, at the Company’s option, either (1) a base rate equal to a margin of 0.50% or 0.25%, depending on the Company’s ratio of Total Funded Debt to EBITDA (each as defined in the agreement), over the highest of (a) the federal funds effective rate, plus 0.50%, (b) Bank of America’s prime rate and (c) a rate based on the London interbank deposit rate (“LIBOR”) plus 1.50%, or (2) the one-, two- three- or six-month LIBOR plus a margin of 2.00% or 1.75%, depending on the Company’s ratio of Total Funded Debt to EBITDA. A commitment fee of 0.375% is payable quarterly on the undrawn portion of the revolving credit facility. At September 30, 2016, the interest rate for borrowings under the revolving credit facility was 3.75% and interest rate for borrowings under the term loan was 2.59%.

The revolving credit facility does not require amortization of principal. The term loan requires quarterly principal payments of $1,429, with the balance due at maturity. All borrowings may be paid before maturity in whole or in part at the Company’s option without penalty or premium, other than reimbursement of any breakage and deployment costs in the case of LIBOR borrowings.

The credit facility limits the Company’s and its subsidiaries’ ability to, among other things: incur additional indebtedness; incur liens or guarantee obligations; merge, liquidate or dispose of assets; make acquisitions or other investments; enter into hedging agreements; pay dividends and make other distributions and engage in transactions with affiliates, except in the ordinary course of business on an arms’ length basis.

Under the credit facility, the Company and its subsidiaries may not invest cash or property in, or loan to, the Company’s non-core subsidiaries in aggregate amounts exceeding 49% of the Company’s consolidated stockholders’ equity. In addition, under the credit facility, the Company and its core subsidiaries must maintain the following financial covenants:

• a ratio of total funded debt to EBITDA of:

- less than 2.00 to 1.0 as of the end of each fiscal quarter ending on or before June 30, 2016;

- less than 2.75 to 1.0 as of the end of each fiscal quarter ending September 30, 2016, December 31, 2016, March 31, 2017 and June 30, 2017; and

- less than 2.00 to 1.0 as of the end of each fiscal quarter ending September 30, 2017 and thereafter; and

• a debt service coverage ratio (as defined in the agreement) of at least 1.5 to 1.0.

Any failure to comply with the financial or other covenants of the credit facility would not only prevent the Company from being able to borrow additional funds, but would constitute a default, permitting the lenders to, among other things, accelerate the amounts outstanding, including all accrued interest and unpaid fees, under the credit facility, to terminate the credit facility, and enforce liens against the collateral.

The credit facility also includes several other customary events of default, including a change in control of the Company, permitting the lenders to accelerate the indebtedness, terminate the credit facility, and enforce liens against the collateral.

For purposes of the Company’s senior secured facility: EBITDA excludes the results of certain renewable energy projects that the Company owns and for which financing from others remains outstanding; total funded debt includes amounts outstanding under both the term loan and revolver portions of the senior secured credit facility plus other indebtedness, but excludes non-recourse indebtedness of project company subsidiaries; and debt service includes principal and interest payments on the indebtedness included in total funded debt other than principal payments on the revolver portion of the facility.

At September 30, 2016, the Company was in compliance with all financial and operational covenants.

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Subsequent Events

9 Months Ended

Sep. 30, 2016

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

In October 2016, the Company entered into a non-recourse construction loan agreement with a lender to finance up to 80% of the value of construction costs on certain solar-PV projects in development. The maximum amount that can be drawn on the construction loan is $35,000. No amounts have been borrowed against the construction loan.

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2016

Accounting Policies [Abstract]

Principles of Consolidation

Principles of Consolidation

The accompanying condensed consolidated financial statements include the accounts of Ameresco, Inc. and its subsidiaries. All significant intercompany accounts and transactions have been eliminated. The Company prepares its financial statements in conformity with GAAP.

Use of Estimates

Use of Estimates

GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. The most significant estimates and assumptions used in these condensed consolidated financial statements relate to management’s estimates of final construction contract profit in accordance with accounting for long-term contracts, allowance for doubtful accounts, inventory reserves, project development costs, fair value of derivative financial instruments and stock-based awards, impairment of long-lived assets, income taxes, self insurance reserves and any potential liability in conjunction with certain commitments and contingencies. Actual results could differ from those estimates.

The Company is self-insured for employee health insurance. The maximum exposure in fiscal year 2016 under the plan is $100 per covered participant, after which reinsurance takes effect. The liability for unpaid claims and associated expenses, including incurred but not reported claims, is determined by management and reflected in the Company’s consolidated balance sheets in accrued expenses and other current liabilities. The liability is calculated based on historical data, which considers both the frequency and settlement amount of claims. The Company’s estimated accrual for this liability could be different than its ultimate obligation if variables such as the frequency or amount of future claims differ significantly from management’s assumptions.

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and cash equivalents includes cash on deposit, overnight repurchase agreements and amounts invested in highly liquid money market funds. Cash equivalents consist of short term investments with original maturities of three months or less. The Company maintains accounts with financial institutions and the balances in such accounts, at times, exceed federally insured limits. This credit risk is divided among a number of financial institutions that management believes to be of high quality. The carrying amount of cash and cash equivalents approximates their fair value measured using level one inputs per the fair value hierarchy as defined in Note 6.

Restricted Cash

Restricted Cash

Restricted cash consists of cash and cash equivalents held in an escrow account in association with construction draws for energy savings performance contracts (“ESPCs”), construction of project assets, operations and maintenance (“O&M”) reserve accounts and cash collateralized letters of credit as well as cash required under term loans to be maintained in debt service reserve accounts until all obligations have been indefeasibly paid in full. These accounts are primarily invested in highly liquid money market funds. The carrying amount of the cash and cash equivalents in these accounts approximates their fair value measured using level one inputs per the fair value hierarchy as defined in Note 6. Restricted cash also includes funds held for clients, which represent assets that, based upon the Company’s intent, are restricted for use solely for the purposes of satisfying the obligations to remit funds to third parties, primarily utility service providers, relating to the Company’s enterprise energy management services.

Accounts Receivable

Accounts Receivable

Accounts receivable are stated at the amount management expects to collect from outstanding balances. An allowance for doubtful accounts is provided for those accounts receivable considered to be uncollectible based upon historical experience and management’s evaluation of outstanding accounts receivable. Bad debts are written off against the allowance when identified.

Accounts Receivable Retainage

Accounts Receivable Retainage

Accounts receivable retainage represents amounts due from customers, but where payments are withheld contractually until certain construction milestones are met. Amounts retained typically range from 5% to 10% of the total invoice. The Company classifies as a current asset those retainages that are expected to be billed in the next twelve months.

Inventory

Inventory

Inventories, which consist primarily of PV solar panels, batteries and related accessories, are stated at the lower of cost (“first-in, first-out” method) or net realizable value (determined as the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation). Provisions have been made to reduce the carrying value of inventory to the net realizable value.

Prepaid Expenses

Prepaid Expenses

Prepaid expenses consist primarily of short-term prepaid expenditures that will amortize within one year.

Federal ESPC Receivable

Federal ESPC Receivable

Federal ESPC receivable represents the amount to be paid by various federal government agencies for work performed and earned by the Company under specific ESPCs. The Company assigns certain of its rights to receive those payments to third-party investors that provide construction and permanent financing for such contracts. The receivable is recognized as revenue as each project is constructed. Upon completion and acceptance of the project by the government, typically within 24 months of construction commencement, the assigned ESPC receivable from the government and corresponding ESPC liability are eliminated from the Company’s condensed consolidated financial statements.

Project Development Costs

Project Development Costs

The Company capitalizes as project development costs only those costs incurred in connection with the development of energy projects, primarily direct labor, interest costs, outside contractor services, consulting fees, legal fees and travel, if incurred after a point in time where the realization of related revenue becomes probable. Project development costs incurred prior to the probable realization of revenue are expensed as incurred. The Company classifies as a current asset those project development efforts that are expected to proceed to construction activity in the twelve months that follow. The Company periodically reviews these balances and writes off any amounts where the realization of the related revenue is no longer probable.

