10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 _________________________________________

FORM 10-Q

 _________________________________________

(Mark One)

x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2017

OR

o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from _______ to _______

Commission File Number 1-16417

_________________________________________

NUSTAR ENERGY L.P.

(Exact name of registrant as specified in its charter)

_________________________________________

Delaware	74-2956831
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
19003 IH-10 West San Antonio, Texas	78257
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code (210) 918-2000

 _________________________________________

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

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

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

Large accelerated filer	x	Accelerated filer	o
Non-accelerated filer	o  (Do not check if a smaller reporting company)	Smaller reporting company	o
		Emerging growth company	o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.    o

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

The number of common units outstanding as of July 31, 2017 was 93,031,036.

NUSTAR ENERGY L.P.

FORM 10-Q

TABLE OF CONTENTS

PART I – FINANCIAL INFORMATION
Item 1.	Financial Statements:
	Consolidated Balance Sheets as of June 30, 2017 and December 31, 2016	3
	Condensed Consolidated Statements of Comprehensive Income for the Three and Six Months Ended June 30, 2017 and 2016	4
	Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2017 and 2016	5
	Condensed Notes to Consolidated Financial Statements	6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	29
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	44
Item 4.	Controls and Procedures	47
PART II – OTHER INFORMATION
Item 6.	Exhibits	48
SIGNATURES		49

2

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(Thousands of Dollars, Except Unit Data)

	June 30, 2017			December 31, 2016
	(Unaudited)
Assets
Current assets:
Cash and cash equivalents	$	29,191		$	35,942
Accounts receivable, net of allowance for doubtful accounts of $7,768 and $7,756 as of June 30, 2017 and December 31, 2016, respectively	147,548			170,293
Receivable from related party	86			317
Inventories	25,772			37,945
Other current assets	28,265			132,686
Total current assets	230,862			377,183
Property, plant and equipment, at cost	5,974,427			5,435,278
Accumulated depreciation and amortization	(1,827,094		)	(1,712,995		)
Property, plant and equipment, net	4,147,333			3,722,283
Intangible assets, net	857,616			127,083
Goodwill	1,023,359			696,637
Deferred income tax asset	1,359			2,051
Other long-term assets, net	98,795			105,308
Total assets	$	6,359,324		$	5,030,545
Liabilities and Partners’ Equity
Current liabilities:
Accounts payable	$	92,668		$	118,686
Short-term debt	45,000			54,000
Current portion of long-term debt	403,075			—
Accrued interest payable	40,232			34,030
Accrued liabilities	55,986			60,485
Taxes other than income tax	16,709			15,685
Income tax payable	847			6,510
Total current liabilities	654,517			289,396
Long-term debt	3,073,864			3,014,364
Deferred income tax liability	22,863			22,204
Other long-term liabilities	107,031			92,964
Commitments and contingencies (Note 5)
Partners’ equity:
Series A preferred limited partners (9,060,000 preferred units outstanding as of June 30, 2017 and December 31, 2016)	218,340			218,400
Series B preferred limited partners (15,400,000 preferred units outstanding as of June 30, 2017)	371,613			—
Common limited partners (93,030,988 and 78,616,228 common units outstanding as of June 30, 2017 and December 31, 2016, respectively)	1,958,435			1,455,642
General partner	41,944			31,752
Accumulated other comprehensive loss	(89,283		)	(94,177		)
Total partners’ equity	2,501,049			1,611,617
Total liabilities and partners’ equity	$	6,359,324		$	5,030,545

See Condensed Notes to Consolidated Financial Statements.

3

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited, Thousands of Dollars, Except Unit and Per Unit Data)

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
Revenues:
Service revenues	$	283,700		$	270,403		$	550,162		$	536,969
Product sales	151,788			167,401			372,756			306,538
Total revenues	435,488			437,804			922,918			843,507
Costs and expenses:
Cost of product sales	144,479			157,617			352,285			286,607
Operating expenses:
Third parties	116,400			112,662			217,426			196,202
Related party	—			—			—			21,681
Total operating expenses	116,400			112,662			217,426			217,883
General and administrative expenses:
Third parties	33,604			22,657			58,199			35,949
Related party	—			—			—			10,493
Total general and administrative expenses	33,604			22,657			58,199			46,442
Depreciation and amortization expense	67,601			53,651			124,465			106,793
Total costs and expenses	362,084			346,587			752,375			657,725
Operating income	73,404			91,217			170,543			185,782
Interest expense, net	(45,612		)	(34,229		)	(82,026		)	(68,352		)
Other income (expense), net	88			(201		)	228			(372		)
Income before income tax expense	27,880			56,787			88,745			117,058
Income tax expense	1,630			4,270			4,555			7,140
Net income	$	26,250		$	52,517		$	84,190		$	109,918
Basic and diluted net income per common unit (Note 11)	$	0.05		$	0.52		$	0.51		$	1.09
Basic weighted-average common units outstanding	90,345,469			77,886,219			84,526,506			77,886,148
Diluted weighted-average common units outstanding	90,345,469			77,939,279			84,526,506			77,943,702
Comprehensive income	$	27,381		$	29,178		$	89,084		$	71,801

See Condensed Notes to Consolidated Financial Statements.

4

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited, Thousands of Dollars)

	Six Months Ended June 30,
	2017			2016
Cash Flows from Operating Activities:
Net income	$	84,190		$	109,918
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	124,465			106,793
Unit-based compensation expense	5,117			2,869
Amortization of debt related items	3,146			3,965
Gain from sale or disposition of assets	(36		)	(2		)
Deferred income tax expense	23			2,562
Changes in current assets and current liabilities (Note 12)	(15,344		)	(15,274		)
Other, net	7,427			4,202
Net cash provided by operating activities	208,988			215,033
Cash Flows from Investing Activities:
Capital expenditures	(108,849		)	(95,361		)
Change in accounts payable related to capital expenditures	6,851			(12,674		)
Proceeds from sale or disposition of assets	1,966			—
Proceeds from Axeon term loan	110,000			—
Acquisitions	(1,476,719		)	—
Net cash used in investing activities	(1,466,751		)	(108,035		)
Cash Flows from Financing Activities:
Proceeds from long-term debt borrowings	1,037,161			348,904
Proceeds from short-term debt borrowings	565,000			279,000
Proceeds from note offering, net of issuance costs	543,313			—
Long-term debt repayments	(1,122,239		)	(184,192		)
Short-term debt repayments	(574,000		)	(363,000		)
Proceeds from issuance of preferred units, net of issuance costs	371,802			—
Proceeds from issuance of common units, net of issuance costs	643,858			—
Contributions from general partner	13,597			—
Distributions to preferred unitholders	(10,696		)	—
Distributions to common unitholders and general partner	(216,139		)	(196,102		)
Increase (decrease) in cash book overdrafts	1,321			(11,166		)
Other, net	(2,615		)	(674		)
Net cash provided by (used in) financing activities	1,250,363			(127,230		)
Effect of foreign exchange rate changes on cash	649			4,389
Net decrease in cash and cash equivalents	(6,751		)	(15,843		)
Cash and cash equivalents as of the beginning of the period	35,942			118,862
Cash and cash equivalents as of the end of the period	$	29,191		$	103,019

See Condensed Notes to Consolidated Financial Statements.

5

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. ORGANIZATION AND BASIS OF PRESENTATION

Organization and Operations

NuStar Energy L.P. (NYSE: NS) is a publicly held Delaware limited partnership engaged in the transportation of petroleum products and anhydrous ammonia, and the terminalling, storage and marketing of petroleum products. Unless otherwise indicated, the terms “NuStar Energy,” “NS,” “the Partnership,” “we,” “our” and “us” are used in this report to refer to NuStar Energy L.P., to one or more of our consolidated subsidiaries or to all of them taken as a whole. NuStar GP Holdings, LLC (NuStar GP Holdings or NSH) (NYSE: NSH) owns our general partner, Riverwalk Logistics, L.P., and owns an approximate 11% common limited partner interest in us as of June 30, 2017.

We conduct our operations through our subsidiaries, primarily NuStar Logistics, L.P. (NuStar Logistics) and NuStar Pipeline Operating Partnership L.P. (NuPOP). We have three business segments: pipeline, storage and fuels marketing.

Recent Developments

Navigator Acquisition and Financing Transactions. On May 4, 2017, we completed the acquisition of Navigator Energy Services, LLC for approximately $1.5 billion (the Navigator Acquisition), subject to customary adjustments at and following closing. In order to fund the purchase price, we issued 14,375,000 common units for net proceeds of $657.5 million, issued $550.0 million of 5.625% senior notes for net proceeds of $543.3 million and issued 15,400,000 of our 7.625% Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units (Series B Preferred Units) for net proceeds of $371.8 million. Please refer to Notes 3, 4 and 10 for further discussion.

Axeon Term Loan. On February 22, 2017, we settled and terminated the $190.0 million term loan to Axeon Specialty Products, LLC (the Axeon Term Loan), pursuant to which we also provided credit support, such as guarantees, letters of credit and cash collateral, as applicable, of up to $125.0 million to Axeon Specialty Products, LLC (Axeon). We received $110.0 million in settlement of the Axeon Term Loan, and our obligation to provide ongoing credit support to Axeon ceased. Please refer to Note 6 for further discussion of the Axeon Term Loan and credit support.

Basis of Presentation

These unaudited condensed consolidated financial statements include the accounts of the Partnership and subsidiaries in which the Partnership has a controlling interest. Inter-partnership balances and transactions have been eliminated in consolidation.

These unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information and with the instructions to the Quarterly Report on Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, they do not include all of the information and notes required by GAAP for complete consolidated financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation have been included, and all disclosures are adequate. All such adjustments are of a normal recurring nature unless disclosed otherwise. Financial information for the three and six months ended June 30, 2017 and 2016 included in these Condensed Notes to Consolidated Financial Statements is derived from our unaudited condensed consolidated financial statements. Operating results for the three and six months ended June 30, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017. The consolidated balance sheet as of December 31, 2016 has been derived from the audited consolidated financial statements as of that date. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2016.

2. NEW ACCOUNTING PRONOUNCEMENTS

Unit-Based Payments

In May 2017, the Financial Accounting Standards Board (FASB) issued amended guidance that clarifies when a change to the terms and conditions of a unit-based payment award is accounted for as a modification. Under the amended guidance, an entity will apply modification accounting if the value, vesting or classification of the unit-based payment award changes. The guidance is effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied prospectively. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures.

6

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Defined Benefit Plans

In March 2017, the FASB issued amended guidance that changes the presentation of net periodic pension cost related to defined benefit plans. Under the amended guidance, the service cost component of net periodic benefit cost will be presented in the same income statement line items as other current employee compensation costs, but the remaining components of net periodic benefit cost will be presented outside of operating income. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied retrospectively. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures.

Goodwill

In January 2017, the FASB issued amended guidance that simplifies the accounting for goodwill impairment by eliminating step 2 of the goodwill impairment test. Under the amended guidance, goodwill impairment will be measured as the excess of the reporting unit’s carrying value over its fair value, not to exceed the carrying amount of goodwill for that reporting unit. The changes are effective for annual and interim periods beginning after December 15, 2019, and amendments should be applied prospectively. Early adoption is permitted for any impairment tests performed after January 1, 2017, and we are currently evaluating whether we will adopt these provisions early. Regardless of our decision, we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures.

Definition of a Business

In January 2017, the FASB issued amended guidance that clarifies the definition of a business used in evaluating whether a set of transferred assets and activities constitutes a business. Under the amended guidance, if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, the set of transferred assets and activities would not represent a business. To be considered a business, the set of assets transferred is also required to include at least one substantive process that together significantly contribute to the ability to create outputs. In addition, the amended guidance narrows the definition of outputs to be consistent with how outputs are described in the new revenue recognition standard. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied prospectively. We are currently evaluating whether we will early adopt these provisions. We do not expect the guidance to have a material impact on our financial position, results of operations or disclosures.

Statement of Cash Flows

In August 2016, the FASB issued amended guidance that clarifies how entities should present certain cash receipts and cash payments on the statement of cash flows, including but not limited to debt prepayment or debt extinguishment costs, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims and distributions received from equity method investees. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied retrospectively. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our statements of cash flows or disclosures.

Credit Losses

In June 2016, the FASB issued amended guidance that requires the use of a “current expected loss” model for financial assets measured at amortized cost and certain off-balance sheet credit exposures. Under this model, entities will be required to estimate the lifetime expected credit losses on such instruments based on historical experience, current conditions, and reasonable and supportable forecasts. This amended guidance also expands the disclosure requirements to enable users of financial statements to understand an entity’s assumptions, models and methods for estimating expected credit losses. The changes are effective for annual and interim periods beginning after December 15, 2019, and amendments should be applied using a modified retrospective approach. We currently expect to adopt the amended guidance on January 1, 2020 and are assessing the impact of this amended guidance on our financial position, results of operations and disclosures. We plan to provide additional information about the expected financial impact at a future date.

Leases

In February 2016, the FASB issued amended guidance that requires lessees to recognize the assets and liabilities that arise from most leases on the balance sheet. For lessors, this amended guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. The changes are effective for annual and interim periods beginning after December 15,

2018, and amendments should be applied using a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements, with the option to use certain expedients. We currently expect to adopt these provisions on January 1, 2019. We have initiated a project to assess the impact of this amended guidance on our financial position, results of operations, disclosures and internal controls and plan to provide additional information about the expected financial impact at a future date.

7

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Financial Instruments

In January 2016, the FASB issued new guidance that addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures.

Revenue Recognition

In May 2014, the FASB and the International Accounting Standards Board jointly issued a comprehensive new revenue recognition standard. In August 2015, the FASB deferred the effective date by one year. The standard is now effective for public entities for annual and interim periods beginning after December 15, 2017, using one of two retrospective transition methods. Early adoption is permitted, but not before the original effective date. The FASB has subsequently issued several updates that amend and/or clarify the new revenue recognition standard. We expect to complete implementation of the new revenue recognition standard by the end of 2017. Based on our analysis completed to date, we do not believe the standard will significantly impact the amount or timing of revenues recognized under the vast majority of our revenue contracts. We currently expect to adopt the new guidance using the modified retrospective approach, under which the cumulative effect of initially applying the new guidance is recognized as an adjustment to the opening balance of retained earnings, in the first quarter of 2018. We are continuing to evaluate the impact of this new guidance on our financial position, results of operations and disclosures, including customer contracts associated with our recently closed Navigator Acquisition.

3. ACQUISITIONS

Navigator Acquisition

On April 11, 2017, we entered into a Membership Interest Purchase and Sale Agreement (the Acquisition Agreement) with FR Navigator Holdings LLC to acquire all of the issued and outstanding limited liability company interests in Navigator Energy Services, LLC (Navigator) for approximately $1.5 billion, subject to customary adjustments at and following closing. We closed on the Navigator Acquisition on May 4, 2017 and funded the purchase price with the net proceeds of the equity and debt issuances described in Notes 4 and 10. We acquired crude oil transportation, pipeline gathering and storage assets located in the Midland Basin of West Texas consisting of: (i) more than 500 miles of crude oil gathering and transportation pipelines with approximately 92,000 barrels per day ship-or-pay volume commitments and deliverability of approximately 412,000 barrels per day; (ii) a pipeline gathering system with more than 200 connected producer tank batteries capable of more than 400,000 barrels per day of pumping capacity covering over 500,000 dedicated acres with fixed fee contracts; and (iii) approximately 1.0 million barrels of crude oil storage capacity with 440,000 barrels contracted to third parties. We collectively refer to the acquired assets as our Permian Crude System. The assets acquired are included in our pipeline segment.

