Form 10-Q

Large accelerated filer

Accelerated filer

Non-accelerated filer

¨ (Do not check if a smaller reporting company)

Smaller reporting company

0001193125-11-128315.txt : 20110505 0001193125-11-128315.hdr.sgml : 20110505 20110505152402 ACCESSION NUMBER: 0001193125-11-128315 CONFORMED SUBMISSION TYPE: 10-Q PUBLIC DOCUMENT COUNT: 13 CONFORMED PERIOD OF REPORT: 20110331 FILED AS OF DATE: 20110505 DATE AS OF CHANGE: 20110505 FILER: COMPANY DATA: COMPANY CONFORMED NAME: NSTAR/MA CENTRAL INDEX KEY: 0001035675 STANDARD INDUSTRIAL CLASSIFICATION: ELECTRIC SERVICES [4911] IRS NUMBER: 043466300 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 10-Q SEC ACT: 1934 Act SEC FILE NUMBER: 001-14768 FILM NUMBER: 11814371 BUSINESS ADDRESS: STREET 1: 800 BOYLSTON ST CITY: BOSTON STATE: MA ZIP: 02199 BUSINESS PHONE: 6174242000 MAIL ADDRESS: STREET 1: 800 BOYLSTON STREET CITY: BOSTON STATE: MA ZIP: 02199 FORMER COMPANY: FORMER CONFORMED NAME: B E C ENERGY DATE OF NAME CHANGE: 19980421 FORMER COMPANY: FORMER CONFORMED NAME: BOSTON EDISON HOLDINGS DATE OF NAME CHANGE: 19970313 10-Q 1 d10q.htm FORM 10-Q Form 10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

x	Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended March 31, 2011

¨	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: 001-14768

NSTAR

(Exact name of registrant as specified in its charter)


Massachusetts		04-3466300
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification Number)

800 Boylston Street, Boston, Massachusetts		02199
(Address of principal executive offices)		(Zip Code)

(617) 424-2000

(Registrant’s telephone number, including area code)

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. x Yes ¨ No

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 during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). x Yes ¨ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company (as defined in Rule 12b-2 of the Exchange Act).

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

The number of shares outstanding of the registrant’s class of common stock was 103,586,727 Common Shares, par value $1 per share, as of May 2, 2011.

NSTAR

Form 10-Q

Quarterly Period Ended March 31, 2011

Table of Contents


			Page No.
Glossary of Terms				2 - 3

Cautionary Statement Regarding Forward-Looking Information				4

Part I. Financial Information:
	Item 1.	Financial Statements (unaudited)
		Consolidated Statements of Income		5
		Consolidated Statements of Comprehensive Income		6
		Consolidated Statements of Common Shareholders’ Equity		6
		Consolidated Balance Sheets		7 - 8
		Consolidated Statements of Cash Flows		9 - 10
		Notes to Consolidated Financial Statements		11 - 24
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		24 - 38
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk		38
	Item 4.	Controls and Procedures		39

Part II. Other Information:
	Item 1.	Legal Proceedings		39
	Item 1A.	Risk Factors		39
	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		39
	Item 6.	Exhibits		40

	Signature			41

	Exhibit 31.1	Section 302 CEO Certification
	Exhibit 31.2	Section 302 CFO Certification
	Exhibit 32.1	Section 906 CEO Certification
	Exhibit 32.2	Section 906 CFO Certification

Important Shareholder Information

NSTAR files its Forms 10-K, 10-Q, and 8-K reports, proxy statements, and other information with the SEC. You may access materials free of charge on the SEC’s website at www.sec.gov or on NSTAR’s website at: www.nstar.com: Select “Investor Relations,” “Financial Information,” then select “SEC Filings” from the drop-down list. Copies of NSTAR’s SEC filings may also be obtained free of charge by writing to NSTAR’s Investor Relations Department at the address on the cover of this Form 10-Q or by calling 781-441-8338.

In addition, NSTAR’s Board of Trustees has several committees, including an Audit, Finance and Risk Management Committee, an Executive Personnel Committee and a Board Governance and Nominating Committee. The Board of Trustees also has a standing Executive Committee. The Board of Trustees has adopted the NSTAR Board of Trustees Guidelines on Significant Corporate Governance Issues, a Code of Ethics for the Principal Executive Officer, General Counsel, and Senior Financial Officers pursuant to Section 406 of the Sarbanes-Oxley Act, and a Code of Ethics and Business Conduct for Trustees, Officers and Employees (“Code of Conduct”). NSTAR intends to disclose any amendment to, and any waiver from, a provision of the Code of Ethics that applies to the Chief Executive Officer or Chief Financial Officer or any other executive officer and that relates to any element of the Code of Ethics definition enumerated in Item 406(b) of Regulation S-K, in a press release, on our website or on Form 8-K, within four business days following the date of such amendment or waiver. NSTAR’s Corporate Governance documents, including charters, guidelines and codes, and any amendments to such charters, guidelines and codes that are applicable to NSTAR’s executive officers, senior financial officers or trustees can be accessed free of charge on NSTAR’s website at: www.nstar.com: Select “Investor Relations” and “Company Information.”

The certifications of NSTAR’s Chief Executive Officer and Chief Financial Officer pursuant to Sections 302 and 906 of the Sarbanes-Oxley Act are attached to this Quarterly Report on Form 10-Q as Exhibits 31.1, 31.2, 32.1, and 32.2.

Glossary of Terms

The following is a glossary of abbreviated names or acronyms frequently used throughout this report.


NSTAR Companies
NSTAR		NSTAR (Holding company), Company or NSTAR and its subsidiaries (as the context requires)
NSTAR Electric		NSTAR Electric Company
NSTAR Gas		NSTAR Gas Company
NSTAR Electric & Gas		NSTAR Electric & Gas Corporation
MATEP		Medical Area Total Energy Plant, Inc.
NPT		Northern Pass Transmission LLC
NSTAR Com		NSTAR Communications, Inc.
Hopkinton		Hopkinton LNG Corp.
HEEC		Harbor Electric Energy Company
Unregulated operations		Represents non rate-regulated operations of NSTAR Com and Hopkinton
Discontinued operations		Represents discontinued operations of MATEP

Regulatory and Other Authorities
DOE		U.S. Department of Energy
DPU		Massachusetts Department of Public Utilities
DPUC		Connecticut Department of Public Utility Control
FERC		Federal Energy Regulatory Commission
IRS		U.S. Internal Revenue Service
ISO-NE		ISO (Independent System Operator) - New England Inc.
NHPUC		New Hampshire Public Utilities Commission
NRC		U.S. Nuclear Regulatory Commission
NYMEX		New York Mercantile Exchange
OCC		Connecticut Office of Consumer Counsel
PCAOB		Public Company Accounting Oversight Board (United States)
SEC		U.S. Securities and Exchange Commission
S&P		Standard & Poor’s

Other
AFUDC		Allowance for Funds Used During Construction
AOCI		Accumulated Other Comprehensive Income
ASC		Financial Accounting Standards Board (U.S.) Accounting Standards Codification
BBtu		Billions of British thermal units
Bcf		Billion cubic feet
CAP		IRS Compliance Assurance Process
CGAC		Cost of Gas Adjustment Clause
CPSL		Capital Projects Scheduling List
CY		Connecticut Yankee Atomic Power Company
EERF		Energy Efficiency Reconciling Factor
EPS		Earnings Per Common Share
GAAP		Accounting principles generally accepted in the United States of America
GCA		Massachusetts Green Communities Act
HQ		Hydro-Quebec

Glossary of Terms (continued)


kW		Kilowatt (equal to one thousand watts)
kWh		Kilowatthour (the basic unit of electric energy equal to one kilowatt of power supplied for one hour)
LDAC		Local Distribution Adjustment Clause
LNG		Liquefied Natural Gas
MD&A		Management’s Discussion and Analysis of Financial Condition and Results of Operations
MGP		Manufactured Gas Plant
MMbtu		Millions of British thermal units
MW		Megawatts
MWh		Megawatthour (equal to one million watthours)
MY		Maine Yankee Atomic Power Company
NU		Northeast Utilities
PAM		Pension and PBOP Rate Adjustment Mechanism
PBOP		Postretirement Benefit Obligation other than Pensions
ROE		Return on Equity
SIP		Simplified Incentive Plan
SQI		Service Quality Indicators
TSA		Transmission Service Agreement
YA		Yankee Atomic Electric Company

Cautionary Statement Regarding Forward-Looking Information

This Quarterly Report on Form 10-Q contains statements that are considered forward-looking statements within the meaning of the Securities Act of 1933 and the Securities Exchange Act of 1934. These forward-looking statements may also be contained in other filings with the SEC, in press releases, and oral statements. You can identify these statements by the fact that they do not relate strictly to historical or current facts. These statements contain words such as “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe,” and other words and terms of similar meaning in connection with any discussion of future operating or financial performance. These statements are based on the current expectations, estimates or projections of management and are not guarantees of future performance. Some or all of these forward-looking statements may not turn out to be what NSTAR expected. Actual results could differ materially from these statements. Therefore, no assurance can be given that the outcomes stated in such forward-looking statements and estimates will be achieved.

Examples of some important factors that could cause our actual results or outcomes to differ materially from those discussed in the forward-looking statements include, but are not limited to, the following:

•

adverse financial market conditions including changes in interest rates and the availability and cost of capital

•

adverse economic conditions

•

changes to prevailing local, state and federal governmental policies and regulatory actions (including those of the DPU, other state regulatory agencies, and the FERC) with respect to allowed rates of return, rate structure, continued recovery of regulatory assets and energy costs, financings, municipalization, and operation and construction of facilities

•

acquisition and disposition of assets

•

changes in tax laws and policies

•

changes in, and compliance with, environmental and safety laws and policies

•

new governmental regulations or changes to existing regulations that impose additional operating requirements or liabilities

•

changes in available information and circumstances regarding legal issues and the resulting impact on our estimated litigation costs

•

weather conditions that directly influence the demand for electricity and natural gas

•

impact of continued cost control processes on operating results

•

ability to maintain current credit ratings

•

impact of uninsured losses

•

impact of adverse union contract negotiations

•

damage from major storms and other natural events and disasters

•

impact of conservation measures and self-generation by our customers

•

changes in financial accounting and reporting standards

•

changes in hazardous waste site conditions and the cleanup technology

•

prices and availability of operating supplies

•

impact of terrorist acts and cyber-attacks

•

impact of service quality performance measures, and

•

impact of the expected timing, likelihood and expense of completion of the pending merger with Northeast Utilities, any of which could be adversely affected.

Any forward-looking statement speaks only as of the date of this filing and NSTAR undertakes no obligation to publicly update forward-looking statements, whether as a result of new information, future events, or otherwise. You are advised, however, to consult all further disclosures NSTAR makes in its filings to the SEC. Other factors in addition to those listed here could also adversely affect NSTAR. This Quarterly Report also describes material contingencies and critical accounting policies and estimates in the accompanying Part I, Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” in Part II, Item 1A, “Risk Factors” and in the accompanying Part 1, Item 1, Notes to Consolidated Financial Statements and NSTAR encourages a review of these items.

Part I. Financial Information

Item 1. Financial Statements

NSTAR

Consolidated Statements of Income

(Unaudited)

(in thousands, except per share amounts)


	Three Months Ended March 31,
	2011			2010

Operating revenues	$	792,698		$	767,468


Operating expenses:
Purchased power and transmission		279,312			283,243
Cost of gas sold		109,008			110,619
Operations and maintenance		121,296			109,989
Depreciation and amortization		81,033			93,059
Energy efficiency and renewable energy programs		43,559			20,258
Property and other taxes		34,548			31,190

Total operating expenses		668,756			648,358


Operating income		123,942			119,110


Interest charges (income):
Long-term debt		29,839			33,456
Transition property securitization		2,355			3,763
Interest income and other, net		(7,130	)		(5,883	)

Total interest charges		25,064			31,336


Other income (deductions):
Other income		1,215			970
Other deductions		(6,770	)		(517	)

Total other (deductions) income		(5,555	)		453


Income from continuing operations before income taxes		93,323			88,227
Income taxes		36,422			33,305

Net income from continuing operations		56,901			54,922
Income from discontinued operations, net of tax		—			5,575
Loss on sale of discontinued operations, net of tax		—			289

Net income		56,901			60,208
Preferred stock dividends - noncontrolling interest		490			490

Net income attributable to common shareholders	$	56,411		$	59,718


Weighted average common shares outstanding:
Basic		103,587			106,808
Diluted		103,975			107,030
Earnings per common share – Basic and Diluted:
Continuing operations	$	0.54		$	0.51
Discontinued operations		—			0.05

Total earnings	$	0.54		$	0.56


Dividends declared per common share	$	0.425		$	0.40

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

NSTAR

Consolidated Statements of Comprehensive Income

(Unaudited)

(in thousands)


	Three Months Ended March 31,
	2011			2010

Net income attributable to common shareholders	$	56,411		$	59,718

Other comprehensive income from continuing operations, net:
Pension and postretirement benefits		357			380
Deferred income tax expense		(144	)		(156	)

Total other comprehensive income from continuing operations, net		213			224

Comprehensive income from continuing operations		56,624			59,942

Other comprehensive income from discontinued operations, net:
Postretirement benefits		—			26
Deferred income tax expense		—			(11	)

Total other comprehensive income from discontinued operations, net		—			15

Comprehensive income	$	56,624		$	59,957

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

NSTAR

Consolidated Statements of Common Shareholders’ Equity

(Unaudited)

(in thousands, except share information)


	Common Shares Issued and Outstanding (200,000,000 shares authorized)		Par Value Issued ($1/Share)		Premium on Common Shares			Retained Earnings			Accumulated Other Comprehensive Loss			Total

Balance, December 31, 2010		103,586,727	$	103,587	$	790,574		$	1,054,987		$	(14,585	)	$	1,934,563
Equity compensation plans		—		—		(6,411	)		—			—			(6,411	)
Net income attributable to common shareholders		—		—		—			56,411			—			56,411
Dividends declared to common shareholders		—		—		—			(44,023	)		—			(44,023	)
Other comprehensive income:
Pension & postretirement benefits, net of tax		—		—		—			—			213			213

Balance, March 31, 2011		103,586,727	$	103,587	$	784,163		$	1,067,375		$	(14,372	)	$	1,940,753

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

NSTAR

Consolidated Balance Sheets

(Unaudited)

(in thousands)


	March 31, 2011		December 31, 2010
Assets
Current assets:
Cash and cash equivalents	$	11,930	$	13,083
Restricted cash		—		17,007
Refundable income taxes		129,120		129,120
Accounts receivable, net of allowance of $36,029 and $35,765, respectively		316,809		272,673
Accrued unbilled revenues		41,337		55,366
Regulatory assets		319,331		412,349
Inventory, at average cost		31,172		51,362
Other		41,448		45,713

Total current assets		891,147		996,673


Utility plant:
Electric and gas, at original cost		6,326,628		6,274,123
Less: accumulated depreciation		1,663,257		1,625,564

Net electric and gas plant-in-service		4,663,371		4,648,559
Construction work in progress		118,525		106,710

Net utility plant		4,781,896		4,755,269


Other property and investments:
Unregulated property, at original cost, net		15,862		16,168
Electric equity investments		5,539		5,619
Other investments		78,234		77,157

Total other property and investments		99,635		98,944


Deferred debits:
Regulatory assets		2,016,796		2,031,626
Other deferred debits		49,954		51,413

Total deferred debits and other assets		2,066,750		2,083,039


Total assets	$	7,839,428	$	7,933,925

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

NSTAR

Consolidated Balance Sheets

(Unaudited)

(in thousands)


	March 31, 2011			December 31, 2010
Liabilities and Capitalization

Current liabilities:
Long-term debt	$	275		$	687
Transition property securitization		69,167			46,955
Notes payable		407,000			387,500
Income taxes		123,638			105,403
Accounts payable		188,610			294,805
Power contract obligations		59,654			79,200
Accrued interest		33,648			24,025
Dividends payable		44,351			44,351
Accrued expenses		13,292			20,754
Other		75,445			73,761

Total current liabilities		1,015,080			1,077,441


Deferred credits and other liabilities:
Accumulated deferred income taxes		1,309,565			1,305,488
Unamortized investment tax credits		14,774			15,173
Power contract obligations		134,905			143,046
Pension and other postretirement liability		675,397			672,517
Regulatory liability - cost of removal		283,870			279,478
Other		164,188			161,936

Total deferred credits and other liabilities		2,582,699			2,577,638


Capitalization:
Long-term debt:
Long-term debt		2,173,584			2,173,423
Transition property securitization		84,312			127,860

Total long-term debt		2,257,896			2,301,283


Noncontrolling interest – preferred stock of subsidiary		43,000			43,000


Common equity:
Common shares, par value $1 per share, 200,000,000 shares authorized, 103,586,727 issued and outstanding		103,587			103,587
Premium on common shares		784,163			790,574
Retained earnings		1,067,375			1,054,987
Accumulated other comprehensive loss		(14,372	)		(14,585	)

Total common equity		1,940,753			1,934,563


Total capitalization		4,241,649			4,278,846


Commitments and contingencies

Total liabilities and capitalization	$	7,839,428		$	7,933,925

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

NSTAR

Consolidated Statements of Cash Flows

(Unaudited)

(in thousands)


	Three Months Ended March 31,
	2011			2010
Operating activities:
Net income	$	56,901		$	60,208
Less: Income from discontinued operations, net of tax		—			5,575
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		81,033			93,059
Debt amortization		1,385			1,450
Deferred income taxes		5,601			(3,046	)
Noncash stock-based compensation		2,265			2,406
Net changes in:
Accounts receivable and accrued unbilled revenues		(30,107	)		(15,606	)
Inventory, at average cost		20,190			16,284
Other current assets		4,265			(2,094	)
Accounts payable		(84,274	)		(26,759	)
Other current liabilities		19,776			20,714
Regulatory assets		72,963			18,355
Long-term power contract obligations		(21,407	)		(31,591	)
Net change from other miscellaneous operating activities		5,664			10,179

Cash provided by operating activities of continuing operations		134,255			137,984
Cash used in operating activities of discontinued operations		—			(461	)

Net cash provided by operating activities		134,255			137,523


Investing activities:
Plant expenditures (including AFUDC)		(80,556	)		(79,005	)
Decrease in restricted cash		17,007			—
Net change in other investment activities		(1,320	)		(3,446	)

Cash used in investing activities of continuing operations		(64,869	)		(82,451	)
Cash used in investing activities of discontinued operations		—			(5,800	)

Net cash used in investing activities		(64,869	)		(88,251	)


Financing activities:
Long-term debt issuances, net		—			420,194
Debt issuance costs		—			(3,429	)
Transition property securitization redemptions		(21,336	)		(28,583	)
Long-term debt redemptions		(412	)		(500,412	)
Net change in notes payable		19,500			(16,000	)
Common share dividends paid		(44,023	)		(42,724	)
Preferred stock dividends of subsidiary to the noncontrolling interest		(490	)		(490	)
Change in disbursement accounts		(16,551	)		(12,243	)
Cash received for exercise of equity compensation		1,990			6,377
Cash used to settle equity compensation		(9,892	)		(10,201	)
Windfall tax effect of settlement of equity compensation		675			1,120

Cash used in financing activities of continuing operations		(70,539	)		(186,391	)
Cash used in financing activities of discontinued operations		—			(1,241	)

Net cash used in financing activities		(70,539	)		(187,632	)


Net decrease in cash and cash equivalents		(1,153	)		(138,360	)
Adjustment for discontinued operations, net of dividends		—			7,502
Cash and cash equivalents at the beginning of the year		13,083			143,449

Cash and cash equivalents at the end of the period	$	11,930		$	12,591

NSTAR

Consolidated Statements of Cash Flows

(Unaudited)

(in thousands)

(continued)


	Three Months Ended March 31,
	2011		2010
Supplemental disclosures of cash flow information:
Continuing operations - Cash paid during the period for:
Interest, net of amounts capitalized	$	22,477	$	32,871
Income taxes	$	14,100	$	11,400

Continuing operations - Non-cash investing activity:
Plant additions included in accounts payable	$	14,910	$	8,094

Discontinued operations - Cash paid during the period for interest	$	—	$	1,519

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

Notes to Consolidated Financial Statements

(Unaudited)

The accompanying notes should be read in conjunction with Notes to Consolidated Financial Statements included in NSTAR’s 2010 Annual Report on Form 10-K.

Note A. Business Organization and Summary of Significant Accounting Policies

1. About NSTAR

NSTAR (or the Company) is a holding company engaged through its subsidiaries in the energy delivery business serving approximately 1.4 million customers in Massachusetts, including approximately 1.1 million electric distribution customers in 81 communities and approximately 300,000 natural gas distribution customers in 51 communities. NSTAR’s retail electric and natural gas transmission and distribution utility subsidiaries are NSTAR Electric and NSTAR Gas, respectively. Reference in this report to “NSTAR” shall mean the registrant NSTAR or NSTAR and its subsidiaries as the context requires.

2. Pending Merger with Northeast Utilities

On October 16, 2010, upon unanimous approval from their respective Boards of Trustees, NSTAR and Northeast Utilities (NU) entered into an Agreement and Plan of Merger (the Merger Agreement). The transaction will be a merger of equals in a stock-for-stock transfer. Upon the terms and subject to the conditions set forth in the Merger Agreement at closing, NSTAR will become a wholly-owned subsidiary of NU. The combined company will provide electric and gas energy delivery services through six regulated electric and gas utilities in Connecticut, Massachusetts and New Hampshire serving nearly 3.5 million electric and gas customers.

Under the terms of the agreement, NSTAR shareholders will receive 1.312 NU common shares for each NSTAR common share that they own. Following completion of the merger, it is anticipated that NU shareholders will own approximately 56 percent and former NSTAR shareholders will own approximately 44 percent of the combined company. On March 4, 2011, shareholders of each company approved the merger and adopted the merger agreement. Completion of the merger is subject to various customary conditions, including receipt of required regulatory approvals.