Property and Equipment

Property and Equipment

Property and equipment consists primarily of office and computer equipment, and is recorded at cost. Major additions and improvements are capitalized as additions to the property and equipment accounts, while replacements, maintenance and repairs that do not improve or extend the life of the respective assets are expensed as incurred. Depreciation and amortization of property and equipment are computed on a straight-line basis over the following estimated useful lives:

Asset Classification	Estimated Useful Life
Furniture and office equipment	Five years
Computer equipment and software costs	Three to five years
Leasehold improvements	Lesser of term of lease or five years
Automobiles	Five years
Land	Unlimited

Project Assets

Project Assets

Project assets consist of costs of materials, direct labor, interest costs, outside contract services and project development costs incurred in connection with the construction of small-scale renewable energy plants that the Company owns and the implementation of energy savings contracts. These amounts are capitalized and amortized to cost of revenues in the Company’s consolidated statements of income on a straight line basis over the lives of the related assets or the terms of the related contracts.

The Company capitalizes interest costs relating to construction financing during the period of construction. Capitalized interest is included in project assets, net in the Company’s consolidated balance sheets. Capitalized interest is amortized to cost of revenues in the Company’s consolidated statements of income on a straight line basis over the useful life of the associated project asset. There was $289 and $232 in interest capitalized for the three months ended September 30, 2016 and 2015, respectively. There was $616 and $480 in interest capitalized for the nine months ended September 30, 2016 and 2015, respectively.

Routine maintenance costs are expensed in the current year’s consolidated statements of income to the extent that they do not extend the life of the asset. Major maintenance, upgrades and overhauls are required for certain components of the Company’s assets. In these instances, the costs associated with these upgrades are capitalized and are depreciated over the shorter of the remaining life of the asset or the period until the next required major maintenance or overhaul. Gains or losses on disposal of property and equipment are reflected in selling, general and administrative expenses in the consolidated statements of income.

The Company evaluates its long-lived assets for impairment as events or changes in circumstances indicate the carrying value of these assets may not be fully recoverable. Examples of such triggering events applicable to the Company’s assets include a significant decrease in the market price of a long-lived asset or asset group or a current-period operating or cash flow loss combined with a history of operating or cash flow losses or a projection or forecast that demonstrates continuing losses associated with the use of a long-lived asset or asset group.

The Company evaluates recoverability of long-lived assets to be held and used by estimating the undiscounted future cash flows before interest associated with the expected uses and eventual disposition of those assets. When these comparisons indicate that the carrying value of those assets is greater than the undiscounted cash flows, the Company recognizes an impairment loss for the amount that the carrying value exceeds the fair value.

From time to time, the Company applies for and receives cash grant awards from the U.S. Treasury Department (the “Treasury”) under Section 1603 of the American Recovery and Reinvestment Act of 2009 (the “Act”). The Act authorized the Treasury to make payments to eligible persons who place in service qualifying renewable energy projects. The grants are paid in lieu of investment tax credits. All of the cash proceeds from the grants were used and recorded as a reduction in the cost basis of the applicable project assets. If the Company disposes of the property, or the property ceases to qualify as specified energy property, within five years from the date the property is placed in service, then a prorated portion of the Section 1603 payment must be repaid.

The Company did not receive anySection 1603 grants during the nine months ended September 30, 2016orSeptember 30, 2015.

For tax purposes, the Section 1603 payments are not included in federal and certain state taxable income and the basis of the property is reduced by 50% of the payment received.

Deferred Financing Fees

Deferred Financing Fees

Deferred financing fees relate to the external costs incurred to obtain financing for the Company. Deferred financing fees are amortized over the respective term of the financing using the effective interest method, with the exception of the Company’s revolving credit facility, as discussed in Note 11, for which deferred financing fees are amortized on a straight-line basis over the term of the agreement. Deferred financing fees are presented on the consolidated balance sheets as a reduction to long-term debt and capital lease liabilities.

Goodwill and Intangible Assets

Goodwill and Intangible Assets

The Company has classified as goodwill the amounts paid in excess of fair value of the net assets (including tax attributes) of companies acquired in purchase transactions. The Company has recorded intangible assets related to customer contracts, customer relationships, non-compete agreements, trade names and technology, each with defined useful lives. The Company assesses the impairment of goodwill and intangible assets that have indefinite lives on an annual basis (December 31^st) and whenever events or changes in circumstances indicate that the carrying value of the asset may not be recoverable. The Company would record an impairment charge if such an assessment were to indicate that the fair value of such assets was less than their carrying values. Judgment is required in determining whether an event has occurred that may impair the value of goodwill or identifiable intangible assets.

Factors that could indicate that an impairment may exist include significant under-performance relative to plan or long-term projections, significant changes in business strategy, significant negative industry or economic trends or a significant decline in the base price of the Company’s publicly traded stock for a sustained period of time. Although the Company believes goodwill and intangible assets are appropriately stated in the accompanying condensed consolidated financial statements, changes in strategy or market conditions could significantly impact these judgments and require an adjustment to the recorded balance.

Other Assets

Other Assets

Other assets consist primarily of notes and contracts receivable due to the Company from various customers and non-current restricted cash. Other assets also include the non-current portion of project development costs, accounts receivable retainages, sale-leaseback deferred loss and deferred contract costs.

Asset Retirement Obligations

Asset Retirement Obligations

The Company recognizes a liability for the fair value of required asset retirement obligations (“AROs”) when such obligations are incurred. The liability is estimated on a number of assumptions requiring management’s judgment, including equipment removal costs, site restoration costs, salvage costs, cost inflation rates and discount rates and is credited to its projected future value over time. The capitalized asset is depreciated using the convention of depreciation of plant assets. Upon satisfaction of the ARO conditions, any difference between the recorded ARO liability and the actual retirement cost incurred is recognized as an operating gain or loss in the consolidated statements of income.

Federal ESPC Liabilities

Federal ESPC Liabilities

Federal ESPC liabilities represent the advances received from third-party investors under agreements to finance certain energy savings performance contract projects with various federal government agencies. Upon completion and acceptance of the project by the government, typically within 24 months of construction commencement, the ESPC receivable from the government and corresponding ESPC liability is eliminated from the Company’s consolidated balance sheet. Until recourse to the Company ceases for the ESPC receivables transferred to the investor, upon final acceptance of the work by the government customer, the Company remains the primary obligor for financing received.

Sale-Leaseback

Sale-Leaseback

During the first quarter of 2015, the Company entered into an agreement with an investor which gives the Company the option to sell and contemporaneously lease back solar photovoltaic (“solar-PV”) projects. In September 2016, the Company amended its agreement with the investor whereas the investor has committed up to a maximum combined funding amount of $100,000 through June 30, 2017 on certain projects. During the quarter ended September 30, 2016, the Company sold one solar-PV project and in return received $6,037 under the agreement. During the quarter ended June 30, 2016, the Company sold three solar-PV projects and in return received $7,467 under the agreement. During the quarter ended March 31, 2016, the Company sold two solar-PV projects and in return received $3,541 under the agreement. During the quarter ended March 31, 2015, the Company sold two solar-PV projects and in return received $7,581 under the agreement. During the quarter ended December 31, 2015, the Company sold one solar-PV project and in return received $4,925 under the agreement.

As part of the agreement, the Company is a party to a master lease agreement that provides for the sale of solar-PV projects to a third-party investor and the simultaneous leaseback of the projects, which the Company then operates and maintains, recognizing revenue through the sale of the electricity and solar renewable energy credits generated by these projects. In sale-leaseback arrangements, the Company first determines whether the solar-PV project under the sale-leaseback arrangement is “integral equipment.” A solar-PV project is determined to be integral equipment when the cost to remove the project from its existing location, including the shipping and reinstallation costs of the solar-PV project at the new site, including any diminution in fair value, exceeds 10% of the fair value of the solar-PV project at the time of its original installation. When the leaseback arrangement expires, the Company has the option to purchase the solar-PV project for the then fair market value or, in certain circumstances, renew the lease for an extended term. All solar-PV projects sold to date under the sale-leaseback program have been determined by the Company not to be integral equipment as the cost to remove the project from its existing location would not exceed 10% of its original fair value.