The Navigator Acquisition broadens our geographic footprint by marking our entry into the Permian Basin and complements our existing asset base. We believe the Permian Crude System will provide a strong growth platform that, when coupled with our assets in the Eagle Ford region, serve to solidify our presence in two of the most prolific basins in the United States.

8

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

We accounted for the Navigator Acquisition using the acquisition method. The estimates of fair value of the assets acquired and liabilities assumed are based on preliminary assumptions, pending the completion of an independent appraisal and other evaluations as information becomes available to us. The following table reflects the preliminary purchase price allocation:

	Preliminary Purchase Price Allocation
	(Thousands of Dollars)
Accounts receivable	$	4,916
Other current assets	2,476
Property, plant and equipment, net	396,603
Intangible assets (a)	750,000
Goodwill (b)	326,722
Other long-term assets, net	2,125
Current liabilities	(26,971		)
Preliminary purchase price allocation, net of cash acquired	1,455,871
Pending closing adjustment	20,848
Cash disbursed at closing	$	1,476,719

(a) Intangible assets, which consist of customer contracts and relationships, are expected to be amortized over a weighted average period of 20 years.

(b) The goodwill acquired represents the expected benefit from entering new geographic areas and the anticipated opportunities to generate future cash flows from the assets acquired and potential future projects.

The values used in the purchase price allocation above and estimated useful lives are preliminary and subject to change after we finalize our review of the specific types, nature and condition of Navigator’s property, plant and equipment and intangible assets and pending the completion of an independent appraisal. A change in the value used for property, plant and equipment or intangible assets may be significant and would cause a corresponding increase or decrease in goodwill.

The condensed statements of income include the results of operations for the Navigator commencing on May 4, 2017. For the three months ended June 30, 2017, we recognized $9.5 million in revenues and an operating loss of $3.4 million related to the Navigator Acquisition. Additionally, we incurred transaction costs of $10.2 million included in “General and administrative expenses” and $3.7 million included in “Interest expense, net” on the condensed consolidated statements of comprehensive income for the three months ended June 30, 2017.

The unaudited pro forma information for the three and six months ended June 30, 2017 and 2016 presented below combines the historical financial information for Navigator and the Partnership for those periods. The information assumes we completed the Navigator Acquisition on January 1, 2016 and the following:

• we issued approximately 14.4 million common units;

• we received a contribution from our general partner of $13.6 million to maintain its 2% interest;

• we issued 15.4 million Series B Preferred Units;

• we issued $550.0 million of 5.625% senior notes;

• additional depreciation and amortization that would have been incurred assuming the fair value adjustments to property, plant and equipment and intangible assets reflected in the preliminary purchase price allocation above have been applied; and

• we satisfied Navigator’s outstanding obligations under its revolving credit agreement.

	Three Months Ended June 30,					Six Months Ended June 30,
	2017			2016		2017		2016
	(Thousands of Dollars, Except Per Unit Data)
Revenues	$	439,933		$	443,314	$	937,317	$	852,169
Net income	$	21,211		$	33,378	$	63,659	$	70,118
Basic and diluted net (loss) income per common unit	$	(0.03	)	$	0.15	$	0.16	$	0.34

9

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

The pro forma information for the three and six months ended June 30, 2017 includes transaction costs of approximately $14.0 million, which were directly attributable to the Navigator Acquisition. The pro forma information is unaudited and is not necessarily indicative of the results of operations that actually would have resulted had the Navigator Acquisition occurred on January 1, 2016 or that may result in the future.

4. DEBT

Issuance of 5.625% Senior Notes

OnApril 28, 2017, NuStar Logistics issued$550.0 millionof5.625%senior notes dueApril 28, 2027. We used the net proceeds of$543.3 millionfrom the offering to fund a portion of the purchase price for the Navigator Acquisition and to pay related fees and expenses. The interest on the 5.625% senior notes is payable semi-annually in arrears on April 28 and October 28 of each year beginning on October 28, 2017. The 5.625% senior notes do not have sinking fund requirements. These notes rank equally with existing senior unsecured indebtedness and senior to existing subordinated indebtedness of NuStar Logistics. The 5.625% senior notes contain restrictions on NuStar Logistics’ ability to incur secured indebtedness unless the same security is also provided for the benefit of holders of the senior notes. In addition, the senior notes limit NuStar Logistics’ ability to incur indebtedness secured by certain liens, engage in certain sale-leaseback transactions and engage in certain consolidations, mergers or asset sales. The5.625%senior notes are fully and unconditionally guaranteed by NuStar Energy and NuPOP.

At the option of NuStar Logistics, the 5.625% senior notes may be redeemed in whole or in part at any time at a redemption price, plus accrued and unpaid interest to the redemption date. If we undergo a change of control, followed by a ratings decline within 60 days of a change of control, each holder of the notes may require us to repurchase all or a portion of its notes at a price equal to 101% of the principal amount of the notes, plus any accrued and unpaid interest to the date of repurchase.

Revolving Credit Agreement

During the six months ended June 30, 2017, the balance under our $1.5 billionfive-year revolving credit agreement (the Revolving Credit Agreement) decreased by $74.2 million. The Revolving Credit Agreement matures on October 29, 2019 and bears interest, at our option, based on an alternative base rate, a LIBOR-based rate or a EURIBOR-based rate. The interest rate on the Revolving Credit Agreement is subject to adjustment if our debt rating is downgraded (or upgraded) by certain credit rating agencies. As of June 30, 2017, our weighted-average interest rate related to borrowings under the Revolving Credit Agreement was 2.8%, and we had $764.8 million outstanding.

As of June 30, 2017, our consolidated debt coverage ratio (as defined in the Revolving Credit Agreement) could not exceed 5.50-to-1.00 as a result of the Navigator Acquisition. The requirement not to exceed a maximum consolidated debt coverage ratio may limit the amount we can borrow under the Revolving Credit Agreement to an amount less than the total amount available for borrowing. As of June 30, 2017, letters of credit issued under the Revolving Credit Agreement totaled $7.7 million, and we had $727.5 million available for borrowing. We believe that we are in compliance with the covenants in the Revolving Credit Agreement as of June 30, 2017.

Gulf Opportunity Zone Revenue Bonds

In 2008, 2010 and 2011, the Parish of St. James, Louisiana issued, pursuant to the Gulf Opportunity Zone Act of 2005, an aggregate $365.4 million of tax-exempt revenue bonds (the GoZone Bonds) associated with our St. James, Louisiana terminal expansions. The GoZone Bonds bear interest based on a weekly tax-exempt bond market interest rate, and interest is paid monthly. The weighted-average interest rate was 0.9% as of June 30, 2017. Following the issuances, the proceeds were deposited with a trustee and are disbursed to us upon our request for reimbursement of expenditures related to our St. James terminal expansions. We include the amount remaining in trust in “Other long-term assets, net,” and we include the amount of bonds issued in “Long-term debt” on the consolidated balance sheets. For the six months ended June 30, 2017, we did not receive any proceeds from the trustee, and as of June 30, 2017, the amount remaining in trust totaled $42.4 million.

Receivables Financing Agreement

NuStar Energy and NuStar Finance LLC (NuStar Finance), a special purpose entity and wholly owned subsidiary of NuStar Energy, are parties to a $125.0 million receivables financing agreement with third-party lenders (the Receivables Financing Agreement) and agreements with certain of NuStar Energy’s wholly owned subsidiaries (collectively with the Receivables Financing Agreement, the Securitization Program). NuStar Finance’s sole business consists of purchasing receivables from certain of NuStar Energy’s wholly owned subsidiaries and providing these receivables as collateral under the Securitization Program. NuStar Finance is a separate legal entity and the assets of NuStar Finance, including these accounts receivable, are not available to satisfy the claims of creditors of NuStar Energy, its subsidiaries selling receivables under the Securitization

10

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Program or their affiliates. The amount available for borrowing is based on the availability of eligible receivables and other customary factors and conditions.

Borrowings by NuStar Finance under the Receivables Financing Agreement bear interest at either the applicable commercial paper rate or the applicable bank rate, each as defined under the Receivables Financing Agreement. The Securitization Program has an initial termination date of June 15, 2018, with the option to renew for additional 364-day periods thereafter. As of June 30, 2017, $81.7 million of our accounts receivable are included in the Securitization Program. The amount of borrowings outstanding under the Receivables Financing Agreement totaled $53.3 million as of June 30, 2017, which is included in “Current portion of long-term debt” on the consolidated balance sheet.

5. COMMITMENTS AND CONTINGENCIES

We have contingent liabilities resulting from various litigation, claims and commitments. We record accruals for loss contingencies when losses are considered probable and can be reasonably estimated. Legal fees associated with defending the Partnership in legal matters are expensed as incurred. We had an accrual of $1.7 million for contingent losses as of June 30, 2017 and none as of December 31, 2016. The amount that will ultimately be paid may differ from the recorded accruals, and the timing of such payments is uncertain. In addition, due to the inherent uncertainty of litigation, there can be no assurance that the resolution of any particular claim or proceeding would not have a material adverse effect on our results of operations, financial position or liquidity.

6. FAIR VALUE MEASUREMENTS

We segregate the inputs used in measuring fair value into three levels: Level 1, defined as observable inputs, such as quoted prices for identical assets or liabilities in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable, such as quoted prices for similar assets or liabilities in active markets or quoted prices for identical assets or liabilities in markets that are not active; and Level 3, defined as unobservable inputs for which little or no market data exists. We consider counterparty credit risk and our own credit risk in the determination of all estimated fair values.

Recurring Fair Value Measurements

The following assets and liabilities are measured at fair value on a recurring basis:

	June 30, 2017
	Level 1			Level 2			Level 3		Total
	(Thousands of Dollars)
Assets:
Other current assets:
Product imbalances	$	5,249		$	—		$	—	$	5,249
Total	$	5,249		$	—		$	—	$	5,249
Liabilities:
Accrued liabilities:
Product imbalances	$	(3,031	)	$	—		$	—	$	(3,031	)
Commodity derivatives	(451		)	—			—		(451		)
Interest rate swaps	—			(6,392		)	—		(6,392		)
Other long-term liabilities:
Interest rate swaps	—			(2,867		)	—		(2,867		)
Total	$	(3,482	)	$	(9,259	)	$	—	$	(12,741	)

11

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

	December 31, 2016
	Level 1			Level 2			Level 3			Total
	(Thousands of Dollars)
Assets:
Other current assets:
Product imbalances	$	1,551		$	—		$	—		$	1,551
Commodity derivatives	—			155			—			155
Other long-term assets, net:
Interest rate swaps	—			1,314			—			1,314
Total	$	1,551		$	1,469		$	—		$	3,020
Liabilities:
Accrued liabilities:
Product imbalances	$	(1,577	)	$	—		$	—		$	(1,577	)
Commodity derivatives	(4,887		)	(165		)	—			(5,052		)
Other long-term liabilities:
Guarantee liability	—			—			(1,230		)	(1,230		)
Interest rate swaps	—			(2,632		)	—			(2,632		)
Total	$	(6,464	)	$	(2,797	)	$	(1,230	)	$	(10,491	)

Product Imbalances.Since we value our assets and liabilities related to product imbalances using quoted market prices in active markets as of the reporting date, we include these product imbalances in Level 1 of the fair value hierarchy.

Commodity Derivatives.We base the fair value of certain of our commodity derivative instruments on quoted prices on an exchange; accordingly, we include these items in Level 1 of the fair value hierarchy. We also have derivative instruments for which we determine fair value using industry pricing services and other observable inputs, such as quoted prices on an exchange for similar derivative instruments, and we include these derivative instruments in Level 2 of the fair value hierarchy. See Note 7 for a discussion of our derivative instruments.

Interest Rate Swaps.Becausewe estimate the fair value of our forward-starting interest rate swaps using discounted cash flows, which use observable inputs such as time to maturity and market interest rates, we include these interest rate swaps in Level 2 of the fair value hierarchy.

Guarantees. In 2014, we sold our remaining 50% ownership interest in Axeon and agreed to provide them with credit support, such as guarantees, letters of credit and cash collateral, as applicable, of up to $125.0 million. As of December 31, 2016, we provided guarantees totaling $54.1 million, and one guarantee that did not specify a maximum amount. Our estimate of the fair value was based on significant inputs not observable in the market and thus fell within Level 3 of the fair value hierarchy. In conjunction with the termination of the Axeon Term Loan discussed in the following section, our obligation to provide credit support to Axeon ceased.

Fair Value of Financial Instruments

We recognize cash equivalents, receivables, payables and debt in our consolidated balance sheets at their carrying amounts. The fair values of these financial instruments, except for long-term debt, approximate their carrying amounts.

The estimated fair values and carrying amounts of long-term debt, including the current portion, and the Axeon Term Loan were as follows:

	June 30, 2017		December 31, 2016
	Long-term Debt		Long-term Debt		Axeon Term Loan
	(Thousands of Dollars)
Fair value	$	3,591,708	$	3,084,762	$	110,000
Carrying amount	$	3,476,939	$	3,014,364	$	110,000

12

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Long-term Debt. We estimated the fair value of our publicly traded senior notes based upon quoted prices in active markets; therefore, we determined that the fair value of our publicly traded senior notes falls in Level 1 of the fair value hierarchy. For our other debt, for which a quoted market price is not available, we estimated the fair value using a discounted cash flow analysis using current incremental borrowing rates for similar types of borrowing arrangements and determined that the fair value falls in Level 2 of the fair value hierarchy.

Axeon Term Loan. In December 2016, Lindsay Goldberg LLC, the private investment firm that owned Axeon, informed us that they entered into an agreement to sell Axeon’s retail asphalt sales and distribution business (the Axeon Sale), and we entered into an agreement with Axeon (the Axeon Letter Agreement) to settle and terminate the Axeon Term Loan for $110.0 million upon closing of the Axeon Sale. Therefore, we reduced the carrying amount of the Axeon Term Loan to $110.0 million and reclassified the Axeon Term Loan from “Other long-term assets, net” to “Other current assets” on the consolidated balance sheet as of December 31, 2016. The Axeon Sale closed on February 22, 2017, at which time we received the $110.0 million payment in accordance with the Axeon Letter Agreement. Furthermore, the Axeon Term Loan and our obligation to provide ongoing credit support to Axeon all terminated concurrently on February 22, 2017.

7. DERIVATIVES AND RISK MANAGEMENT ACTIVITIES

We utilize various derivative instruments to manage our exposure to interest rate risk and commodity price risk. Our risk management policies and procedures are designed to monitor interest rates, futures and swap positions and over-the-counter positions, as well as physical commodity volumes, grades, locations and delivery schedules, to help ensure that our hedging activities address our market risks.

Interest Rate Risk

We are a party to certain interest rate swap agreements to manage our exposure to changes in interest rates, which include forward-starting interest rate swap agreements related to forecasted debt issuances in 2018 and 2020. We entered into these swaps in order to hedge the risk of changes in the interest payments attributable to changes in the benchmark interest rate during the period from the effective date of the swap to the issuance of the forecasted debt. Under the terms of the swaps, we pay a fixed rate and receive a rate based on the three-month USD LIBOR. These swaps qualify as cash flow hedges, and we designate them as such. We record the effective portion of mark-to-market adjustments as a component of “Accumulated other comprehensive income (loss)” (AOCI), and the amount in AOCI will be recognized in “Interest expense, net” as the forecasted interest payments occur or if the interest payments are probable not to occur. As of June 30, 2017 and December 31, 2016, the aggregate notional amount of forward-starting interest rate swaps totaled $600.0 million.