Regulatory Approvals on Pending Merger with Northeast Utilities

Federal

On January 4, 2011, NSTAR and NU received approval from the Federal Communications Commission, and on February 10, 2011, the applicable Hart-Scott-Rodino waiting period expired. On January 7, 2011, NSTAR and NU filed an application with the Federal Energy Regulatory Commission (FERC), requesting approval of the merger by May 10, 2011. A filing was made with the Nuclear Regulatory Commission on December 9, 2010.

Massachusetts

On November 24, 2010, NSTAR and NU filed a joint petition requesting the DPU’s approval of their proposed merger. On March 10, 2011, the DPU issued an order that modified the standard of review to be applied in the review of mergers involving Massachusetts utilities from a “no net harm” standard to a “net benefits” standard, meaning that the companies must demonstrate that the pending transaction provides benefits that outweigh the costs. Applicable state law provides that mergers of Massachusetts utilities and their respective holding companies must be “consistent with the public interest.” The order states that the DPU has flexibility in applying the factors applicable to the standard of review. NSTAR and NU filed supplemental testimony with the DPU on April 8, 2011 indicating the merger could provide net savings for the combined companies of an estimated $780 million in the first ten years following the closing of the merger and provide other customer benefits. Evidentiary hearings are scheduled to begin on July 6, 2011. NSTAR and NU expect a ruling from the DPU in the second half of 2011.

Connecticut

In November 2010, the Connecticut Department of Public Utility Control (DPUC) issued a draft decision finding that it lacks jurisdiction to consider the NSTAR merger with NU. In December 2010, the Connecticut Office of Consumer Counsel (OCC) petitioned the DPUC to reconsider its draft decision. On January 26, 2011, the DPUC issued an Administrative Order stating that it would hold a hearing on the question of jurisdiction. In February 2011, oral arguments were held and in March 2011, a public information session on the merger was held. No date has been established for a final decision. In addition, legislation proposing to give the DPUC jurisdiction over the merger received a joint favorable recommendation from the Connecticut Joint Legislative Energy and Technology Committee in March 2011.

New Hampshire

On April 5, 2011, the New Hampshire Public Utilities Commission (NHPUC) issued an order finding that it does not have statutory authority to approve or reject the merger.

Maine

NSTAR and NU are also asking Maine regulators to waive jurisdiction over the merger. Although neither NSTAR nor NU subsidiaries serve any customers in Maine, Public Service Company of New Hampshire, an NU subsidiary, owns transmission and generation assets in the state that are subject to the jurisdiction of the Maine Public Utilities Commission. On April 15, 2011, a hearing examiner issued a report rejecting the waiver request, but approving the merger contingent upon approval by the FERC.

Litigation Related to the Pending Merger with NU

In October 2010, NSTAR, the members of the NSTAR board of trustees, NU, and two wholly-owned NU subsidiaries, NU Holding Energy 1 LLC and NU Holding Energy 2 LLC, were named defendants in eight lawsuits (since consolidated) filed in the Superior Court for Suffolk County, Massachusetts, and one lawsuit filed in federal court in the district of Massachusetts. The lawsuits, each of which was brought by a single shareholder, purported to be brought on behalf of classes of NSTAR shareholders opposed to the terms of the merger agreement and sought, among other things, to enjoin defendants from consummating the merger and either rescission of the merger, to the extent it is completed, or monetary damages.

On February 11, 2011, Plaintiffs moved for preliminary injunction in the Massachusetts Superior Court lawsuit seeking to enjoin the March 4, 2011 special meeting of NSTAR shareholders scheduled to vote on the merger. On March 2, 2011, the Massachusetts Superior Court denied the Plaintiffs’ motion and the special meetings of NSTAR and NU shareholders went forward as scheduled. Subsequent to the approval of the merger by shareholders of NSTAR and NU at the March 4, 2011 special meetings, the parties filed a joint motion for voluntary dismissal without prejudice of the Massachusetts Superior Court lawsuit, which was granted by the Massachusetts Superior Court on March 8, 2011 and the Plaintiffs filed a Notice of Voluntary Dismissal of the federal lawsuit in the federal court in the district of Massachusetts on March 9, 2011, effectively terminating all shareholder litigation relating to the merger.

3. Basis of Consolidation and Accounting

The accompanying consolidated financial information presented as of March 31, 2011 and for the three-month periods ended March 31, 2011 and 2010, has been prepared from NSTAR’s books and records without audit by an independent registered public accounting firm. However, NSTAR’s independent registered public accounting firm has performed a review of these interim financial statements in accordance with standards established by the PCAOB. The review report is filed as Exhibit 99.1 to this Form 10-Q. Financial information as of December 31, 2010 was derived from the audited consolidated financial statements of NSTAR, but does not include all disclosures required by GAAP. In the opinion of NSTAR’s management, all adjustments (which are of a normal recurring nature) necessary for a fair presentation of the financial information for the periods indicated, have been included. All significant intercompany transactions have been eliminated in consolidation.

NSTAR’s utility subsidiaries follow accounting policies prescribed by the FERC and the DPU. In addition, NSTAR and its subsidiaries are subject to the accounting and reporting requirements of the SEC. The accompanying Consolidated Financial Statements are prepared in conformity with GAAP. NSTAR’s utility subsidiaries are subject to the application of ASC 980, Regulated Operations, which considers the effects of regulation resulting from differences in the timing of their recognition of certain revenues and expenses from those of other businesses and industries. The energy delivery business is subject to rate-regulation that is based on cost recovery and meets the criteria for application of ASC 980.

The preparation of financial statements in conformity with GAAP requires management of NSTAR and its subsidiaries to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.

The results of operations for the three-month periods ended March 31, 2011 and 2010 are not indicative of the results that may be expected for an entire year. The demand for electricity and natural gas is affected by weather conditions, economic conditions, and consumer conservation behavior. Electric energy sales and revenues are typically higher in the winter and summer months than in the spring and fall months. Natural gas energy sales and revenues are typically higher in the winter months than during other periods of the year.

4. Pension and Postretirement Benefits Other than Pensions (PBOP) Plans

NSTAR’s net periodic Pension Plan and PBOP Plan benefit costs for the first quarter are based on the latest available participant census data. An annual actuarial valuation will be completed during the second quarter, and cost estimates will be adjusted based on the actual actuarial study results.

NSTAR’s Pension Plan and PBOP Plan assets are affected by fluctuations in the financial markets. Fluctuations in the fair value of the Pension Plan and PBOP Plan assets impact the funded status, accounting costs, and cash funding requirements of these Plans. The earnings impact of increased Pension and PBOP costs is substantially mitigated by NSTAR’s DPU-approved Pension and PBOP rate adjustment mechanism (PAM). Under the PAM, NSTAR recovers its pension and PBOP expense through a reconciling rate mechanism. The PAM removes the volatility in earnings that could result from fluctuations in market conditions and plan experience.

Pension

NSTAR provides a defined benefit retirement plan, the NSTAR Pension Plan (the Plan), that covers substantially all employees. During the three months ended March 31, 2011, NSTAR contributed $32 million to the Plan. In addition, $6 million was contributed in April 2011. NSTAR currently anticipates making additional contributions of approximately $37 million to the Plan during the remainder of 2011. The actual level of funding may differ from this estimate.

Components of net periodic pension benefit cost were as follows:


	Three Months Ended March 31,
(in millions)	2011			2010
Service cost	$	7.1		$	6.3
Interest cost		15.9			16.2
Expected return on Plan assets		(17.3	)		(15.7	)
Amortization of prior service credit		(0.2	)		(0.2	)
Recognized actuarial loss		12.0			12.7

Net periodic pension benefit cost	$	17.5		$	19.3

Postretirement Benefits Other than Pensions

NSTAR also provides health care and other benefits to retired employees who meet certain age and years of service eligibility requirements. Under certain circumstances, eligible retirees are required to contribute to the costs of postretirement benefits. During the three months ended March 31, 2011, NSTAR contributed $7.2 million to this plan. In addition, $2.4 million was contributed in April 2011. NSTAR currently anticipates contributing approximately $20.4 million for the remainder of 2011 toward these benefits. Postretirement benefit costs related to employees of the discontinued operations of MATEP for the three months ended March 31, 2010 are not included in the following table.

Components of net periodic postretirement benefit cost were as follows:


	Three Months Ended March 31,
(in millions)	2011			2010
Service cost	$	1.7		$	1.6
Interest cost		9.3			9.2
Expected return on Plan assets		(5.9	)		(5.1	)
Amortization of prior service credit		(0.4	)		(0.4	)
Amortization of transition obligation		0.2			0.2
Recognized actuarial loss		4.1			3.9

Net periodic postretirement benefit cost	$	9.0		$	9.4

5. Noncontrolling Interest – Cumulative Non-Mandatory Redeemable Preferred Stock of Subsidiary

NSTAR Electric has two outstanding series of non-mandatory redeemable preferred stock. Both series are part of a class of NSTAR Electric’s Cumulative Preferred Stock. Upon any liquidation of NSTAR Electric, holders of the Cumulative Preferred Stock are entitled to receive the liquidation preference for their shares before any distribution to the holder of the NSTAR Common Shares. The liquidation preference for each outstanding series of Cumulative Preferred Stock is equal to the par value ($100.00 per share) plus accrued and unpaid dividends.

The dividends on NSTAR Electric’s Cumulative Preferred Stock to the noncontrolling interest are reflected separately after net income and before net income attributable to common shareholders on the accompanying Consolidated Statements of Income. During the year ended December 31, 2010 and during the three months ended March 31, 2011, there were no changes in the noncontrolling interest of NSTAR Electric.

NSTAR Electric’s noncontrolling interest preferred stock is reflected as noncontrolling interest of a subsidiary in the accompanying Consolidated Balance Sheets outside of permanent equity. Each of the two preferred stock series contains provisions relating to non-payment of preferred dividends that could potentially result in the preferred shareholders being granted the majority control of the Board of Directors of NSTAR Electric until all preferred dividends are paid. As a result, the Cumulative Preferred Stock has not been classified within permanent equity.

Non-mandatory redeemable series:

Par value $100 per share, 2,890,000 shares authorized and 430,000 shares issued and outstanding:

(in thousands, except per share amounts)


Series	Current Shares Outstanding		Redemption Price/Share		March 31, 2011		December 31, 2010
4.25%		180,000	$	103.625	$	18,000	$	18,000
4.78%		250,000	$	102.80		25,000		25,000

Total non-mandatory redeemable series					$	43,000	$	43,000

6. Interest Income and Other, net

Major components of interest income and other, net were as follows:


	Three Months Ended March 31,
(in thousands)	2011			2010
Interest on regulatory deferrals	$	8,012		$	6,693
Income tax items		288			372
Other interest expense		(1,035	)		(1,186	)
Short-term debt		(230	)		(216	)
AFUDC		95			220

Total interest income and other, net	$	7,130		$	5,883

7. Variable Interest Entities

NSTAR Electric has certain long-term purchase power agreements with energy facilities where it purchases substantially all of the output from a specified facility for a specified period and has determined these agreements represent variable interests. NSTAR Electric is not considered the primary beneficiary of these entities and does not consolidate the entities because it does not control the activities most relevant to the operating results of these entities and does not hold any equity interests in the entities. NSTAR Electric’s exposure to risks and financial support commitments with respect to these entities is limited to the purchase of the power generated at the prices defined under the contractual agreements. NSTAR Electric’s involvement with these variable interest entities has no material impact on NSTAR’s financial position, financial performance, or cash flows.

8. Subsequent Events

Management has reviewed subsequent events through the date of this filing and concluded that no material subsequent events have occurred that are not accounted for in the accompanying Consolidated Financial Statements or disclosed in the accompanying Notes to Consolidated Financial Statements.

Note B. Sale of MATEP

On June 1, 2010, NSTAR completed the sale of its stock ownership interest in its district energy operations business, MATEP, for $343 million in cash, to a joint venture comprised of Veolia Energy North America, a Boston-based subsidiary of Veolia Environnement and Morgan Stanley Infrastructure Partners.

The sale resulted in a non-recurring, after-tax gain of $109.9 million, including transaction costs, or $1.04 per share, for 2010. Part of the sale proceeds were utilized to retire the $85.5 million of MATEP’s long-term Notes, together with a retirement premium of $18 million.

The operating results of MATEP for the quarter ended March 31, 2010 were separately classified and reported as discontinued operations on the accompanying Consolidated Statements of Income. A summary of discontinued operations is as follows:


(in thousands)	Three Months Ended March 31, 2010
Operating revenues	$	34,885
Operating expenses		24,935
Interest charges		1,645
Other income		272
Income taxes		3,002

Income from discontinued operations		5,575
Loss on sale of discontinued operations, net of tax		289

Net income from discontinued operations	$	5,286

Note C. Derivative Instruments

Energy Contracts

NSTAR Electric has determined that it is not required to account for the majority of its electricity supply contracts as derivatives because they qualify for, and NSTAR Electric has elected, the normal purchases and sales exception. As a result, these agreements are not reflected on the accompanying Consolidated Balance Sheets. NSTAR Electric has a long-term renewable energy contract that does not qualify for the normal purchases and sales exception and is valued at an estimated $2.1 million and $2.4 million liability as of March 31, 2011 and December 31, 2010, respectively. NSTAR Electric has measured the difference between the cost of this contract and projected market energy costs over the life of the contract, and recorded a long-term derivative liability and a corresponding long-term regulatory asset for the value of this contract. Changes in the value of the contract have no impact on earnings. NSTAR Gas has only one significant natural gas supply contract. This contract is an all-requirements portfolio asset management contract that expires in October 2011. This contract contains market based pricing terms and therefore no financial statement adjustments are required. The following costs were incurred and recorded to “Cost of gas sold” on the accompanying Consolidated Statements of Income:


	Three Months Ended March 31,
(in millions)	2011		2010
Natural gas supply costs incurred on NSTAR Gas’ all-requirements contract	$	68	$	83

Refer to the accompanying Part 1, Item 3, “Quantitative and Qualitative Disclosure About Market Risk,” for a further discussion.

Natural Gas Hedging Agreements

In accordance with a DPU order, NSTAR Gas purchases financial contracts based on NYMEX natural gas futures in order to reduce cash flow variability associated with the purchase price for approximately one-third of its natural gas purchases. This practice attempts to minimize the impact of fluctuations in prices to NSTAR’s firm gas customers. These financial contracts do not procure natural gas supply, and qualify as derivative financial instruments. The fair value of these instruments is recognized on the accompanying Consolidated Balance Sheets as an asset or liability representing amounts due from or payable to the counter parties of NSTAR Gas, as if such contracts were settled as of the balance sheet date. All actual costs incurred or benefits realized when these contracts are settled are included in the CGAC of NSTAR Gas. NSTAR Gas records a regulatory asset or liability for the market price changes, in lieu of recording an adjustment to Other Comprehensive Income. These derivative contracts extend through April 2012. As of March 31, 2011, these natural gas hedging agreements, representing seventeen individual contracts, hedged 4,790 BBtu. The settlement of these contracts may have a short-term cash flow impact. Over the long-term, any such effects are mitigated by a regulatory recovery

mechanism for those costs. During the three-month periods ended March 31, 2011 and 2010, $7.2 million and $3.1 million, respectively, of these financial contracts were settled and were recognized as additional charges to “Cost of gas sold” on the accompanying Consolidated Statements of Income.

Potential counterparty credit risk is minimized by collateral requirements as specified in credit support agreements to the contracts that are based on the credit rating of the counterparty and the fair value exposure under each contract’s term. In the event of a downgrade in the credit rating of either party, these agreements may require that party to immediately collateralize, by either cash payment, letter of credit, or other qualifying security instrument, any exposure that exists for obligations in excess of specified threshold amounts.

NSTAR Gas is also subject to this credit risk-related contingent feature. Based on market conditions at the time of a downgrade, NSTAR Gas could be required to post collateral in an amount that could be equal to or less than the fair value of the liability at the time of the downgrade. As of March 31, 2011, NSTAR Gas has an A+ Standard & Poors Credit Issuer credit rating. Collateral obligations are required in the event of a downgrade below an A rating by Standard & Poors and/or if the fair value of the contract exceeds established credit thresholds. Based on NSTAR Gas’ liability position with its natural gas hedge contract counterparties as of March 31, 2011, should NSTAR Gas’ credit rating be downgraded the collateral obligations described below would result.


Credit Ratings Downgraded to:	Level Below “A” Rating		Incremental Obligations		Cumulative Obligations
(in thousands)
A-/A3		1	$	—	$	—
BBB+/Baa1		2		—		—
BBB/Baa2		3		—		—
BBB-/Baa3, or below investment grade		4		700		700

In addition, these agreements contain cross-default provisions that would allow NSTAR Gas and its counterparties to terminate and liquidate a natural gas hedge contract if either party is in default on other swap agreements with that same counterparty, or another unrelated agreement with that same counterparty in excess of stipulated threshold amounts.

Derivative Instruments and Hedging Activities

The following disclosures summarize the fair value of NSTAR Gas’ hedging agreements and NSTAR Electric’s renewable energy contracts deemed to be derivatives, the balance sheet positions of these agreements and the related settlements of hedging agreements:


(in thousands)	March 31, 2011			December 31, 2010

Gas Hedging Agreements asset (liability) positions
Consolidated Balance Sheet Account:
Deferred debits – Other deferred debits	$	—		$	179
Current liabilities – Power contract obligations		(700	)		(6,646	)

Total net liability for derivative instruments	$	(700	)	$	(6,467	)


Renewable Energy Contract – Non-hedging instrument
Consolidated Balance Sheet Account:
Deferred credits and other liabilities – Power contract obligations	$	(2,067	)	$	(2,400	)

Total liability for non-hedging derivative instrument	$	(2,067	)	$	(2,400	)


(in thousands)	Amount of Gain or (Loss) Recognized Three Months Ended March 31,
Settlement of Gas Hedging Agreements	2011			2010
Consolidated Statement of Income Account:
Increase to Cost of gas sold	$	(7,196	)	$	(3,051	)
Increase to Operating revenues reflecting recovery of settlements from customers		7,196			3,051

Net earnings impact	$	—		$	—

Note D. Income Taxes

Effective Tax Rate

The following table reconciles the statutory federal income tax rate to the annual estimated effective income tax rate for 2011 and the actual effective income tax rate for the year ended December 31, 2010:


	2011			2010
Statutory tax rate		35	%		35	%
State income tax, net of federal income tax benefit		4			4
Impact of IRS settlement		—			3
Other		(1	)		(1	)

Effective tax rate		38	%		41	%

Receipt of Federal Tax Refund for 2001-2007 Tax Years

On September 30, 2010, NSTAR accepted a settlement offer from the IRS Office of Appeals on issues related to its 2001-2007 Federal income tax returns. NSTAR received notification on January 3, 2011 that the Joint Committee approved the Settlement Agreement. On April 21, 2011, NSTAR received a $143.3 million refund payment from the IRS, relating to the 2001-2007 tax years. The approved settlement and receipt of the refund resolves all outstanding tax matters for these years.

Open Tax Years

The 2008 and 2009 Federal income tax returns have been examined under the IRS Compliance Assurance Process (CAP) with no adjustments. The 2010 Federal income tax return is being reviewed under CAP. This program accelerates the examination of the return in an attempt to resolve issues before the tax return is filed. The outcome of any potential audit adjustments and the timing are uncertain.

Uncertain Tax Positions

NSTAR did not have a reserve for uncertain tax positions at March 31, 2011 and December 31, 2010.

Interest on Tax Positions

The total amount of accrued interest receivable related to tax matters included in “Other current assets” on the accompanying Consolidated Balance Sheets was as follows:


	March 31,		December 31,
(in millions)	2011		2010
Accrued tax interest receivable	$	27.9	$	27.6

Substantially all of the $27.9 million in accrued tax interest receivable at March 31, 2011 was collected in the April 21, 2011 payment from the IRS.

Note E. Earnings Per Common Share

Basic EPS is calculated by dividing net income attributable to common shareholders, which includes a deduction for preferred dividends of a subsidiary, by the weighted average common shares outstanding during the respective period. Diluted EPS is similar to the computation of basic EPS except that the weighted average common shares are increased to include the impact of potential (nonvested) shares and stock options granted (stock-based compensation) in accordance with NSTAR’s Long Term Incentive Plan.

The following table summarizes basic and diluted EPS:


	Three Months Ended March 31,
(in thousands, except per share amounts)	2011		2010
Net income attributable to common shareholders	$	56,411	$	59,718
Basic and Diluted EPS:
Continuing operations	$	0.54	$	0.51
Discontinued operations		—		0.05

Total earnings	$	0.54	$	0.56


Weighted average common shares outstanding for basic EPS		103,587		106,808
Effect of dilutive shares:
Weighted average dilutive potential common shares		388		222

Weighted average common shares outstanding for diluted EPS		103,975		107,030

Note F. Segment and Related Information

For the purpose of providing segment information, NSTAR’s principal operating segments are its traditional core businesses of electric and gas retail transmission and distribution utilities that provide energy delivery services in 107 cities and towns in Massachusetts.

NSTAR has aggregated the results of operations and assets of its telecommunications subsidiary with the electric utility operations, and aggregated the liquefied natural gas service subsidiary with gas utility operations. The telecommunications subsidiary, liquefied natural gas service subsidiary and MATEP were previously aggregated as unregulated operations for purposes of segment reporting. The segment presentation now reflects the ongoing profile of NSTAR’s operations as primarily comprised of electric and gas utility operations.

Amounts related to discontinued operations have been excluded from the data presented. Amounts shown on the following table for the three months ended March 31, 2011 and 2010 include the allocation of NSTAR’s (Holding Company) results of operations and assets to the two business segments, net of inter-company transactions that primarily consist of interest charges and investment assets, respectively. The allocation of Holding Company charges is based on an indirect allocation of the Holding Company’s investment relating to the two business segments.

Financial data for the segments of continuing operations were as follows:


	Utility Operations				Consolidated
(in thousands)	Electric		Gas		Total
Three months ended March 31,
2011
Operating revenues	$	602,500	$	190,198	$	792,698
Segment net income	$	39,979	$	16,922	$	56,901
2010
Operating revenues	$	584,900	$	182,568	$	767,468
Segment net income	$	39,582	$	15,340	$	54,922

Total assets
March 31, 2011	$	7,004,550	$	834,878	$	7,839,428
December 31, 2010	$	7,040,326	$	893,599	$	7,933,925

Note G. Fair Value Measurements

NSTAR follows a fair value hierarchy that prioritizes the inputs used to determine fair value and requires the Company to classify assets and liabilities carried at fair value based on the observability of these inputs. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The three levels of the fair value hierarchy are:

Level 1 – Unadjusted quoted prices available in active markets for identical assets or liabilities as of the reporting date. Financial assets utilizing Level 1 inputs include active exchange-traded equity securities.