For solar-PV projects that the Company has determined not to be integral equipment, the Company then determines if the leaseback should be classified as a capital lease or an operating lease. All solar-PV projects sold to date under the sale-leaseback program have been determined by the Company to be capital leases. For leasebacks classified as capital leases, the Company initially records a capital lease asset and capital lease obligation in its consolidated balance sheet equal to the lower of the present value of the Company’s future minimum leaseback payments or the fair value of the solar-PV project. For capital leasebacks, the Company defers any gain or loss, representing the excess or shortfall of cash received from the investor compared to the net book value of the asset in the Company’s consolidated balance sheet at the time of the sale. The Company records the long term portion of any deferred gain or loss in other liabilities and other assets, respectively, and the current portion of any deferred gain or loss in accrued expenses and other current liabilities and prepaid expenses and other current assets, respectively, in its consolidated balance sheet and amortizes the deferred amounts over the lease term in cost of revenues in its consolidated statements of income.

Other Liabilities

Other Liabilities

Other liabilities consist primarily of deferred revenue related to multi-year operation and maintenance contracts which expire at various dates through 2031. Other liabilities also include the fair value of derivatives and the long term portion of sale-leaseback deferred gains.

See Note 7 for additional disclosures.

Revenue Recognition

Revenue Recognition

The Company derives revenues from energy efficiency and renewable energy products and services. Energy efficiency products and services include the design, engineering, and installation of equipment and other measures to improve the efficiency, and control the operation, of a facility’s energy infrastructure. Renewable energy products and services include the construction of small-scale plants that produce electricity, gas, heat or cooling from renewable sources of energy, the sale of such electricity, gas, heat or cooling from plants that the Company owns, and the sale and installation of solar energy products and systems.

Revenue from the installation or construction of projects is recognized on a percentage-of-completion basis. The percentage-of-completion for each project is determined on an actual cost-to-estimated final cost basis. Maintenance revenue is recognized as related services are performed. In accordance with industry practice, the Company includes in current assets and liabilities the amounts of receivables related to construction projects realizable and payable over a period in excess of one year. The revenue associated with contract change orders is recognized only when the authorization for the change order has been properly executed and the work has been performed.

When the estimate on a contract indicates a loss, or claims against costs incurred reduce the likelihood of recoverability of such costs, the Company records the entire expected loss immediately, regardless of the percentage of completion.

Billings in excess of cost and estimated earnings represents advanced billings on certain construction contracts. Costs and estimated earnings in excess of billings represent certain amounts under customer contracts that were earned and billable but not invoiced.

The Company sells certain products and services in bundled arrangements, where multiple products and/or services are involved. The Company divides bundled arrangements into separate deliverables and revenue is allocated to each deliverable based on the relative selling price. The relative selling price is determined using third-party evidence or management’s best estimate of selling price.

The Company recognizes revenue from the sale and delivery of products, including the output from renewable energy plants, when produced and delivered to the customer, in accordance with specific contract terms, provided that persuasive evidence of an arrangement exists, the Company’s price to the customer is fixed or determinable and collectability is reasonably assured.

The Company recognizes revenues from O&M contracts, consulting services and enterprise energy management services as the related services are performed.

For a limited number of contracts under which the Company receives additional revenue based on a share of energy savings, such additional revenue is recognized as energy savings are generated.

Cost of Revenues

Cost of Revenues

Cost of revenues include the cost of labor, materials, equipment, subcontracting and outside engineering that are required for the development and installation of projects, as well as preconstruction costs, sales incentives, associated travel, inventory obsolescence charges, amortization of intangible assets related to customer contracts and, if applicable, costs of procuring financing. A majority of the Company’s contracts have fixed price terms; however, in some cases the Company negotiates protections, such as a cost-plus structure, to mitigate the risk of rising prices for materials, services and equipment.

Cost of revenues also include the costs of maintaining and operating the small-scale renewable energy plants that the Company owns, including the cost of fuel (if any) and depreciation charges.

Income Taxes

Income Taxes

The Company provides for income taxes based on the liability method. The Company provides for deferred income taxes based on the expected future tax consequences of differences between the financial statement basis and the tax basis of assets and liabilities calculated using the enacted tax rates in effect for the year in which the differences are expected to be reflected in the tax return.

The Company accounts for uncertain tax positions using a “more-likely-than-not” threshold for recognizing and resolving uncertain tax positions. The evaluation of uncertain tax positions is based on factors that include, but are not limited to, changes in tax law, the measurement of tax positions taken or expected to be taken in tax returns, the effective settlement of matters subject to audit, new audit activity and changes in facts or circumstances related to a tax position. The Company evaluates uncertain tax positions on a quarterly basis and adjusts the level of the liability to reflect any subsequent changes in the relevant facts surrounding the uncertain positions.

The Company’s liabilities for uncertain tax positions can be relieved only if the contingency becomes legally extinguished through either payment to the taxing authority or the expiration of the statute of limitations, the recognition of the benefits associated with the position meet the “more-likely-than-not” threshold or the liability becomes effectively settled through the examination process.

The Company considers matters to be effectively settled once the taxing authority has completed all of its required or expected examination procedures, including all appeals and administrative reviews; the Company has no plans to appeal or litigate any aspect of the tax position; and the Company believes that it is highly unlikely that the taxing authority would examine or re-examine the related tax position. The Company also accrues for potential interest and penalties, related to unrecognized tax benefits in income tax expense.

In November 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-17, which simplifies the presentation of deferred income taxes. The Company elected to early adopt ASU 2015-17 retrospectively in the fourth quarter of 2015. As a result, the Company has presented all deferred tax assets and liabilities as noncurrent in its consolidated balance sheet as of September 30, 2016 and December 31, 2015, respectively.

See Note 4 for additional information on the Company’s income taxes.

Foreign Currency

Foreign Currency

The local currency of the Company’s foreign operations is considered the functional currency of such operations. All assets and liabilities of the Company’s foreign operations are translated into U.S. dollars at period-end exchange rates. Income and expense items are translated at average exchange rates prevailing during the period. Translation adjustments are accumulated as a separate component of stockholders’ equity. Foreign currency translation gains and losses are reported in the consolidated statements of comprehensive income (loss). Foreign currency transaction gains and losses are reported in the consolidated statements of income.

Fair Value Measurements

Fair Value Measurements

The Company follows the guidance related to fair value measurements for all of its non-financial assets and non-financial liabilities, except for those recognized at fair value in the financial statements at least annually. These assets include goodwill and long-lived assets measured at fair value for impairment assessments, and non-financial assets and liabilities initially measured at fair value in a business combination.

The Company’s financial instruments include cash and cash equivalents, restricted cash, accounts and notes receivable, long-term contract receivables, interest rate swaps, accounts payable, accrued expenses, capital lease assets and liabilities and short-term and long-term borrowings. Because of their short maturity, the carrying amounts of cash and cash equivalents, restricted cash, accounts and notes receivable, accounts payable, accrued expenses and short-term borrowings approximate fair value. The carrying value of long-term variable-rate debt approximates fair value. As of September 30, 2016, the fair value of the Company’s long-term debt exceeds its carrying value by approximately $1,775. Fair value of the Company’s debt is based on quoted market prices or on rates available to the Company for debt with similar terms and maturities, which are level two inputs of the fair value hierarchy, as defined in Note 6.

The Company accounts for its interest rate swaps as derivative financial instruments in accordance with the related guidance. Under this guidance, derivatives are carried on the Company’s consolidated balance sheets at fair value. The fair value of the Company’s interest rate swaps are determined based on observable market data in combination with expected cash flows for each instrument.

See Note 6 for additional information related to fair value measurements.

Stock-Based Compensation Expense

Stock-Based Compensation Expense

Stock-based compensation expense results from the issuance of shares of restricted common stock and grants of stock options to employees, directors, outside consultants and others. The Company recognizes the costs associated with restricted stock and option grants using the fair value recognition provisions of ASC 718, Compensation - Stock Compensation on a straight-line basis over the vesting period of the awards.