Commodity Price Risk

We are exposed to market risks related to the volatility of crude oil and refined product prices. In order to reduce the risk of commodity price fluctuations with respect to our crude oil and refined product inventories and related firm commitments to purchase and/or sell such inventories, we utilize commodity futures and swap contracts, which qualify, and we designate, as fair value hedges. Derivatives that are intended to hedge our commodity price risk, but fail to qualify as fair value or cash flow hedges, are considered economic hedges, and we record associated gains and losses in net income. Our risk management committee oversees our trading controls and procedures and certain aspects of commodity and trading risk management. Our risk management committee also reviews all new commodity and trading risk management strategies in accordance with our risk management policy, as approved by our board of directors.

The volume of commodity contracts is based on open derivative positions and represents the combined volume of our long and short open positions on an absolute basis, which totaled 2.3 million barrels and 4.7 million barrels as of June 30, 2017 and December 31, 2016, respectively. We had $0.3 million and $1.8 million of margin deposits as of June 30, 2017 and December 31, 2016, respectively.

13

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

The fair values of our derivative instruments included in our consolidated balance sheets were as follows:

		Asset Derivatives				Liability Derivatives
	Balance Sheet Location	June 30, 2017		December 31, 2016		June 30, 2017			December 31, 2016
		(Thousands of Dollars)
Derivatives Designated as Hedging Instruments:
Interest rate swaps	Other long-term assets, net	$	—	$	1,314	$	—		$	—
Commodity contracts	Accrued liabilities	162		144		(188		)	(3,566		)
Interest rate swaps	Accrued liabilities	—		—		(6,392		)	—
Interest rate swaps	Other long-term liabilities	—		—		(2,867		)	(2,632		)
Total		162		1,458		(9,447		)	(6,198		)
Derivatives Not Designated as Hedging Instruments:
Commodity contracts	Other current assets	—		265		—			(110		)
Commodity contracts	Accrued liabilities	1,387		9,128		(1,812		)	(10,758		)
Total		1,387		9,393		(1,812		)	(10,868		)
Total Derivatives		$	1,549	$	10,851	$	(11,259	)	$	(17,066	)

Certain of our derivative instruments are eligible for offset in the consolidated balance sheets and subject to master netting arrangements. Under our master netting arrangements, there is a legally enforceable right to offset amounts, and we intend to settle such amounts on a net basis. The following are the net amounts presented on the consolidated balance sheets:

Commodity Contracts	June 30, 2017			December 31, 2016
	(Thousands of Dollars)
Net amounts of assets presented in the consolidated balance sheets	$	—		$	155
Net amounts of liabilities presented in the consolidated balance sheets	$	(451	)	$	(5,052	)

We recognize the impact of our commodity contracts on earnings in “Cost of product sales” on the condensed consolidated statements of comprehensive income, and that impact was as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars)
Derivatives Designated as Fair Value Hedging Instruments:
Gain (loss) recognized in income on derivative	$	364		$	(5,792	)	$	2,461		$	(6,804	)
(Loss) gain recognized in income on hedged item	(313		)	6,938			(2,147		)	9,804
Gain recognized in income for ineffective portion	51			1,146			314			3,000
Derivatives Not Designated as Hedging Instruments:
Gain (loss) recognized in income on derivative	$	52		$	(724	)	$	(86	)	$	(4	)

14

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Our interest rate swaps had the following impact on earnings:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars)
Derivatives Designated as Cash Flow Hedging Instruments:
Loss recognized in other comprehensive income on derivative (effective portion)	$	(7,980	)	$	(20,200	)	$	(7,941	)	$	(50,178	)
Loss reclassified from AOCI into interest expense, net (effective portion)	$	(1,729	)	$	(2,158	)	$	(3,528	)	$	(4,380	)

As of June 30, 2017, we expect to reclassify a loss of $5.8 million to “Interest expense, net” within the next twelve months associated with unwound forward-starting interest rate swaps.

8. RELATED PARTY TRANSACTIONS

Employee Transfer from NuStar GP, LLC. On March 1, 2016, NuStar GP, LLC, the general partner of our general partner and a wholly owned subsidiary of NuStar GP Holdings, transferred and assigned to NuStar Services Company LLC (NuStar Services Co), a wholly owned subsidiary of NuStar Energy, all of NuStar GP, LLC’s employees and related benefit plans, programs, contracts and policies (the Employee Transfer). As a result of the Employee Transfer, we pay employee costs directly and sponsor the long-term incentive plan and other employee benefit plans. Please refer to Note 9 for a discussion of our employee benefit plans.

GP Services Agreement. Prior to the Employee Transfer, our operations were managed by NuStar GP, LLC under a services agreement effective January 1, 2008, pursuant to which employees of NuStar GP, LLC performed services for our U.S. operations. Employees of NuStar GP, LLC provided services to us and NuStar GP Holdings; therefore, we reimbursed NuStar GP, LLC for all employee costs incurred prior to the Employee Transfer, other than the expenses allocated to NuStar GP Holdings. For the six months ended June 30, 2016, we reimbursed NuStar GP, LLC $21.7 million and $10.5 million for operating expenses and general and administrative expenses, respectively.

In conjunction with the Employee Transfer, we entered into an Amended and Restated Services Agreement with NuStar GP, LLC, effective March 1, 2016 (the Amended GP Services Agreement). The Amended GP Services Agreement provides that we will furnish administrative services necessary to conduct the business of NuStar GP Holdings. NuStar GP Holdings will compensate us for these services through an annual fee of $1.0 million, subject to adjustment based on the annual merit increase percentage applicable to our employees for the most recently completed fiscal year and for changes in level of service. The Amended GP Services Agreement will terminate on March 1, 2020 and will automatically renew for successive two-year terms, unless terminated by either party.

9. EMPLOYEE BENEFIT PLANS

Effective March 1, 2016, in connection with the Employee Transfer, we assumed sponsorship and responsibility for the defined benefit plans and defined contribution plans described below. Prior to the Employee Transfer, NuStar GP, LLC sponsored and maintained these employee benefit plans and we reimbursed all costs incurred by NuStar GP, LLC related to these employee benefit plans at cost.

The NuStar Pension Plan (the Pension Plan) is a qualified non-contributory defined benefit pension plan that provides eligible U.S. employees with retirement income as calculated under a cash balance formula. The NuStar Excess Pension Plan (the Excess Pension Plan) is a nonqualified deferred compensation plan that provides benefits to a select group of management or other highly compensated employees. The Pension Plan and Excess Pension Plan are collectively referred to as the Pension Plans.

We also sponsor a contributory medical benefits plan for U.S. employees that retired prior to April 1, 2014. For employees that retire on or after April 1, 2014, we provide partial reimbursement for eligible third-party health care premiums.

15

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

The following table summarizes the components of net periodic benefit costs for the Pension Plans and other postretirement benefits on a combined basis for periods prior to the Employee Transfer and after the Employee Transfer:

	Pension Plans						Other Postretirement Benefits
	2017			2016			2017			2016
	(Thousands of Dollars)
For the three months ended June 30:
Service cost	$	2,239		$	1,926		$	113		$	105
Interest cost	1,127			1,006			108			100
Expected return on assets	(1,602		)	(1,351		)	—			—
Amortization of prior service credit	(516		)	(516		)	(286		)	(286		)
Amortization of net loss	371			273			48			45
Net periodic benefit cost (income)	$	1,619		$	1,338		$	(17	)	$	(36	)
For the six months ended June 30:
Service cost	$	4,478		$	3,852		$	226		$	210
Interest cost	2,254			2,012			216			200
Expected return on assets	(3,205		)	(2,703		)	—			—
Amortization of prior service credit	(1,031		)	(1,033		)	(572		)	(572		)
Amortization of net loss	742			546			96			90
Net periodic benefit cost (income)	$	3,238		$	2,674		$	(34	)	$	(72	)

10. PARTNERS’ EQUITY

Amendment of Partnership Agreement

Our general partner amended and restated our partnership agreement in connection with the issuance of the Series B Preferred Units as described below and the Navigator Acquisition to waive up to an aggregate $22.0 million of the quarterly incentive distributions to our general partner for any NS common units issued from the date of the Acquisition Agreement (other than those attributable to NS common units issued under any equity compensation plan) for ten consecutive quarters, starting with the distributions for the second quarter of 2017.

Issuance of Common Units

On April 18, 2017, we issued 14,375,000 common units representing limited partner interests at a price of $46.35 per unit. We used the net proceeds from this offering of $657.5 million, including a contribution of $13.6 million from our general partner to maintain its 2% general partner interest, to fund a portion of the purchase price for the Navigator Acquisition.

Issuance of Series B Preferred Units

OnApril 28, 2017, we issued 15,400,000 of our Series B Preferred Units representing limited partner interests at a price of $25.00 per unit. We used the net proceeds of $371.8 million from the issuance of the Series B Preferred Units to fund a portion of the purchase price for the Navigator Acquisition and to pay related fees and expenses.

Distributions on the Series B Preferred Units are payable out of any legally available funds, accrue and are cumulative from the date of original issuance of the Series B Preferred Units and are payable on the 15^th day of each of March, June, September and December of each year (beginning on September 15, 2017) to holders of record on the first day of each payment month. The initial distribution rate on the Series B Preferred Units to, but not including, June 15, 2022 is 7.625% per annum of the $25.00 liquidation preference per unit (equal to $1.90625 per unit per annum). On and after June 15, 2022, distributions on the Series B Preferred Units accumulate at a percentage of the $25.00 liquidation preference equal to an annual floating rate of the three-month LIBOR plus a spread of 5.643%. The Series B Preferred Units rank equal to our Series A Preferred Units and senior to our common units with respect to distribution rights and rights upon liquidation.

At any time on or after June 15, 2022, we may redeem our Series B Preferred Units, in whole or in part, at a redemption price of $25.00 per unit plus an amount equal to all accumulated and unpaid distributions to, but not including, the date of redemption, whether or not declared. We may also redeem the Series B Preferred Units upon the occurrence of certain rating

16

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

events or a change of control as defined in our partnership agreement. In the case of the latter instance, if we choose not to redeem the Series B Preferred Units, the preferred unitholders may have the ability to convert the Series B Preferred Units to common units at the then applicable conversion rate. Holders of the Series B Preferred Units have no voting rights except for certain exceptions set forth in our partnership agreement.

Partners’ Equity Activity

The following table summarizes changes to our partners’ equity (in thousands of dollars):

Balance as of January 1, 2017	$	1,611,617
Net income	84,190
Unit-based compensation expense	2,564
Other comprehensive income	4,894
Distributions to partners	(230,902		)
Issuance of preferred and common units, including contribution from general partner	1,029,257
Other	(571		)
Balance as of June 30, 2017	$	2,501,049

Accumulated Other Comprehensive Income (Loss)

The balance of and changes in the components included in AOCI were as follows:

	Foreign Currency Translation			Cash Flow Hedges			Pension and Other Postretirement Benefits			Total
	(Thousands of Dollars)
Balance as of January 1, 2017	$	(69,069	)	$	(22,258	)	$	(2,850	)	$	(94,177	)
Other comprehensive income (loss):
Other comprehensive income (loss) before    reclassification adjustments	10,072			(7,941		)	—			2,131
Net gain on pension costs reclassified into operating    expense	—			—			(572		)	(572		)
Net gain on pension costs reclassified into general and    administrative expense	—			—			(193		)	(193		)
Net loss on cash flow hedges reclassified into interest    expense, net	—			3,528			—			3,528
Other comprehensive income (loss)	10,072			(4,413		)	(765		)	4,894
Balance as of June 30, 2017	$	(58,997	)	$	(26,671	)	$	(3,615	)	$	(89,283	)

17

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Allocations of Net Income

Our partnership agreement sets forth the calculation to be used to determine the amount and priority of cash distributions that the unitholders and general partner will receive. The partnership agreement also contains provisions for the allocation of net income to the unitholders and the general partner. Our net income for each quarterly reporting period is first allocated to the preferred limited partner unitholders in an amount equal to the earned distributions for the respective reporting period and then to the general partner in an amount equal to the general partner’s incentive distribution calculated based upon the declared distribution for the respective reporting period. We allocate the remaining net income or loss among the common unitholders (98%) and general partner (2%), as set forth in our partnership agreement.

The following table details the calculation of net income applicable to the general partner:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars, Except Percentage Data)
Net income attributable to NuStar Energy L.P.	$	26,250		$	52,517		$	84,190		$	109,918
Less preferred limited partner interest	9,950			—			14,763			—
Less general partner incentive distribution	10,912			10,805			23,824			21,610
Net income after general partner incentive distribution and preferred limited partner interest	5,388			41,712			45,603			88,308
General partner interest allocation	2		%	2		%	2		%	2		%
General partner interest allocation of net income	108			834			912			1,766
General partner incentive distribution	10,912			10,805			23,824			21,610
Net income applicable to general partner	$	11,020		$	11,639		$	24,736		$	23,376

18

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Cash Distributions

General and Common Limited Partners. The following table reflects the allocation of total cash distributions to the general partner and common limited partners applicable to the period in which the distributions were earned:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
	(Thousands of Dollars, Except Per Unit Data)
General partner interest	$	2,302	$	1,961	$	4,645	$	3,922
General partner incentive distribution	10,912		10,805		23,824		21,610
Total general partner distribution	13,214		12,766		28,469		25,532
Common limited partners’ distribution	101,869		85,285		203,782		170,570
Total cash distributions	$	115,083	$	98,051	$	232,251	$	196,102
Cash distributions per unit applicable to common limited partners	$	1.095	$	1.095	$	2.190	$	2.190

The following table summarizes information related to our quarterly cash distributions to our general partner and common limited partners:

Quarter Ended	Cash Distributions Per Unit		Total Cash Distributions		Record Date	Payment Date
			(Thousands of Dollars)
June 30, 2017 (a)	$	1.095	$	115,083	August 7, 2017	August 11, 2017
March 31, 2017	$	1.095	$	117,168	May 8, 2017	May 12, 2017
December 31, 2016	$	1.095	$	98,971	February 8, 2017	February 13, 2017

(a) The distribution was announced on July 28, 2017.

Preferred Units. The following table summarizes information related to our quarterly cash distributions on our Series A and Series B Preferred Units:

Period	Cash Distributions Per Unit		Total Cash Distributions		Record Date	Payment Date
			(Thousands of Dollars)
Series A Preferred Units:
June 15, 2017 - September 14, 2017 (a)	$	0.53125	$	4,813	September 1, 2017	September 15, 2017
March 15, 2017 - June 14, 2017	$	0.53125	$	4,813	June 1, 2017	June 15, 2017
November 25, 2016 - March 14, 2017	$	0.64930556	$	5,883	March 1, 2017	March 15, 2017
Series B Preferred Units:
April 28, 2017 - September 14, 2017 (a)	$	0.725434028	$	11,172	September 1, 2017	September 15, 2017

(a) The distribution was announced on July 28, 2017.

19

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

11. NET INCOME PER COMMON UNIT

Basic and diluted net income per common unit is determined pursuant to the two-class method. Under this method, all earnings are allocated to our common limited partners and participating securities based on their respective rights to receive distributions earned during the period. Participating securities include our general partner interest and restricted units awarded under our long-term incentive plan.

We compute basic net income per common unit by dividing net income attributable to common units by the weighted-average number of common units outstanding during the period. We compute diluted net income per common unit by dividing net income attributable to our common limited partners by the sum of (i) the weighted-average number of common units outstanding during the period and (ii) the effect of dilutive potential common units outstanding during the period. Dilutive potential common units include contingently issuable performance units awarded under our long-term incentive plan.