Level 2 – Quoted prices available in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, inputs other than quoted prices that are directly observable, and inputs derived principally from market data.

Level 3 – Unobservable inputs from objective sources. These inputs may be based on entity-specific inputs. Level 3 inputs include all inputs that do not meet the requirements of Level 1 or Level 2.

Gas hedges were valued at calculated settlement prices. The renewable energy contract was valued based on the difference between the contracted price and the estimated fair value of remaining contracted supply to be purchased. Inputs used to develop the estimate included on-line regional generation and forecasted demand.

The following represents the fair value hierarchy of NSTAR’s financial assets and liabilities that were recognized at fair value on a recurring basis as of March 31, 2011 and December 31, 2010. Financial assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurement.

Recurring Fair Value Measures:


	March 31, 2011
(in millions)	Level 1		Level 2		Level 3		Total
Assets:
Government Money Market Securities^(a)	$	1	$	—	$	—	$	1
Deferred Compensation Assets ⁽^b⁾		30		—		—		30
Investments ⁽^b⁾		11		—		—		11

Total	$	42	$	—	$	—	$	42


Liabilities:
Gas Hedges ⁽^c⁾	$	—	$	1	$	—	$	1
Renewable Energy Contract ⁽^d⁾		—		—		2		2

Total	$	—	$	1	$	2	$	3


	December 31, 2010
(in millions)	Level 1		Level 2		Level 3		Total
Assets:
Government Money Market Securities^(a)	$	1	$	—	$	—	$	1
Deferred Compensation Assets ⁽^b⁾		30		—		—		30
Investments ⁽^b⁾		11		—		—		11

Total	$	42	$	—	$	—	$	42


Liabilities:
Gas Hedges ⁽^c⁾	$	—	$	6	$	—	$	6
Renewable Energy Contract ^(d)		—		—		2		2

Total	$	—	$	6	$	2	$	8


(a)	-	Included in “Cash and cash equivalents” on the accompanying Consolidated Balance Sheets
(b)	-	Included in “Other investments” on the accompanying Consolidated Balance Sheets
(c)	-	Included in “Deferred debits: Other deferred debits” and “Current liabilities: Power contract obligations” on the accompanying Balance Sheets
(d)	-	Included in “Deferred credits and other liabilities: Power contract obligations” on the accompanying Consolidated Balance Sheets

Fair Value of Financial Instruments

The carrying amounts for cash and cash equivalents, net accounts receivable, other current assets, certain current liabilities, and notes payable as of March 31, 2011 and December 31, 2010, respectively, approximate fair value due to the short-term nature of these securities.

The fair values of long-term indebtedness (excluding notes payable, including current maturities) are based on the quoted market prices of similar issues. Carrying amounts and fair values as of March 31, 2011 and December 31, 2010 were as follows:


	March 31, 2011				December 31, 2010
(in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term indebtedness of continuing operations (including current maturities)	$	2,327,338	$	2,483,780	$	2,348,925	$	2,545,200

Note H. Commitments and Contingencies

1. Service Quality Indicators

SQI are established performance benchmarks for certain identified measures of service quality relating to customer service and billing performance, safety and reliability and DPU Consumer Division statistics performance for all Massachusetts utilities. NSTAR Electric and NSTAR Gas are required to report annually to the DPU concerning their performance as to each measure and are subject to maximum penalties of up to two and one-half percent of total transmission and distribution revenues should performance fail to meet the applicable benchmarks.

NSTAR monitors its service quality continuously, and if it is probable that a liability has been incurred and is estimable, a liability is accrued. Any settlement or rate order that would result in a different liability level from what has been accrued would be adjusted in the period that the DPU issues an order determining the amount of any such liability.

NSTAR Electric and NSTAR Gas service quality performance levels for 2010 were not in a penalty situation and the final performance reports were filed with the DPU on March 1, 2011.

2. Environmental Matters

NSTAR subsidiaries face possible liabilities as a result of involvement in several multi-party disposal sites, state-regulated sites or third party claims associated with contamination remediation. NSTAR generally expects to have only a small percentage of the total potential liability for the majority of these sites. As of March 31, 2011 and December 31, 2010, NSTAR had liabilities of $0.9 million for these environmental sites. This estimated recorded liability is based on an evaluation of all currently available facts with respect to these sites.

NSTAR Gas is participating in the assessment or remediation of certain former MGP sites and alleged MGP waste disposal sites to determine if and to what extent such sites have been contaminated and whether NSTAR Gas may be responsible to undertake remedial action. The DPU permits recovery of costs associated with MGP sites over a 7-year period, without carrying costs. As of March 31, 2011 and December 31, 2010, NSTAR had liabilities of $15.9 million as an estimate for site cleanup costs for several MGP sites for which NSTAR Gas was identified as a potentially responsible party. A corresponding regulatory asset was recorded that reflects the future rate recovery for these costs.

Estimates related to environmental remediation costs are reviewed and adjusted as further investigation and assignment of responsibility occurs and as either additional sites are identified or NSTAR’s responsibilities for such sites evolve or are resolved. NSTAR’s ultimate liability for future environmental remediation costs may vary from these estimates. Based on NSTAR’s current assessment of its environmental responsibilities, existing legal requirements, and regulatory policies, NSTAR does not believe that these environmental remediation costs will have a material adverse effect on NSTAR’s consolidated results of operations, financial position, or cash flows.

3. Regulatory Proceedings

DPU Safety and Reliability Programs (CPSL)

As part of the Rate Settlement Agreement, NSTAR Electric is allowed to recover incremental costs related to the double pole inspection, replacement/restoration and transfer program and the underground electric safety program, which includes stray-voltage remediation and manhole inspections, repairs, and upgrades. Recovery of these Capital Program Scheduling List (CPSL) billed costs is subject to DPU review and approval. From 2006 through 2010, NSTAR Electric incurred and billed cumulative incremental revenue requirements of approximately $67 million. During 2011, approximately $3.5 million has been incurred through March 31. These amounts include incremental operations and maintenance and revenue requirements on capital investments.

On May 28, 2010, the DPU issued an order on NSTAR Electric’s 2006 CPSL costs recovery filing. The expected recovery amount did not vary materially from the revenue previously recognized. On October 8, 2010, NSTAR Electric submitted a Compliance Filing with the DPU reconciling the recoverable CPSL Program revenue requirement for each year 2006 through 2009 with the revenues already collected to determine the proposed adjustment effective on January 1, 2011. The DPU allowed the proposed rates to go into effect on that date, subject to reconciliation of program costs. NSTAR cannot predict the timing of subsequent DPU orders related to this filing. Should an adverse DPU decision be issued, it could have a material adverse impact on NSTAR’s result of operations, financial position, and cash flows.

Basic Service Bad Debt Adder

On July 1, 2005, in response to a generic DPU order that required electric utilities in Massachusetts to recover the energy-related portion of bad debt costs in their Basic Service rates, NSTAR Electric increased its Basic Service rates and reduced its distribution rates for those bad debt costs. In furtherance of this generic DPU order, NSTAR Electric included a bad debt cost recovery mechanism as a component of its Rate Settlement Agreement. This recovery mechanism (bad debt adder) allows NSTAR Electric to recover its Basic Service bad debt costs on a fully reconciling basis. These rates were implemented, effective January 1, 2006, as part of NSTAR Electric’s Rate Settlement Agreement.

On February 7, 2007, NSTAR Electric filed its 2006 Basic Service reconciliation with the DPU proposing an adjustment related to the increase of its Basic Service bad debt charge-offs. This proposed rate adjustment was anticipated to be implemented effective July 1, 2007. On June 28, 2007, the DPU issued an order approving the implementation of a revised Basic Service rate. However, the DPU instructed NSTAR Electric to reduce distribution rates by the increase in its Basic Service bad debt charge-offs. Such action would result in a further reduction to distribution rates from the adjustment NSTAR Electric made when it implemented the Settlement Agreement. This adjustment to NSTAR Electric’s distribution rates would eliminate the fully reconciling nature of the Basic Service bad debt adder.

NSTAR Electric has not implemented the directives of the June 28, 2007 DPU order. Implementation of this order would require NSTAR Electric to write-off a previously recorded regulatory asset related to its Basic Service bad debt costs. NSTAR Electric filed a Motion for Reconsideration of the DPU’s order on July 18, 2007. On May 28, 2010, the DPU issued an order and reaffirmed that NSTAR Electric should reduce its distribution rates by the increase in its Basic Service bad debt charge-offs. On June 18, 2010, NSTAR Electric filed an appeal of the DPU’s order with the Massachusetts Supreme Judicial Court (SJC). A decision by the SJC is expected in late 2011. As of March 31, 2011, the potential pre-tax impact to earnings of eliminating the bad debt adder would be approximately $23 million. NSTAR cannot predict the timing of this appeals process. NSTAR Electric continues to believe that its position is appropriate and that it is probable upon appeal that it will ultimately prevail.

Other

In the fourth quarter of each year, NSTAR Electric files proposed distribution rate adjustments for effect on the following January 1. These rate adjustments include a SIP rate factor and several other fully reconciling cost recovery items. Consistent with previous filings, the 2010 filings include a combination of actual and forecasted data for 2010 that NSTAR Electric will update during 2011 with year-end data to allow a final investigation and reconciliation. There are several case years that remain outstanding at the DPU. These cases are pending decisions at the DPU and NSTAR cannot predict the timing or the ultimate outcome of these filings.

4. Yankee Companies Spent Fuel Litigation

In October 2006, the U.S. Court of Federal Claims issued a judgment in a spent nuclear fuel litigation in the amounts of $34.2 million, $32.9 million, and $75.8 million for CY, YA, and MY, respectively. This judgment in favor of the Yankee Companies relates to the alleged failure of the Department of Energy (DOE) to provide for a permanent facility to store spent nuclear fuel for years prior to 2001 for CY and YA, and prior to 2002 for MY (DOE Phase I Damages). NSTAR Electric’s portion of the Phase I judgments

amounts to $4.8 million, $4.6 million, and $3 million, respectively. The DOE appealed this decision to the United States Court of Appeals for the Federal Circuit that affirmed in part and reversed in part the awards of the earlier Phase I judgments. The Court of Federal Claims issued a decision on remand on September 7, 2010, which determined that the net damage awards are to be amended against the DOE in the amounts of $39.7 million, $21.2 million, and $81.7 million for CY, YA, and MY, respectively. NSTAR Electric’s portion of the appealed judgments amounts to $5.6 million, $3 million, and $3.3 million, respectively. The DOE filed notice of its appeal of the decision on remand to the United States Court of Appeals for the Federal Circuit on November 8, 2010, and the Yankee Companies filed their notice of cross-appeal on a limited issue on November 19, 2010. The DOE’s brief on appeal was filed February 4, 2011. A final decision on this appeal could be received by March 2012.

On July 1, 2009, the Yankee Companies filed for additional damages related to the alleged failure of the DOE to provide for a permanent facility to store spent nuclear fuel for the years from January 2002 through December 2008 for CY and YA, and from January 2003 through December 2008 for MY (DOE Phase II Damages). This phase of the spent nuclear fuel litigation specifies damages in the amounts of $135.4 million, $86.1 million, and $43 million for CY, YA, and MY, respectively. Claim amounts applicable to NSTAR Electric are $19 million, $12 million, and $1.7 million, respectively.

NSTAR cannot predict the ultimate outcome of these pending decisions for trial, appeal or the potential subsequent complaints. However, should the Yankee Companies ultimately prevail, NSTAR Electric’s share of the proceeds received would be refunded to its customers.

5. Legal Matters

In the normal course of its business, NSTAR and its subsidiaries are involved in certain legal matters, including civil litigation. Management is unable to fully determine a range of reasonably possible court-ordered damages, settlement amounts, and related litigation costs (“legal liabilities”) that would be in excess of amounts accrued and amounts covered by insurance. Based on the information currently available, NSTAR does not believe that it is probable that any such legal liabilities will have a material impact on its consolidated financial position. However, it is reasonably possible that additional legal liabilities that may result from changes in circumstances could have a material impact on its results of operations, financial condition, and cash flows.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations (MD&A)

The accompanying MD&A focuses on factors that had a material effect on the financial condition, results of operations, and cash flows of NSTAR during the periods presented and should be read in conjunction with the accompanying consolidated financial statements and related notes, and with the MD&A in NSTAR’s 2010 Annual Report on Form 10-K.

Pending Merger with Northeast Utilities

Regulatory Approvals on Pending Merger with Northeast Utilities

Federal

Massachusetts

Connecticut

In November 2010, the DPUC issued a draft decision finding that it lacks jurisdiction to consider the NSTAR merger with NU. In December 2010, the OCC petitioned the DPUC to reconsider its draft decision. On January 26, 2011, the DPUC issued an Administrative Order stating that it would hold a hearing on the question of jurisdiction. In February 2011, oral arguments were held and in March 2011, a public information session on the merger was held. No date has been established for a final decision. In addition, legislation proposing to give the DPUC jurisdiction over the merger received a joint favorable recommendation from the Connecticut Joint Legislative Energy and Technology Committee in March 2011.

New Hampshire

On April 5, 2011, the New Hampshire Public Utilities Commission (NHPUC) issued an order finding that it does not have statutory authority to approve or reject the merger.

Maine

Business Overview

NSTAR (or the Company) is a holding company engaged through its subsidiaries in the energy delivery business serving approximately 1.4 million customers in Massachusetts, including approximately 1.1 million electric distribution customers in 81 communities and approximately 300,000 natural gas distribution customers in 51 communities. NSTAR’s core business is a traditional “pipes and wires” company with a continuing focus on shareholder value and a continued commitment for safe and reliable energy delivery to customers. NSTAR also focuses on providing accurate information and other helpful assistance to its customers, thereby providing a superior customer experience. NSTAR’s strategy is to invest in transmission and distribution assets that will align with its core competencies.

Electric operations. For the three-months ended March 31, 2011, NSTAR derived 76% of its operating revenues from the transmission and distribution of electric energy through NSTAR Electric.

Gas operations. For the three-months ended March 31, 2011, NSTAR derived 24% of its operating revenues from the distribution of natural gas through NSTAR Gas.

Earnings. NSTAR derives its operating revenues primarily from the sale of energy, distribution, transmission and energy efficiency services to customers. NSTAR’s earnings are impacted by fluctuations in unit sales of electric kWh and natural gas MMbtu, which have an effect on the level of distribution and transmission revenues recognized. In accordance with the regulatory rate structure in which NSTAR operates, its recovery of energy costs are fully reconciled with the level of energy revenues currently recorded and, therefore, do not have an impact on earnings. As a result of this rate structure, any variability in the cost of energy supply purchased will have an impact on purchased power and transmission and cost of gas sold expenses, but will not affect the Company’s net income as the Company recognizes a corresponding change in revenues.

Net income attributable to common shareholders for the three-month period ended March 31, 2011, was $56.4 million or $0.54 per diluted share, as compared to $59.7 million, or $0.56 per diluted share, for the same period in 2010, as further explained below. The current quarter includes a net charge of $4.8 million, or $0.05 per share, for costs associated with the pending merger with Northeast Utilities. Excluding this item, earnings were $61.2 million, or $0.59 per diluted share.

Critical Accounting Policies and Estimates

For a complete discussion of critical accounting policies, refer to “Critical Accounting Policies and Estimates” in Item 7 of NSTAR’s 2010 Form 10-K. There have been no substantive changes to those policies and estimates.

Rate and Regulatory Proceedings

Rate Structures

a. Rate Settlement Agreement

NSTAR Electric is operating under a DPU-approved Rate Settlement Agreement (Rate Settlement Agreement) that expires December 31, 2012. From 2007 through 2012, the Rate Settlement Agreement establishes for NSTAR Electric, among other things, annual inflation-adjusted distribution rates that are generally offset by an equal and corresponding reduction in transition rates. The rates as of January 1 were as follows:


	January 1,
	2011			2010			2009			2008
Annual inflation-adjusted distribution rate – SIP (decrease) increase		(0.19	)%		1.32	%		1.74	%		2.68	%

b. Regulated Electric Distribution Rates

Retail electric delivery rates are established by the DPU and are comprised of:

•

a distribution charge, which includes a fixed customer charge and a demand and/or energy charge (to collect the costs of building and expanding the infrastructure to deliver power to its destination, as well as ongoing operating costs and certain DPU-approved safety and reliability programs costs), a Pension and PBOP Rate Adjustment Mechanism (PAM) to recover incremental pension and pension benefit costs, a reconciling rate adjustment mechanism to recover costs associated with the residential assistance adjustment clause, a net-metering reconciliation surcharge to collect the lost revenues and credits associated with net-metering facilities installed by customers, and an Energy Efficiency Reconciling Factor (EERF) to recover energy efficiency expenditures in addition to those charges recovered in the energy conservation charge;

•

a basic service charge represents the collection of energy costs, including costs related to charge-offs of uncollected energy costs, through DPU-approved rate mechanisms. Electric distribution companies in Massachusetts are required to obtain and resell power to retail customers through Basic Service for those who choose not to buy energy from a competitive energy supplier. Basic Service rates are reset every six months (every three months for large commercial and industrial customers). The price of Basic Service is intended to reflect the average competitive market price for electric power;

•

a transition charge represents the collection of costs to be collected primarily from previously held investments in generating plants and costs related to existing above-market power contracts, and contract costs related to long-term power contracts buy-outs;

•

a transmission charge represents the collection of annual costs of moving the electricity over high voltage lines from generating plants to substations located within NSTAR’s service area including costs allocated to NSTAR Electric by ISO-NE to maintain the wholesale electric market;

•

an energy conservation charge represents a legislatively-mandated charge to collect costs for energy efficiency programs; and

•

a renewable energy charge represents a legislatively-mandated charge to collect the costs to support the development and promotion of renewable energy projects.

c. Gas Rates

NSTAR Gas generates revenues primarily through the sale and/or transportation of natural gas. Gas sales and transportation services are divided into two categories: firm, whereby NSTAR Gas must supply gas and/or transportation services to customers on demand; and interruptible, whereby NSTAR Gas may, generally during colder months, temporarily discontinue service to high volume commercial and industrial customers. Sales and transportation of gas to interruptible customers have no impact on NSTAR Gas’ operating income because a substantial portion of the margin for such service is returned to its firm customers as rate reductions.

Retail natural gas delivery and supply rates are established by the DPU and are comprised of:

•

a distribution charge consists of a fixed customer charge and a demand and/or energy charge that collects the costs of building and expanding the natural gas infrastructure to deliver natural gas supply to its customers’ destination. This also includes collection of ongoing operating costs;

•

a seasonal cost of gas adjustment clause (CGAC) represents the collection of natural gas supply costs, pipeline and storage capacity, costs related to charge-offs of uncollected energy costs and working capital related costs. The CGAC is reset every six months. In addition, NSTAR Gas files interim changes to its CGAC factor when the actual costs of natural gas supply vary from projections by more than 5%; and

•

a local distribution adjustment clause (LDAC) primarily represents the collection of energy efficiency program costs, environmental costs, PAM related costs, and costs associated with the residential assistance adjustment clause. The LDAC is reset annually and provides for the recovery of certain costs applicable to both sales and transportation customers.

NSTAR Gas purchases financial contracts based on NYMEX natural gas futures in order to reduce cash flow variability associated with the purchase price for approximately one-third of its natural gas purchases. This practice attempts to minimize the impact of fluctuations in prices to NSTAR’s firm gas customers. These financial contracts do not procure natural gas supply. All costs incurred or benefits realized when these contracts are settled are included in the CGAC.

d. Regulatory Matters

DPU Safety and Reliability Programs (CPSL)

Basic Service Bad Debt Adder

reduce its distribution rates by the increase in its Basic Service bad debt charge-offs. On June 18, 2010, NSTAR Electric filed an appeal of the DPU’s order with the Massachusetts Supreme Judicial Court (SJC). A decision by the SJC is expected in late 2011. As of March 31, 2011, the potential pre-tax impact to earnings of eliminating the bad debt adder would be approximately $23 million. NSTAR cannot predict the timing of this appeals process. NSTAR Electric continues to believe that its position is appropriate and that it is probable upon appeal that it will ultimately prevail.

Other

FERC Transmission ROE

NSTAR earns an 11.14% ROE on local transmission facility investments. The ROE on NSTAR’s regional transmission facilities is 11.64%. Additional incentive adders are available and are decided on a case-by-case basis in accordance with the FERC’s most recent national transmission incentive rules. The FERC may grant a variety of financial incentives, including ROE basis point incentive adders for qualified investments made in new regional transmission facilities. A 100 basis point adder, when combined with the FERC’s approved ROEs described above, results in a 12.64% ROE for qualified regional investments. The incentive is intended to promote and accelerate investment in transmission projects that can significantly reduce congestion costs and enhance reliability in the region.

Other

a. Energy Efficiency Plans

NSTAR Electric and NSTAR Gas administer demand-side management energy efficiency programs. The Massachusetts Green Communities Act (GCA) directs electric and natural gas distribution companies to develop three-year energy efficiency plans. The first three-year plan covering the period 2010 through 2012 was approved by the DPU and is expected to lead to a significant expansion of energy efficiency activity in Massachusetts. Like the historical programs, the new three-year plan includes financial incentives based on energy efficiency program performance. In addition, the DPU has stated that it will permit distribution companies that do not yet have rate decoupling mechanisms in place to implement lost base revenue rate adjustment mechanisms that will partially offset reduced distribution rate revenues as a result of successful energy efficiency programs.