Stock-based compensation expense is recognized based on the grant-date fair value. The Company estimates the fair value of the stock-based awards, including stock options, using the Black-Scholes option-pricing model. Determining the fair value of stock-based awards requires the use of highly subjective assumptions, including the fair value of the common stock underlying the award, the expected term of the award and expected stock price volatility.

The assumptions used in determining the fair value of stock-based awards represent management’s estimates, which involve inherent uncertainties and the application of management judgment. As a result, if factors change, and different assumptions are employed, the stock-based compensation could be materially different in the future. The risk-free interest rates are based on the U.S. Treasury yield curve in effect at the time of grant, with maturities approximating the expected life of the stock options.

The Company has no history of paying dividends. Additionally, as of each of the grant dates, there was no expectation that the Company would pay dividends over the expected life of the options. The expected life of the awards is estimated using historical data and management’s expectations. Because there was no public market for the Company’s common stock prior to the Company’s initial public offering, for certain option grants management lacked company-specific historical and implied volatility information. Therefore, estimates of expected stock volatility were based on that of publicly traded peer companies, and it is expected that the Company will continue to use this methodology until such time as there is adequate historical data regarding the volatility of the Company’s publicly traded stock price.

The Company is required to recognize compensation expense for only the portion of options that are expected to vest. Actual historical forfeiture rate of options is based on employee terminations and the number of shares forfeited. This data and other qualitative factors are considered by the Company in determining the forfeiture rate used in recognizing stock compensation expense. If the actual forfeiture rate varies from historical rates and estimates, additional adjustments to compensation expense may be required in future periods. If there are any modifications or cancellations of the underlying unvested securities or the terms of the stock option, it may be necessary to accelerate, increase or cancel any remaining unamortized stock-based compensation expense.

For the three months ended September 30, 2016 and 2015, the Company recorded stock-based compensation expense of $328 and $396, respectively, in connection with stock-based payment awards. For the nine months ended September 30, 2016 and 2015, the Company recorded stock-based compensation expense of $1,086 and $1,367, respectively, in connection with stock-based payment awards. The compensation expense is allocated between cost of revenues and selling, general and administrative expenses in the accompanying consolidated statements of income based on the salaries and work assignments of the employees holding the options. As of September 30, 2016, there was $3,306 of unrecognized compensation expense related to non-vested stock option awards that is expected to be recognized over a weighted-average period of 2.8 years.

The Company also accounts for equity instruments issued to non-employee directors and consultants at fair value. All transactions in which goods or services are the consideration received for the issuance of equity instruments are accounted for based on the fair value of the consideration received or the fair value of the equity instrument issued, whichever is more reliably measurable. The measurement date of the fair value of the equity instrument issued is the date on which the counterparty’s performance is complete.

Derivative Financial Instruments

Derivative Financial Instruments

In the normal course of business, the Company utilizes derivatives contracts as part of its risk management strategy to manage exposure to market fluctuations in interest rates. These instruments are subject to various credit and market risks. Controls and monitoring procedures for these instruments have been established and are routinely reevaluated. Credit risk represents the potential loss that may occur because a party to a transaction fails to perform according to the terms of the contract. The measure of credit exposure is the replacement cost of contracts with a positive fair value. The Company seeks to manage credit risk by entering into financial instrument transactions only through counterparties that the Company believes to be creditworthy.

Market risk represents the potential loss due to the decrease in the value of a financial instrument caused primarily by changes in interest rates. The Company seeks to manage market risk by establishing and monitoring limits on the types and degree of risk that may be undertaken. As a matter of policy, the Company does not use derivatives for speculative purposes. The Company considers the use of derivatives with all financing transactions to mitigate risk.

The Company recognizes cash flows from derivative instruments as operating activities in the consolidated statements of cash flows. The effective portion of changes in fair value on interest rate swaps designated as cash flow hedges are recognized in the Company’s consolidated statements of comprehensive income (loss). The ineffective portion of changes in fair value on interest rate swaps designated as hedges and changes in fair value on interest rate swaps not designated as hedges are recognized in the Company’s consolidated statements of income.

Earnings Per Share

Earnings Per Share

Basic earnings per share is calculated using the Company’s weighted-average outstanding common shares, including vested restricted shares. When the effects are not anti-dilutive, diluted earnings per share is calculated using the weighted-average outstanding common shares; the dilutive effect of convertible preferred stock, under the “if converted” method; and the treasury stock method with regard to warrants and stock options; all as determined under the treasury stock method.

Variable Interest Entities

Variable Interest Entities

Certain contracts are executed jointly through partnership and joint venture arrangements with unrelated third parties. The arrangements are often formed for the single business purpose of executing a specific project and allow the Company to share risks and/or secure specialty skills required for project execution.

        The Company evaluates each partnership and joint venture at inception to determine if it qualifies as a variable interest entity (“VIE”) under ASC 810, Consolidation. A VIE is an entity used for business purposes that either (a) does not have equity investors with voting rights or (b) has equity investors who are not required to provide sufficient financial resources for the entity to support its activities without additional subordinated financial support. Upon the occurrence of certain events outlined in ASC 810, the Company reassesses its initial determination of whether the partnership or joint venture is a VIE.

        The Company also evaluates whether it is the primary beneficiary of each VIE and consolidates the VIE if the Company has both (a) the power to direct the economically significant activities of the entity and (b) the obligation to absorb losses of, or the right to receive benefits from, the entity that could potentially be significant to the VIE. The Company considers the contractual agreements that define the ownership structure, distribution of profits and losses, risks, responsibilities, indebtedness, voting rights and board representation of the respective parties in determining whether it qualifies as the primary beneficiary. The Company also considers all parties that have direct or implicit variable interests when determining whether it is the primary beneficiary. When the Company is determined to be the primary beneficiary, the VIE is consolidated. As required by ASC 810, management's assessment of whether the Company is the primary beneficiary of a VIE is continuously performed.

Redeemable Non-Controlling Interest

Redeemable Non-Controlling Interest

In September 2015, the Company formed an investment fund with a third party investor which granted the investor ownership interests in the net assets of certain of the Company’s renewable energy project subsidiaries. The Company entered into this agreement in order to finance the costs of constructing the project assets which are under long-term customer contracts. The Company has determined that it is the primary beneficiary in the operational partnership for accounting purposes. Accordingly, the Company will consolidate the assets and liabilities and operating results of the entities in its consolidated financial statements. The Company will recognize the investors’ share of the net assets of the subsidiary as a redeemable non-controlling interest in its condensed consolidated balance sheets.

The Company has determined that the provisions in the contractual arrangement represent a substantive profit-sharing arrangement. The Company has further determined that the appropriate methodology for attributing income and loss to the redeemable non-controlling interest each period is a balance sheet approach referred to as the hypothetical liquidation at book value (“HLBV”) method. Under the HLBV method, the amounts of income and loss attributed to the redeemable non-controlling interest in the consolidated statements of income reflect changes in the amounts the investor would hypothetically receive at each balance sheet date under the liquidation provisions of the contractual agreement, assuming the net assets of this funding structure were liquidated at recorded amounts. The investors’ non-controlling interest in the results of operations of this funding structure is determined as the difference in the non-controlling interest’s claim under the HLBV method at the start and end of each reporting period, after taking into account any capital transactions, such as contributions or distributions, between the Company’s subsidiary and the investor. The use of the HLBV methodology to allocate income to the redeemable non-controlling interest holder may create volatility in the Company’s consolidated statements of income as the application of HLBV can drive changes in net income available and loss attributable to the redeemable non-controlling interest from quarter to quarter.

The Company classified the non-controlling interest with redemption features that are not solely within the control of the Company outside of permanent equity on its consolidated balance sheets. The redeemable non-controlling interest will be reported using the greater of its carrying value at each reporting date as determined by the HLBV method or the estimated redemption value in each reporting period.