The following table details the calculation of net income per common unit:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars, Except Unit and Per Unit Data)
Net income attributable to NuStar Energy L.P.	$	26,250		$	52,517		$	84,190		$	109,918
Less: Distributions to general partner (including incentive     distribution rights)	13,214			12,766			28,469			25,532
Less: Distributions to common limited partners	101,869			85,285			203,782			170,570
Less: Distributions to preferred limited partners	9,950			—			14,763			—
Less: Distribution equivalent rights to restricted units	712			657			1,427			1,319
Distributions in excess of earnings	$	(99,495	)	$	(46,191	)	$	(164,251	)	$	(87,503	)
Net income attributable to common units:
Distributions to common limited partners	$	101,869		$	85,285		$	203,782		$	170,570
Allocation of distributions in excess of earnings	(97,505		)	(45,267		)	(160,966		)	(85,752		)
Total	$	4,364		$	40,018		$	42,816		$	84,818
Basic weighted-average common units outstanding	90,345,469			77,886,219			84,526,506			77,886,148
Diluted common units outstanding:
Basic weighted-average common units outstanding	90,345,469			77,886,219			84,526,506			77,886,148
Effect of dilutive potential common units	—			53,060			—			57,554
Diluted weighted-average common units outstanding	90,345,469			77,939,279			84,526,506			77,943,702
Basic and diluted net income per common unit	$	0.05		$	0.52		$	0.51		$	1.09

20

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

12. STATEMENTS OF CASH FLOWS

Changes in current assets and current liabilities were as follows:

	Six Months Ended June 30,
	2017			2016
	(Thousands of Dollars)
Decrease (increase) in current assets:
Accounts receivable	$	48,875		$	(572	)
Receivable from related party	231			—
Inventories	13,005			99
Other current assets	(2,388		)	5,064
Increase (decrease) in current liabilities:
Accounts payable	(57,822		)	(4,717		)
Payable to related party, net	—			697
Accrued interest payable	6,234			(393		)
Accrued liabilities	(14,703		)	(12,321		)
Taxes other than income tax	(3,094		)	(348		)
Income tax payable	(5,682		)	(2,783		)
Changes in current assets and current liabilities	$	(15,344	)	$	(15,274	)

The above changes in current assets and current liabilities differ from changes between amounts reflected in the applicable consolidated balance sheets due to:

• current assets and current liabilities acquired during the period;

• the change in the amount accrued for capital expenditures; and

• the effect of foreign currency translation.

Cash flows related to interest and income taxes were as follows:

	Six Months Ended June 30,
	2017		2016
	(Thousands of Dollars)
Cash paid for interest, net of amount capitalized	$	70,119	$	70,280
Cash paid for income taxes, net of tax refunds received	$	9,556	$	8,826

13. SEGMENT INFORMATION

Our reportable business segments consist of pipeline, storage and fuels marketing. Our segments represent strategic business units that offer different services and products. We evaluate the performance of each segment based on its respective operating income, before general and administrative expenses and certain non-segmental depreciation and amortization expense. General and administrative expenses are not allocated to the operating segments since those expenses relate primarily to the overall management at the entity level. Our principal operations include the transportation of petroleum products and anhydrous ammonia, the terminalling and storage of petroleum products and the marketing of petroleum products. Intersegment revenues result from storage agreements with wholly owned subsidiaries of NuStar Energy at rates consistent with the rates charged to third parties for storage.

21

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Results of operations for the reportable segments were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars)
Revenues:
Pipeline	$	126,740		$	121,575		$	247,980		$	240,448
Storage:
Third parties	154,830			146,367			298,318			292,751
Intersegment	3,729			5,507			7,672			11,522
Total storage	158,559			151,874			305,990			304,273
Fuels marketing	153,918			169,862			376,620			310,308
Consolidation and intersegment eliminations	(3,729		)	(5,507		)	(7,672		)	(11,522		)
Total revenues	$	435,488		$	437,804		$	922,918		$	843,507
Operating income:
Pipeline	$	52,868		$	63,552		$	117,896		$	127,817
Storage	56,049			51,063			109,808			108,076
Fuels marketing	289			1,392			5,429			619
Consolidation and intersegment eliminations	1			1			1			1
Total segment operating income	109,207			116,008			233,134			236,513
General and administrative expenses	33,604			22,657			58,199			46,442
Other depreciation and amortization expense	2,199			2,134			4,392			4,289
Total operating income	$	73,404		$	91,217		$	170,543		$	185,782

Total assets by reportable segment were as follows:

	June 30, 2017		December 31, 2016
	(Thousands of Dollars)
Pipeline	$	3,458,700	$	2,024,633
Storage	2,605,122		2,522,586
Fuels marketing	103,623		168,347
Total segment assets	6,167,445		4,715,566
Other partnership assets	191,879		314,979
Total consolidated assets	$	6,359,324	$	5,030,545

22

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

14. CONDENSED CONSOLIDATING FINANCIAL STATEMENTS

NuStar Energy has no operations and its assets consist mainly of its 100% indirectly owned subsidiaries, NuStar Logistics and NuPOP. The senior and subordinated notes issued by NuStar Logistics are fully and unconditionally guaranteed by NuStar Energy and NuPOP. As a result, the following condensed consolidating financial statements are presented as an alternative to providing separate financial statements for NuStar Logistics and NuPOP.

Condensed Consolidating Balance Sheets

June 30, 2017

(Thousands of Dollars)

	NuStar Energy		NuStar Logistics		NuPOP		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Cash and cash equivalents	$	867	$	64	$	—	$	28,260	$	—		$	29,191
Receivables, net	—		93		—		147,541		—			147,634
Inventories	—		1,977		3,254		20,541		—			25,772
Other current assets	69		12,623		5,475		10,134		(36		)	28,265
Intercompany receivable	—		3,088,723		—		—		(3,088,723		)	—
Total current assets	936		3,103,480		8,729		206,476		(3,088,759		)	230,862
Property, plant and equipment, net	—		1,911,890		578,504		1,656,939		—			4,147,333
Intangible assets, net	—		63,163		—		794,453		—			857,616
Goodwill	—		149,453		170,652		703,254		—			1,023,359
Investment in wholly owned subsidiaries	3,085,078		28,711		1,270,678		842,841		(5,227,308		)	—
Deferred income tax asset	—		—		—		1,359		—			1,359
Other long-term assets, net	378		60,588		28,039		9,790		—			98,795
Total assets	$	3,086,392	$	5,317,285	$	2,056,602	$	4,215,112	$	(8,316,067	)	$	6,359,324
Liabilities and Partners’ Equity
Accounts payable	$	6,330	$	21,064	$	5,573	$	59,701	$	—		$	92,668
Short-term debt	—		45,000		—		—		—			45,000
Current portion of long-term debt	—		350,021		—		53,054		—			403,075
Accrued interest payable	—		40,206		—		26		—			40,232
Accrued liabilities	720		19,929		11,434		23,903		—			55,986
Taxes other than income tax	8		5,867		3,819		7,015		—			16,709
Income tax payable	—		—		2		881		(36		)	847
Intercompany payable	489,002		—		1,182,082		1,417,639		(3,088,723		)	—
Total current liabilities	496,060		482,087		1,202,910		1,562,219		(3,088,759		)	654,517
Long-term debt	—		3,073,864		—		—		—			3,073,864
Deferred income tax liability	—		1,862		13		20,988		—			22,863
Other long-term liabilities	—		43,538		10,973		52,520		—			107,031
Total partners’ equity	2,590,332		1,715,934		842,706		2,579,385		(5,227,308		)	2,501,049
Total liabilities and partners’ equity	$	3,086,392	$	5,317,285	$	2,056,602	$	4,215,112	$	(8,316,067	)	$	6,359,324

23

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Balance Sheets

December 31, 2016

(Thousands of Dollars)

	NuStar Energy		NuStar Logistics		NuPOP		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Cash and cash equivalents	$	870	$	5	$	—	$	35,067	$	—		$	35,942
Receivables, net	—		3,040		—		167,570		—			170,610
Inventories	—		2,216		2,005		33,724		—			37,945
Other current assets	61		120,350		1,829		10,446		—			132,686
Intercompany receivable	—		1,308,415		—		57,785		(1,366,200		)	—
Total current assets	931		1,434,026		3,834		304,592		(1,366,200		)	377,183
Property, plant and equipment, net	—		1,935,172		589,139		1,197,972		—			3,722,283
Intangible assets, net	—		71,033		—		56,050		—			127,083
Goodwill	—		149,453		170,652		376,532		—			696,637
Investment in wholly owned subsidiaries	1,964,736		34,778		1,221,717		874,649		(4,095,880		)	—
Deferred income tax asset	—		—		—		2,051		—			2,051
Other long-term assets, net	1,255		63,586		28,587		11,880		—			105,308
Total assets	$	1,966,922	$	3,688,048	$	2,013,929	$	2,823,726	$	(5,462,080	)	$	5,030,545
Liabilities and Partners’ Equity
Accounts payable	$	2,436	$	24,272	$	7,124	$	84,854	$	—		$	118,686
Short-term debt	—		54,000		—		—		—			54,000
Accrued interest payable	—		34,008		—		22		—			34,030
Accrued liabilities	1,070		7,118		10,766		41,531		—			60,485
Taxes other than income tax	125		6,854		3,253		5,453		—			15,685
Income tax payable	—		1,326		5		5,179		—			6,510
Intercompany payable	257,497		—		1,108,703		—		(1,366,200		)	—
Total current liabilities	261,128		127,578		1,129,851		137,039		(1,366,200		)	289,396
Long-term debt	—		2,956,338		—		58,026		—			3,014,364
Deferred income tax liability	—		1,862		13		20,329		—			22,204
Other long-term liabilities	—		34,358		9,436		49,170		—			92,964
Total partners’ equity	1,705,794		567,912		874,629		2,559,162		(4,095,880		)	1,611,617
Total liabilities and partners’ equity	$	1,966,922	$	3,688,048	$	2,013,929	$	2,823,726	$	(5,462,080	)	$	5,030,545

24

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Three Months Ended June 30, 2017

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Revenues	$	—		$	128,895		$	50,577		$	256,363	$	(347	)	$	435,488
Costs and expenses	486			83,096			37,781			241,068		(347		)	362,084
Operating (loss) income	(486		)	45,799			12,796			15,295		—			73,404
Equity in earnings (loss) of subsidiaries	26,732			(7,177		)	22,746			34,141		(76,442		)	—
Interest income (expense), net	4			(46,390		)	(1,401		)	2,175		—			(45,612		)
Other income, net	—			62			3			23		—			88
Income (loss) before income tax (benefit) expense	26,250			(7,706		)	34,144			51,634		(76,442		)	27,880
Income tax (benefit) expense	—			(365		)	1			1,994		—			1,630
Net income (loss)	$	26,250		$	(7,341	)	$	34,143		$	49,640	$	(76,442	)	$	26,250
Comprehensive income (loss)	$	26,250		$	(13,592	)	$	34,143		$	57,022	$	(76,442	)	$	27,381

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Three Months Ended June 30, 2016

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP		Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	125,562		$	58,129	$	254,489		$	(376	)	$	437,804
Costs and expenses	434			73,505			35,986		237,038			(376		)	346,587
Operating (loss) income	(434		)	52,057			22,143		17,451			—			91,217
Equity in earnings (loss) of subsidiaries	52,929			(2,203		)	20,171		44,346			(115,243		)	—
Interest (expense) income, net	—			(41,155		)	2,026		549			4,351			(34,229		)
Other income (expense), net	22			21			7		(251		)	—			(201		)
Income before income tax expense	52,517			8,720			44,347		62,095			(110,892		)	56,787
Income tax expense	—			347			3		3,920			—			4,270
Net income	$	52,517		$	8,373		$	44,344	$	58,175		$	(110,892	)	$	52,517
Comprehensive income (loss)	$	52,517		$	(9,669	)	$	44,344	$	52,878		$	(110,892	)	$	29,178

25

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Six Months Ended June 30, 2017

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Revenues	$	—		$	252,524		$	102,818		$	568,210	$	(634	)	$	922,918
Costs and expenses	995			159,418			67,587			525,009		(634		)	752,375
Operating (loss) income	(995		)	93,106			35,231			43,201		—			170,543
Equity in earnings (loss) of subsidiaries	85,177			(6,067		)	48,961			81,494		(209,565		)	—
Interest income (expense), net	8			(83,304		)	(2,705		)	3,975		—			(82,026		)
Other income, net	—			83			9			136		—			228
Income before income tax (benefit) expense	84,190			3,818			81,496			128,806		(209,565		)	88,745
Income tax (benefit) expense	—			(34		)	2			4,587		—			4,555
Net income	$	84,190		$	3,852		$	81,494		$	124,219	$	(209,565	)	$	84,190
Comprehensive income (loss)	$	84,190		$	(561	)	$	81,494		$	133,526	$	(209,565	)	$	89,084

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Six Months Ended June 30, 2016

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	252,140		$	106,114		$	485,965		$	(712	)	$	843,507
Costs and expenses	952			142,396			67,001			448,088			(712		)	657,725
Operating (loss) income	(952		)	109,744			39,113			37,877			—			185,782
Equity in earnings (loss) of       subsidiaries	110,851			(5,318		)	45,454			88,089			(239,076		)	—
Interest (expense) income, net	—			(80,787		)	3,534			8,901			—			(68,352		)
Other income (expense), net	22			22			(10		)	(406		)	—			(372		)
Income before income tax expense	109,921			23,661			88,091			134,461			(239,076		)	117,058
Income tax expense	3			693			5			6,439			—			7,140
Net income	$	109,918		$	22,968		$	88,086		$	128,022		$	(239,076	)	$	109,918
Comprehensive income (loss)	$	109,918		$	(22,830	)	$	88,086		$	135,703		$	(239,076	)	$	71,801

26

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Statements of Cash Flows

For the Six Months Ended June 30, 2017

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by operating      activities	$	225,566		$	85,203		$	45,790		$	192,692		$	(340,263	)	$	208,988
Cash flows from investing activities:
Capital expenditures	—			(19,639		)	(5,588		)	(83,622		)	—			(108,849		)
Change in accounts payable     related to capital expenditures	—			(2,823		)	(35		)	9,709			—			6,851
Acquisitions	—			—			—			(1,476,719		)	—			(1,476,719		)
Proceeds from sale or disposition of assets	—			1,898			12			56			—			1,966
Investment in subsidiaries	(1,262,000		)	—			—			(126		)	1,262,126			—
Proceeds from Axeon term loan	—			110,000			—			—			—			110,000
Net cash (used in) provided by investing activities	(1,262,000		)	89,436			(5,611		)	(1,550,702		)	1,262,126			(1,466,751		)
Cash flows from financing activities:
Debt borrowings	—			1,536,761			—			65,400			—			1,602,161
Debt repayments	—			(1,625,739		)	—			(70,500		)	—			(1,696,239		)
Note offering, net of issuance costs	—			543,313			—			—			—			543,313
Issuance of preferred units, net of issuance costs	371,802			—			—			—			—			371,802
Issuance of common units, net of issuance costs	643,858			—			—			—			—			643,858
General partner contribution	13,597			—			—			—			—			13,597
Distributions to preferred unitholders	(10,696		)	(5,348		)	(5,348		)	(5,348		)	16,044			(10,696		)
Distributions to common unitholders and general partner	(216,139		)	(108,070		)	(108,069		)	(108,080		)	324,219			(216,139		)
Contributions from affiliates	—			1,262,000			—			126			(1,262,126		)	—
Net intercompany activity	236,622			(1,778,816		)	73,237			1,468,957			—			—
Other, net	(2,613		)	1,319			1			(1		)	—			(1,294		)
Net cash provided by (used in) financing activities	1,036,431			(174,580		)	(40,179		)	1,350,554			(921,863		)	1,250,363
Effect of foreign exchange rate changes on cash	—			—			—			649			—			649
Net (decrease) increase in cash and cash equivalents	(3		)	59			—			(6,807		)	—			(6,751		)
Cash and cash equivalents as of the beginning of the period	870			5			—			35,067			—			35,942
Cash and cash equivalents as of the end of the period	$	867		$	64		$	—		$	28,260		$	—		$	29,191