During the first quarter of 2011, NSTAR Electric and NSTAR Gas incurred Energy Efficiency expenses of $40.1 million and $3.5 million, respectively, inclusive of program administrator incentives. NSTAR Electric and NSTAR Gas have filed their separate 2011 Energy Efficiency Plans and anticipate that the programs will amount to about $184.3 million and $20.1 million in spending, inclusive of program administrator incentives, respectively.

b. Northern Pass Transmission Project

On October 4, 2010, Northern Pass Transmission LLC (NPT) and H.Q. Hydro Renewable Energy, Inc. (Hydro Renewable Energy), an indirect, wholly-owned subsidiary of Hydro-Québec, entered into a Transmission Service Agreement (the TSA) in connection with the Northern Pass transmission project. NPT is a joint venture indirectly owned by NU and NSTAR, on a 75 percent and 25 percent basis, respectively. The “NPT Line” will be a new high voltage direct current (HVDC) transmission line from the Canadian

border to southern New Hampshire and an associated alternating current radial transmission line from Franklin, New Hampshire to Deerfield, New Hampshire to be constructed by NPT. It will interconnect at the U.S.-Canadian border with a new HVDC transmission line to be constructed in Québec by Hydro-Québec TransÉnergie, the transmission division of Hydro-Québec. Pursuant to the TSA, NPT will sell firm electric transmission rights to Hydro Renewable Energy over the 1,200 megawatt NPT Line for a forty-year term. The TSA was approved by the FERC on February 14, 2011 with no exceptions.

NPT will charge cost-based rates to Hydro Renewable Energy under the TSA for firm transmission service using a FERC approved formula rate. The projected cost-of-service calculation includes a return on equity (ROE) of 12.56 percent through the construction phase of the project, after which the ROE will be tied to the ISO-New England regional rates base ROE (which is currently 11.14 percent) plus 142 basis points. The TSA rates will be based on a deemed capital structure for NPT of 50 percent debt and 50 percent equity. During the development phase and the construction phase under the TSA, NPT will be recording non-cash Allowance for Funds Used During Construction (AFUDC) earnings.

In October 2010, NPT filed the NPT Line project design with ISO-New England Inc. for technical approval and filed a Presidential Permit application with the U.S. Department of Energy (DOE), which seeks permission to construct and maintain facilities that cross the Québec and New Hampshire border and connect to the HQ TransÉnergie facilities in Québec.

During March 2011, the DOE held public meetings in New Hampshire seeking a public comment on NPT. In response to concerns raised at those meetings, on April 12, 2011, NPT revised its Presidential Permit application with the DOE. NPT requested and received an additional 60 days for the public comment period to allow NPT to review other routes and certain proposed alternative routes were withdrawn from consideration. NPT anticipates filing additional state and federal permit and siting applications in 2011. Assuming timely siting approvals, NPT expects to commence construction of the line in 2013, with completion in late 2015. The estimated project costs are approximately $1.1 billion. NSTAR’s share of the NPT Line costs will total approximately $280 million (including capitalized AFUDC and property taxes).

On March 30, 2011, the New Hampshire House of Representatives approved House Bill 648, which would preclude non-reliability projects, such as NPT, from using eminent domain to acquire property for construction of transmission lines. The legislation is pending in the New Hampshire Senate. NPT believes that it will be able to acquire necessary property rights for the NPT Line.

Results of Continuing Operations

The following section of MD&A compares the results of continuing operations for each of the three-month periods ended March 31, 2011 and 2010 and should be read in conjunction with the accompanying Consolidated Financial Statements and the accompanying Notes to Consolidated Financial Statements included elsewhere in this report.

Earnings Outlook

NSTAR is maintaining its 2011 earnings guidance range of between $2.60 and $2.75 per share on a stand-alone basis. This range excludes merger-related costs. NSTAR reaffirms its expectation that the pending merger with Northeast Utilities will close in the second half of 2011. Detailed earnings guidance on the combined company will be provided at that time.

Common Share Dividends

NSTAR’s current quarterly cash dividend rate is $0.425 per share or $1.70 per share on an annualized basis. On March 24, 2011, NSTAR’s Board of Trustees declared a quarterly cash dividend of $0.425 per share to shareholders of record on April 8, 2011, payable May 2, 2011.

Three Months Ended March 31, 2011 compared to Three Months Ended March 31, 2010

Executive Summary of Quarterly Results

Earnings per common share were as follows:


	Three Months Ended March 31,
	2011			2010		% Change
Basic and Diluted – Continuing operations	$	0.59		$	0.51		15.7	%
Basic and Diluted – Income from discontinued operations		—			0.05		—

		0.59			0.56		5.4	%
Basic and Diluted – Merger-related costs, net		(0.05	)		—		—

Basic and Diluted – Total earnings	$	0.54		$	0.56		(3.6	)%

Net income attributable to common shareholders was $56.4 million, or $0.54 per diluted share, for the quarter ended March 31, 2011 compared to $59.7 million, or $0.56 per diluted share, for the same period in 2010. The current quarter includes a net charge of $4.8 million, or $0.05 per share, for costs associated with the pending merger with Northeast Utilities. Excluding these costs, earnings were $61.2 million, or $0.59 per diluted share. Major factors on an after-tax basis that contributed to the $1.5 million, or 2.5%, increase in earnings include:

•

Higher electric and gas distribution revenues due to a 3.1% and 10.6%, respectively, increase in sales ($8.1 million)

•

Higher transmission revenues ($1.8 million)

•

Lower net interest charges ($2.9 million)

These increases in earnings factors were partially offset by:

•

Absence of MATEP earnings due to June 2010 sale ($5.3 million)

•

Higher depreciation and property taxes ($3.6 million)

•

Higher operations and maintenance expenses ($4.1 million)

Significant cash flow events during the quarter include the following:

•

Cash flows from continuing operating activities provided approximately $134.3 million, a decrease of $3.7 million as compared to the same period in 2010. The decrease primarily reflects the timing of energy supply payments and customer collections related to these energy costs

•

NSTAR invested approximately $80.5 million in capital projects to improve system reliability and capacity

•

NSTAR paid approximately $44 million in common share dividends and retired $21.7 million in long-term and securitized debt.

Electric and Gas sales

The following is a summary of retail electric and firm gas and transportation sales for the periods indicated:


	Three Months Ended March 31,
	2011		2010		% Change
Retail Electric Sales - MWh
Residential		1,741,812		1,675,221		4.0
Commercial, Industrial, and Other		3,612,361		3,517,270		2.7

Total retail sales		5,354,173		5,192,491		3.1


Firm Gas and Transportation Sales - BBtu
Residential		10,768		9,709		10.9
Commercial and Industrial		9,251		8,404		10.1
Municipal		1,565		1,397		12.0

Total firm gas and transportation sales		21,584		19,510		10.6

NSTAR’s electric energy sales in the three months ended March 31, 2011 increased 3.1% compared to 2010 primarily due to favorable weather conditions resulting from a colder winter during 2011 as compared to 2010, and some positive impact of the economic recovery. Heating degree-days in NSTAR’s service area for the three months ended March 31, 2011 were up 11.6% from the same period in 2010.

The 10.6% increase in firm gas and transportation sales is due to the colder winter weather during 2011 as compared to the prior year.

Weather and, to a lesser extent, fluctuations in fuel costs, conservation measures, and economic conditions affect sales to NSTAR’s residential and small commercial customers. Economic conditions, fluctuations in fuel costs, and conservation measures affect NSTAR’s large commercial and industrial customers. In terms of customer sector characteristics, industrial sales are less sensitive to weather than residential and commercial sales, which are influenced by temperature variations. Refer to the “Electric Revenues” and “Gas Revenues” sections below for more detailed discussions.

Weather conditions

NSTAR forecasts its electric and natural gas sales based on normal weather conditions. Actual results may vary from those projected due to actual weather conditions, energy conservation, and other factors. Refer to the “Cautionary Statement Regarding Forward-Looking Information” section preceding Part 1 “Financial Information” of this Form 10-Q.

The demand for electricity and natural gas is affected by weather. Weather impacts electric sales primarily during the summer and, to a greater extent, natural gas sales during the winter season in NSTAR’s service area. Customer heating or cooling usage may not directly correlate with historical levels or with the level of degree-days that occur (as further discussed below), particularly when weather patterns experienced are consistently colder or warmer. Also, NSTAR’s electric and natural gas businesses are sensitive to variations in daily weather, are highly influenced by New England’s seasonal weather variations, and are susceptible to damage from major storms and other natural events and disasters that could adversely affect the Company’s ability to provide energy.

Degree-days measure changes in daily mean temperature levels. A degree-day is a unit measuring how many degrees the outdoor daily mean temperature falls below (in the case of heating) or rises above (in the case of cooling) a base of 65 degrees. As shown in the table below, weather conditions during the three-month period ended March 31, 2011 measured by heating degree-days were 11.6% higher/colder for 2011 as compared to 2010, favorably impacting gas revenues. Similarly, weather conditions were colder than the 30-year average by 4.2% during the first quarter of 2011. Refer to the “Electric Revenues” and “Gas Revenues” sections below for more detailed discussions.


Heating Degree-Days (Worcester, MA)
Three months ended March 31, 2011			3,400
Three months ended March 31, 2010			3,046
Normal 30-Year Average			3,263

Operating revenues

Operating revenues for the first quarter of 2011 increased $25.2 million, or 3.3%, from the same period in 2010 as follows:


(in millions)	Three Months Ended March 31,				Increase/(Decrease)
	2011		2010		Amount		Percent
Electric revenues
Retail distribution and transmission	$	269.9	$	252.7	$	17.2		6.8	%
Energy, transition and other		332.6		332.2		0.4		0.1	%

Total electric revenues		602.5		584.9		17.6		3.0	%
Gas revenues
Firm and transportation		67.0		60.3		6.7		11.1	%
Energy supply and other		123.2		122.3		0.9		0.7	%

Total gas revenues		190.2		182.6		7.6		4.2	%

Total operating revenues	$	792.7	$	767.5	$	25.2		3.3	%

Electric revenues

NSTAR’s largest earnings sources are the revenues derived from distribution and transmission rates approved by the DPU and the FERC. Electric retail distribution revenues primarily represent charges to customers for recovery of the Company’s capital investment, including a return component, and operation and maintenance costs related to its electric distribution infrastructure. The transmission revenue component represents charges to customers for the recovery of similar costs to move the electricity over high voltage lines from the generator to the Company’s distribution substations.

The increase of $17.2 million, or 6.8%, in retail distribution and transmission revenues primarily reflects:

•

Increased transmission revenues primarily due to the recovery of a higher transmission investment base, including higher depreciation and property taxes and recovery of higher regional network service and other costs ($5.1 million)

•

Increased distribution revenues due to increased sales of 3.1% due to the impact of weather conditions partially offset by a negative annual inflation rate adjustment ($7.4 million)

Energy, transition, and other revenues primarily represent charges to customers for the recovery of costs incurred by the Company in order to acquire the energy supply on behalf of its customers and a transition charge for recovery of the Company’s prior investments in generating plants and the costs related to long-term power contracts. The energy revenues relate to customers being provided energy supply under Basic Service. These revenues are fully reconciled to the costs incurred and have no impact on NSTAR’s consolidated net income. Energy, transition, and other revenues also reflect revenues related to the Company’s ability to effectively reduce stranded costs (incentive entitlements), rental revenue from electric property, and annual cost reconciliation true-up adjustments. The $0.4 million, or 0.1%, increase in energy, transition, and other revenues is primarily attributable to higher energy efficiency revenues due to the expansion of the these programs, partially offset by lower Basic Service rates in effect due to lower energy costs. Uncollected transition costs as a result of the reductions in transition rates are deferred and collected through future rates with a carrying charge.

Gas Revenues

Firm and transportation gas revenues primarily represent charges to customers for the Company’s recovery of costs of its capital investment in gas infrastructure, including a return component, and for the recovery of costs for the ongoing operation and maintenance of that infrastructure. The transportation revenue component represents charges to customers for the recovery of costs to move the natural gas over pipelines from gas suppliers to take stations located within the Company’s service area. Firm and transportation revenues increased $6.7 million, or 11.1%, primarily due to an increase in gas sales volumes of 10.6%.

Energy supply and other gas revenues primarily represent charges to customers for the recovery of costs to the Company in order to acquire the natural gas in the marketplace and a charge for recovery of the Company’s gas supplier service costs. The energy supply and other revenues increase of $0.9 million, or 0.7%, is primarily due to the 10.6% increase in gas sales volume, partially offset by a decrease in the cost of gas supply. These revenues are fully reconciled with the costs recognized by the Company and, as a result, do not have an effect on NSTAR’s consolidated net income.

Operating expenses

Purchased power and transmission expense was $279.3 million in the first quarter of 2011 compared to $283.2 million in the same period of 2010, a decrease of $3.9 million, or 1.4%. The decrease in expense reflects lower Basic Service and other energy costs of $10.6 million. These decreases were partially offset by higher transmission costs of $6.7 million due to an increase in regional network support costs. NSTAR Electric adjusts its rates to collect the costs related to energy supply from customers on a fully reconciling basis. Due to this rate adjustment mechanism, changes in the amount of energy supply expense have no impact on consolidated net income.

Cost of gas sold, representing NSTAR Gas’ supply expense, was $109 million in the first quarter of 2011 compared to $110.6 million in 2010, a decrease of $1.6 million, or 1.4%. The decrease in expense primarily reflects a decrease in natural gas supply costs. The decrease was partially offset by 10.6% higher sales and higher settlements of gas hedge contracts. NSTAR Gas maintains a flexible resource portfolio consisting of an all-requirements gas supply contract, transportation contracts on interstate pipelines, market area storage, and peaking services. NSTAR Gas adjusts its rates to collect costs related to gas supply from customers on a fully reconciling basis and therefore changes in the amount of energy supply expense have no impact on consolidated net income.

Operations and maintenance expense was $121.3 million in the first quarter of 2011 compared to $110 million in the same period of 2010, an increase of $11.3 million, or 10.3%. One significant component contributing to this increase in expense is higher pension and PBOP related PAM amortization costs ($3.6 million). Fluctuations in PAM amortization do not have an earnings impact as these costs are fully recovered from customers. Also contributing to the higher expense were storm-related expenses ($1 million), timing of maintenance ($2.5 million) and timing of certain labor-related costs ($3.4 million).

Depreciation and amortization expense was $81 million in the first quarter of 2011 compared to $93.1 million in the same period of 2010, a decrease of $12.1 million or 13%. The decrease primarily reflects the lower amortization costs related to the pay-down of securitized debt, offset by higher depreciable distribution and transmission plant-in-service.

Energy efficiency and renewable energy programs expense was $43.6 million in the first quarter of 2011 compared to $20.3 million in the same period of 2010, an increase of $23.3 million, or 114.8%. These costs are in accordance with the new three-year plan program guidelines established by the DPU and are collected from customers on a fully reconciling basis plus a performance incentive. NSTAR anticipates a further increase in Energy Efficiency spending during 2011 and in future years driven by requirements of the GCA. Those spending increases are funded partially through proceeds from the Regional Greenhouse Gas Initiative and through NSTAR’s participation in the Forward Capacity Market.

Property and other taxes expense was $34.5 million in the first quarter of 2011 compared to $31.2 million in the same period of 2010, an increase of $3.3 million, or 10.6%, reflecting higher overall property investments and higher tax rates.

Interest charges (income):

Long-term debt and transition property securitization certificate interest charges were $32.2 million in the first quarter of 2011 compared to $37.2 million in the same period of 2010, a decrease of $5 million, or 13.4%. The decrease in interest charges reflects scheduled principal pay downs of transition property securitization debt and the retirement of NSTAR’s $500 million, 8% Notes in mid-February 2010.

Interest income and other, net were $7.1 million of net interest income in the first quarter of 2011 compared to $5.9 million of net interest income in the same period of 2010, an increase of $1.2 million, or 20.3%, due to increased interest income of $1.3 million related to higher regulatory deferrals.

Other income (deductions):

Other income was $1.2 million in the first quarter of 2011 compared to $1.0 million in the same period of 2010, an increase of $0.2 million. The increase relates primarily to higher cash surrender values of insurance policies and higher equity investment earnings.

Other deductions were $6.8 million in the first quarter of 2011 compared to $0.5 million in the same period of 2010, an increase in deductions of $6.3 million primarily related to merger-related costs of $6 million.

Income tax expense:

Income tax expense was $36.4 million in the first quarter of 2011 compared to $33.3 million in the same period of 2010, an increase of $3.1 million, or 9.3%, primarily reflecting a higher pre-tax operating income in 2010.

Liquidity and Capital Resources

Financial Market Impact

Volatility and uncertainty in the financial markets may adversely impact the availability of credit and the cost of credit to NSTAR and its subsidiary companies. However, throughout this period of market uncertainty, NSTAR has been able to successfully access capital markets to issue long-term debt and also to facilitate short-term financing for working capital needs. NSTAR and its subsidiaries utilize the commercial paper market to meet their short-term cash requirements. NSTAR and NSTAR Electric currently have Revolving Credit Agreements in place through December 2012. These Credit Agreements serve as a liquidity backup to the commercial paper program. Short-term commercial paper debt obligations are commonly refinanced to long-term obligations with fixed-rate bonds or notes as needed or when interest rates are considered favorable. Refer to Item 1A, “Risk Factors,” in NSTAR’s Annual Report on Form 10-K for the year ended December 31, 2010, for a further discussion.

As a result of volatility in the financial markets and its impact on NSTAR’s Pension and PBOP Plan investments, NSTAR continues to evaluate the extent to which it may make additional cash contributions. Should NSTAR elect to increase its level of funding to these plans, NSTAR believes it has adequate access to capital resources to support its contributions.

Working Capital

NSTAR believes that it has adequate access to short-term credit markets to facilitate its working capital needs at favorable terms. As of March 31, 2011, NSTAR, NSTAR Electric, and NSTAR Gas had $175 million, $450 million, and $100 million, respectively, in available unused revolving credit facilities in order to meet working capital needs.

Current Cash Flow Activity

NSTAR’s primary uses of cash in the first quarter of 2011 included capital expenditures, dividend payments, and securitized debt redemptions. NSTAR’s primary sources of cash in the first quarter of 2011 included cash from electric and gas operations.

Operating Activities

The net cash provided by continuing operating activities was $134.3 million in the first quarter of 2011, as compared to cash provided of $138 million in the same period of 2010, a decrease of $3.7 million primarily due to the timing of energy supply payments and their related recovery from customers.

Investing Activities

The net cash used in investing activities of continuing operations in the first quarter of 2011 was $64.9 million, compared to cash used of $82.5 million in the same period of 2010. Plant expenditures in 2011 were comparable to those in 2010. The $17.6 million decrease mainly relates to the refund of restricted cash related to a modification of the ISO-NE’s financial assurance policy whereby NSTAR Electric was released from a requirement to deposit $17 million in an escrow account.

Financing Activities

Net cash used in financing activities of continuing operations in the first quarter of 2011 was $70.5 million compared to $186.4 million in the same period of 2010. Uses of cash primarily reflect long-term and securitized debt redemptions of $21.7 million in 2011 compared to $529 million in 2010. A source of cash during 2011 included increased proceeds of short-term borrowings of $19.5 million as compared to the first quarter of 2010 that included proceeds from the issuance of long-term debt of $300 million and $125 million to NSTAR Electric and NSTAR Gas, respectively.

Income Tax Payments

During the three months ended March 31, 2011 and 2010, NSTAR made income tax payments of $14.1 million and $11.4 million, respectively.

Receipt of Federal Tax Refund for 2001-2007 Tax Years

On September 30, 2010, NSTAR accepted a settlement offer from the IRS Office of Appeals on issues related to its 2001-2007 Federal income tax returns. NSTAR received notification on January 3, 2011 that the Joint Committee had accepted the Settlement Agreement. On April 21, 2011, NSTAR received a $143.3 million refund payment from the IRS, relating to the 2001-2007 tax years. The approved settlement and receipt of the refund resolves all outstanding tax matters for these years.

Sources of Additional Capital and Financial Covenant Requirements

With the exception of bond indemnity agreements and gas hedging agreements, NSTAR has no financial guarantees, commitments, debt or lease agreements that would require a change in terms and conditions, such as acceleration of payment obligations, as a result of a change in its credit rating. However, in addition to the bond indemnity and gas hedging agreements, NSTAR’s subsidiaries could be required to provide additional security for energy supply contract performance obligations, such as a letter of credit for their pro-rata share of the remaining value of such contracts.

NSTAR and NSTAR Electric have no financial covenant requirements under their respective long-term debt arrangements. Pursuant to a revolving credit agreement, NSTAR Electric must maintain a total debt to capitalization ratio no greater than 65% at all times. The prescribed ratio is calculated excluding both Transition Property Securitization Certificates from debt and accumulated other comprehensive income (loss) from common equity. The ratio includes in debt unfunded vested benefits under postretirement benefit plans, contract liability positions (including swaps and hedges), capital lease liabilities, and corporate guarantees. NSTAR Gas must also maintain a total debt to capitalization ratio no greater than 65% at all times pursuant to its revolving credit agreement. NSTAR Gas was in compliance with its financial covenant requirements including a minimum equity requirement, under its long-term debt arrangements at March 31, 2011 and December 31, 2010. Under the minimum equity requirement, the outstanding long-term debt of NSTAR Gas must not exceed equity. NSTAR’s long-term debt other than its secured debt issued by NSTAR Gas is unsecured.

NSTAR currently has a $175 million revolving credit agreement that expires December 31, 2012. At March 31, 2011 and December 31, 2010, there were no amounts outstanding under the revolving credit agreement. This credit facility serves as a backup to NSTAR’s $175 million commercial paper program that, at March 31, 2011 and December 31, 2010, had $100.5 million and $160 million amounts outstanding, respectively. Under the terms of the credit agreement, NSTAR is required to maintain a maximum total consolidated debt to total capitalization ratio of not greater than 65% at all times. The prescribed ratio is calculated excluding both Transition Property Securitization Certificates from debt and accumulated other comprehensive income (loss) from common equity. The ratio includes in debt unfunded vested benefits under postretirement benefit plans, contract liability positions (including swaps and hedges), capital lease liabilities, and corporate guarantees. Commitment fees must be paid on the total agreement amount. At March 31, 2011 and December 31, 2010, NSTAR was in full compliance with the aforementioned covenant as the ratios were 57.1% and 56.9%, respectively.