See Note 9 for additional disclosures.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In May 2014, FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). The guidance in this ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards. The guidance in this ASU supersedes the revenue recognition requirements in ASC 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the Codification. This ASU also supersedes some cost guidance included in ASC 605-35, Revenue Recognition-Construction-Type and Production-Type Contracts. In addition, the existing requirements for the recognition of a gain or loss on the transfer of nonfinancial assets that are not in a contract with a customer are amended to be consistent with the guidance on recognition and measurement in this ASU. The FASB has approved a one year deferral of this standard, and this pronouncement is now effective for annual reporting periods beginning after December 15, 2017. Entities would be permitted to adopt the standard as early as the original public entity effective date (i.e., annual reporting periods beginning after December 15, 2016 and interim periods therein). Early adoption prior to that date is not permitted. Retrospective application of the amendments in this ASU is required. The new guidance must be adopted using either a full retrospective approach for all periods presented in the period of adoption (with some limited relief provided) or a modified retrospective approach. Early application is not permitted under GAAP. The Company is currently assessing the impact of this ASU on its consolidated financial statements.

In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements — Going Concern (Subtopic 205-40) (“ASU 2014-15”). ASU 2014-15 requires management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles of current U.S. auditing standards. Specifically, the amendments (1) provide a definition of the term “substantial doubt”, (2) require an evaluation every reporting period, including interim periods, (3) provide principles for considering the mitigating effect of management’s plans, (4) require certain disclosures when substantial doubt is alleviated as a result of consideration of management’s plans, (5) require an express statement and other disclosures when substantial doubt is still present, and (6) require an assessment for a period of one year after the date that the financial statements are issued (or available to be issued). ASU 2014-15 is effective for annual reporting periods ending after December 15, 2016 and interim periods thereafter. Early adoption is permitted. The Company does not believe that this pronouncement will have an impact on its consolidated financial statements.

In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis (“ASU 2015-02”). ASU 2015-02 affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. ASU 2015-02 is effective for annual reporting periods beginning after December 15, 2015 and interim periods within those annual reporting periods. The Company adopted this guidance in the first quarter of fiscal 2016. This pronouncement did not change the Company’s previous consolidation conclusions.

In April 2015, the FASB issued ASU 2015-03, Interest — Imputation of Interest (Subtopic 835-03): Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”). ASU 2015-03 requires debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the debt liability rather than as an asset. ASU 2015-03 is effective for annual reporting periods beginning after December 15, 2015, and interim periods within those annual reporting periods. The Company adopted this guidance in the first quarter of fiscal 2016. As such, deferred financing fees are presented on the Consolidated Balance Sheets as a reduction to long-term debt and capital lease liabilities.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The guidance in this ASU supersedes the leasing guidance in Topic 840, Leases. Under the new guidance, lessees are required to recognize lease assets and lease liabilities on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the impact of this pronouncement on its consolidated financial statements.

In March 2016, the FASB issued ASU No. 2016-09, Compensation-Stock Compensation-Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"). The guidance in this ASU involves several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Under ASU 2016-09, income tax benefits and deficiencies are to be recognized as income tax expense or benefit in the statement of operations and the tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. Additionally, under ASU 2016-09, excess tax benefits should be classified along with other income tax cash flows as an operating activity. ASU 2016-09 will be effective for the Company on January 1, 2017, with early adoption permitted. The Company is currently evaluating the impact ASU 2016-09 will have on its consolidated financial statements.

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Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2016

Accounting Policies [Abstract]

Changes in Allowance for Doubtful Accounts

Changes in the allowance for doubtful accounts are as follows:

	Nine Months Ended September 30,
	2016		2015
Allowance for doubtful accounts, beginning of period	$	3,729	$	2,851
Charges to costs and expenses	4,057		239
Account write-offs and other	195		(295		)
Allowance for doubtful accounts, end of period	$	7,981	$	2,795

Estimated Useful Lives of Property and Equipment

Depreciation and amortization of property and equipment are computed on a straight-line basis over the following estimated useful lives:

Asset Classification	Estimated Useful Life
Furniture and office equipment	Five years
Computer equipment and software costs	Three to five years
Leasehold improvements	Lesser of term of lease or five years
Automobiles	Five years
Land	Unlimited

Schedule of Earnings Per Share, Basic and Diluted

When the effects are not anti-dilutive, diluted earnings per share is calculated using the weighted-average outstanding common shares; the dilutive effect of convertible preferred stock, under the “if converted” method; and the treasury stock method with regard to warrants and stock options; all as determined under the treasury stock method.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Net income attributable to Ameresco, Inc.	$	5,715	$	4,178	$	8,763	$	1,981
Basic weighted-average shares outstanding	46,360,575		46,517,638		46,606,494		46,473,375
Effect of dilutive securities:
Stock options	69,588		1,538,721		62,542		1,149,667
Diluted weighted-average shares outstanding	46,430,163		48,056,359		46,669,036		47,623,042

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Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying value of goodwill attributable to each reportable segment are as follows:

	U.S. Regions		U.S. Federal		Canada			Small-Scale Infrastructure		Other			Total
Balance, December 31, 2015	$	24,759	$	3,375	$	3,162		$	—	$	27,789		$	59,085
Currency effects	—		—		175			—		(899		)	(724		)
Balance, September 30, 2016	$	24,759	$	3,375	$	3,337		$	—	$	26,890		$	58,361
Accumulated Goodwill Impairment Balance, December 31, 2015	$	—	$	—	$	(1,016	)	$	—	$	—		$	(1,016	)
Accumulated Goodwill Impairment Balance, September 30, 2016	$	—	$	—	$	(1,016	)	$	—	$	—		$	(1,016	)

Schedule of Intangible Assets, Net

The gross carrying amount and accumulated amortization of intangible assets are as follows:

	As of September 30,		As of December 31,
	2016		2015
Gross Carrying Amount
Customer contracts	$	7,690	$	7,898
Customer relationships	11,876		12,496
Non-compete agreements	3,240		3,324
Technology	2,728		2,701
Trade names	543		540
	26,077		26,959
Accumulated Amortization
Customer contracts	7,614		7,683
Customer relationships	7,731		6,621
Non-compete agreements	3,169		3,149
Technology	2,435		2,241
Trade names	513		495
	21,462		20,189
Intangible assets, net	$	4,615	$	6,770

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Income Taxes (Tables)

9 Months Ended

Sep. 30, 2016

Income Tax Disclosure [Abstract]

Unrecognized Tax Benefits

A reconciliation of the beginning and ending balances of the total amounts of gross unrecognized tax benefits is as follows:

	Gross Unrecognized Tax Benefits
Balance, December 31, 2015	$	2,200
Additions for prior year tax positions	—
Settlements with tax authorities	(436		)
Reductions of prior year tax positions	—
Balance, September 30, 2016	$	1,764

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Fair Value Measurement (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Liabilities Measured on a Recurring Basis

The following table presents the input level used to determine the fair values of the Company’s financial instruments measured at fair value on a recurring basis:

		Fair Value as of
		September 30,		December 31,
	Level	2016		2015
Liabilities:
Interest rate swap instruments	2	$	7,937	$	4,681

Fair Value, by Balance Sheet Grouping

Based on the analysis performed, the fair value and the carrying value of the Company’s long-term debt, excluding capital lease liabilities, are as follows:

	As of September 30, 2016				As of December 31, 2015
	Fair Value		Carrying Value		Fair Value		Carrying Value
Long-term debt	$	115,305	$	113,530	$	108,323	$	107,148

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Derivative Instruments and Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Fair Value Amounts of Liability Derivative

Information about the fair value amounts of the Company’s derivative instruments is as follows:

	Derivatives as of
	September 30, 2016			December 31, 2015
	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives Designated as Hedging Instruments:
Interest rate swap contracts	Other liabilities	$	7,937	Other liabilities	$	4,681

Effect of Derivative Instruments on the Consolidated Statements of Income (Loss), Comprehensive Loss, and Balance Sheets

The following table presents information about the effects of the Company’s derivative instruments on the consolidated statements of income and consolidated statements of comprehensive income (loss):

	Location of Gain Recognized in Net Income	Amount of Gain Recognized in Net Income
		Three Months Ended September 30,						Nine Months Ended September 30,
		2016			2015			2016			2015
Derivatives Designated as Hedging Instruments:
Interest rate swap contracts	Other expenses, net	$	(74	)	$	(93	)	$	(227	)	$	(277	)