27

NUSTAR ENERGY L.P. AND SUBSIDIARIES

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – (Continued)

Condensed Consolidating Statements of Cash Flows

For the Six Months Ended June 30, 2016

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by operating activities	$	194,793		$	58,160		$	79,728		$	201,026		$	(318,674	)	$	215,033
Cash flows from investing activities:
Capital expenditures	—			(47,672		)	(19,474		)	(28,215		)	—			(95,361		)
Change in accounts payable     related to capital expenditures	—			(12,230		)	3,357			(3,801		)	—			(12,674		)
Net cash used in investing activities	—			(59,902		)	(16,117		)	(32,016		)	—			(108,035		)
Cash flows from financing activities:
Debt borrowings	—			610,504			—			17,400			—			627,904
Debt repayments	—			(532,992		)	—			(14,200		)	—			(547,192		)
Distributions to common unitholders and general partner	(196,102		)	(98,051		)	(98,051		)	(98,062		)	294,164			(196,102		)
Distributions to affiliates	—			—			—			(24,510		)	24,510			—
Net intercompany activity	1,755			24,561			34,440			(60,756		)	—			—
Other, net	(668		)	(2,281		)	—			(8,891		)	—			(11,840		)
Net cash (used in) provided by      financing activities	(195,015		)	1,741			(63,611		)	(189,019		)	318,674			(127,230		)
Effect of foreign exchange rate changes on cash	—			—			—			4,389			—			4,389
Net decrease in cash and cash equivalents	(222		)	(1		)	—			(15,620		)	—			(15,843		)
Cash and cash equivalents as of the beginning of the period	885			4			—			117,973			—			118,862
Cash and cash equivalents as of the end of the period	$	663		$	3		$	—		$	102,353		$	—		$	103,019

28

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

FORWARD-LOOKING STATEMENTS

This Form 10-Q contains certain estimates, predictions, projections, assumptions and other forward-looking statements that involve various risks and uncertainties. While these forward-looking statements, and any assumptions upon which they are based, are made in good faith and reflect our current judgment regarding the direction of our business, actual results will almost always vary, sometimes materially, from any estimates, predictions, projections, assumptions or other future performance suggested in this report. These forward-looking statements can generally be identified by the words “anticipates,” “believes,” “expects,” “plans,” “intends,” “estimates,” “forecasts,” “budgets,” “projects,” “will,” “could,” “should,” “may” and similar expressions. These statements reflect our current views with regard to future events and are subject to various risks, uncertainties and assumptions. Please read our Annual Report on Form 10-K for the year ended December 31, 2016, Part I, Item 1A “Risk Factors,” as well as our subsequent current and quarterly reports, for a discussion of certain of those risks, uncertainties and assumptions.

If one or more of these risks or uncertainties materialize, or if the underlying assumptions prove incorrect, our actual results may vary materially from those described in any forward-looking statement. Other unknown or unpredictable factors could also have material adverse effects on our future results. Readers are cautioned not to place undue reliance on this forward-looking information, which is as of the date of this Form 10-Q. We do not intend to update these statements unless we are required by the securities laws to do so, and we undertake no obligation to publicly release the result of any revisions to any such forward-looking statements that may be made to reflect events or circumstances after the date of this report or to reflect the occurrence of unanticipated events.

OVERVIEW

NuStar Energy L.P. (NYSE: NS) is engaged in the transportation of petroleum products and anhydrous ammonia, and the terminalling, storage and marketing of petroleum products. Unless otherwise indicated, the terms “NuStar Energy,” “NS,” “the Partnership,” “we,” “our” and “us” are used in this report to refer to NuStar Energy L.P., to one or more of our consolidated subsidiaries or to all of them taken as a whole. NuStar GP Holdings, LLC (NuStar GP Holdings or NSH) (NYSE: NSH) owns our general partner, Riverwalk Logistics, L.P., and owns an approximate 11% common limited partner interest in us as of June 30, 2017. Our Management’s Discussion and Analysis of Financial Condition and Results of Operations is presented in seven sections:

• Overview

• Results of Operations

• Trends and Outlook

• Liquidity and Capital Resources

• Related Party Transactions

• Critical Accounting Policies

• New Accounting Pronouncements

Recent Developments

Navigator Acquisition and Financing Transactions. On May 4, 2017, we completed the acquisition of Navigator Energy Services, LLC for approximately $1.5 billion (the Navigator Acquisition), subject to customary adjustments at and following closing. In order to fund the purchase price, we issued 14,375,000 common units for net proceeds of $657.5 million, issued $550.0 million of 5.625% senior notes for net proceeds of $543.3 million and issued 15,400,000 of our 7.625% Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units (Series B Preferred Units) for net proceeds of $371.8 million. We collectively refer to the acquired assets as our Permian Crude System. The assets acquired are included in our pipeline segment. Please refer to Notes 3, 4 and 10 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for further discussion.

Axeon Term Loan. On February 22, 2017, we settled and terminated the $190.0 million term loan to Axeon Specialty Products, LLC (the Axeon Term Loan), pursuant to which we also provided credit support, such as guarantees, letters of credit and cash collateral, as applicable, of up to $125.0 million to Axeon Specialty Products, LLC (Axeon). We received $110.0 million in settlement of the Axeon Term Loan, and our obligation to provide ongoing credit support to Axeon ceased. Please refer to Note 6 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” further discussion of the Axeon Term Loan and credit support.

29

Operations

We conduct our operations through our subsidiaries, primarily NuStar Logistics, L.P. (NuStar Logistics) and NuStar Pipeline Operating Partnership L.P. (NuPOP). Our operations consist of three reportable business segments: pipeline, storage and fuels marketing.

Pipeline. We own 3,140 miles of refined product pipelines and 1,830 miles of crude oil pipelines and gathering lines, as well as approximately 5.0 million barrels of storage capacity, which comprise our Central West System. In addition, we own 2,370 miles of refined product pipelines, consisting of the East and North Pipelines, and a 2,000-mile ammonia pipeline (the Ammonia Pipeline), which together comprise our Central East System. The East and North Pipelines have storage capacity of approximately 6.7 million barrels. We charge tariffs on a per barrel basis for transporting refined products, crude oil and other feedstocks in our refined product and crude oil pipelines and on a per ton basis for transporting anhydrous ammonia in the Ammonia Pipeline.

Storage. We own terminals and storage facilities in the United States, Canada, Mexico, the Netherlands, including St. Eustatius in the Caribbean, and the United Kingdom (UK), with approximately 84.9 million barrels of storage capacity. Revenues for the storage segment include fees for tank storage agreements, whereby a customer agrees to pay for a certain amount of storage in a tank over a period of time (storage terminal revenues), and throughput agreements, whereby a customer pays a fee per barrel for volumes moving through our terminals (throughput terminal revenues).

Fuels Marketing. Within our fuels marketing operations, we purchase refined petroleum products for resale. The results of operations for the fuels marketing segment depend largely on the margin between our cost and the sales prices of the products we market. Therefore, the results of operations for this segment are more sensitive to changes in commodity prices compared to the operations of the pipeline and storage segments. We enter into derivative contracts to attempt to mitigate the effects of commodity price fluctuations.

During the second quarter of 2017, we ceased marketing crude oil. Also, we began the process of exiting our heavy fuels trading operations, which we expect to complete in the third quarter of 2017. These decisions are in line with our goal of reducing our exposure to commodity margins, and instead focusing on our core, fee-based pipeline and storage segments. Going forward, the only operations remaining in our fuels marketing segment will be our bunkering operations at our St. Eustatius and Texas City terminals, as well as our butane blending operations on our East Pipeline.

The following factors affect the results of our operations:

• company-specific factors, such as facility integrity issues and maintenance requirements that impact the throughput rates of our assets;

• seasonal factors that affect the demand for products transported by and/or stored in our assets and the demand for products we sell;

• industry factors, such as changes in the prices of petroleum products that affect demand and operations of our competitors;

• economic factors, such as commodity price volatility that impact our fuels marketing segment and the drilling activity by our crude oil production customers; and

• factors that impact the operations served by our pipeline and storage assets, such as utilization rates and maintenance turnaround schedules of our refining company customers and drilling activity by our crude oil production customers.

Current Market Conditions

While the price of crude oil has recovered modestly since its sharp initial decline in 2015 and subsequent historic lows during 2016, energy industry experts currently expect crude oil prices to see only a modest price recovery, with some continued volatility, in the second half of 2017.

Increases or decreases in the price of crude oil affect various sectors of the energy industry, including our customers in crude oil production, refining and trading, in different ways. For example, the sustained period of low prices forced crude oil producers to reduce their capital spending and drilling activity and some producers narrowed their focus to assets in the most cost-advantaged regions. On the other hand, while some refiners have benefitted from lower crude oil prices, particularly to the extent the lower feedstock price has been coupled with higher demand for certain refined products in some regional markets, increases in refined product inventory may cause some refiners to reduce their production levels.

30

RESULTS OF OPERATIONS

Three Months Ended June 30, 2017 Compared to Three Months Ended June 30, 2016

Financial Highlights

(Unaudited, Thousands of Dollars, Except Unit and Per Unit Data)

	Three Months Ended June 30,						Change
	2017			2016
Statement of Income Data:
Revenues:
Service revenues	$	283,700		$	270,403		$	13,297
Product sales	151,788			167,401			(15,613		)
Total revenues	435,488			437,804			(2,316		)
Costs and expenses:
Cost of product sales	144,479			157,617			(13,138		)
Operating expenses	116,400			112,662			3,738
General and administrative expenses	33,604			22,657			10,947
Depreciation and amortization expense	67,601			53,651			13,950
Total costs and expenses	362,084			346,587			15,497
Operating income	73,404			91,217			(17,813		)
Interest expense, net	(45,612		)	(34,229		)	(11,383		)
Other income (expense), net	88			(201		)	289
Income before income tax expense	27,880			56,787			(28,907		)
Income tax expense	1,630			4,270			(2,640		)
Net income	$	26,250		$	52,517		$	(26,267	)
Basic and diluted net income per common unit	$	0.05		$	0.52		$	(0.47	)
Basic weighted-average common units outstanding	90,345,469			77,886,219			12,459,250

Overview

Net income decreased $26.3 million for the three months ended June 30, 2017, compared to the three months ended June 30, 2016, primarily due to increased interest expense, increased general and administrative expenses and decreased segment operating income. Within segment operating income, decreased segment operating income from our pipeline and fuels marketing segments was partially offset by an increase in segment operating income from our storage segment.

31

Segment Operating Highlights

(Thousands of Dollars, Except Barrels/Day Information)

	Three Months Ended June 30,						Change
	2017			2016
Pipeline:
Refined products pipelines throughput (barrels/day)	531,529			538,996			(7,467		)
Crude oil pipelines throughput (barrels/day)	558,182			399,372			158,810
Total throughput (barrels/day)	1,089,711			938,368			151,343
Throughput revenues	$	126,740		$	121,575		$	5,165
Operating expenses	40,197			36,159			4,038
Depreciation and amortization expense	33,675			21,864			11,811
Segment operating income	$	52,868		$	63,552		$	(10,684	)
Storage:
Throughput (barrels/day)	337,518			727,857			(390,339		)
Throughput terminal revenues	$	22,122		$	28,668		$	(6,546	)
Storage terminal revenues	136,437			123,206			13,231
Total revenues	158,559			151,874			6,685
Operating expenses	70,783			71,158			(375		)
Depreciation and amortization expense	31,727			29,653			2,074
Segment operating income	$	56,049		$	51,063		$	4,986
Fuels Marketing:
Product sales and other revenue	$	153,918		$	169,862		$	(15,944	)
Cost of product sales	147,013			160,557			(13,544		)
Gross margin	6,905			9,305			(2,400		)
Operating expenses	6,616			7,913			(1,297		)
Segment operating income	$	289		$	1,392		$	(1,103	)
Consolidation and Intersegment Eliminations:
Revenues	$	(3,729	)	$	(5,507	)	$	1,778
Cost of product sales	(2,534		)	(2,940		)	406
Operating expenses	(1,196		)	(2,568		)	1,372
Total	$	1		$	1		$	—
Consolidated Information:
Revenues	$	435,488		$	437,804		$	(2,316	)
Cost of product sales	144,479			157,617			(13,138		)
Operating expenses	116,400			112,662			3,738
Depreciation and amortization expense	65,402			51,517			13,885
Segment operating income	109,207			116,008			(6,801		)
General and administrative expenses	33,604			22,657			10,947
Other depreciation and amortization expense	2,199			2,134			65
Consolidated operating income	$	73,404		$	91,217		$	(17,813	)

32

Pipeline

Total revenues increased $5.2 million and throughputs increased 151,343 barrels per day for the three months ended June 30, 2017, compared to the three months ended June 30, 2016, primarily due to:

• an increase in revenues of $9.5 million and an increase in throughputs of 169,196 barrels per day resulting from our Permian Crude System acquired in the Navigator Acquisition;

• an increase in revenues of $3.4 million and an increase in throughputs of 12,749 barrels per day on our East Pipeline due to the completion of various storage projects along the pipeline;

• an increase in revenues of $1.7 million and an increase in throughputs of 29,610 barrels per day due to increased production at the refinery served by our McKee System pipelines; and

• an increase in revenues of $1.4 million and an increase in throughputs of 24,619 barrels per day on our Ardmore System due to increased production at the refinery served by this system, as well as increased long-haul deliveries in 2017 due to the completion of a pipeline project in the third quarter of 2016.

These increases were partially offset by a decrease in revenues of $7.6 million and a decrease in throughputs of 33,410 barrels per day due to a turnaround in the second quarter of 2017 at the refinery served by the North Pipeline. Revenues decreased $2.8 million due to a decrease in throughputs of 47,447 barrels per day on our Eagle Ford System mainly due to reduced production in this sustained low crude oil price environment.

Operating expenses increased $4.0 million for the three months ended June 30, 2017, compared to the three months ended June 30, 2016, mainly as a result of our recently acquired Permian Crude System.

Depreciation and amortization expense increased $11.8 million for the three months ended June 30, 2017, compared to the three months ended June 30, 2016, mainly due to our acquisition of the Permian Crude System and the completion of various pipeline projects.

Storage

Beginning January 1, 2017, our agreements for our refinery crude storage tanks at Corpus Christi, TX, Texas City, TX and Benicia, CA changed from throughput-based to storage-based. Excluding the effect from the change to these agreements, throughput terminal revenues would have increased $2.7 million and throughputs would have increased 24,783 barrels per day for the three months ended June 30, 2017, compared to the three months ended June 30, 2016. Throughput terminal revenues increased $4.0 million due to an increase in throughputs of 34,659 barrels per day at our Corpus Christi North Beach terminal, mainly resulting from our acquisition of assets from Martin Operating Partnership L.P. in December 2016 (the Martin Terminal Acquisition). The benefit of the Martin Terminal Acquisition was partially offset by decreased revenues of $1.8 million and decreased throughputs of 35,103 barrels per day at our Paulsboro terminal as a customer diverted barrels to other terminals.