NSTAR Electric has approval from the FERC to issue short-term debt securities from time to time on or before October 22, 2012, with maturity dates no later than October 21, 2013, in amounts such that the aggregate principal does not exceed $655 million at any one time. NSTAR Electric has a five-year, $450 million revolving credit agreement that expires December 31, 2012. However, unless NSTAR Electric receives necessary approvals from the DPU, the credit agreement will expire 364 days from the date of the first draw under the agreement. At March 31, 2011 and December 31, 2010, there were no amounts outstanding under the revolving credit agreement. This credit facility serves as backup to NSTAR Electric’s $450 million commercial paper program that had $306.5 million and $227.5 million outstanding balances at March 31, 2011 and December 31, 2010, respectively. At March 31, 2011 and December 31, 2010, NSTAR Electric was in full compliance with its covenants in connection with its short-term credit facilities, as the total debt to capitalization ratios were 47.7% and 46.6%, respectively.

As a result of the pending merger with Northeast Utilities, NSTAR and NSTAR Electric expect to seek waivers or amendments to their revolving credit agreements.

NSTAR Gas has a $100 million revolving credit facility. This facility is due to expire on December 9, 2011. As of March 31, 2011 and December 31, 2010, NSTAR Gas had no amounts outstanding. At March 31, 2011 and December 31, 2010, NSTAR Gas was in full compliance with its covenant in connection with its facility, as the total debt to capitalization ratios were 48.3% and 53.3%, respectively.

Historically, NSTAR and its subsidiaries have had a variety of external sources of financing available, as previously indicated, at favorable rates and terms to finance its external cash requirements. However, the availability of such financing at favorable rates and terms depends heavily upon prevailing market conditions and NSTAR’s or its subsidiaries’ financial condition and credit ratings.

NSTAR’s goal is to maintain a capital structure that preserves an appropriate balance between debt and equity. As of March 31, 2011, NSTAR’s subsidiaries could declare and pay dividends of up to

approximately $1.2 billion of their total common equity (approximately $2.4 billion) to NSTAR and remain in compliance with debt covenants. Based on NSTAR’s key cash resources available as previously discussed, management believes its liquidity and capital resources are sufficient to meet its current and projected cash requirements.

Commitments and Contingencies

NSTAR is exposed to certain matters as discussed in this section under the caption “Critical Accounting Policies and Estimates.”

Item 3. Quantitative and Qualitative Disclosure About Market Risk

Energy Risk Management

NSTAR’s Energy Procurement Policy governs all energy-related transactions for its regulated electric and gas subsidiaries. This Policy is reviewed annually and is administered by NSTAR’s Risk Committee. The Committee is chaired by NSTAR’s chief executive officer and includes other senior officers. Items covered by this Policy and approved by the Committee are all new energy supply transactions, authorization limits, energy related derivative and hedging transactions, and counter-party credit profiles.

Commodity and Credit Risk

Although NSTAR has material energy commodity purchase contracts, any potential market risk, including counter-party credit risk, should not have an adverse impact on NSTAR’s results of operations, cash flows, or financial position. NSTAR’s electric and gas distribution subsidiaries have rate-making mechanisms that allow for the recovery of energy supply costs from those customers who make commodity purchases from NSTAR’s electric and gas subsidiaries rather than from the competitive market supplier. All energy supply costs incurred by NSTAR Electric and NSTAR Gas in providing energy to their retail customers are recovered on a fully reconciling basis.

In addition, NSTAR has minimal cash flow risk due to the short-term nature of these contracts and the rate-making mechanisms that permit recovery of these costs in a timely manner. The majority of NSTAR’s electric and gas commodity purchase contracts range in term from three to twelve months. NSTAR Electric has the ability to seek cost recovery and adjust its rates as frequently as every three months for its large commercial and industrial customers and every six months for its residential customers. NSTAR Gas has the ability to seek cost recovery as required if costs exceed 5% of the current projected cost recovery level. Both NSTAR Electric and NSTAR Gas earn a carrying charge on under-collected commodity balances that would mitigate any incremental short-term borrowing costs. NSTAR believes it is unlikely that it would be exposed to a liquidity risk resulting from significant market price increases based on the recovery mechanisms currently in place.

To mitigate the cash flow and cost variability related to the commodity price risk on approximately one-third of its natural gas purchases, NSTAR Gas purchases financial futures contracts on behalf of its customers. NSTAR Gas has a rate-making mechanism that provides for recovery of the actual settlement value of these contracts on a fully reconciling basis. Refer to the accompanying Notes to Consolidated Financial Statements, Note C, “Derivative Instruments, Natural Gas Hedging Agreements,” for a further discussion.

Interest Rate Risk

NSTAR believes its interest risk primarily relates to short-term debt obligations and anticipated future long-term debt financing requirements to fund its capital programs. These short-term debt obligations are typically refinanced with fixed-rate long-term notes as needed and when market interest rates are favorable. At March 31, 2011 and December 31, 2010, respectively, all of NSTAR’s long-term debt had fixed interest rates. The Company is exposed to changes in interest rates primarily based on levels of short-term commercial paper outstanding. The weighted average interest rates, including fees for short-term indebtedness, were 0.35% for the three months ended March 31, 2011 and 2010. On a long-term basis, NSTAR mitigates its interest rate risk through the issuance of mostly fixed rate debt of various maturities.

Item 4. Controls and Procedures

NSTAR’s disclosure controls and procedures are designed to ensure that information required to be disclosed in reports that it files or submits under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the Securities and Exchange Commission.

As of the end of the period covered by this Quarterly Report on Form 10-Q, NSTAR carried out an evaluation, under the supervision and with the participation of NSTAR’s management, including NSTAR’s Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of NSTAR’s disclosure controls and procedures pursuant to Securities Exchange Act of 1934 Rules 13a-15(e) or 15d-15(e). Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that NSTAR’s disclosure controls and procedures were effective (1) to timely alert them to material information relating to NSTAR’s information required to be disclosed by NSTAR in the reports that it files or submits under the Securities Exchange Act of 1934 and (2) to ensure that appropriate information is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

There have been no changes in NSTAR’s internal control over financial reporting (as defined in Rules 13a-15(f) or 15d-15(f) of the Securities Exchange Act of 1934) during NSTAR’s most recently completed fiscal quarter that have materially affected, or are reasonably likely to materially affect, NSTAR’s internal control over financial reporting.

Part II. Other Information

Item 1. Legal Proceedings

In the normal course of its business, NSTAR and its subsidiaries are involved in certain legal matters, including civil litigation. Management is unable to fully determine a range of reasonably possible court-ordered damages, settlement amounts, and related litigation costs (“legal liabilities”) that would be in excess of amounts accrued and amounts covered by insurance. Based on the information currently available, NSTAR does not believe that it is probable that any such legal liability will have a material impact on its consolidated financial position. However, it is reasonably possible that additional legal liabilities that may result from changes in estimates could have a material impact on its results of operations, financial condition, or cash flows.

Item 1A. Risk Factors

Shareholders or prospective investors should carefully consider the risk factors that were previously disclosed in NSTAR’s Annual Report on Form 10-K for the year ended December 31, 2010.

Item 2(c). Unregistered Sales of Equity Securities and Use of Proceeds

Common Shares of NSTAR issued under the NSTAR Dividend Reinvestment and Direct Common Shares Purchase Plan, the Long Term Incentive Plan and the NSTAR Savings Plan may consist of newly issued shares from the Company or shares purchased on the open market by the Company or an independent agent. During the three-month period ended March 31, 2011, the shares listed below were acquired in the open market for such purposes.


	Total Number of Common Shares Purchased		Average Price Paid Per Share
January		92,748	$	42.85
February		309,804	$	44.39
March		1,957	$	45.47

Total First Quarter		404,509	$	44.04

Item 6. Exhibits


Exhibit	4	-	Instruments Defining the Rights of Security Holders, Including Indentures

		-	Management agrees to furnish to the Securities and Exchange Commission, upon request, a copy of any agreement or instrument of NSTAR and its subsidiaries defining the rights of holders of any non-registered debt whose authorization does not exceed 10% of total assets.

Exhibits filed herewith:

Exhibit	15	-	Letter Re Unaudited Interim Financial Information

	15.1		PricewaterhouseCoopers LLP Awareness Letter

Exhibit	31	-	Rule 13a - 14(a)/15d-14(a) Certifications

	31.1		Certification Statement of Chief Executive Officer of NSTAR pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

	31.2		Certification Statement of Chief Financial Officer of NSTAR pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit	32	-	Section 1350 Certifications

	32.1		Certification Statement of Chief Executive Officer of NSTAR pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

	32.2		Certification Statement of Chief Financial Officer of NSTAR pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit	99	-	Additional Exhibits

	99.1		Report of Independent Registered Public Accounting Firm*

		*	Rule 436(c) of the 1933 Act provides that a report on unaudited interim financial information shall not be considered part of a registration statement prepared or certified by an accountant or a report prepared or certified by an accountant within the meaning of Section 7 or 11 of the 1933 Act. Therefore, the accountant is not subject to the liability provisions of Section 11 of the 1933 Act.


Exhibit	101.INS	-	XBRL Instance Document

Exhibit	101.SCH	-	XBRL Taxonomy Extension Schema Document

Exhibit	101.CAL	-	XBRL Taxonomy Extension Calculation Linkbase Document

Exhibit	101.DEF	-	XBRL Taxonomy Extension Definition Linkbase Document

Exhibit	101.LAB	-	XBRL Taxonomy Extension Label Linkbase Document

SIGNATURE

Pursuant to the requirements 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.

EX-15.1 2 dex151.htm PRICEWATERHOUSECOOPERS LLP AWARENESS LETTER Pricewaterhousecoopers LLP Awareness Letter

Exhibit 15.1

May 5, 2011

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Commissioners:

We are aware that our report dated May 5, 2011 on our review of interim financial information of NSTAR for the three-month periods ended March 31, 2011 and 2010 and included in the Company’s quarterly report on Form 10-Q for the quarter ended March 31, 2011 is incorporated by reference in its Registration Statements on Form S-3 (Nos. 333-155779 and 333-162401), Form S-4 (No. 333-78285) and on Form S-8 (Nos. 333-142595, 333-160263, and 333-87272).

Very truly yours,

/s/ PRICEWATERHOUSECOOPERS LLP

PricewaterhouseCoopers LLP

EX-31.1 3 dex311.htm CERTIFICATION OF CEO PURSUANT TO SECTION 302 Certification of CEO pursuant to Section 302

Exhibit 31.1

Sarbanes - Oxley Section 302 Certification

I, Thomas J. May, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of NSTAR;

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;

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:

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;

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;

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

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):

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

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.

EX-31.2 4 dex312.htm CERTIFICATION OF CFO PURSUANT TO SECTION 302 Certification of CFO pursuant to Section 302

Exhibit 31.2

Sarbanes - Oxley Section 302 Certification

I, James J. Judge, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of NSTAR;

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;

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):

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.

EX-32.1 5 dex321.htm CERTIFICATION OF CEO PURSUANT TO SECTION 906 Certification of CEO pursuant to Section 906

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 of NSTAR (the “Company”) on Form 10-Q for the quarter ending March 31, 2011 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Thomas J. May, Chairman, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(i)	the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(ii)	the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

EX-32.2 6 dex322.htm CERTIFICATION OF CFO PURSUANT TO SECTION 906 Certification of CFO pursuant to Section 906

Exhibit 32.2

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 of NSTAR (the “Company”) on Form 10-Q for the quarter ending March 31, 2011 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, James J. Judge, Senior Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(i)	the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(ii)	the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

EX-99.1 7 dex991.htm REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM Report of Independent Registered Public Accounting Firm

Exhibit 99.1

Report of Independent Registered Public Accounting Firm

To the Shareholders of NSTAR:

We have reviewed the accompanying consolidated balance sheet of NSTAR and its subsidiaries (the “Company”) as of March 31, 2011, and the related consolidated statements of income, comprehensive income and common shareholders’ equity for each of the three-month periods ended March 31, 2011 and 2010 and the consolidated statement of cash flows for the three-month periods ended March 31, 2011 and 2010. These interim financial statements are the responsibility of the Company’s management.

We conducted our review in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should be made to the accompanying consolidated interim financial statements for them to be in conformity with accounting principles generally accepted in the United States of America.

We previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheet as of December 31, 2010, and the related consolidated statements of income, comprehensive income, common shareholders’ equity and cash flows for the year then ended (not presented herein), and in our report dated February 9, 2011, we expressed an unqualified opinion on those consolidated financial statements. In our opinion, the information set forth in the accompanying consolidated balance sheet as of December 31, 2010, is fairly stated in all material respects to the consolidated balance sheet from which it has been derived.

As discussed in Note A to the consolidated financial statements, the Company signed an Agreement and Plan of Merger on October 16, 2010 with Northeast Utilities.

/s/ PRICEWATERHOUSECOOPERS LLP

Boston, Massachusetts

May 5, 2011

EX-101.INS 8 nst-20110331.xml XBRL INSTANCE DOCUMENT 0001035675 us-gaap:RetainedEarningsMember 2011-03-31 0001035675 us-gaap:AdditionalPaidInCapitalMember 2011-03-31 0001035675 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2011-03-31 0001035675 us-gaap:RetainedEarningsMember 2010-12-31 0001035675 us-gaap:AdditionalPaidInCapitalMember 2010-12-31 0001035675 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2010-12-31 0001035675 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2011-01-01 2011-03-31 0001035675 us-gaap:RetainedEarningsMember 2011-01-01 2011-03-31 0001035675 us-gaap:CommonStockMember 2011-03-31 0001035675 us-gaap:CommonStockMember 2010-12-31 0001035675 2010-01-01 2010-12-31 0001035675 2010-03-31 0001035675 2009-12-31 0001035675 us-gaap:AdditionalPaidInCapitalMember 2011-01-01 2011-03-31 0001035675 2011-03-31 0001035675 2010-12-31 0001035675 2010-01-01 2010-03-31 0001035675 2011-05-02 0001035675 2011-01-01 2011-03-31 iso4217:USD xbrli:shares iso4217:USD xbrli:shares false --12-31 Q1 2011 2011-03-31 10-Q 0001035675 103586727 Large Accelerated Filer NSTAR/MA nst <div> Note A. Business Organization and Summary of Significant Accounting Policies 1. About NSTAR NSTAR (or the Company) is a holding company engaged through its subsidiaries in the energy delivery business serving approximately 1.4 million customers in Massachusetts, including approximately 1.1 million electric distribution customers in 81 communities and approximately 300,000 natural gas distribution customers in 51 communities. NSTAR's retail electric and natural gas transmission and distribution utility subsidiaries are NSTAR Electric and NSTAR Gas, respectively. Reference in this report to "NSTAR" shall mean the registrant NSTAR or NSTAR and its subsidiaries as the context requires. 2. Pending Merger with Northeast Utilities On October 16, 2010, upon unanimous approval from their respective Boards of Trustees, NSTAR and Northeast Utilities (NU) entered into an Agreement and Plan of Merger (the Merger Agreement). The transaction will be a merger of equals in a stock-for-stock transfer. Upon the terms and subject to the conditions set forth in the Merger Agreement at closing, NSTAR will become a wholly-owned subsidiary of NU. The combined company will provide electric and gas energy delivery services through six regulated electric and gas utilities in Connecticut, Massachusetts and New Hampshire serving nearly 3.5 million electric and gas customers. Under the terms of the agreement, NSTAR shareholders will receive 1.312 NU common shares for each NSTAR common share that they own. Following completion of the merger, it is anticipated that NU shareholders will own approximately 56 percent and former NSTAR shareholders will own approximately 44 percent of the combined company. On March 4, 2011, shareholders of each company approved the merger and adopted the merger agreement. Completion of the merger is subject to various customary conditions, including receipt of required regulatory approvals. Regulatory Approvals on Pending Merger with Northeast Utilities Federal On January 4, 2011, NSTAR and NU received approval from the Federal Communications Commission, and on February 10, 2011, the applicable Hart-Scott-Rodino waiting period expired. On January 7, 2011, NSTAR and NU filed an application with the Federal Energy Regulatory Commission (FERC), requesting approval of the merger by May 10, 2011. A filing was made with the Nuclear Regulatory Commission on December 9, 2010.   Massachusetts On November 24, 2010, NSTAR and NU filed a joint petition requesting the DPU's approval of their proposed merger. On March 10, 2011, the DPU issued an order that modified the standard of review to be applied in the review of mergers involving Massachusetts utilities from a "no net harm" standard to a "net benefits" standard, meaning that the companies must demonstrate that the pending transaction provides benefits that outweigh the costs. Applicable state law provides that mergers of Massachusetts utilities and their respective holding companies must be "consistent with the public interest." The order states that the DPU has flexibility in applying the factors applicable to the standard of review. NSTAR and NU filed supplemental testimony with the DPU on April 8, 2011 indicating the merger could provide net savings for the combined companies of an estimated $780 million in the first ten years following the closing of the merger and provide other customer benefits. Evidentiary hearings are scheduled to begin on July 6, 2011. NSTAR and NU expect a ruling from the DPU in the second half of 2011. Connecticut In November 2010, the Connecticut Department of Public Utility Control (DPUC) issued a draft decision finding that it lacks jurisdiction to consider the NSTAR merger with NU. In December 2010, the Connecticut Office of Consumer Counsel (OCC) petitioned the DPUC to reconsider its draft decision. On January 26, 2011, the DPUC issued an Administrative Order stating that it would hold a hearing on the question of jurisdiction. In February 2011, oral arguments were held and in March 2011, a public information session on the merger was held. No date has been established for a final decision. In addition, legislation proposing to give the DPUC jurisdiction over the merger received a joint favorable recommendation from the Connecticut Joint Legislative Energy and Technology Committee in March 2011. New Hampshire On April 5, 2011, the New Hampshire Public Utilities Commission (NHPUC) issued an order finding that it does not have statutory authority to approve or reject the merger. Maine NSTAR and NU are also asking Maine regulators to waive jurisdiction over the merger. Although neither NSTAR nor NU subsidiaries serve any customers in Maine, Public Service Company of New Hampshire, an NU subsidiary, owns transmission and generation assets in the state that are subject to the jurisdiction of the Maine Public Utilities Commission. On April 15, 2011, a hearing examiner issued a report rejecting the waiver request, but approving the merger contingent upon approval by the FERC. Litigation Related to the Pending Merger with NU In October 2010, NSTAR, the members of the NSTAR board of trustees, NU, and two wholly-owned NU subsidiaries, NU Holding Energy 1 LLC and NU Holding Energy 2 LLC, were named defendants in eight lawsuits (since consolidated) filed in the Superior Court for Suffolk County, Massachusetts, and one lawsuit filed in federal court in the district of Massachusetts. The lawsuits, each of which was brought by a single shareholder, purported to be brought on behalf of classes of NSTAR shareholders opposed to the terms of the merger agreement and sought, among other things, to enjoin defendants from consummating the merger and either rescission of the merger, to the extent it is completed, or monetary damages. On February 11, 2011, Plaintiffs moved for preliminary injunction in the Massachusetts Superior Court lawsuit seeking to enjoin the March 4, 2011 special meeting of NSTAR shareholders scheduled to vote on the merger. On March 2, 2011, the Massachusetts Superior Court denied the Plaintiffs' motion and the special meetings of NSTAR and NU shareholders went forward as scheduled. Subsequent to the approval of the merger by shareholders of NSTAR and NU at the March 4, 2011 special meetings, the parties filed a joint motion for voluntary dismissal without prejudice of the Massachusetts Superior Court lawsuit, which was granted by the Massachusetts Superior Court on March 8, 2011 and the Plaintiffs filed a Notice of Voluntary Dismissal of the federal lawsuit in the federal court in the district of Massachusetts on March 9, 2011, effectively terminating all shareholder litigation relating to the merger. 3. Basis of Consolidation and Accounting The accompanying consolidated financial information presented as of March 31, 2011 and for the three-month periods ended March 31, 2011 and 2010, has been prepared from NSTAR's books and records without audit by an independent registered public accounting firm. However, NSTAR's independent registered public accounting firm has performed a review of these interim financial statements in accordance with standards established by the PCAOB. The review report is filed as Exhibit 99.1 to this Form 10-Q. Financial information as of December 31, 2010 was derived from the audited consolidated financial statements of NSTAR, but does not include all disclosures required by GAAP. In the opinion of NSTAR's management, all adjustments (which are of a normal recurring nature) necessary for a fair presentation of the financial information for the periods indicated, have been included. All significant intercompany transactions have been eliminated in consolidation. NSTAR's utility subsidiaries follow accounting policies prescribed by the FERC and the DPU. In addition, NSTAR and its subsidiaries are subject to the accounting and reporting requirements of the SEC. The accompanying Consolidated Financial Statements are prepared in conformity with GAAP. NSTAR's utility subsidiaries are subject to the application of ASC 980, Regulated Operations, which considers the effects of regulation resulting from differences in the timing of their recognition of certain revenues and expenses from those of other businesses and industries. The energy delivery business is subject to rate-regulation that is based on cost recovery and meets the criteria for application of ASC 980.   The preparation of financial statements in conformity with GAAP requires management of NSTAR and its subsidiaries to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. The results of operations for the three-month periods ended March 31, 2011 and 2010 are not indicative of the results that may be expected for an entire year. The demand for electricity and natural gas is affected by weather conditions, economic conditions, and consumer conservation behavior. Electric energy sales and revenues are typically higher in the winter and summer months than in the spring and fall months. Natural gas energy sales and revenues are typically higher in the winter months than during other periods of the year. 4. Pension and Postretirement Benefits Other than Pensions (PBOP) Plans NSTAR's net periodic Pension Plan and PBOP Plan benefit costs for the first quarter are based on the latest available participant census data. An annual actuarial valuation will be completed during the second quarter, and cost estimates will be adjusted based on the actual actuarial study results. NSTAR's Pension Plan and PBOP Plan assets are affected by fluctuations in the financial markets. Fluctuations in the fair value of the Pension Plan and PBOP Plan assets impact the funded status, accounting costs, and cash funding requirements of these Plans. The earnings impact of increased Pension and PBOP costs is substantially mitigated by NSTAR's DPU-approved Pension and PBOP rate adjustment mechanism (PAM). Under the PAM, NSTAR recovers its pension and PBOP expense through a reconciling rate mechanism. The PAM removes the volatility in earnings that could result from fluctuations in market conditions and plan experience. Pension NSTAR provides a defined benefit retirement plan, the NSTAR Pension Plan (the Plan), that covers substantially all employees. During the three months ended March 31, 2011, NSTAR contributed $32 million to the Plan. In addition, $6 million was contributed in April 2011. NSTAR currently anticipates making additional contributions of approximately $37 million to the Plan during the remainder of 2011. The actual level of funding may differ from this estimate. Components of net periodic pension benefit cost were as follows:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="82%"> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Service cost</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7.1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6.3</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Interest cost</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15.9</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16.2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Expected return on Plan assets</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(17.3</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(15.7</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Amortization of prior service credit</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.2</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.2</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Recognized actuarial loss</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12.0</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12.7</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr><td valign="top"> Net periodic pension benefit cost</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">17.5</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">19.3</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> Postretirement Benefits Other than Pensions NSTAR also provides health care and other benefits to retired employees who meet certain age and years of service eligibility requirements. Under certain circumstances, eligible retirees are required to contribute to the costs of postretirement benefits. During the three months ended March 31, 2011, NSTAR contributed $7.2 million to this plan. In addition, $2.4 million was contributed in April 2011. NSTAR currently anticipates contributing approximately $20.4 million for the remainder of 2011 toward these benefits. Postretirement benefit costs related to employees of the discontinued operations of MATEP for the three months ended March 31, 2010 are not included in the following table.   Components of net periodic postretirement benefit cost were as follows:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Service cost</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1.7</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1.6</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Interest cost</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">9.3</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">9.2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Expected return on Plan assets</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(5.9</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(5.1</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Amortization of prior service credit</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.4</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.4</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of transition obligation</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Recognized actuarial loss</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4.1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.9</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net periodic postretirement benefit cost</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">9.0</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">9.4</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> 5. Noncontrolling Interest – Cumulative Non-Mandatory Redeemable Preferred Stock of Subsidiary NSTAR Electric has two outstanding series of non-mandatory redeemable preferred stock. Both series are part of a class of NSTAR Electric's Cumulative Preferred Stock. Upon any liquidation of NSTAR Electric, holders of the Cumulative Preferred Stock are entitled to receive the liquidation preference for their shares before any distribution to the holder of the NSTAR Common Shares. The liquidation preference for each outstanding series of Cumulative Preferred Stock is equal to the par value ($100.00 per share) plus accrued and unpaid dividends. The dividends on NSTAR Electric's Cumulative Preferred Stock to the noncontrolling interest are reflected separately after net income and before net income attributable to common shareholders on the accompanying Consolidated Statements of Income. During the year ended December 31, 2010 and during the three months ended March 31, 2011, there were no changes in the noncontrolling interest of NSTAR Electric. NSTAR Electric's noncontrolling interest preferred stock is reflected as noncontrolling interest of a subsidiary in the accompanying Consolidated Balance Sheets outside of permanent equity. Each of the two preferred stock series contains provisions relating to non-payment of preferred dividends that could potentially result in the preferred shareholders being granted the majority control of the Board of Directors of NSTAR Electric until all preferred dividends are paid. As a result, the Cumulative Preferred Stock has not been classified within permanent equity. Non-mandatory redeemable series: Par value $100 per share, 2,890,000 shares authorized and 430,000 shares issued and outstanding: (in thousands, except per share amounts)   <table border="0" cellspacing="0" cellpadding="0" width="92%" align="center"> <tr><td width="26%"> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom" nowrap="nowrap" align="center"> Series</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Current Shares Outstanding</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Redemption Price/Share</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">March 31, 2011</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top" align="center"> 4.25%</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">180,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">103.625</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">18,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">18,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top" align="center"> 4.78%</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">250,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">102.80</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top" colspan="8"> Total non-mandatory redeemable series</td> <td valign="top">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">43,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">43,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table>   6. Interest Income and Other, net Major components of interest income and other, net were as follows:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="80%"> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Interest on regulatory deferrals</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">8,012</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6,693</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Income tax items</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">288</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">372</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other interest expense</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,035</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,186</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Short-term debt</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(230</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(216</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> AFUDC</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">95</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">220</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr><td valign="top"> Total interest income and other, net</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,130</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">5,883</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> 7. Variable Interest Entities NSTAR Electric has certain long-term purchase power agreements with energy facilities where it purchases substantially all of the output from a specified facility for a specified period and has determined these agreements represent variable interests. NSTAR Electric is not considered the primary beneficiary of these entities and does not consolidate the entities because it does not control the activities most relevant to the operating results of these entities and does not hold any equity interests in the entities. NSTAR Electric's exposure to risks and financial support commitments with respect to these entities is limited to the purchase of the power generated at the prices defined under the contractual agreements. NSTAR Electric's involvement with these variable interest entities has no material impact on NSTAR's financial position, financial performance, or cash flows. 8. Subsequent Events Management has reviewed subsequent events through the date of this filing and concluded that no material subsequent events have occurred that are not accounted for in the accompanying Consolidated Financial Statements or disclosed in the accompanying Notes to Consolidated Financial Statements. </div> -12243000 -16551000 59942000 56624000 283243000 279312000 0.56 0.54 20258000 43559000 88227000 93323000 0.51 0.54 0.05 -31591000 -21407000 5883000 7130000 380000 357000 224000 213000 156000 144000 26000 15000 11000 51413000 49954000 10201000 9892000 79200000 59654000 143046000 134905000 4648559000 4663371000 279478000 283870000