The following table summarizes the pre-tax amount of unrealized gain or loss recognized in accumulated other comprehensive loss, net (“AOCI”) in the Company’s consolidated balance sheets:

	Nine Months Ended
	September 30, 2016
Derivatives Designated as Hedging Instruments:
Accumulated loss in AOCI at the beginning of the period	$	(2,548	)
Unrealized loss recognized in AOCI	(1,302		)
Loss reclassified from AOCI to other expenses, net	(925		)
Accumulated loss in AOCI at the end of the period	$	(4,775	)

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Business Segment Information (Tables)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Schedule of Operational Results by Business Segments

An analysis of the Company’s business segment information and reconciliation to the condensed consolidated financial statements is as follows:

	U.S. Regions		U.S. Federal		Canada			Small-Scale Infrastructure		All Other			Total Consolidated
Three Months Ended September 30, 2016
Revenues	$	83,652	$	46,498	$	12,018		$	21,790	$	16,640		$	180,598
Interest income	—		2		—			10		—			12
Interest expense	—		278		493			1,116		—			1,887
Depreciation and amortization of intangible assets	116		686		288			4,063		649			5,802
Unallocated corporate activity	—		—		—			—		—			(10,478		)
Income (loss) before taxes, excluding unallocated corporate activity	7,918		5,338		(154		)	5,312		(261		)	18,153
Three Months Ended September 30, 2015
Revenues	103,847		35,491		12,931			16,025		20,848			189,142
Interest income	—		—		—			—		—			—
Interest expense	—		—		369			990		—			1,359
Depreciation and amortization of intangible assets	213		299		278			3,691		1,020			5,501
Unallocated corporate activity	—		—		—			—		—			(6,235		)
Income (loss) before taxes, excluding unallocated corporate activity	10,581		4,332		(1,660		)	2,204		(1,701		)	13,756
Nine Months Ended September 30, 2016
Revenues	195,856		128,266		40,023			61,543		51,314			477,002
Interest income	—		7		—			29		—			36
Interest expense	—		666		1,243			3,212		—			5,121
Depreciation and amortization of intangible assets	390		1,913		788			11,663		1,997			16,751
Unallocated corporate activity	—		—		—			—		—			(25,044		)
Income (loss) before taxes, excluding unallocated corporate activity	12,732		16,303		(1,457		)	9,923		(971		)	36,530
Nine Months Ended September 30, 2015
Revenues	221,875		90,071		37,663			45,947		61,508			457,064
Interest income	—		—		3			159		—			162
Interest expense	—		—		980			2,914		—			3,894
Depreciation and amortization of intangible assets	622		907		803			10,571		3,044			15,947
Unallocated corporate activity	—		—		—			—		—			(19,640		)
Income (loss) before taxes, excluding unallocated corporate activity	$	18,656	$	12,632	$	(7,238	)	$	4,553	$	(4,795	)	$	23,808

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Summary of Significant Accounting Policies- Use of Estimates (Details)	9 Months Ended
	Sep. 30, 2016 $ / participant
Accounting Policies [Abstract]
Maximum exposure per participant	100,000

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Summary of Significant Accounting Policies- Restricted Cash (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Accounting Policies [Abstract]
Restricted cash non-current	$ 19,333	$ 13,515

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Summary of Significant Accounting Policies- Accounts Receivable (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Changes in the Allowance for Doubtful Accounts [Roll Forward]
Allowance for doubtful accounts, beginning of period	$ 3,729	$ 2,851	$ 2,851
Charges to costs and expenses	4,057	239
Account write-offs and other	195	(295)
Allowance for doubtful accounts, end of period	7,981	$ 2,795	3,729
Loss contingency, additional exposure	$ 758
Contracts receivable retainage allowances and reserves			$ 1,282
Minimum
Changes in the Allowance for Doubtful Accounts [Roll Forward]
Accounts receivable retainage	5.00%
Maximum
Changes in the Allowance for Doubtful Accounts [Roll Forward]
Accounts receivable retainage	10.00%
Canada | Operating Segments
Changes in the Allowance for Doubtful Accounts [Roll Forward]
Bad debt expense	$ 1,934
Accounts Receivable
Changes in the Allowance for Doubtful Accounts [Roll Forward]
Allowance for doubtful accounts receivable, period increase	2,394
Bad debt expense	1,655
Costs in Excess of Billings
Changes in the Allowance for Doubtful Accounts [Roll Forward]
Allowance for doubtful accounts receivable, period increase	476
Construction in Progress, Gross
Changes in the Allowance for Doubtful Accounts [Roll Forward]
Allowance for doubtful accounts receivable, period increase	325
Contract Receivable Retainage, Net
Changes in the Allowance for Doubtful Accounts [Roll Forward]
Bad debt expense	$ 279

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Summary of Significant Accounting Policies- Property and Equipment (Details)	9 Months Ended
	Sep. 30, 2016
Furniture and office equipment
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful life	5 years
Computer equipment and software costs | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful life	3 years
Computer equipment and software costs | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful life	5 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful life	5 years
Automobiles
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful life	5 years
Land | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, land, estimated useful life	Unlimited

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Summary of Significant Accounting Policies- Project Assets (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Accounting Policies [Abstract]
Interest costs capitalized	$ 289,000	$ 232,000	$ 616,000	$ 480,000
Minimum qualifying operating period for prorated repayments of grants			5 years
Deferred grant income	$ 7,877,000		$ 7,877,000		$ 8,291,000
Asset retirement obligation					$ 0

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Summary of Significant Accounting Policies - Sale-Leaseback (Details)	3 Months Ended						9 Months Ended		12 Months Ended
	Sep. 30, 2016 USD ($) project	Jun. 30, 2016 USD ($) project	Mar. 31, 2016 USD ($) project	Dec. 31, 2015 USD ($) project	Sep. 30, 2015 USD ($)	Mar. 31, 2015 USD ($) project	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Sale Leaseback Transaction [Line Items]
Proceeds from sale of solar-PV projects							$ 17,045,000	$ 7,581,000
Solar Photovoltaic Projects
Sale Leaseback Transaction [Line Items]
Maximum combined funding amount						$ 100,000,000
Number of solar photovoltaic projects sold | project	1	3	2	1		2
Proceeds from sale of solar-PV projects	$ 6,037,000	$ 7,467,000	$ 3,541,000	$ 4,925,000		$ 7,581,000
Percentage of fair value threshold, integral equipment							10.00%
Sale leaseback transaction, deferred gain	1,040,000				$ 1,029,000		$ 1,040,000	$ 1,029,000
Lease terms		20 years		20 years				20 years	20 years
Sale leaseback transaction, deferred loss		$ 124,000		$ 1,421,000
Capital lease liabilities								$ 3,511,000
Solar Photovoltaic Projects | Minimum
Sale Leaseback Transaction [Line Items]
Lease terms							20 years
Monthly payments							$ 2,000		$ 7,000
Solar Photovoltaic Projects | Maximum
Sale Leaseback Transaction [Line Items]
Lease terms							25 years	25 years
Monthly payments							$ 397,000		$ 348,000
Solar Photovoltaic Projects | Assets Held under Capital Leases
Sale Leaseback Transaction [Line Items]
Capital lease assets	3,158,000			$ 3,299,000	$ 0		8,830,000
Solar Photovoltaic Projects 25 Year Term
Sale Leaseback Transaction [Line Items]
Sale leaseback transaction, deferred gain	$ 333,000						$ 333,000
Lease terms	25 years
Solar Photovoltaic Projects 25 Year Term | Minimum
Sale Leaseback Transaction [Line Items]
Monthly payments	$ 2,000
Solar Photovoltaic Projects 25 Year Term | Maximum
Sale Leaseback Transaction [Line Items]
Monthly payments	$ 397,000

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Summary of Significant Accounting Policies- Fair Value Measurements (Details) $ in Thousands	Sep. 30, 2016 USD ($)
Level 2
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Carrying value of fixed-rate long-term debt in excess of fair value	$ 1,775

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Summary of Significant Accounting Policies - Share-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 328	$ 396	$ 1,086	$ 1,367
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested stock options unrecognized compensation expense	$ 3,306		$ 3,306
Non-vested stock options unrecognized compensation expense, weighted-average period of recognition			2 years 10 months 2 days