Excluding the effect of the change to the refinery storage tank agreements described above, storage terminal revenues would have increased $3.4 million for the three months ended June 30, 2017, compared to the three months ended June 30, 2016, primarily due to:

• an increase in revenues of $2.8 million at our North East Terminals, mainly resulting from increased throughput and related handling fees, new customer contracts and higher reimbursable revenues;

• an increase in revenues of $2.3 million at our St. Eustatius terminal, mainly due to new customer contracts and rate escalations, partially offset by decreased lower throughput and related handling fees; and

• an increase in revenues of $2.2 million at our West Coast Terminals primarily due an increase in customer base and rate escalations.

These increases were partially offset by a decrease in revenues of $3.2 million at our Texas City terminal primarily due to a decrease in customer base and lower throughput and related handling fees.

Operating expenses remained flat for the three months ended June 30, 2017, compared to the three months ended June 30, 2016, mainly as a result of a decrease in maintenance expenses of $2.7 million, primarily at terminals in our northeast region, mostly offset by an increase in operating expenses of $2.6 million resulting from the Martin Terminal Acquisition.

Depreciation and amortization expense increased $2.1 million for the three months ended June 30, 2017, compared to the three months ended June 30, 2016, as a result of the Martin Terminal Acquisition and the completion of various storage projects.

Fuels Marketing

Segment operating income decreased $1.1 million for the three months ended June 30, 2017, compared to the three months ended June 30, 2016, primarily due to lower gross margins from our bunker fuel operations, mainly at our St. Eustatius terminal.

33

Consolidation and Intersegment Eliminations

Revenue and operating expense eliminations primarily relate to storage fees charged to the fuels marketing segment by the storage segment. Cost of product sales eliminations represent expenses charged to the fuels marketing segment for costs associated with inventory that are expensed once the inventory is sold.

General

General and administrative expenses increased $10.9 million for the three months ended June 30, 2017, compared to the three months ended June 30, 2016, primarily due to transaction costs related to the Navigator Acquisition.

Interest expense, net increased $11.4 million for the three months ended June 30, 2017, compared to the three months ended June 30, 2016, mainly due to the issuance of $550.0 million of 5.625% senior notes in April 2017 and as a result of fees for a bridge loan commitment to potentially assist with the financing of the Navigator Acquisition. We did not enter into or borrow under the bridge loan. Interest expense also increased as a result of lower interest income due to the termination of the Axeon Term Loan in February 2017. Please refer to Note 6 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a discussion of the Axeon Term Loan and related credit support.

Income tax expense decreased $2.6 million for the three months ended June 30, 2017, compared to the three months ended June 30, 2016, primarily due to a reduction in withholding taxes related to certain of our foreign subsidiaries.

Six Months Ended June 30, 2017 Compared to Six Months Ended June 30, 2016

Financial Highlights

(Unaudited, Thousands of Dollars, Except Unit and Per Unit Data)

	Six Months Ended June 30,						Change
	2017			2016
Statement of Income Data:
Revenues:
Service revenues	$	550,162		$	536,969		$	13,193
Product sales	372,756			306,538			66,218
Total revenues	922,918			843,507			79,411
Costs and expenses:
Cost of product sales	352,285			286,607			65,678
Operating expenses	217,426			217,883			(457		)
General and administrative expenses	58,199			46,442			11,757
Depreciation and amortization expense	124,465			106,793			17,672
Total costs and expenses	752,375			657,725			94,650
Operating income	170,543			185,782			(15,239		)
Interest expense, net	(82,026		)	(68,352		)	(13,674		)
Other income (expense), net	228			(372		)	600
Income before income tax expense	88,745			117,058			(28,313		)
Income tax expense	4,555			7,140			(2,585		)
Net income	$	84,190		$	109,918		$	(25,728	)
Basic and diluted net income per common unit	$	0.51		$	1.09		$	(0.58	)
Basic weighted-average common units outstanding	84,526,506			77,886,148			6,640,358

34

Overview

Net income decreased $25.7 million for the six months ended June 30, 2017, compared to the six months ended June 30, 2016, primarily due to increased interest expense, increased general and administrative expenses and decreased segment operating income. Segment operating income decreased due to a decline in segment operating income generated by the pipeline segment that was only partially offset by increases in segment operating income generated by our fuels marketing and storage segments.

Segment Operating Highlights

(Thousands of Dollars, Except Barrels/Day Information)

	Six Months Ended June 30,						Change
	2017			2016
Pipeline:
Refined products pipelines throughput (barrels/day)	522,820			530,134			(7,314		)
Crude oil pipelines throughput (barrels/day)	483,909			405,241			78,668
Total throughput (barrels/day)	1,006,729			935,375			71,354
Throughput revenues	$	247,980		$	240,448		$	7,532
Operating expenses	73,271			69,163			4,108
Depreciation and amortization expense	56,813			43,468			13,345
Segment operating income	$	117,896		$	127,817		$	(9,921	)
Storage:
Throughput (barrels/day)	326,327			778,092			(451,765		)
Throughput terminal revenues	$	42,812		$	58,068		$	(15,256	)
Storage terminal revenues	263,178			246,205			16,973
Total revenues	305,990			304,273			1,717
Operating expenses	132,922			137,161			(4,239		)
Depreciation and amortization expense	63,260			59,036			4,224
Segment operating income	$	109,808		$	108,076		$	1,732
Fuels Marketing:
Product sales and other revenue	$	376,620		$	310,308		$	66,312
Cost of product sales	357,612			293,138			64,474
Gross margin	19,008			17,170			1,838
Operating expenses	13,579			16,551			(2,972		)
Segment operating income	$	5,429		$	619		$	4,810
Consolidation and Intersegment Eliminations:
Revenues	$	(7,672	)	$	(11,522	)	$	3,850
Cost of product sales	(5,327		)	(6,531		)	1,204
Operating expenses	(2,346		)	(4,992		)	2,646
Total	$	1		$	1		$	—
Consolidated Information:
Revenues	$	922,918		$	843,507		$	79,411
Cost of product sales	352,285			286,607			65,678
Operating expenses	217,426			217,883			(457		)
Depreciation and amortization expense	120,073			102,504			17,569
Segment operating income	233,134			236,513			(3,379		)
General and administrative expenses	58,199			46,442			11,757
Other depreciation and amortization expense	4,392			4,289			103
Consolidated operating income	$	170,543		$	185,782		$	(15,239	)

35

Pipeline

Total revenues increased $7.5 million and total throughputs increased 71,354 barrels per day for the six months ended June 30, 2017, compared to the six months ended June 30, 2016, primarily due to:

• an increase in revenues of $9.5 million and an increase in throughputs of 85,066 barrels per day from our recently acquired Permian Crude System;

• an increase in revenues of $4.8 million and an increase in throughputs of 5,218 barrels per day on our Ammonia Pipeline mainly due to an early planting season resulting from warmer weather;

• an increase in revenues of $4.6 million and an increase in throughputs of 3,201 barrels per day on our East Pipeline due to the completion of various storage projects along the pipeline; and

• an increase in revenues of $2.2 million and an increase in throughputs of 17,838 barrels per day due to increased production at the refinery served by our McKee System pipelines.

These increases were partially offset by a decrease in revenues of $9.0 million and a decrease in throughputs of 17,875 barrels per day due to a turnaround in the second quarter of 2017 at the refinery served by the North Pipeline. Revenues decreased $5.5 million due to a decrease in throughputs of 32,641 barrels per day on our Eagle Ford System mainly due to reduced production in this sustained low crude oil price environment.

Operating expenses increased $4.1 million for the six months ended June 30, 2017, compared to the six months ended June 30, 2016, primarily due to our acquisition of the Permian Crude System.

Depreciation and amortization expense increased $13.3 million for the six months ended June 30, 2017, compared to the

six months ended June 30, 2016, mainly due to our acquisition of the Permian Crude System and the completion of various pipeline projects.

Storage

Beginning January 1, 2017, our agreements for our refinery crude storage tanks at Corpus Christi, TX, Texas City, TX and Benicia, CA changed from throughput-based to storage-based. Excluding the effect from the change to these agreements, throughput terminal revenues would have increased $4.4 million and throughputs would have increased 9,133 barrels per day for the six months ended June 30, 2017, compared to the six months ended June 30, 2016. Throughput terminal revenues increased $8.0 million due to an increase in throughputs of 28,955 barrels per day at our Corpus Christi North Beach terminal, mainly resulting from the Martin Terminal Acquisition. Revenues also increased $0.7 million and throughputs increased 19,187 barrels per day at our McKee System terminals due to new customer contracts. These increases in revenues and throughputs were partially offset by decreased revenues of $3.4 million and decreased throughputs of 32,694 barrels per day at our Paulsboro terminal as a customer diverted barrels to other terminals.

Excluding the effect of the change to the refinery storage tank agreements described above, storage terminal revenues would have decreased $2.6 million for the six months ended June 30, 2017, compared to the six months ended June 30, 2016. Revenues decreased $6.3 million at our Texas City terminals due to a decrease in customer base, lower reimbursable revenues and lower throughput and related handling fees. Revenues also decreased $3.3 million at our Point Tupper terminal mainly resulting from a decrease in customer base. These revenue decreases were partially offset by higher revenues of $6.3 million at our North East Terminals, mainly resulting from new customer contracts and rate escalations, as well as increased throughput and related handling fees.

Operating expenses decreased $4.2 million for the six months ended June 30, 2017, compared to the six months ended June 30, 2016, primarily due to:

• a decrease of $3.1 million in reimbursable expenses, mainly at our Texas City terminals, consistent with the decrease in reimbursable revenues at Texas City;

• a decrease of $3.0 million in maintenance expenses primarily at terminals in our northeast region and at our Point Tupper terminal; and

• a decrease of $1.9 million in compensation expenses resulting from changes in our revenue agreements for our crude refinery storage tanks and lower employee benefit costs.

These decreases were partially offset by increased operating expenses of $4.7 million as a result of the Martin Terminal Acquisition.

Depreciation and amortization expense increased $4.2 million for the six months ended June 30, 2017, compared to the six months ended June 30, 2016, as a result of the Martin Terminal Acquisition and the completion of various storage projects.

36

Fuels Marketing

Segment operating income increased $4.8 million for the six months ended June 30, 2017, compared to the six months ended June 30, 2016, primarily due to a reduction in losses of $7.3 million from our fuel oil trading operations due to improved gross margins and lower operating expenses. This improvement was partially offset by a decrease in segment operating income of $1.6 million from our bunker fuel operations, mainly due to lower gross margins at our St. Eustatius terminal.

Consolidation and Intersegment Eliminations

Revenue and operating expense eliminations primarily relate to storage fees charged to the fuels marketing segment by the storage segment. Cost of product sales eliminations represent expenses charged to the fuels marketing segment for costs associated with inventory that are expensed once the inventory is sold.

General

General and administrative expenses increased $11.8 million for the six months ended June 30, 2017, compared to the six months ended June 30, 2016, primarily due to transaction costs related to the Navigator Acquisition.

Interest expense, net increased $13.7 million for the six months ended June 30, 2017, compared to the six months ended June 30, 2016, mainly due to the issuance of $550.0 million of 5.625% senior notes in April 2017 and as a result of fees for a bridge loan commitment to potentially assist with the financing of the Navigator Acquisition. We did not enter into or borrow under the bridge loan. Interest expense also increased as a result of lower interest income due to the termination of the Axeon Term Loan in February 2017. Please refer to Note 6 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a discussion of the Axeon Term Loan and related credit support.

Income tax expense decreased $2.6 million for the six months ended June 30, 2017, compared to the six months ended June 30, 2016, primarily due to a reduction in withholding taxes related to certain of our foreign subsidiaries.

37

TRENDS AND OUTLOOK

Our business model is strategically diversified for stability, as well as growth: we provide a broad array of services to a diverse customer base in sectors across the energy industry with our portfolio of assets positioned in geographic markets around the globe. We believe this approach serves to both protect our results, even through challenging economic conditions, and position us for continued growth.

We believe that the fact that we provide both storage and pipeline services, for crude and refined products, to customers across the country and around the world, offers some insulation from the impact of commodity market price fluctuations on our results of operations. Since higher crude oil prices have tended to benefit our producer customers, high prices have also correlated with increased demand for our crude oil pipeline services. On the other hand, lower crude oil prices, when coupled with an industry expectation of higher prices in the future, or a contango market, has historically correlated with increased demand from trading companies for our storage services. In the locations at which our assets are integrated physically with the refineries the assets serve, we believe the results generated by those assets depend to a greater degree on each refinery’s continuing need to receive, store and transport the crude and refined products than on crude or refined product prices.

The Navigator Acquisition broadened our geographic footprint and marked our entry into the Permian Basin, one of the fastest-growing basins in the United States. The Permian Basin currently represents approximately forty percent of all onshore rig activity in the United States, and rig count growth in the Permian continues to outpace all other domestic shale plays. In addition, our Permian Crude System is located in the most economic and highest growth counties in the basin, with some of the lowest break-even values in the United States, and offers our customers access to multiple downstream end-markets. We believe this system provides a strong growth platform in the most prolific basin in the United States.

While the addition of the Permian Crude System to our asset portfolio could increase the impact of crude oil prices on our results of operations, we believe that our contracts, many of which are long-term, take-or-pay arrangements for committed storage or throughput capacity, should continue to help to blunt the impact of volatility of crude oil prices on our results of operations. For example, although our assets in the Eagle Ford region have experienced lower throughputs as producers slowed production in the wake of the crude oil price downturn, the fact that we have minimum volume throughput contracts, which have terms extending into mid-2018 and beyond, with large, creditworthy customers has limited the negative impact of that slowdown on our results of operations. In addition to acreage dedication agreements for over 500,000 acres, the Permian Crude System’s contracts include several long-term ship-or-pay contracts with minimum volume commitments from, as well as storage contracts with, creditworthy customers, which should serve as a buffer for our results of operations from declines in Permian Basin production.

In order to fund the purchase price for the Navigator Acquisition, we issued common units and a new series of preferred units, as well as long-term debt, which increased our common and preferred unit distributions and interest expense. However, we also expect the acquisition to increase earnings and volumes in our pipeline segment over the remainder of 2017, mainly due to the approximately 92,000 barrels per day ship-or-pay volume commitments we acquired with the Permian Crude System.

We expect our storage segment to benefit in 2017 from favorable storage contract renewals, the Martin Terminal Acquisition and lower operating expenses.

Our outlook for the partnership, both overall and for any of our segments, may change, as we base our expectations on our continuing evaluation of a number of factors, many of which are outside our control. These factors include, but are not limited to, the state of the economy and the capital markets, changes to our customers’ refinery maintenance schedules and unplanned refinery downtime, crude oil prices, the supply of and demand for crude oil, refined products and anhydrous ammonia, demand for our transportation and storage services and changes in laws or regulations affecting our assets.

38

LIQUIDITY AND CAPITAL RESOURCES

Overview

Our primary cash requirements are for distributions to our partners, debt service, capital expenditures, acquisitions and operating expenses. Our partnership agreement requires that we distribute all “Available Cash” to our common limited partners and general partner each quarter, and this term is defined in the partnership agreement generally as cash on hand at the end of the quarter, plus certain permitted borrowings made subsequent to the end of the quarter, less cash reserves determined by our board of directors.