294805000

188610000

272673000

316809000

105403000

123638000

20754000

13292000

15173000

14774000

-14585000

-14372000

790574000

784163000

-6411000

35765000

36029000

1450000

1385000

7933925000

7839428000

996673000

891147000

8094000

14910000

4278846000

4241649000

143449000

12591000

13083000

11930000

-138360000

-1153000

-1241000

-5800000

-461000

<div> Note H. Commitments and Contingencies 1. Service Quality Indicators SQI are established performance benchmarks for certain identified measures of service quality relating to customer service and billing performance, safety and reliability and DPU Consumer Division statistics performance for all Massachusetts utilities. NSTAR Electric and NSTAR Gas are required to report annually to the DPU concerning their performance as to each measure and are subject to maximum penalties of up to two and one-half percent of total transmission and distribution revenues should performance fail to meet the applicable benchmarks. NSTAR monitors its service quality continuously, and if it is probable that a liability has been incurred and is estimable, a liability is accrued. Any settlement or rate order that would result in a different liability level from what has been accrued would be adjusted in the period that the DPU issues an order determining the amount of any such liability. NSTAR Electric and NSTAR Gas service quality performance levels for 2010 were not in a penalty situation and the final performance reports were filed with the DPU on March 1, 2011. 2. Environmental Matters NSTAR subsidiaries face possible liabilities as a result of involvement in several multi-party disposal sites, state-regulated sites or third party claims associated with contamination remediation. NSTAR generally expects to have only a small percentage of the total potential liability for the majority of these sites. As of March 31, 2011 and December 31, 2010, NSTAR had liabilities of $0.9 million for these environmental sites. This estimated recorded liability is based on an evaluation of all currently available facts with respect to these sites. NSTAR Gas is participating in the assessment or remediation of certain former MGP sites and alleged MGP waste disposal sites to determine if and to what extent such sites have been contaminated and whether NSTAR Gas may be responsible to undertake remedial action. The DPU permits recovery of costs associated with MGP sites over a 7-year period, without carrying costs. As of March 31, 2011 and December 31, 2010, NSTAR had liabilities of $15.9 million as an estimate for site cleanup costs for several MGP sites for which NSTAR Gas was identified as a potentially responsible party. A corresponding regulatory asset was recorded that reflects the future rate recovery for these costs. Estimates related to environmental remediation costs are reviewed and adjusted as further investigation and assignment of responsibility occurs and as either additional sites are identified or NSTAR's responsibilities for such sites evolve or are resolved. NSTAR's ultimate liability for future environmental remediation costs may vary from these estimates. Based on NSTAR's current assessment of its environmental responsibilities, existing legal requirements, and regulatory policies, NSTAR does not believe that these environmental remediation costs will have a material adverse effect on NSTAR's consolidated results of operations, financial position, or cash flows. 3. Regulatory Proceedings DPU Safety and Reliability Programs (CPSL) As part of the Rate Settlement Agreement, NSTAR Electric is allowed to recover incremental costs related to the double pole inspection, replacement/restoration and transfer program and the underground electric safety program, which includes stray-voltage remediation and manhole inspections, repairs, and upgrades. Recovery of these Capital Program Scheduling List (CPSL) billed costs is subject to DPU review and approval. From 2006 through 2010, NSTAR Electric incurred and billed cumulative incremental revenue requirements of approximately $67 million. During 2011, approximately $3.5 million has been incurred through March 31. These amounts include incremental operations and maintenance and revenue requirements on capital investments.   On May 28, 2010, the DPU issued an order on NSTAR Electric's 2006 CPSL costs recovery filing. The expected recovery amount did not vary materially from the revenue previously recognized. On October 8, 2010, NSTAR Electric submitted a Compliance Filing with the DPU reconciling the recoverable CPSL Program revenue requirement for each year 2006 through 2009 with the revenues already collected to determine the proposed adjustment effective on January 1, 2011. The DPU allowed the proposed rates to go into effect on that date, subject to reconciliation of program costs. NSTAR cannot predict the timing of subsequent DPU orders related to this filing. Should an adverse DPU decision be issued, it could have a material adverse impact on NSTAR's result of operations, financial position, and cash flows. Basic Service Bad Debt Adder On July 1, 2005, in response to a generic DPU order that required electric utilities in Massachusetts to recover the energy-related portion of bad debt costs in their Basic Service rates, NSTAR Electric increased its Basic Service rates and reduced its distribution rates for those bad debt costs. In furtherance of this generic DPU order, NSTAR Electric included a bad debt cost recovery mechanism as a component of its Rate Settlement Agreement. This recovery mechanism (bad debt adder) allows NSTAR Electric to recover its Basic Service bad debt costs on a fully reconciling basis. These rates were implemented, effective January 1, 2006, as part of NSTAR Electric's Rate Settlement Agreement. On February 7, 2007, NSTAR Electric filed its 2006 Basic Service reconciliation with the DPU proposing an adjustment related to the increase of its Basic Service bad debt charge-offs. This proposed rate adjustment was anticipated to be implemented effective July 1, 2007. On June 28, 2007, the DPU issued an order approving the implementation of a revised Basic Service rate. However, the DPU instructed NSTAR Electric to reduce distribution rates by the increase in its Basic Service bad debt charge-offs. Such action would result in a further reduction to distribution rates from the adjustment NSTAR Electric made when it implemented the Settlement Agreement. This adjustment to NSTAR Electric's distribution rates would eliminate the fully reconciling nature of the Basic Service bad debt adder. NSTAR Electric has not implemented the directives of the June 28, 2007 DPU order. Implementation of this order would require NSTAR Electric to write-off a previously recorded regulatory asset related to its Basic Service bad debt costs. NSTAR Electric filed a Motion for Reconsideration of the DPU's order on July 18, 2007. On May 28, 2010, the DPU issued an order and reaffirmed that NSTAR Electric should reduce its distribution rates by the increase in its Basic Service bad debt charge-offs. On June 18, 2010, NSTAR Electric filed an appeal of the DPU's order with the Massachusetts Supreme Judicial Court (SJC). A decision by the SJC is expected in late 2011. As of March 31, 2011, the potential pre-tax impact to earnings of eliminating the bad debt adder would be approximately $23 million. NSTAR cannot predict the timing of this appeals process. NSTAR Electric continues to believe that its position is appropriate and that it is probable upon appeal that it will ultimately prevail. Other In the fourth quarter of each year, NSTAR Electric files proposed distribution rate adjustments for effect on the following January 1. These rate adjustments include a SIP rate factor and several other fully reconciling cost recovery items. Consistent with previous filings, the 2010 filings include a combination of actual and forecasted data for 2010 that NSTAR Electric will update during 2011 with year-end data to allow a final investigation and reconciliation. There are several case years that remain outstanding at the DPU. These cases are pending decisions at the DPU and NSTAR cannot predict the timing or the ultimate outcome of these filings. 4. Yankee Companies Spent Fuel Litigation In October 2006, the U.S. Court of Federal Claims issued a judgment in a spent nuclear fuel litigation in the amounts of $34.2 million, $32.9 million, and $75.8 million for CY, YA, and MY, respectively. This judgment in favor of the Yankee Companies relates to the alleged failure of the Department of Energy (DOE) to provide for a permanent facility to store spent nuclear fuel for years prior to 2001 for CY and YA, and prior to 2002 for MY (DOE Phase I Damages). NSTAR Electric's portion of the Phase I judgments amounts to $4.8 million, $4.6 million, and $3 million, respectively. The DOE appealed this decision to the United States Court of Appeals for the Federal Circuit that affirmed in part and reversed in part the awards of the earlier Phase I judgments. The Court of Federal Claims issued a decision on remand on September 7, 2010, which determined that the net damage awards are to be amended against the DOE in the amounts of $39.7 million, $21.2 million, and $81.7 million for CY, YA, and MY, respectively. NSTAR Electric's portion of the appealed judgments amounts to $5.6 million, $3 million, and $3.3 million, respectively. The DOE filed notice of its appeal of the decision on remand to the United States Court of Appeals for the Federal Circuit on November 8, 2010, and the Yankee Companies filed their notice of cross-appeal on a limited issue on November 19, 2010. The DOE's brief on appeal was filed February 4, 2011. A final decision on this appeal could be received by March 2012. On July 1, 2009, the Yankee Companies filed for additional damages related to the alleged failure of the DOE to provide for a permanent facility to store spent nuclear fuel for the years from January 2002 through December 2008 for CY and YA, and from January 2003 through December 2008 for MY (DOE Phase II Damages). This phase of the spent nuclear fuel litigation specifies damages in the amounts of $135.4 million, $86.1 million, and $43 million for CY, YA, and MY, respectively. Claim amounts applicable to NSTAR Electric are $19 million, $12 million, and $1.7 million, respectively. NSTAR cannot predict the ultimate outcome of these pending decisions for trial, appeal or the potential subsequent complaints. However, should the Yankee Companies ultimately prevail, NSTAR Electric's share of the proceeds received would be refunded to its customers. 5. Legal Matters In the normal course of its business, NSTAR and its subsidiaries are involved in certain legal matters, including civil litigation. Management is unable to fully determine a range of reasonably possible court-ordered damages, settlement amounts, and related litigation costs ("legal liabilities") that would be in excess of amounts accrued and amounts covered by insurance. Based on the information currently available, NSTAR does not believe that it is probable that any such legal liabilities will have a material impact on its consolidated financial position. However, it is reasonably possible that additional legal liabilities that may result from changes in circumstances could have a material impact on its results of operations, financial condition, and cash flows. </div>

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<div> Note C. Derivative Instruments Energy Contracts NSTAR Electric has determined that it is not required to account for the majority of its electricity supply contracts as derivatives because they qualify for, and NSTAR Electric has elected, the normal purchases and sales exception. As a result, these agreements are not reflected on the accompanying Consolidated Balance Sheets. NSTAR Electric has a long-term renewable energy contract that does not qualify for the normal purchases and sales exception and is valued at an estimated $2.1 million and $2.4 million liability as of March 31, 2011 and December 31, 2010, respectively. NSTAR Electric has measured the difference between the cost of this contract and projected market energy costs over the life of the contract, and recorded a long-term derivative liability and a corresponding long-term regulatory asset for the value of this contract. Changes in the value of the contract have no impact on earnings. NSTAR Gas has only one significant natural gas supply contract. This contract is an all-requirements portfolio asset management contract that expires in October 2011. This contract contains market based pricing terms and therefore no financial statement adjustments are required. The following costs were incurred and recorded to "Cost of gas sold" on the accompanying Consolidated Statements of Income:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Natural gas supply costs incurred on NSTAR Gas' all-requirements contract</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">68</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">83</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> Refer to the accompanying Part 1, Item 3, "Quantitative and Qualitative Disclosure About Market Risk," for a further discussion. Natural Gas Hedging Agreements In accordance with a DPU order, NSTAR Gas purchases financial contracts based on NYMEX natural gas futures in order to reduce cash flow variability associated with the purchase price for approximately one-third of its natural gas purchases. This practice attempts to minimize the impact of fluctuations in prices to NSTAR's firm gas customers. These financial contracts do not procure natural gas supply, and qualify as derivative financial instruments. The fair value of these instruments is recognized on the accompanying Consolidated Balance Sheets as an asset or liability representing amounts due from or payable to the counter parties of NSTAR Gas, as if such contracts were settled as of the balance sheet date. All actual costs incurred or benefits realized when these contracts are settled are included in the CGAC of NSTAR Gas. NSTAR Gas records a regulatory asset or liability for the market price changes, in lieu of recording an adjustment to Other Comprehensive Income. These derivative contracts extend through April 2012. As of March 31, 2011, these natural gas hedging agreements, representing seventeen individual contracts, hedged 4,790 BBtu. The settlement of these contracts may have a short-term cash flow impact. Over the long-term, any such effects are mitigated by a regulatory recovery mechanism for those costs. During the three-month periods ended March 31, 2011 and 2010, $7.2 million and $3.1 million, respectively, of these financial contracts were settled and were recognized as additional charges to "Cost of gas sold" on the accompanying Consolidated Statements of Income. Potential counterparty credit risk is minimized by collateral requirements as specified in credit support agreements to the contracts that are based on the credit rating of the counterparty and the fair value exposure under each contract's term. In the event of a downgrade in the credit rating of either party, these agreements may require that party to immediately collateralize, by either cash payment, letter of credit, or other qualifying security instrument, any exposure that exists for obligations in excess of specified threshold amounts. NSTAR Gas is also subject to this credit risk-related contingent feature. Based on market conditions at the time of a downgrade, NSTAR Gas could be required to post collateral in an amount that could be equal to or less than the fair value of the liability at the time of the downgrade. As of March 31, 2011, NSTAR Gas has an A+ Standard & Poors Credit Issuer credit rating. Collateral obligations are required in the event of a downgrade below an A rating by Standard & Poors and/or if the fair value of the contract exceeds established credit thresholds. Based on NSTAR Gas' liability position with its natural gas hedge contract counterparties as of March 31, 2011, should NSTAR Gas' credit rating be downgraded the collateral obligations described below would result.   <table border="0" cellspacing="0" cellpadding="0" width="84%" align="center"> <tr><td width="63%"> </td> <td valign="bottom" width="10%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="10%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="10%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> Credit Ratings Downgraded to:</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level Below "A" Rating</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Incremental Obligations</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Cumulative Obligations</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> A-/A3</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> BBB+/Baa1</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> BBB/Baa2</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> BBB-/Baa3, or below investment grade</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">700</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">700</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> In addition, these agreements contain cross-default provisions that would allow NSTAR Gas and its counterparties to terminate and liquidate a natural gas hedge contract if either party is in default on other swap agreements with that same counterparty, or another unrelated agreement with that same counterparty in excess of stipulated threshold amounts. Derivative Instruments and Hedging Activities The following disclosures summarize the fair value of NSTAR Gas' hedging agreements and NSTAR Electric's renewable energy contracts deemed to be derivatives, the balance sheet positions of these agreements and the related settlements of hedging agreements:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="72%"> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">March 31, 2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td valign="bottom"> </td></tr> <tr><td height="8"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td></tr> <tr bgcolor="#cceeff"><td valign="top">Gas Hedging Agreements asset (liability) positions</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Consolidated Balance Sheet Account:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred debits – Other deferred debits</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">179</td> <td valign="bottom" nowrap="nowrap"> </td></tr> <tr><td valign="top"> Current liabilities – Power contract obligations</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(700</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(6,646</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total net liability for derivative instruments</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(700</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(6,467</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr> <tr><td height="8"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td></tr> <tr><td valign="top">Renewable Energy Contract – Non-hedging instrument</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Consolidated Balance Sheet Account:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Deferred credits and other liabilities – Power contract obligations</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(2,067</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(2,400</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total liability for non-hedging derivative instrument</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(2,067</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(2,400</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table>   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="top" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Amount of Gain or (Loss) Recognized Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> Settlement of Gas Hedging Agreements</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Consolidated Statement of Income Account:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Increase to Cost of gas sold</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(7,196</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(3,051</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Increase to Operating revenues reflecting recovery of settlements from customers</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,196</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,051</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr><td valign="top"> Net earnings impact</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> </div>

-289000

5575000

<div> Note B. Sale of MATEP On June 1, 2010, NSTAR completed the sale of its stock ownership interest in its district energy operations business, MATEP, for $343 million in cash, to a joint venture comprised of Veolia Energy North America, a Boston-based subsidiary of Veolia Environnement and Morgan Stanley Infrastructure Partners. The sale resulted in a non-recurring, after-tax gain of $109.9 million, including transaction costs, or $1.04 per share, for 2010. Part of the sale proceeds were utilized to retire the $85.5 million of MATEP's long-term Notes, together with a retirement premium of $18 million.   The operating results of MATEP for the quarter ended March 31, 2010 were separately classified and reported as discontinued operations on the accompanying Consolidated Statements of Income. A summary of discontinued operations is as follows:   <table border="0" cellspacing="0" cellpadding="0" width="68%" align="center"> <tr><td width="74%"> </td> <td valign="bottom" width="20%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Three Months Ended March 31, 2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Operating revenues</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">34,885</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Operating expenses</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,935</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Interest charges</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,645</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other income</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">272</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Income taxes</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,002</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr><td valign="top"> Income from discontinued operations</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,575</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Loss on sale of discontinued operations, net of tax</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">289</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr><td valign="top"> Net income from discontinued operations</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">5,286</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> </div>