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Summary of Significant Accounting Policies - Share Repurchase Agreement (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Apr. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Open market purchase of treasury shares		$ 4,451,000
Treasury Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Open market purchase of common shares (in shares)	503,246	920,944
Open market purchase of treasury shares	$ 2,502,000	$ 4,451,000
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount (up to)			$ 10,000,000

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Summary of Significant Accounting Policies - Derivative Financial Instruments (Details) - Interest rate swap instruments $ in Thousands	1 Months Ended
	Sep. 30, 2015 USD ($)	Oct. 31, 2012 USD ($) swap	Jul. 31, 2011 USD ($)	Mar. 31, 2010 USD ($)	Sep. 30, 2013 USD ($)	Dec. 31, 2007 USD ($) contract
Derivative [Line Items]
Number of instruments held | contract						2
Interest Rate Swap Contract 1
Derivative [Line Items]
Initial notional amount of interest rate swaps						$ 13,081
Interest rate swaps, variable to fixed interest rates						5.40%
Interest Rate Swap Contract 2
Derivative [Line Items]
Initial notional amount of interest rate swaps						$ 3,256
Interest rate swaps, variable to fixed interest rates						5.30%
Interest Rate Swap Contract 3
Derivative [Line Items]
Initial notional amount of interest rate swaps				$ 27,900
Interest rate swaps, variable to fixed interest rates				6.99%
Term of interest rate swap contract				14 years
Interest Rate Swap Contract 4
Derivative [Line Items]
Initial notional amount of interest rate swaps			$ 38,571
Interest rate swaps, variable to fixed interest rates			1.965%
Term of interest rate swap contract			5 years
Interest Rate Swap Contract 5
Derivative [Line Items]
Number of instruments held | swap		2
Initial notional amount of interest rate swaps		$ 16,750
Interest rate swaps, variable to fixed interest rates		1.71%
Term of interest rate swap contract		8 years
Future increase in notional amount					$ 42,247
Interest Rate Swap Contract 6
Derivative [Line Items]
Number of instruments held | swap		2
Initial notional amount of interest rate swaps		$ 25,377
Interest rate swaps, variable to fixed interest rates		3.70%
Term of interest rate swap contract		8 years
Interest Rate Swap Contract 7
Derivative [Line Items]
Initial notional amount of interest rate swaps	$ 20,746
Interest rate swaps, variable to fixed interest rates	2.19%
Term of interest rate swap contract	7 years
Interest Rate Swap Contract 8
Derivative [Line Items]
Initial notional amount of interest rate swaps	$ 14,084
Interest rate swaps, variable to fixed interest rates	3.26%
Term of interest rate swap contract	15 years

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Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accounting Policies [Abstract]
Net income attributable to Ameresco, Inc.	$ 5,715	$ 4,178	$ 8,763	$ 1,981
Basic weighted-average shares outstanding	46,360,575	46,517,638	46,606,494	46,473,375
Effect of dilutive securities:
Stock options (in shares)	69,588	1,538,721	62,542	1,149,667
Diluted weighted-average shares outstanding	46,430,163	48,056,359	46,669,036	47,623,042
Stock options excluded from calculation of dilutive shares as the effect would be anti-dilutive (in shares)	3,437,620	2,171,104	3,437,620	1,704,004

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Goodwill and Intangible Assets- Goodwill (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Balance, December 31, 2015	$ 59,085
Currency effects	(724)
Balance, September 30, 2016	58,361
Accumulated Goodwill Impairment	(1,016)	$ (1,016)
Operating Segments | U.S. Regions
Goodwill [Roll Forward]
Balance, December 31, 2015	24,759
Currency effects	0
Balance, September 30, 2016	24,759
Accumulated Goodwill Impairment	0	0
Operating Segments | U.S. Federal
Goodwill [Roll Forward]
Balance, December 31, 2015	3,375
Currency effects	0
Balance, September 30, 2016	3,375
Accumulated Goodwill Impairment	0	0
Operating Segments | Canada
Goodwill [Roll Forward]
Balance, December 31, 2015	3,162
Currency effects	175
Balance, September 30, 2016	3,337
Accumulated Goodwill Impairment	(1,016)	(1,016)
Operating Segments | Small-Scale Infrastructure
Goodwill [Roll Forward]
Balance, December 31, 2015	0
Currency effects	0
Balance, September 30, 2016	0
Accumulated Goodwill Impairment	0	0
Operating Segments | Other
Goodwill [Roll Forward]
Balance, December 31, 2015	27,789
Currency effects	(899)
Balance, September 30, 2016	26,890
Accumulated Goodwill Impairment	$ 0	$ 0

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Goodwill and Intangible Assets- Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 26,077		$ 26,077		$ 26,959
Accumulated Amortization	21,462		21,462		20,189
Intangible assets, net	4,615		4,615		6,770
Amortization of intangible assets			1,793	$ 3,041
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,690		7,690		7,898
Accumulated Amortization	7,614		7,614		7,683
Amortization of intangible assets	46	$ 230	140	689
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,876		11,876		12,496
Accumulated Amortization	7,731		7,731		6,621
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,240		3,240		3,324
Accumulated Amortization	3,169		3,169		3,149
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,728		2,728		2,701
Accumulated Amortization	2,435		2,435		2,241
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	543		543		540
Accumulated Amortization	513		513		$ 495
Customer Relationships, Noncompete Agreements, Technology and Trade Names
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 536	$ 787	$ 1,653	$ 2,352
Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life			4 years
Minimum | Customer contracts
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets useful life			1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life			15 years
Maximum | Customer contracts
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets useful life			5 years

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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income tax provision	$ 1,865	$ 3,343	$ 2,872	$ 2,187
Effective tax rate	24.30%	44.40%	25.00%	52.50%
Unrecognized tax benefits	$ 1,764		$ 1,764		$ 2,200
Unrecognized tax benefits, if recognized would affect effective income tax rate	$ 400		$ 400		$ 800

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Income Taxes - Unrecognized tax benefits (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of period	$ 2,200
Additions for prior year tax positions	0
Settlements with tax authorities	(436)
Reductions of prior year tax positions	0
Balance, end of period	$ 1,764

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Commitments and Contingencies- Solar Tariff Contingency (Details) - Unfavorable Regulatory Action - shipment	1 Months Ended	3 Months Ended			6 Months Ended
	Oct. 31, 2012	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Mar. 31, 2015
Loss Contingencies [Line Items]
Anti-dumping duty rate					31.18%
Solar tariff, countervailing duty rate prior to increase	3.61%		3.61%	3.61%
Solar tariff, countervailing duty rate	15.24%
Number of remaining covered shipments		1
Maximum
Loss Contingencies [Line Items]
Anti-dumping duty rate	249.96%

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Commitments and Contingencies- Commitments as a Result of Acquisitions (Details) - EEX	Sep. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jun. 30, 2014 GBP (£)
Loss Contingencies [Line Items]
Business combination, contingent consideration arrangements, range of outcomes, value, high (up to)	$ 5,836,000		£ 4,500,000
Business combination, contingent consideration, liability	$ 0	$ 0

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Fair Value Measurement- Fair Value of Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Recurring | Level 2 | Interest rate swap instruments
Liabilities:
Interest rate swap instruments	$ 7,937	$ 4,681

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Fair Value Measurement- Fair Value and Carrying Value of Long-term Debt (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Long-term debt value, fair value	$ 115,305,000	$ 108,323,000
Long-term debt value, carrying value	113,530,000	$ 107,148,000
Assets, fair value disclosure, nonrecurring	$ 0

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Derivative Instruments and Hedging Activities- Fair Value of Derivative Instruments on the Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Derivatives Designated as Hedging Instruments | Interest rate swap instruments | Other liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities, fair value	$ 7,937	$ 4,681

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Derivative Instruments and Hedging Activities- Effects on Statements of Income (Loss) and Consolidated Statements of Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivatives Designated as Hedging Instruments | Interest rate swap instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Recognized in Net Income	$ (74)	$ (93)	$ (227)	$ (277)