Each year, our objective is to fund our total annual reliability capital expenditures and distribution requirements with our net cash provided by operating activities during that year. If we do not generate sufficient cash from operations to meet that objective, we utilize cash on hand or other sources of cash flow, which in the past have primarily included borrowings under our revolving credit agreement, sales of non-strategic assets and, to the extent necessary, funds raised through equity or debt offerings under our shelf registration statements. We have typically funded our strategic capital expenditures and acquisitions from external sources, primarily borrowings under our revolving credit agreement or funds raised through equity or debt offerings. However, our ability to raise funds by issuing debt or equity depends on many factors beyond our control. Our risk factors in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2016 describe the risks inherent to these sources of funding and the availability thereof.

During periods when our cash flow from operations is less than our distribution and reliability capital requirements, we may maintain our distribution level because we can utilize other sources of Available Cash, as provided in our partnership agreement, including borrowings under our revolving credit agreement and proceeds from the sales of assets. Our risk factors in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2016 describe the risks inherent in our ability to maintain or grow our distribution.

For 2017, we expect an increase in total cash distributed to our unitholders and higher interest costs due to our issuances in April 2017 of (i) 14,375,000 common units, (ii) 15,400,000 of 7.625% Series B Preferred Units and (iii) $550.0 million of 5.625% senior notes. See below for additional discussion of these equity and debt issuances. However, we expect cash flow from operations, combined with a portion of the proceeds from the termination of the Axeon Term Loan of $110.0 million to cover our distribution and reliability capital requirements for 2017.

Cash Flows for the Six Months Ended June 30, 2017 and 2016

The following table summarizes our cash flows from operating, investing and financing activities:

	Six Months Ended June 30,
	2017			2016
	(Thousands of Dollars)
Net cash provided by (used in):
Operating activities	$	208,988		$	215,033
Investing activities	(1,466,751		)	(108,035		)
Financing activities	1,250,363			(127,230		)
Effect of foreign exchange rate changes on cash	649			4,389
Net decrease in cash and cash equivalents	$	(6,751	)	$	(15,843	)

Net cash provided by operating activities for the six months ended June 30, 2017 was $209.0 million, compared to $215.0 million for the six months ended June 30, 2016, primarily due to lower net income in 2017. See “Working Capital Requirements” below for a discussion of changes in working capital.

For the six months ended June 30, 2017, net cash provided by operating activities and a portion of the proceeds from the termination of the Axeon Term Loan of $110.0 million were used to fund our distributions to unitholders and our general partner in the aggregate amount of $226.8 million and reliability capital expenditures of $15.4 million. The remaining proceeds from the termination of the Axeon Term Loan and the proceeds from debt borrowings, net of repayments, were used to fund our strategic capital expenditures of $93.4 million. Proceeds from our debt and equity issuances of approximately $1.5 billion were used to fund the purchase price of the Navigator Acquisition.

For the six months ended June 30, 2016, net cash provided by operating activities was used to fund our distributions to unitholders and our general partner in the aggregate amount of $196.1 million and reliability capital expenditures of

39

$17.3 million. The proceeds from debt borrowings, net of repayments, and cash on hand were used to fund our strategic capital expenditures.

Revolving Credit Agreement

As of June 30, 2017, our consolidated debt coverage ratio (as defined in our revolving credit agreement) cannot exceed 5.50-to-1.00. The requirement not to exceed a maximum consolidated debt coverage ratio may limit the amount we can borrow under our revolving credit agreement to an amount less than the total amount available for borrowing. As of June 30, 2017, our consolidated debt coverage ratio was 4.6x, and we had $727.5 million available for borrowing. Letters of credit issued under our revolving credit agreement totaled $7.7 million as of June 30, 2017. Please refer to Note 4 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a discussion on our revolving credit agreement.

Other Sources of Liquidity

Other sources of liquidity as of June 30, 2017 consist of the following:

• $365.4 million in revenue bonds pursuant to the Gulf Opportunity Zone Act of 2005 (the GoZone Bonds), with $42.4 million remaining in the trust as of June 30, 2017, supported by $370.2 million in letters of credit;

• a $125.0 million receivables financing agreement between NuStar Energy, NuStar Finance LLC and third-party lenders (the Receivables Financing Agreement), with the amount available for borrowing based on the availability of eligible receivables and other customary factors and conditions; and

• two short-term line of credit agreements with an uncommitted borrowing capacity of up to $60.0 million, with $45.0 million of borrowings outstanding as of June 30, 2017.

We are also a party to a $100.0 million uncommitted letter of credit agreement, which provides for standby letters of credit or guarantees with a term of up to one year (LOC Agreement). As of June 30, 2017, we had no letters of credit issued under the LOC Agreement. Please refer to Note 4 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a discussion of certain of our debt agreements.

Issuance of Common Units

On April 18, 2017, we issued 14,375,000 common units representing limited partner interests at a price of $46.35 per unit. We used the net proceeds from this offering of $657.5 million, including a contribution of $13.6 million from our general partner to maintain its 2% general partner interest, to fund a portion of the purchase price for the Navigator Acquisition. Beginning with the distribution earned for the second quarter of 2017, our general partner will not receive incentive distributions with respect to these common units. Our general partner amended and restated our partnership agreement to waive up to an aggregate $22.0 million of the quarterly incentive distributions to our general partner for any NS common units issued from the date of the Acquisition Agreement (other than those attributable to NS common units issued under any equity compensation plan) for ten consecutive quarters. Please refer to Note 10 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for further discussion.

Issuance of Series B Preferred Units

OnApril 28, 2017, we issued 15,400,000 of our Series B Preferred Units representing limited partner interests at a price of $25.00 per unit. We used the net proceeds of $371.8 million from the issuance of the Series B Preferred Units to fund a portion of the purchase price for the Navigator Acquisition and to pay related fees and expenses. Distributions on the Series B Preferred Units are payable out of any legally available funds, accrue and are cumulative from the date of original issuance of the Series B Preferred Units and are payable on the 15^th day of each of March, June, September and December of each year (beginning on September 15, 2017) to holders of record on the first day of each payment month. The initial distribution rate on the Series B Preferred Units to, but not including, June 15, 2022 is 7.625% per annum of the $25.00 liquidation preference per unit (equal to $1.90625 per unit per annum). On and after June 15, 2022, distributions on the Series B Preferred Units accumulate at a percentage of the $25.00 liquidation preference equal to an annual floating rate of the three-month LIBOR plus a spread of 5.643%. Please refer to Note 10 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for further discussion.

Issuance of 5.625% Senior Notes

OnApril 28, 2017, NuStar Logistics issued$550.0 millionof5.625%senior notes dueApril 28, 2027. We used the net proceeds of$543.3 millionfrom the offering to fund a portion of the purchase price for the Navigator Acquisition and to pay related fees and expenses. The interest on the 5.625% senior notes is payable semi-annually in arrears on April 28 and October 28 of each year beginning on October 28, 2017. The 5.625% senior notes do not have sinking fund requirements. These notes rank equally with existing senior unsecured indebtedness and senior to existing subordinated indebtedness of NuStar Logistics. The 5.625% senior notes contain restrictions on NuStar Logistics’ ability to incur secured indebtedness unless the same security is also provided for the benefit of holders of the senior notes. In addition, the senior notes limit NuStar Logistics’ ability to incur indebtedness secured by certain liens, engage in certain sale-leaseback transactions and engage in certain consolidations,

40

mergers or asset sales.Please refer to Note 4 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for further discussion.

Capital Requirements

Our operations require significant investments to maintain, upgrade or enhance the operating capacity of our existing assets. Our capital expenditures consist of:

• strategic capital expenditures, such as those to expand or upgrade the operating capacity, increase efficiency or increase the earnings potential of existing assets, whether through construction or acquisition, as well as certain capital expenditures related to support functions; and

• reliability capital expenditures, such as those required to maintain the existing operating capacity of existing assets or extend their useful lives, as well as those required to maintain equipment reliability and safety.

The following table summarizes our capital expenditures, and the amount we expect to spend for 2017:

	Strategic Capital Expenditures		Reliability Capital Expenditures		Total
	(Thousands of Dollars)
For the six months ended June 30:
2017	$	93,447	$	15,402	$	108,849
2016	$	78,039	$	17,322	$	95,361
Expected for the year ended December 31, 2017 (a)	$ 380,000 - 420,000		$ 35,000 - 55,000		$ 415,000 - 475,000

(a) Excludes the Navigator Acquisition.

We continue to evaluate our capital spending forecast and make changes as economic conditions warrant, and our actual capital expenditures for 2017 may increase or decrease from our current projections. We believe we can fund our currently expected capital expenditures with cash on hand, combined with the sources of liquidity previously described. Our internal growth projects can be accelerated or scaled back depending on market conditions or customer demand.

Working Capital Requirements

Working capital requirements, particularly in our fuels marketing segment, may vary with the seasonality of demand and the volatility of commodity prices for the products we market. This seasonality in demand and the volatility of commodity prices affect our accounts receivable and accounts payable balances, which vary depending on the timing of payments.

Axeon Term Loan and Credit Support

On February 22, 2017, we settled and terminated the $190.0 million Axeon Term Loan, pursuant to which we also provided credit support, such as guarantees, letters of credit and cash collateral, as applicable, of up to $125.0 million to Axeon. We received $110.0 million in settlement of the Axeon Term Loan, and our obligation to provide ongoing credit support to Axeon ceased. Please refer to Note 6 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a discussion of the Axeon Term Loan and credit support.

Distributions

General and Common Limited Partners. The following table reflects the allocation of total cash distributions to the general and common limited partners applicable to the period in which the distributions were earned:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
	(Thousands of Dollars, Except Per Unit Data)
General partner interest	$	2,302	$	1,961	$	4,645	$	3,922
General partner incentive distribution	10,912		10,805		23,824		21,610
Total general partner distribution	13,214		12,766		28,469		25,532
Common limited partners’ distribution	101,869		85,285		203,782		170,570
Total cash distributions	$	115,083	$	98,051	$	232,251	$	196,102
Cash distributions per unit applicable to common limited partners	$	1.095	$	1.095	$	2.190	$	2.190

41

Distribution payments to our general and common limited partners are made within 45 days after the end of each quarter as of a record date that is set after the end of each quarter. The following table summarizes information related to our quarterly cash distributions to our general and common limited partners:

Quarter Ended	Cash Distributions Per Unit		Total Cash Distributions		Record Date	Payment Date
			(Thousands of Dollars)
June 30, 2017 (a)	$	1.095	$	115,083	August 7, 2017	August 11, 2017
March 31, 2017	$	1.095	$	117,168	May 8, 2017	May 12, 2017
December 31, 2016	$	1.095	$	98,971	February 8, 2017	February 13, 2017

(a) The distribution was announced on July 28, 2017.

Preferred Units. The following table summarizes information related to our quarterly cash distributions on our Series A and Series B Preferred Units:

Period	Cash Distributions Per Unit		Total Cash Distributions		Record Date	Payment Date
			(Thousands of Dollars)
Series A Preferred Units:
June 15, 2017 - September 14, 2017 (a)	$	0.53125	$	4,813	September 1, 2017	September 15, 2017
March 15, 2017 - June 14, 2017	$	0.53125	$	4,813	June 1, 2017	June 15, 2017
November 25, 2016 - March 14, 2017	$	0.64930556	$	5,883	March 1, 2017	March 15, 2017
Series B Preferred Units:
April 28, 2017 - September 14, 2017 (a)	$	0.725434028	$	11,172	September 1, 2017	September 15, 2017

(a) The distribution was announced on July 28, 2017.

Debt Obligations

As of June 30, 2017, we were a party to the following debt agreements:

• Revolving credit agreement due October 29, 2019, with $764.8 million of borrowings outstanding as of June 30, 2017;

• 7.65% senior notes due April 15, 2018 with a face value of $350.0 million; 4.80% senior notes due September 1, 2020 with a face value of $450.0 million; 6.75% senior notes due February 1, 2021 with a face value of $300.0 million; 4.75% senior notes due February 1, 2022 with a face value of $250.0 million; 5.625%senior notes dueApril 28, 2027with a face value of $550.0 million; and7.625% subordinated notes due January 15, 2043 with a face value of $402.5 million.

• $365.4 million in GoZone Bonds due from 2038 to 2041;

• Line of credit agreements with $45.0 million of borrowings outstanding as of June 30, 2017; and

• Receivables Financing Agreement due June 15, 2018, with $53.3 million of borrowings outstanding as of June 30, 2017.

Management believes that, as of June 30, 2017, we are in compliance with the ratios and covenants contained in our debt instruments. A default under certain of our debt agreements would be considered an event of default under other of our debt instruments. Please refer to Note 4 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a discussion of certain of our debt agreements.

Credit Ratings

The following table reflects the current outlook and ratings that have been assigned to our debt:

	Standard & Poor’s  Ratings Services	Moody’s Investor  Service Inc.	Fitch, Inc.
Ratings	BB+	Ba1	BB
Outlook	Stable	Negative	Stable

42

Following the announcement of the Navigator Acquisition, Standard & Poor’s Ratings Services and Fitch, Inc. affirmed their ratings and outlook, and Moody’s Investor Service Inc. (Moody’s) announced that it was reviewing NuStar Energy and NuStar Logistics for a downgrade. Following their review in the second quarter, Moody’s affirmed their rating and changed their outlook to “Negative.” The change in outlook had no impact on the interest rates payable on the 7.65% senior notes due 2018 or the revolving credit agreement, which are subject to adjustment if our debt rating is downgraded (or upgraded) by certain credit rating agencies, but are not impacted by a change in the outlook.

Interest Rate Swaps

As of June 30, 2017 and December 31, 2016, we were a party to forward-starting interest rate swap agreements for the purpose of hedging interest rate risk. As of June 30, 2017 and December 31, 2016, the aggregate notional amount of these forward-starting interest rate swaps was $600.0 million. Please refer to Note 7 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a more detailed discussion of our interest rate swaps.

Environmental, Health and Safety

Our operations are subject to extensive federal, state and local environmental laws and regulations, in the U.S. and in the other countries in which we operate, including those relating to the discharge of materials into the environment, waste management, remediation, the characteristics and composition of fuels and pollution prevention measures, among others. Our operations are also subject to extensive federal, state and local health and safety laws and regulations, including those relating to worker and pipeline safety, pipeline integrity and operator qualifications. Because more stringent environmental and safety laws and regulations are continuously being enacted or proposed, the level of future expenditures required for environmental, health and safety matters is expected to increase in the future.

Contingencies

We are subject to certain loss contingencies, the outcomes of which could have an adverse effect on our cash flows and results of operations, as further disclosed in Note 5 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements.”

RELATED PARTY TRANSACTIONS

Please refer to Note 8 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a discussion of our related party transactions.

CRITICAL ACCOUNTING POLICIES

The preparation of financial statements in accordance with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Our critical accounting policies are disclosed in our Annual Report on Form 10-K for the year ended December 31, 2016.

NEW ACCOUNTING PRONOUNCEMENTS

Please refer to Note 2 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a discussion of new accounting pronouncements.

43

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Interest Rate Risk

We manage our exposure to changing interest rates principally through the use of a combination of fixed-rate debt and variable-rate debt. In addition, we utilize forward-starting interest rate swap agreements to lock in the rate on the interest payments related to forecasted debt issuances. Borrowings under our variable-rate debt expose us to increases in interest rates.