44023000

44351000

<div> Note E. Earnings Per Common Share Basic EPS is calculated by dividing net income attributable to common shareholders, which includes a deduction for preferred dividends of a subsidiary, by the weighted average common shares outstanding during the respective period. Diluted EPS is similar to the computation of basic EPS except that the weighted average common shares are increased to include the impact of potential (nonvested) shares and stock options granted (stock-based compensation) in accordance with NSTAR's Long Term Incentive Plan. The following table summarizes basic and diluted EPS:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands, except per share amounts)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net income attributable to common shareholders</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">56,411</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">59,718</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Basic and Diluted EPS:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Continuing operations</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">0.54</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">0.51</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Discontinued operations</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.05</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total earnings</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">0.54</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">0.56</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr> <tr><td height="8"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td></tr> <tr><td valign="top"> Weighted average common shares outstanding for basic EPS</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">103,587</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">106,808</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Effect of dilutive shares:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Weighted average dilutive potential common shares</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">388</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">222</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Weighted average common shares outstanding for diluted EPS</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">103,975</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">107,030</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> </div>

5619000

5539000

1120000

675000

<div> Note G. Fair Value Measurements NSTAR follows a fair value hierarchy that prioritizes the inputs used to determine fair value and requires the Company to classify assets and liabilities carried at fair value based on the observability of these inputs. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The three levels of the fair value hierarchy are: Level 1 – Unadjusted quoted prices available in active markets for identical assets or liabilities as of the reporting date. Financial assets utilizing Level 1 inputs include active exchange-traded equity securities. Level 2 – Quoted prices available in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, inputs other than quoted prices that are directly observable, and inputs derived principally from market data. Level 3 – Unobservable inputs from objective sources. These inputs may be based on entity-specific inputs. Level 3 inputs include all inputs that do not meet the requirements of Level 1 or Level 2. Gas hedges were valued at calculated settlement prices. The renewable energy contract was valued based on the difference between the contracted price and the estimated fair value of remaining contracted supply to be purchased. Inputs used to develop the estimate included on-line regional generation and forecasted demand.   The following represents the fair value hierarchy of NSTAR's financial assets and liabilities that were recognized at fair value on a recurring basis as of March 31, 2011 and December 31, 2010. Financial assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurement. Recurring Fair Value Measures:   <table border="0" cellspacing="0" cellpadding="0" width="92%" align="center"> <tr><td width="77%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">March 31, 2011</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 1</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 2</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 3</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Government Money Market Securities(a) </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred Compensation Assets ( b ) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Investments ( b ) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr> <tr><td height="8"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td></tr> <tr><td valign="top"> Liabilities:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gas Hedges ( c ) </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Renewable Energy Contract ( d ) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="16"> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">December 31, 2010</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 1</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 2</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 3</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Government Money Market Securities(a) </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred Compensation Assets ( b ) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Investments ( b ) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr> <tr><td height="8"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td></tr> <tr><td valign="top"> Liabilities:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gas Hedges ( c ) </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Renewable Energy Contract (d) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">8</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table>   <table border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="2%"> </td> <td valign="bottom" width="1%"> </td> <td> </td> <td valign="bottom" width="1%"> </td> <td width="96%"> </td></tr> <tr><td valign="top">(a)</td> <td valign="bottom">  </td> <td valign="top">-</td> <td valign="bottom">  </td> <td valign="top">Included in "Cash and cash equivalents" on the accompanying Consolidated Balance Sheets</td></tr> <tr><td valign="top">(b)</td> <td valign="bottom">  </td> <td valign="top">-</td> <td valign="bottom">  </td> <td valign="top">Included in "Other investments" on the accompanying Consolidated Balance Sheets</td></tr> <tr><td valign="top">(c)</td> <td valign="bottom">  </td> <td valign="top">-</td> <td valign="bottom">  </td> <td valign="top">Included in "Deferred debits: Other deferred debits" and "Current liabilities: Power contract obligations" on the accompanying Balance Sheets</td></tr> <tr><td valign="top">(d)</td> <td valign="bottom">  </td> <td valign="top">-</td> <td valign="bottom">  </td> <td valign="top">Included in "Deferred credits and other liabilities: Power contract obligations" on the accompanying Consolidated Balance Sheets</td></tr></table> Fair Value of Financial Instruments The carrying amounts for cash and cash equivalents, net accounts receivable, other current assets, certain current liabilities, and notes payable as of March 31, 2011 and December 31, 2010, respectively, approximate fair value due to the short-term nature of these securities. The fair values of long-term indebtedness (excluding notes payable, including current maturities) are based on the quoted market prices of similar issues. Carrying amounts and fair values as of March 31, 2011 and December 31, 2010 were as follows:   <table border="0" cellspacing="0" cellpadding="0" width="92%" align="center"> <tr><td width="56%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="6" align="center">March 31, 2011</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="6" align="center">December 31, 2010</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Carrying Amount</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Fair Value</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Carrying Amount</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Fair Value</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Long-term indebtedness of continuing operations (including current maturities)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,327,338</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,483,780</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,348,925</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,545,200</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div>

54922000

56901000

<div> Note D. Income Taxes Effective Tax Rate The following table reconciles the statutory federal income tax rate to the annual estimated effective income tax rate for 2011 and the actual effective income tax rate for the year ended December 31, 2010:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="86%"> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Statutory tax rate</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> State income tax, net of federal income tax benefit</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Impact of IRS settlement</td> <td valign="bottom">  </td> <td valign="bottom" nowrap="nowrap"> </td> <td valign="bottom" nowrap="nowrap" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Effective tax rate</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">38</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">41</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> Receipt of Federal Tax Refund for 2001-2007 Tax Years On September 30, 2010, NSTAR accepted a settlement offer from the IRS Office of Appeals on issues related to its 2001-2007 Federal income tax returns. NSTAR received notification on January 3, 2011 that the Joint Committee approved the Settlement Agreement. On April 21, 2011, NSTAR received a $143.3 million refund payment from the IRS, relating to the 2001-2007 tax years. The approved settlement and receipt of the refund resolves all outstanding tax matters for these years. Open Tax Years The 2008 and 2009 Federal income tax returns have been examined under the IRS Compliance Assurance Process (CAP) with no adjustments. The 2010 Federal income tax return is being reviewed under CAP. This program accelerates the examination of the return in an attempt to resolve issues before the tax return is filed. The outcome of any potential audit adjustments and the timing are uncertain. Uncertain Tax Positions NSTAR did not have a reserve for uncertain tax positions at March 31, 2011 and December 31, 2010.   Interest on Tax Positions The total amount of accrued interest receivable related to tax matters included in "Other current assets" on the accompanying Consolidated Balance Sheets was as follows:   <table border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="80%"> </td> <td valign="bottom" width="7%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="7%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">March 31,</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">December 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accrued tax interest receivable</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">27.9</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">27.6</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> Substantially all of the $27.9 million in accrued tax interest receivable at March 31, 2011 was collected in the April 21, 2011 payment from the IRS. </div>

11400000

14100000

129120000

33305000

36422000

-26759000

-84274000

-16284000

-20190000

2094000

-4265000

-10179000

-5664000

20714000

19776000

-18355000

-72963000

15606000

30107000

-17007000

31336000

25064000

33456000

29839000

3763000

2355000

1519000

32871000

22477000

24025000

33648000

51362000

31172000

7933925000

7839428000

1077441000

1015080000

2577638000

2582699000

2301283000

2257896000

98944000

99635000

127860000

84312000

46955000

69167000

43000000

490000

7502000

-187632000

-70539000

-186391000

-70539000

-88251000

-64869000

-82451000

-64869000

137523000

134255000

137984000

134255000

59718000

56411000

648358000

668756000

119110000

123942000

45713000

41448000

2083039000

2066750000

213000

73761000

75445000

161936000

164188000

687000

275000

2173423000

2173584000

77157000

78234000

517000

6770000

970000

1215000

453000

-5555000

3446000

1320000

3429000

42724000

44023000

490000

79005000

80556000

672517000

675397000

420194000

-16000000

19500000

6377000

1990000

60208000

56901000

16168000

15862000

1625564000

1663257000

106710000

118525000

4755269000

4781896000

6274123000

6326628000

767468000

792698000

412349000

319331000

2031626000

2016796000

28583000

21336000

500412000

412000

17007000

1054987000

1067375000

<div> Note F. Segment and Related Information For the purpose of providing segment information, NSTAR's principal operating segments are its traditional core businesses of electric and gas retail transmission and distribution utilities that provide energy delivery services in 107 cities and towns in Massachusetts.   NSTAR has aggregated the results of operations and assets of its telecommunications subsidiary with the electric utility operations, and aggregated the liquefied natural gas service subsidiary with gas utility operations. The telecommunications subsidiary, liquefied natural gas service subsidiary and MATEP were previously aggregated as unregulated operations for purposes of segment reporting. The segment presentation now reflects the ongoing profile of NSTAR's operations as primarily comprised of electric and gas utility operations. Amounts related to discontinued operations have been excluded from the data presented. Amounts shown on the following table for the three months ended March 31, 2011 and 2010 include the allocation of NSTAR's (Holding Company) results of operations and assets to the two business segments, net of inter-company transactions that primarily consist of interest charges and investment assets, respectively. The allocation of Holding Company charges is based on an indirect allocation of the Holding Company's investment relating to the two business segments. Financial data for the segments of continuing operations were as follows:   <table border="0" cellspacing="0" cellpadding="0" width="84%" align="center"> <tr><td width="66%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Utility Operations</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">Consolidated</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Electric</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Gas</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Three months ended March 31,</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> 2011</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Operating revenues</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">602,500</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">190,198</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">792,698</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Segment net income</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">39,979</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">16,922</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">56,901</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2010</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Operating revenues</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">584,900</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">182,568</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">767,468</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Segment net income</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">39,582</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">15,340</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">54,922</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td height="8"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td></tr> <tr><td valign="top"> Total assets</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> March 31, 2011</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,004,550</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">834,878</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,839,428</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> December 31, 2010</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,040,326</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">893,599</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,933,925</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div>