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Derivative Instruments and Hedging Activities- Effects of Derivative Instruments in Accumulated Other Comprehensive Loss (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Loss
Balance at beginning of period	$ 289,542
Balance at end of period	292,224
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Loss
Balance at beginning of period	(2,548)
Unrealized loss recognized in AOCI	(1,302)
Loss reclassified from AOCI to other expenses, net	(925)
Balance at end of period	$ (4,775)

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Investment Fund (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Operating Cash
Variable Interest Entity [Line Items]
Variable interest entity, carrying amount, assets	$ 949
Restricted Cash
Variable Interest Entity [Line Items]
Variable interest entity, carrying amount, assets	1,554	$ 5,419
Accounts Receivable
Variable Interest Entity [Line Items]
Variable interest entity, carrying amount, assets	241
Costs and Estimated Earnings in Excess of Billings
Variable Interest Entity [Line Items]
Variable interest entity, carrying amount, assets	293
Prepaid Expenses and Other Current Assets
Variable Interest Entity [Line Items]
Variable interest entity, carrying amount, assets	43	25
Project Assets
Variable Interest Entity [Line Items]
Variable interest entity, carrying amount, assets	32,535	32,657
Other Assets
Variable Interest Entity [Line Items]
Variable interest entity, carrying amount, assets	84	$ 112
Accrued Expenses and Other Current Liabilities
Variable Interest Entity [Line Items]
Variable interest entity, consolidated, carrying amount, liabilities	$ 33

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Non-Controlling Interests (Details)	9 Months Ended
	Sep. 30, 2016
Noncontrolling Interest [Abstract]
Term of extension of Call Option	6 months
Term of extension of Put Option	1 year

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Business Segment Information - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016
Operating Segments | Canada
Segment Reporting Information [Line Items]
Bad debt expense		$ 1,934
Customer Who Declared Bankruptcy
Segment Reporting Information [Line Items]
Unallocated corporate activity	$ 2,194	$ 3,195

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Business Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Revenues	$ 180,598	$ 189,142	$ 477,002	$ 457,064
Interest income	12	0	36	162
Interest expense	1,887	1,359	5,121	3,894
Depreciation and amortization of intangible assets	5,802	5,501	16,751	15,947
Income (loss) before taxes, excluding unallocated corporate activity	18,153	13,756	36,530	23,808
Customer Who Declared Bankruptcy
Segment Reporting Information [Line Items]
Unallocated corporate activity	(2,194)		(3,195)
Operating Segments | U.S. Regions
Segment Reporting Information [Line Items]
Revenues	83,652	103,847	195,856	221,875
Interest income	0	0	0	0
Interest expense	0	0	0	0
Depreciation and amortization of intangible assets	116	213	390	622
Income (loss) before taxes, excluding unallocated corporate activity	7,918	10,581	12,732	18,656
Operating Segments | U.S. Federal
Segment Reporting Information [Line Items]
Revenues	46,498	35,491	128,266	90,071
Interest income	2	0	7	0
Interest expense	278	0	666	0
Depreciation and amortization of intangible assets	686	299	1,913	907
Income (loss) before taxes, excluding unallocated corporate activity	5,338	4,332	16,303	12,632
Operating Segments | Canada
Segment Reporting Information [Line Items]
Bad debt expense			1,934
Revenues	12,018	12,931	40,023	37,663
Interest income	0	0	0	3
Interest expense	493	369	1,243	980
Depreciation and amortization of intangible assets	288	278	788	803
Income (loss) before taxes, excluding unallocated corporate activity	(154)	(1,660)	(1,457)	(7,238)
Operating Segments | Small-Scale Infrastructure
Segment Reporting Information [Line Items]
Revenues	21,790	16,025	61,543	45,947
Interest income	10	0	29	159
Interest expense	1,116	990	3,212	2,914
Depreciation and amortization of intangible assets	4,063	3,691	11,663	10,571
Income (loss) before taxes, excluding unallocated corporate activity	5,312	2,204	9,923	4,553
Operating Segments | Other
Segment Reporting Information [Line Items]
Revenues	16,640	20,848	51,314	61,508
Interest income	0	0	0	0
Interest expense	0	0	0	0
Depreciation and amortization of intangible assets	649	1,020	1,997	3,044
Income (loss) before taxes, excluding unallocated corporate activity	(261)	(1,701)	(971)	(4,795)
Unallocated corporate activity
Segment Reporting Information [Line Items]
Unallocated corporate activity	(10,478)	(6,235)	(25,044)	(19,640)
Unallocated corporate activity | U.S. Regions
Segment Reporting Information [Line Items]
Unallocated corporate activity	0	0	0	0
Unallocated corporate activity | U.S. Federal
Segment Reporting Information [Line Items]
Unallocated corporate activity	0	0	0	0
Unallocated corporate activity | Canada
Segment Reporting Information [Line Items]
Unallocated corporate activity	0	0	0	0
Unallocated corporate activity | Small-Scale Infrastructure
Segment Reporting Information [Line Items]
Unallocated corporate activity	0	0	0	0
Unallocated corporate activity | Other
Segment Reporting Information [Line Items]
Unallocated corporate activity	$ 0	$ 0	$ 0	$ 0

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Long-Term Debt - Term Loan (Details) - Term Loan	Sep. 30, 2016 USD ($)	Aug. 31, 2016 USD ($) bank	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)
Debt Instrument [Line Items]
Debt outstanding	$ 4,767,000
Weighted average interest rate	2.59%
Number of banks | bank		2
Fixed interest rate		4.95%
2015 Variable Rate Construction Term Loan
Debt Instrument [Line Items]
Original principal amount				$ 20,746,000
Debt outstanding			$ 17,663,000
2015 Variable Rate Term Loan
Debt Instrument [Line Items]
Debt outstanding	$ 20,572,000
Weighted average interest rate	3.34%
Fixed Rate Construction Term Loan
Debt Instrument [Line Items]
Original principal amount	$ 4,837,000	$ 6,358,000

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Long-Term Debt- Senior Secured Credit Facility - Revolver and Term Loan (Details)	9 Months Ended
	Sep. 30, 2016 USD ($) Rate	Dec. 31, 2015 USD ($)	Jun. 30, 2015 USD ($) bank
Line of Credit Facility [Line Items]
Number of banks | bank			2
Maximum percentage of investment allowed in non-core subsidiaries	49.00%
Minimum debt service coverage ratio	1.5
As of the end of each fiscal quarter ending on or before June 30, 2016
Line of Credit Facility [Line Items]
Covenant leverage ratio (not to exceed)	2.00
As of the end of each fiscal quarter ending September 30, 2016, December 31, 2016, March 31, 2017 and June 30, 2017
Line of Credit Facility [Line Items]
Covenant leverage ratio (not to exceed)	2.75
As of the end of each fiscal quarter ending September 30, 2017 and thereafter
Line of Credit Facility [Line Items]
Covenant leverage ratio (not to exceed)	2.00
Term Loan
Line of Credit Facility [Line Items]
Current borrowing capacity			$ 17,143,000
Amount outstanding	$ 10,000,000	$ 14,285,000
Weighted average interest rate	2.59%
Principal payments due in quarterly installments	$ 1,429,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Current borrowing capacity			60,000,000
Additional borrowing capacity			25,000,000
Capacity available in Canadian Dollars, Euros, and Pounds Sterling (up to)			$ 20,000,000
Amount outstanding	$ 18,733,000	$ 11,300,000
Commitment fee | Rate	0.375%
Interest rate at period end	3.75%
Revolving Credit Facility | Adjusted Base Rate Applicable Margin Rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Revolving Credit Facility | Adjusted Base Rate Applicable Margin Rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.25%
Revolving Credit Facility | Federal Funds Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Revolving Credit Facility | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Revolving Credit Facility | LIBOR | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.00%
Revolving Credit Facility | LIBOR | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%

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Subsequent Events (Details) - Solar Photovoltaic Projects - Subsequent Event $ in Thousands	1 Months Ended
	Oct. 31, 2016 USD ($)
Subsequent Event [Line Items]
Construction loan agreement, maximum percentage of construction costs to be financed	80.00%
Construction loan	$ 35,000