2406000

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103587000

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1940753000

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784163000

103587000

1067375000

31190000

34548000

110619000

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109989000

121296000

107030000

103975000

106808000

103587000

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Business Description And Significant Accounting Policies Text Block Business Organization and Summary of Significant Accounting Policies Sale of MATEP Disposal Groups Including Discontinued Operations Disclosure Text Block Sale of MATEP Derivative Instruments EX-101.PRE 13 nst-20110331_pre.xml XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE XML 14 R11.xml IDEA: Income Taxes 2.2.0.25falsefalse10401 - Disclosure - Income Taxestruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0001035675duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0us-gaap_IncomeTaxExpenseBenefitAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseIncome Taxes3false0us-gaap_IncomeTaxDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> Note D. Income Taxes Effective Tax Rate The following table reconciles the statutory federal income tax rate to the annual estimated effective income tax rate for 2011 and the actual effective income tax rate for the year ended December 31, 2010:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="86%"> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Statutory tax rate</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> State income tax, net of federal income tax benefit</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Impact of IRS settlement</td> <td valign="bottom">  </td> <td valign="bottom" nowrap="nowrap"> </td> <td valign="bottom" nowrap="nowrap" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Effective tax rate</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">38</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">41</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> Receipt of Federal Tax Refund for 2001-2007 Tax Years On September 30, 2010, NSTAR accepted a settlement offer from the IRS Office of Appeals on issues related to its 2001-2007 Federal income tax returns. NSTAR received notification on January 3, 2011 that the Joint Committee approved the Settlement Agreement. On April 21, 2011, NSTAR received a $143.3 million refund payment from the IRS, relating to the 2001-2007 tax years. The approved settlement and receipt of the refund resolves all outstanding tax matters for these years. Open Tax Years The 2008 and 2009 Federal income tax returns have been examined under the IRS Compliance Assurance Process (CAP) with no adjustments. The 2010 Federal income tax return is being reviewed under CAP. This program accelerates the examination of the return in an attempt to resolve issues before the tax return is filed. The outcome of any potential audit adjustments and the timing are uncertain. Uncertain Tax Positions NSTAR did not have a reserve for uncertain tax positions at March 31, 2011 and December 31, 2010.   Interest on Tax Positions The total amount of accrued interest receivable related to tax matters included in "Other current assets" on the accompanying Consolidated Balance Sheets was as follows:   <table border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="80%"> </td> <td valign="bottom" width="7%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="7%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">March 31,</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2" align="center">December 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accrued tax interest receivable</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">27.9</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">27.6</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> Substantially all of the $27.9 million in accrued tax interest receivable at March 31, 2011 was collected in the April 21, 2011 payment from the IRS. </div>Note D. Income Taxes Effective Tax Rate The following table reconciles the statutory federal income tax rate to the annual estimated effective income taxfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescription containing the entire income tax disclosure. Examples include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. This element may be used as a single block of text to encapsulate the entire disclosure including data and tables.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 136, 172 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43, 44, 45, 46, 47, 48, 49 falsefalseIncome Taxes12Income TaxesUnKnownUnKnownUnKnownUnKnownfalsetrue XML 15 R10.xml IDEA: Derivative Instruments 2.2.0.25falsefalse10301 - Disclosure - Derivative Instrumentstruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0001035675duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0us-gaap_GeneralDiscussionOfDerivativeInstrumentsAndHedgingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseDerivative Instruments3false0us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> Note C. Derivative Instruments Energy Contracts NSTAR Electric has determined that it is not required to account for the majority of its electricity supply contracts as derivatives because they qualify for, and NSTAR Electric has elected, the normal purchases and sales exception. As a result, these agreements are not reflected on the accompanying Consolidated Balance Sheets. NSTAR Electric has a long-term renewable energy contract that does not qualify for the normal purchases and sales exception and is valued at an estimated $2.1 million and $2.4 million liability as of March 31, 2011 and December 31, 2010, respectively. NSTAR Electric has measured the difference between the cost of this contract and projected market energy costs over the life of the contract, and recorded a long-term derivative liability and a corresponding long-term regulatory asset for the value of this contract. Changes in the value of the contract have no impact on earnings. NSTAR Gas has only one significant natural gas supply contract. This contract is an all-requirements portfolio asset management contract that expires in October 2011. This contract contains market based pricing terms and therefore no financial statement adjustments are required. The following costs were incurred and recorded to "Cost of gas sold" on the accompanying Consolidated Statements of Income:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Natural gas supply costs incurred on NSTAR Gas' all-requirements contract</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">68</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">83</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> Refer to the accompanying Part 1, Item 3, "Quantitative and Qualitative Disclosure About Market Risk," for a further discussion. Natural Gas Hedging Agreements In accordance with a DPU order, NSTAR Gas purchases financial contracts based on NYMEX natural gas futures in order to reduce cash flow variability associated with the purchase price for approximately one-third of its natural gas purchases. This practice attempts to minimize the impact of fluctuations in prices to NSTAR's firm gas customers. These financial contracts do not procure natural gas supply, and qualify as derivative financial instruments. The fair value of these instruments is recognized on the accompanying Consolidated Balance Sheets as an asset or liability representing amounts due from or payable to the counter parties of NSTAR Gas, as if such contracts were settled as of the balance sheet date. All actual costs incurred or benefits realized when these contracts are settled are included in the CGAC of NSTAR Gas. NSTAR Gas records a regulatory asset or liability for the market price changes, in lieu of recording an adjustment to Other Comprehensive Income. These derivative contracts extend through April 2012. As of March 31, 2011, these natural gas hedging agreements, representing seventeen individual contracts, hedged 4,790 BBtu. The settlement of these contracts may have a short-term cash flow impact. Over the long-term, any such effects are mitigated by a regulatory recovery mechanism for those costs. During the three-month periods ended March 31, 2011 and 2010, $7.2 million and $3.1 million, respectively, of these financial contracts were settled and were recognized as additional charges to "Cost of gas sold" on the accompanying Consolidated Statements of Income. Potential counterparty credit risk is minimized by collateral requirements as specified in credit support agreements to the contracts that are based on the credit rating of the counterparty and the fair value exposure under each contract's term. In the event of a downgrade in the credit rating of either party, these agreements may require that party to immediately collateralize, by either cash payment, letter of credit, or other qualifying security instrument, any exposure that exists for obligations in excess of specified threshold amounts. NSTAR Gas is also subject to this credit risk-related contingent feature. Based on market conditions at the time of a downgrade, NSTAR Gas could be required to post collateral in an amount that could be equal to or less than the fair value of the liability at the time of the downgrade. As of March 31, 2011, NSTAR Gas has an A+ Standard & Poors Credit Issuer credit rating. Collateral obligations are required in the event of a downgrade below an A rating by Standard & Poors and/or if the fair value of the contract exceeds established credit thresholds. Based on NSTAR Gas' liability position with its natural gas hedge contract counterparties as of March 31, 2011, should NSTAR Gas' credit rating be downgraded the collateral obligations described below would result.   <table border="0" cellspacing="0" cellpadding="0" width="84%" align="center"> <tr><td width="63%"> </td> <td valign="bottom" width="10%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="10%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="10%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> Credit Ratings Downgraded to:</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level Below "A" Rating</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Incremental Obligations</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Cumulative Obligations</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> A-/A3</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> BBB+/Baa1</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> BBB/Baa2</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> BBB-/Baa3, or below investment grade</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">700</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">700</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> In addition, these agreements contain cross-default provisions that would allow NSTAR Gas and its counterparties to terminate and liquidate a natural gas hedge contract if either party is in default on other swap agreements with that same counterparty, or another unrelated agreement with that same counterparty in excess of stipulated threshold amounts. Derivative Instruments and Hedging Activities The following disclosures summarize the fair value of NSTAR Gas' hedging agreements and NSTAR Electric's renewable energy contracts deemed to be derivatives, the balance sheet positions of these agreements and the related settlements of hedging agreements:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="72%"> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">March 31, 2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td valign="bottom"> </td></tr> <tr><td height="8"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td></tr> <tr bgcolor="#cceeff"><td valign="top">Gas Hedging Agreements asset (liability) positions</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Consolidated Balance Sheet Account:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred debits – Other deferred debits</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">179</td> <td valign="bottom" nowrap="nowrap"> </td></tr> <tr><td valign="top"> Current liabilities – Power contract obligations</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(700</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(6,646</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total net liability for derivative instruments</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(700</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(6,467</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr> <tr><td height="8"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td></tr> <tr><td valign="top">Renewable Energy Contract – Non-hedging instrument</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Consolidated Balance Sheet Account:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Deferred credits and other liabilities – Power contract obligations</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(2,067</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(2,400</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total liability for non-hedging derivative instrument</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(2,067</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(2,400</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table>   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="top" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Amount of Gain or (Loss) Recognized Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> Settlement of Gas Hedging Agreements</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Consolidated Statement of Income Account:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Increase to Cost of gas sold</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(7,196</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(3,051</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Increase to Operating revenues reflecting recovery of settlements from customers</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,196</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,051</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr><td valign="top"> Net earnings impact</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> </div>Note C. Derivative Instruments Energy Contracts NSTAR Electric has determined that it is not required to account for the majority of its electricity supplyfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element can be used to disclose the entity's entire derivative instruments and hedging activities disclosure as a single block of text. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising there from, and the amounts of and methodologies and assumptions used in determining the amounts of such items.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44 falsefalseDerivative Instruments12Derivative InstrumentsUnKnownUnKnownUnKnownUnKnownfalsetrue XML 16 R8.xml IDEA: Business Organization and Summary of Significant Accounting Policies 2.2.0.25falsefalse10101 - Disclosure - Business Organization and Summary of Significant Accounting Policiestruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0001035675duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0nst_BusinessOrganizationAndSummaryOfSignificantAccountingPoliciesAbstractnstfalsenadurationBusiness Organization and Summary of Significant Accounting Policies [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringBusiness Organization and Summary of Significant Accounting Policies [Abstract]falsefalseBusiness Organization and Summary of Significant Accounting Policies3false0nst_BusinessDescriptionAndSignificantAccountingPoliciesTextBlocknstfalsenadurationThis element may be used to describe the nature of the entity's business and to describe all significant accounting policies...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> Note A. Business Organization and Summary of Significant Accounting Policies 1. About NSTAR NSTAR (or the Company) is a holding company engaged through its subsidiaries in the energy delivery business serving approximately 1.4 million customers in Massachusetts, including approximately 1.1 million electric distribution customers in 81 communities and approximately 300,000 natural gas distribution customers in 51 communities. NSTAR's retail electric and natural gas transmission and distribution utility subsidiaries are NSTAR Electric and NSTAR Gas, respectively. Reference in this report to "NSTAR" shall mean the registrant NSTAR or NSTAR and its subsidiaries as the context requires. 2. Pending Merger with Northeast Utilities On October 16, 2010, upon unanimous approval from their respective Boards of Trustees, NSTAR and Northeast Utilities (NU) entered into an Agreement and Plan of Merger (the Merger Agreement). The transaction will be a merger of equals in a stock-for-stock transfer. Upon the terms and subject to the conditions set forth in the Merger Agreement at closing, NSTAR will become a wholly-owned subsidiary of NU. The combined company will provide electric and gas energy delivery services through six regulated electric and gas utilities in Connecticut, Massachusetts and New Hampshire serving nearly 3.5 million electric and gas customers. Under the terms of the agreement, NSTAR shareholders will receive 1.312 NU common shares for each NSTAR common share that they own. Following completion of the merger, it is anticipated that NU shareholders will own approximately 56 percent and former NSTAR shareholders will own approximately 44 percent of the combined company. On March 4, 2011, shareholders of each company approved the merger and adopted the merger agreement. Completion of the merger is subject to various customary conditions, including receipt of required regulatory approvals. Regulatory Approvals on Pending Merger with Northeast Utilities Federal On January 4, 2011, NSTAR and NU received approval from the Federal Communications Commission, and on February 10, 2011, the applicable Hart-Scott-Rodino waiting period expired. On January 7, 2011, NSTAR and NU filed an application with the Federal Energy Regulatory Commission (FERC), requesting approval of the merger by May 10, 2011. A filing was made with the Nuclear Regulatory Commission on December 9, 2010.   Massachusetts On November 24, 2010, NSTAR and NU filed a joint petition requesting the DPU's approval of their proposed merger. On March 10, 2011, the DPU issued an order that modified the standard of review to be applied in the review of mergers involving Massachusetts utilities from a "no net harm" standard to a "net benefits" standard, meaning that the companies must demonstrate that the pending transaction provides benefits that outweigh the costs. Applicable state law provides that mergers of Massachusetts utilities and their respective holding companies must be "consistent with the public interest." The order states that the DPU has flexibility in applying the factors applicable to the standard of review. NSTAR and NU filed supplemental testimony with the DPU on April 8, 2011 indicating the merger could provide net savings for the combined companies of an estimated $780 million in the first ten years following the closing of the merger and provide other customer benefits. Evidentiary hearings are scheduled to begin on July 6, 2011. NSTAR and NU expect a ruling from the DPU in the second half of 2011. Connecticut In November 2010, the Connecticut Department of Public Utility Control (DPUC) issued a draft decision finding that it lacks jurisdiction to consider the NSTAR merger with NU. In December 2010, the Connecticut Office of Consumer Counsel (OCC) petitioned the DPUC to reconsider its draft decision. On January 26, 2011, the DPUC issued an Administrative Order stating that it would hold a hearing on the question of jurisdiction. In February 2011, oral arguments were held and in March 2011, a public information session on the merger was held. No date has been established for a final decision. In addition, legislation proposing to give the DPUC jurisdiction over the merger received a joint favorable recommendation from the Connecticut Joint Legislative Energy and Technology Committee in March 2011. New Hampshire On April 5, 2011, the New Hampshire Public Utilities Commission (NHPUC) issued an order finding that it does not have statutory authority to approve or reject the merger. Maine NSTAR and NU are also asking Maine regulators to waive jurisdiction over the merger. Although neither NSTAR nor NU subsidiaries serve any customers in Maine, Public Service Company of New Hampshire, an NU subsidiary, owns transmission and generation assets in the state that are subject to the jurisdiction of the Maine Public Utilities Commission. On April 15, 2011, a hearing examiner issued a report rejecting the waiver request, but approving the merger contingent upon approval by the FERC. Litigation Related to the Pending Merger with NU In October 2010, NSTAR, the members of the NSTAR board of trustees, NU, and two wholly-owned NU subsidiaries, NU Holding Energy 1 LLC and NU Holding Energy 2 LLC, were named defendants in eight lawsuits (since consolidated) filed in the Superior Court for Suffolk County, Massachusetts, and one lawsuit filed in federal court in the district of Massachusetts. The lawsuits, each of which was brought by a single shareholder, purported to be brought on behalf of classes of NSTAR shareholders opposed to the terms of the merger agreement and sought, among other things, to enjoin defendants from consummating the merger and either rescission of the merger, to the extent it is completed, or monetary damages. On February 11, 2011, Plaintiffs moved for preliminary injunction in the Massachusetts Superior Court lawsuit seeking to enjoin the March 4, 2011 special meeting of NSTAR shareholders scheduled to vote on the merger. On March 2, 2011, the Massachusetts Superior Court denied the Plaintiffs' motion and the special meetings of NSTAR and NU shareholders went forward as scheduled. Subsequent to the approval of the merger by shareholders of NSTAR and NU at the March 4, 2011 special meetings, the parties filed a joint motion for voluntary dismissal without prejudice of the Massachusetts Superior Court lawsuit, which was granted by the Massachusetts Superior Court on March 8, 2011 and the Plaintiffs filed a Notice of Voluntary Dismissal of the federal lawsuit in the federal court in the district of Massachusetts on March 9, 2011, effectively terminating all shareholder litigation relating to the merger. 3. Basis of Consolidation and Accounting The accompanying consolidated financial information presented as of March 31, 2011 and for the three-month periods ended March 31, 2011 and 2010, has been prepared from NSTAR's books and records without audit by an independent registered public accounting firm. However, NSTAR's independent registered public accounting firm has performed a review of these interim financial statements in accordance with standards established by the PCAOB. The review report is filed as Exhibit 99.1 to this Form 10-Q. Financial information as of December 31, 2010 was derived from the audited consolidated financial statements of NSTAR, but does not include all disclosures required by GAAP. In the opinion of NSTAR's management, all adjustments (which are of a normal recurring nature) necessary for a fair presentation of the financial information for the periods indicated, have been included. All significant intercompany transactions have been eliminated in consolidation. NSTAR's utility subsidiaries follow accounting policies prescribed by the FERC and the DPU. In addition, NSTAR and its subsidiaries are subject to the accounting and reporting requirements of the SEC. The accompanying Consolidated Financial Statements are prepared in conformity with GAAP. NSTAR's utility subsidiaries are subject to the application of ASC 980, Regulated Operations, which considers the effects of regulation resulting from differences in the timing of their recognition of certain revenues and expenses from those of other businesses and industries. The energy delivery business is subject to rate-regulation that is based on cost recovery and meets the criteria for application of ASC 980.   The preparation of financial statements in conformity with GAAP requires management of NSTAR and its subsidiaries to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. The results of operations for the three-month periods ended March 31, 2011 and 2010 are not indicative of the results that may be expected for an entire year. The demand for electricity and natural gas is affected by weather conditions, economic conditions, and consumer conservation behavior. Electric energy sales and revenues are typically higher in the winter and summer months than in the spring and fall months. Natural gas energy sales and revenues are typically higher in the winter months than during other periods of the year. 4. Pension and Postretirement Benefits Other than Pensions (PBOP) Plans NSTAR's net periodic Pension Plan and PBOP Plan benefit costs for the first quarter are based on the latest available participant census data. An annual actuarial valuation will be completed during the second quarter, and cost estimates will be adjusted based on the actual actuarial study results. NSTAR's Pension Plan and PBOP Plan assets are affected by fluctuations in the financial markets. Fluctuations in the fair value of the Pension Plan and PBOP Plan assets impact the funded status, accounting costs, and cash funding requirements of these Plans. The earnings impact of increased Pension and PBOP costs is substantially mitigated by NSTAR's DPU-approved Pension and PBOP rate adjustment mechanism (PAM). Under the PAM, NSTAR recovers its pension and PBOP expense through a reconciling rate mechanism. The PAM removes the volatility in earnings that could result from fluctuations in market conditions and plan experience. Pension NSTAR provides a defined benefit retirement plan, the NSTAR Pension Plan (the Plan), that covers substantially all employees. During the three months ended March 31, 2011, NSTAR contributed $32 million to the Plan. In addition, $6 million was contributed in April 2011. NSTAR currently anticipates making additional contributions of approximately $37 million to the Plan during the remainder of 2011. The actual level of funding may differ from this estimate. Components of net periodic pension benefit cost were as follows:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="82%"> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Service cost</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7.1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6.3</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Interest cost</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15.9</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16.2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Expected return on Plan assets</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(17.3</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(15.7</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Amortization of prior service credit</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.2</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.2</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Recognized actuarial loss</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12.0</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12.7</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr><td valign="top"> Net periodic pension benefit cost</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">17.5</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">19.3</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> Postretirement Benefits Other than Pensions NSTAR also provides health care and other benefits to retired employees who meet certain age and years of service eligibility requirements. Under certain circumstances, eligible retirees are required to contribute to the costs of postretirement benefits. During the three months ended March 31, 2011, NSTAR contributed $7.2 million to this plan. In addition, $2.4 million was contributed in April 2011. NSTAR currently anticipates contributing approximately $20.4 million for the remainder of 2011 toward these benefits. Postretirement benefit costs related to employees of the discontinued operations of MATEP for the three months ended March 31, 2010 are not included in the following table.   Components of net periodic postretirement benefit cost were as follows:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Service cost</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1.7</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1.6</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Interest cost</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">9.3</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">9.2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Expected return on Plan assets</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(5.9</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(5.1</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Amortization of prior service credit</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.4</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.4</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of transition obligation</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Recognized actuarial loss</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4.1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.9</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net periodic postretirement benefit cost</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">9.0</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">9.4</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> 5. Noncontrolling Interest – Cumulative Non-Mandatory Redeemable Preferred Stock of Subsidiary NSTAR Electric has two outstanding series of non-mandatory redeemable preferred stock. Both series are part of a class of NSTAR Electric's Cumulative Preferred Stock. Upon any liquidation of NSTAR Electric, holders of the Cumulative Preferred Stock are entitled to receive the liquidation preference for their shares before any distribution to the holder of the NSTAR Common Shares. The liquidation preference for each outstanding series of Cumulative Preferred Stock is equal to the par value ($100.00 per share) plus accrued and unpaid dividends. The dividends on NSTAR Electric's Cumulative Preferred Stock to the noncontrolling interest are reflected separately after net income and before net income attributable to common shareholders on the accompanying Consolidated Statements of Income. During the year ended December 31, 2010 and during the three months ended March 31, 2011, there were no changes in the noncontrolling interest of NSTAR Electric. NSTAR Electric's noncontrolling interest preferred stock is reflected as noncontrolling interest of a subsidiary in the accompanying Consolidated Balance Sheets outside of permanent equity. Each of the two preferred stock series contains provisions relating to non-payment of preferred dividends that could potentially result in the preferred shareholders being granted the majority control of the Board of Directors of NSTAR Electric until all preferred dividends are paid. As a result, the Cumulative Preferred Stock has not been classified within permanent equity. Non-mandatory redeemable series: Par value $100 per share, 2,890,000 shares authorized and 430,000 shares issued and outstanding: (in thousands, except per share amounts)   <table border="0" cellspacing="0" cellpadding="0" width="92%" align="center"> <tr><td width="26%"> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom" nowrap="nowrap" align="center"> Series</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Current Shares Outstanding</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Redemption Price/Share</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">March 31, 2011</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top" align="center"> 4.25%</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">180,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">103.625</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">18,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">18,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top" align="center"> 4.78%</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">250,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">102.80</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top" colspan="8"> Total non-mandatory redeemable series</td> <td valign="top">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">43,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">43,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table>   6. Interest Income and Other, net Major components of interest income and other, net were as follows:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="80%"> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="6%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Interest on regulatory deferrals</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">8,012</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6,693</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Income tax items</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">288</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">372</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other interest expense</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,035</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,186</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Short-term debt</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(230</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(216</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> AFUDC</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">95</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">220</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr><td valign="top"> Total interest income and other, net</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,130</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">5,883</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> 7. Variable Interest Entities NSTAR Electric has certain long-term purchase power agreements with energy facilities where it purchases substantially all of the output from a specified facility for a specified period and has determined these agreements represent variable interests. NSTAR Electric is not considered the primary beneficiary of these entities and does not consolidate the entities because it does not control the activities most relevant to the operating results of these entities and does not hold any equity interests in the entities. NSTAR Electric's exposure to risks and financial support commitments with respect to these entities is limited to the purchase of the power generated at the prices defined under the contractual agreements. NSTAR Electric's involvement with these variable interest entities has no material impact on NSTAR's financial position, financial performance, or cash flows. 8. Subsequent Events Management has reviewed subsequent events through the date of this filing and concluded that no material subsequent events have occurred that are not accounted for in the accompanying Consolidated Financial Statements or disclosed in the accompanying Notes to Consolidated Financial Statements. </div>Note A. Business Organization and Summary of Significant Accounting Policies 1. About NSTAR NSTAR (or the Company) is a holding company engaged through itsfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element may be used to describe the nature of the entity's business and to describe all significant accounting policies of the reporting entity.No authoritative reference available.falsefalseBusiness Organization and Summary of Significant Accounting Policies12Business Organization and Summary of Significant Accounting PoliciesUnKnownUnKnownUnKnownUnKnownfalsetrue XML 17 R12.xml IDEA: Earnings Per Common Share 2.2.0.25falsefalse10501 - Disclosure - Earnings Per Common Sharetruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0001035675duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0us-gaap_EarningsPerShareAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseEarnings Per Common Share3false0us-gaap_EarningsPerShareTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> Note E. Earnings Per Common Share Basic EPS is calculated by dividing net income attributable to common shareholders, which includes a deduction for preferred dividends of a subsidiary, by the weighted average common shares outstanding during the respective period. Diluted EPS is similar to the computation of basic EPS except that the weighted average common shares are increased to include the impact of potential (nonvested) shares and stock options granted (stock-based compensation) in accordance with NSTAR's Long Term Incentive Plan. The following table summarizes basic and diluted EPS:   <table border="0" cellspacing="0" cellpadding="0" width="76%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="6" align="center">Three Months Ended March 31,</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands, except per share amounts)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net income attributable to common shareholders</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">56,411</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">59,718</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Basic and Diluted EPS:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Continuing operations</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">0.54</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">0.51</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Discontinued operations</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.05</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total earnings</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">0.54</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">0.56</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr> <tr><td height="8"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td></tr> <tr><td valign="top"> Weighted average common shares outstanding for basic EPS</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">103,587</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">106,808</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Effect of dilutive shares:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Weighted average dilutive potential common shares</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">388</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">222</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Weighted average common shares outstanding for diluted EPS</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">103,975</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">107,030</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table> </div>Note E. 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Also includes reclassification adjustments out of other comprehensive income as a result of being recognized as components of net periodic benefit cost for the period.No authoritative reference available.falsefalsePension and postretirement benefits6false0nst_OtherComprehensiveIncomeLossFromContinuingOperationsDefinedBenefitPlansTaxnstfalsedebitdurationTax effects of the net changes to accumulated comprehensive income during the period related to benefit plans attributable to...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-144000-144falsefalsefalsefalsefalse2truefalsefalse-156000-156falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effects of the net changes to accumulated comprehensive income during the period related to benefit plans attributable to continuing operations.No authoritative reference available.falsefalseDeferred income tax expense7false0nst_OtherComprehensiveIncomeLossFromContinuingOperationsDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreasenstfalsecreditdurationNet changes to accumulated comprehensive income during the period related to benefit plans, after tax, attributable to...falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse213000213falsefalsefalsefalsefalse2truefalsefalse224000224falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNet changes to accumulated comprehensive income during the period related to benefit plans, after tax, attributable to continuing operations.No authoritative reference available.truefalseTotal other comprehensive income from continuing operations, net8false0nst_ComprehensiveIncomeFromContinuingOperationsnstfalsecreditdurationComprehensive income from continuing operationsfalsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse5662400056624falsefalsefalsefalsefalse2truefalsefalse5994200059942falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryComprehensive income from continuing operationsNo authoritative reference available.truefalseComprehensive income from continuing operations9true0nst_OtherComprehensiveIncomeLossFromDiscontinuedOperationsNetOfTaxAbstractnstfalsenadurationOther comprehensive income loss from discontinued operations net of tax.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringOther comprehensive income loss from discontinued operations net of tax.falsefalseOther comprehensive income from discontinued operations, net:10false0nst_OtherComprehensiveIncomeLossFromDiscontinuedOperationsDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreasenstfalsecreditdurationAmounts recognized in other comprehensive income attributable to discontinued operations (but not yet recognized in net...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse2600026falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmounts recognized in other comprehensive income attributable to discontinued operations (but not yet recognized in net periodic benefit cost), including the net gain (loss) and net prior service cost (credit) arising during the period. Also includes reclassification adjustments out of other comprehensive income as a result of being recognized as components of net periodic benefit cost for the period.No authoritative reference available.falsefalsePostretirement benefits11false0nst_OtherComprehensiveIncomeLossFromDiscontinuedOperationsDefinedBenefitPlansTaxnstfalsedebitdurationTax effects of the net changes to accumulated comprehensive income during the period related to benefit plans attributable to...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-11000-11falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effects of the net changes to accumulated comprehensive income during the period related to benefit plans attributable to discontinued operations.No authoritative reference available.falsefalseDeferred income tax expense12false0nst_OtherComprehensiveIncomeLossFromDiscontinuedOperationsDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreasenstfalsecreditdurationNet changes to accumulated comprehensive income during the period related to benefit plans, after tax, attributable to...falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse1500015falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNet changes to accumulated comprehensive income during the period related to benefit plans, after tax, attributable to discontinued operations.No authoritative reference available.truefalseTotal other comprehensive income from discontinued operations, net13false0us-gaap_ComprehensiveIncomeNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse5662400056624falsetruefalsefalsefalse2truefalsefalse5995700059957falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A5 -Appendix A Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 30 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 8, 9, 10, 11, 12, 13, 14 truefalseComprehensive income212Consolidated Statements of Comprehensive Income (USD $)ThousandsUnKnownUnKnownUnKnownfalsetrue XML 19 R14.xml IDEA: Fair Value Measurements 2.2.0.25falsefalse10701 - Disclosure - Fair Value Measurementstruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0001035675duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair Value Measurements3false0us-gaap_FairValueDisclosuresTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> Note G. Fair Value Measurements NSTAR follows a fair value hierarchy that prioritizes the inputs used to determine fair value and requires the Company to classify assets and liabilities carried at fair value based on the observability of these inputs. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The three levels of the fair value hierarchy are: Level 1 – Unadjusted quoted prices available in active markets for identical assets or liabilities as of the reporting date. Financial assets utilizing Level 1 inputs include active exchange-traded equity securities. Level 2 – Quoted prices available in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, inputs other than quoted prices that are directly observable, and inputs derived principally from market data. Level 3 – Unobservable inputs from objective sources. These inputs may be based on entity-specific inputs. Level 3 inputs include all inputs that do not meet the requirements of Level 1 or Level 2. Gas hedges were valued at calculated settlement prices. The renewable energy contract was valued based on the difference between the contracted price and the estimated fair value of remaining contracted supply to be purchased. Inputs used to develop the estimate included on-line regional generation and forecasted demand.   The following represents the fair value hierarchy of NSTAR's financial assets and liabilities that were recognized at fair value on a recurring basis as of March 31, 2011 and December 31, 2010. Financial assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurement. Recurring Fair Value Measures:   <table border="0" cellspacing="0" cellpadding="0" width="92%" align="center"> <tr><td width="77%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">March 31, 2011</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 1</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 2</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 3</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Government Money Market Securities(a) </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred Compensation Assets ( b ) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Investments ( b ) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr> <tr><td height="8"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td></tr> <tr><td valign="top"> Liabilities:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gas Hedges ( c ) </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Renewable Energy Contract ( d ) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="16"> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">December 31, 2010</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in millions)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 1</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 2</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Level 3</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Government Money Market Securities(a) </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred Compensation Assets ( b ) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Investments ( b ) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr> <tr><td height="8"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td> <td height="8" colspan="4"> </td></tr> <tr><td valign="top"> Liabilities:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gas Hedges ( c ) </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Renewable Energy Contract (d) </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td style="border-top: #000000 1px solid;" valign="bottom"> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—  </td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">8</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td> <td valign="bottom">  </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td style="border-top: #000000 3px double;" valign="bottom"> </td> <td> </td></tr></table>   <table border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="2%"> </td> <td valign="bottom" width="1%"> </td> <td> </td> <td valign="bottom" width="1%"> </td> <td width="96%"> </td></tr> <tr><td valign="top">(a)</td> <td valign="bottom">  </td> <td valign="top">-</td> <td valign="bottom">  </td> <td valign="top">Included in "Cash and cash equivalents" on the accompanying Consolidated Balance Sheets</td></tr> <tr><td valign="top">(b)</td> <td valign="bottom">  </td> <td valign="top">-</td> <td valign="bottom">  </td> <td valign="top">Included in "Other investments" on the accompanying Consolidated Balance Sheets</td></tr> <tr><td valign="top">(c)</td> <td valign="bottom">  </td> <td valign="top">-</td> <td valign="bottom">  </td> <td valign="top">Included in "Deferred debits: Other deferred debits" and "Current liabilities: Power contract obligations" on the accompanying Balance Sheets</td></tr> <tr><td valign="top">(d)</td> <td valign="bottom">  </td> <td valign="top">-</td> <td valign="bottom">  </td> <td valign="top">Included in "Deferred credits and other liabilities: Power contract obligations" on the accompanying Consolidated Balance Sheets</td></tr></table> Fair Value of Financial Instruments The carrying amounts for cash and cash equivalents, net accounts receivable, other current assets, certain current liabilities, and notes payable as of March 31, 2011 and December 31, 2010, respectively, approximate fair value due to the short-term nature of these securities. The fair values of long-term indebtedness (excluding notes payable, including current maturities) are based on the quoted market prices of similar issues. Carrying amounts and fair values as of March 31, 2011 and December 31, 2010 were as follows:   <table border="0" cellspacing="0" cellpadding="0" width="92%" align="center"> <tr><td width="56%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="6" align="center">March 31, 2011</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="6" align="center">December 31, 2010</td> <td valign="bottom"> </td></tr> <tr><td valign="bottom" nowrap="nowrap"> (in thousands)</td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Carrying Amount</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Fair Value</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Carrying Amount</td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Fair Value</td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Long-term indebtedness of continuing operations (including current maturities)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,327,338</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,483,780</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,348,925</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,545,200</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div>Note G. Fair Value Measurements NSTAR follows a fair value hierarchy that prioritizes the inputs used to determine fair value and requires the Company tofalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis item represents the complete disclosure regarding the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the Company is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risk is are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15B -Subparagraph a, b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 3, 10, 14, 15 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44A, 44B Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32, 33, 34 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15C, 15D Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15A -Subparagraph a-d Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 17-22, 27, 28 falsefalseFair Value Measurements12Fair Value MeasurementsUnKnownUnKnownUnKnownUnKnownfalsetrue ZIP 20 0001193125-11-128315-xbrl.zip IDEA: XBRL DOCUMENT begin 644 0001193125-11-128315-xbrl.zip M4$L#!!0````(``E[I3Y*)K.T;VH``#CS!``0`!P`;G-T+3(P,3$P,S,Q+GAM M;%54"0`#8?G"36'YPDUU>`L``00E#@``!#D!``#L76MSV\;5_MZ9_(_ M[/^UV?S/J_.W(DR#(E9)+H),R5R%8JKSD3C,4F,&.E.B?RW.]43EXB(=Y%,) M5^SZ8K/5:6UV>[NMWO/=[6TQRO/Q7KL]G4Y;&3Y@[/VM((V;3;OE*VE@"WB8 M]NZUNOZ70[M]FNR)K?9FN]?I=L76WN;.WL9S7@0C%H9_.U4`0D_?RZ[%ZV3`Z'D=X6+HVRM3@90,>;N+A.AL;W=:5"1NB MS>N@'J5)KJY`7560@Y:2WL`O@;VLPY>-`_/A=/!AX\-&]P.N\L$>YL-%#AJ( MMG#\>Z'SZ\,T'J<)?#4'5]KXN\Y5+G6BPF.9)6!7YIV*^RKC@\!&<#\\:[_! 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