Please refer to Note 7 of the Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for a more detailed discussion of our interest rate swaps. The following tables present principal cash flows and related weighted-average interest rates by expected maturity dates for our long-term debt:

	June 30, 2017
	Expected Maturity Dates
	2017		2018			2019			2020			2021			There- after			Total			Fair Value
	(Thousands of Dollars, Except Interest Rates)
Long-term Debt:
Fixed-rate	$	—	$	350,000		$	—		$	450,000		$	300,000		$	1,202,500		$	2,302,500		$	2,407,522
Weighted-average interest rate	—		8.2		%	—			4.8		%	6.8		%	6.1		%	6.2		%
Variable-rate	$	—	$	53,300		$	764,821		$	—		$	—		$	365,440		$	1,183,561		$	1,184,186
Weighted-average interest rate	—		2.1		%	2.8		%	—			—			0.9		%	2.2		%

	December 31, 2016
	Expected Maturity Dates
	2017		2018			2019			2020			2021			There- after			Total			Fair Value
	(Thousands of Dollars, Except Interest Rates)
Long-term Debt:
Fixed-rate	$	—	$	350,000		$	—		$	450,000		$	300,000		$	652,500		$	1,752,500		$	1,821,261
Weighted-average interest rate	—		8.2		%	—			4.8		%	6.8		%	6.5		%	6.4		%
Variable-rate	$	—	$	58,400		$	838,992		$	—		$	—		$	365,440		$	1,262,832		$	1,263,501
Weighted-average interest rate	—		1.6		%	2.5		%	—			—			0.7		%	1.9		%

The following table presents information regarding our forward-starting interest rate swap agreements:

Notional Amount					Weighted-Average Fixed Rate				Fair Value
June 30, 2017		December 31, 2016		Period of Hedge	June 30, 2017		December 31, 2016		June 30, 2017			December 31, 2016
(Thousands of Dollars)									(Thousands of Dollars)
$	350,000	$	350,000	04/2018 - 04/2028	2.6	%	2.6	%	$	(6,392	)	$	(1,333	)
250,000		250,000		09/2020 - 09/2030	2.8	%	2.8	%	(2,867		)	15
$	600,000	$	600,000		2.7	%	2.7	%	$	(9,259	)	$	(1,318	)

44

Commodity Price Risk

Since the operations of our fuels marketing segment expose us to commodity price risk, we use derivative instruments to attempt to mitigate the effects of commodity price fluctuations. The derivative instruments we use consist primarily of commodity futures and swap contracts. We have a risk management committee that oversees our trading policies and procedures and certain aspects of risk management. Our risk management committee also reviews all new risk management strategies in accordance with our risk management policy, as approved by our board of directors.

We record commodity derivative instruments in the consolidated balance sheets at fair value. We recognize mark-to-market adjustments for derivative instruments designated and qualifying as fair value hedges (Fair Value Hedges) and the related change in the fair value of the associated hedged physical inventory or firm commitment within “Cost of product sales.” For derivative instruments that have associated underlying physical inventory but do not qualify for hedge accounting (Economic Hedges and Other Derivatives), we record the mark-to-market adjustments in “Cost of product sales.”

The commodity contracts disclosed below represent only those contracts exposed to commodity price risk at the end of the period. Please refer to Note 7 of Condensed Notes to Consolidated Financial Statements in Item 1. “Financial Statements” for the volume and related fair value of all commodity contracts.

	June 30, 2017
	Contract Volumes	Weighted Average				Fair Value of Current Asset (Liability)
		Pay Price		Receive Price
	(Thousands of Barrels)					(Thousands of Dollars)
Fair Value Hedges:
Futures – long:
(refined products)	7	$	61.64	N/A		$	4
Futures – short:
(refined products)	65	N/A		$	59.91	$	(154	)
Swaps – long:
(refined products)	60	$	41.10	N/A		$	158
Swaps – short:
(refined products)	101	N/A		$	43.39	$	(34	)
Economic Hedges and Other Derivatives:
Futures – short:
(refined products)	5	N/A		$	59.79	$	(13	)
Swaps – long:
(refined products)	337	$	42.52	N/A		$	486
Swaps – short:
(refined products)	339	N/A		$	42.17	$	(608	)
Total fair value of open positions exposed to commodity price risk						$	(161	)

45

	December 31, 2016
	Contract Volumes	Weighted Average				Fair Value of Current Asset (Liability)
		Pay Price		Receive Price
	(Thousands of Barrels)					(Thousands of Dollars)
Fair Value Hedges:
Futures – long:
(crude oil and refined products)	47	$	55.53	N/A		$	2
Futures – short:
(crude oil and refined products)	107	N/A		$	58.79	$	(243	)
Swaps – long:
(refined products)	84	$	45.99	N/A		$	141
Swaps – short:
(refined products)	573	N/A		$	41.87	$	(3,322	)
Economic Hedges and Other Derivatives:
Futures – long:
(crude oil and refined products)	18	$	72.06	N/A		$	10
Futures – short:
(crude oil and refined products)	9	N/A		$	71.88	$	(7	)
Swaps – long:
(refined products)	869	$	42.20	N/A		$	4,737
Swaps – short:
(refined products)	874	N/A		$	41.40	$	(5,459	)
Forward purchase contracts:
(crude oil)	310	$	52.78	N/A		$	499
Forward sales contracts:
(crude oil)	310	N/A		$	52.76	$	(507	)
Total fair value of open positions exposed to commodity price risk						$	(4,149	)

46

Item 4. Controls and Procedures

(a) Evaluation of disclosure controls and procedures.

Our management has evaluated, with the participation of the principal executive officer and principal financial officer of NuStar GP, LLC, the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934) as of the end of the period covered by this report, and has concluded that our disclosure controls and procedures were effective as of June 30, 2017.

(b) Changes in internal control over financial reporting.

There has been no change in our internal control over financial reporting that occurred during our last fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

47

PART II - OTHER INFORMATION

Item 6. Exhibits

Exhibit Number		Description
2.01		Membership Interest Purchase and Sale Agreement, dated April 11, 2017, by and between NuStar Logistics, L.P., NuStar Energy L.P. and FR Navigator Holdings LLC (incorporated by reference to Exhibit 2.1 to NuStar Energy L.P.’s Current Report on Form 8-K filed April 11, 2017 (File No. 001-16417))
3.01		Fifth Amended and Restated Agreement of Limited Partnership of NuStar Energy L.P., dated as of April 28, 2017 (incorporated by reference to Exhibit 3.1 to NuStar Energy L.P.’s Current Report on Form 8-K filed April 28, 2017 (File No. 001-16417))
4.01		Eighth Supplemental Indenture, dated as of April 28, 2017, among NuStar Logistics, L.P., as Issuer, NuStar Energy L.P., as Guarantor, and Wells Fargo Bank, National Association, as Successor Trustee (incorporated by reference to Exhibit 4.4 to NuStar Energy L.P.’s Current Report on Form 8-K filed April 28, 2017 (File No. 001-16417))
10.01		Ninth Amendment to Letter of Credit Agreement, dated as of April 17, 2017, among NuStar Logistics, L.P., NuStar Energy L.P., the Lenders party thereto and Mizuho Bank, Ltd., as Issuing Bank and Administrative Agent (incorporated by reference to Exhibit 10.03 to NuStar Energy L.P.’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017 (File No. 001-16417))
*10.02		Maturity Extension Letter (Amendment No. 4) to Letter of Credit Agreement and Subsidiary Guaranty Agreement dated as of July 13, 2017 among NuStar Logistics, L.P., NuStar Energy L.P., the Lenders party thereto and The Bank of Tokyo-Mitsubishi UFJ, Ltd., as Issuing Bank and Administrative Agent
*12.01		Statement of Computation of Ratio of Earnings to Fixed Charges
*31.01		Rule 13a-14(a) Certification (under Section 302 of the Sarbanes-Oxley Act of 2002) of principal executive officer
*31.02		Rule 13a-14(a) Certification (under Section 302 of the Sarbanes-Oxley Act of 2002) of principal financial officer
**32.01		Section 1350 Certification (under Section 906 of the Sarbanes-Oxley Act of 2002) of principal executive officer
**32.02		Section 1350 Certification (under Section 906 of the Sarbanes-Oxley Act of 2002) of principal financial officer
*101.INS		XBRL Instance Document
*101.SCH		XBRL Taxonomy Extension Schema Document
*101.CAL		XBRL Taxonomy Extension Calculation Linkbase Document
*101.DEF		XBRL Taxonomy Extension Definition Linkbase Document
*101.LAB		XBRL Taxonomy Extension Label Linkbase Document
*101.PRE		XBRL Taxonomy Extension Presentation Linkbase Document
*	Filed herewith.
**	Furnished herewith.

48

SIGNATURES

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.

NUSTAR ENERGY L.P.

(Registrant)

By: Riverwalk Logistics, L.P., its general partner

By: NuStar GP, LLC, its general partner

By:	/s/ Bradley C. Barron
	Bradley C. Barron
	President and Chief Executive Officer
	August 8, 2017
By:	/s/ Thomas R. Shoaf
	Thomas R. Shoaf
	Executive Vice President and Chief Financial Officer
	August 8, 2017
By:	/s/ Jorge A. del Alamo
	Jorge A. del Alamo
	Senior Vice President and Controller
	August 8, 2017

49

EX-10.02

1251 Avenue of the Americas New York, NY 10020 Exhibit 10.02

NuStar Logistics L.P.

NuStar Energy L.P.

Attention: Thomas R. Shoaf, Executive Vice President and Chief Financial Officer

July 13, 2017

RE: Maturity Date Extension

Reference is made to (i) that certain Letter of Credit Agreement, dated as of September 3, 2014 (the “Original Agreement”), (ii) that certain Amendment No.1 to Letter of Credit Agreement and Subsidiary Guaranty Agreement dated as of November 3, 2014 (the “Amendment No. 1”), (iii) that certain Maturity Date Extension Letter Amendment dated on or about August 18, 2015 (the “2015 Extension Letter”) and (iv) that certain Maturity Date Extension Letter Amendment dated on or about July 15, 2016 (the “2016 Extension Letter”, together with the Original Agreement, Amendment No. 1, the 2015 Extension Letter, and as further amended, restated, supplemented or otherwise modified from time to time, the “Agreement”) by and among NuStar Logistics, L.P. and NuStar Energy L.P., both Delaware limited partnerships (together the “NuStar Parties”), the lenders from time to time a party thereto (the “Lenders”), and The Bank of Tokyo Mitsubishi UFJ, Ltd., as Issuing Bank and Administrative Agent (the “Agent”). Capitalized terms used but not defined herein shall have the respective meanings given to such terms in the Agreement.

Whereas the Amendment was entered into as of November 3, 2014 and the Agreement was intended to expire as of September 2, 2017, and whereas the Lenders, the NuStar Parties and the Agent mutually wish to extend the expiry of the Agreement until September 2, 2018, now therefore, for good and reasonable consideration, the sufficiency of which is hereby acknowledged, the term “Maturity Date” as set forth in the Agreement is hereby amended to read “September 2, 2018” and Schedule 3.12 to the Agreement is hereby deleted in its entirety and replaced with Schedule 3.12 attached hereto.

No other provision of the Agreement is amended by this letter. The NuStar Parties hereby confirm that the Agreement remains in full force and effect as amended hereby, and that all obligations of such NuStar parties set forth therein are ratified and reconfirmed. The execution, delivery and effectiveness of this letter shall not, except as expressly provided herein, operate as a waiver of any right, power or remedy of any Lender or the Agent under the Agreement or any of the Loan Documents, nor constitute a waiver of any provision of the Agreement or any of the Loan Documents. This Agreement shall be construed in accordance with and governed by the law of the State of New York.

Regards,

THE BANK OF TOKYO-MITSUBISHI UFJ, LTD.

By:	/s/ Anastasiya Haurylenia
Name:	Anastasiya Haurylenia
Title:	Vice President, Portfolio Management

SCHEDULE 3.12

Subsidiaries

Subsidiary	Jurisdiction of Formation	Restricted/ Unrestricted/Material	Ownership Percentage
Bicen Development Corporation N.V.	Netherlands	Restricted	100%
Cooperatie NuStar Holdings U.A.	Netherlands	Restricted	100%
LegacyStar Services, LLC	Delaware	Restricted	100%
NS Security Services, LLC	Delaware	Restricted	100%
NuStar Burgos, LLC	Delaware	Restricted	100%
NuStar Caribe Terminals, Inc.	Delaware	Restricted	100%
NuStar Eastham Limited	England	Restricted	100%
NuStar Energy Services, Inc.	Delaware	Restricted	100%
NuStar Finance LLC	Delaware	Restricted	100%
NuStar GP, Inc.	Delaware	Restricted	100%
NuStar Grangemouth Limited	England	Restricted	100%
NuStar Holdings B.V.	Netherlands	Restricted	100%
NuStar Internacional, S de R.L. de C.V.	Mexico	Restricted	100%
NuStar Logistics, L.P.	Delaware	Restricted - Material	100%
NuStar Permian CC Storage, LLC	Delaware	Restricted	100%
NuStar Permian Crude Logistics, LLC	Delaware	Restricted	100%
NuStar Permian Crude Storage, LLC	Delaware	Restricted	100%
NuStar Permian Field Services, LLC	Delaware	Restricted	100%
NuStar Permian Holdings, LLC	Delaware	Restricted	100%
NuStar Permian Operating, LLC	Delaware	Restricted	100%
NuStar Permian Services, LLC	Delaware	Restricted	100%
NuStar Permian Transportation and Storage, LLC	Delaware	Restricted	100%
NuStar Pipeline Company, LLC	Delaware	Restricted	100%
NuStar Pipeline Holding Company, LLC	Delaware	Restricted	100%
NuStar Pipeline Operating Partnership L.P.	Delaware	Restricted - Material	100%
NuStar Pipeline Partners L.P.	Delaware	Restricted	100%
NuStar Refining, LLC	Delaware	Restricted	100%
NuStar Services Company LLC	Delaware	Restricted	100%
NuStar Supply & Trading LLC	Delaware	Restricted	100%
NuStar Terminals Antilles N.V.	Curacao	Restricted	100%
NuStar Terminals B.V.	Netherlands	Restricted	100%

Subsidiary	Jurisdiction of Formation	Restricted/ Unrestricted/Material	Ownership Percentage
NuStar Terminals Canada Co.	Canada	Restricted	100%
NuStar Terminals Canada Holdings Co.	Canada	Restricted	100%
NuStar Terminals Canada Partnership	Canada	Restricted	100%
NuStar Terminals Corporation N.V.	Curacao	Restricted	100%
NuStar Terminals Delaware, Inc.	Delaware	Restricted	100%
NuStar Terminals International N.V.	Curacao	Restricted	100%
NuStar Terminals Limited	England	Restricted	100%
NuStar Terminals Marine Services N.V.	Netherlands	Restricted	100%
NuStar Terminals New Jersey, Inc.	Delaware	Restricted	100%
NuStar Terminals N.V.	Netherlands	Restricted - Material	100%
NuStar Terminals Operations Partnership L.P.	Delaware	Restricted	100%
NuStar Terminals Partners TX L.P.	Delaware	Restricted	100%
NuStar Terminals Services, Inc.	Delaware	Restricted	100%
NuStar Terminals Texas, Inc.	Delaware	Restricted	100%
NuStar Texas Holdings, Inc.	Delaware	Restricted	100%
Petroburgos, S. de R.L. de C.V.	Mexico	Restricted	100%
Point Tupper Marine Services Co.	Canada	Restricted	100%
Saba Company N.V.	Netherlands	Restricted	100%
Seven Seas Steamship Company (Sint Eustatius) N.V.	Netherlands	Restricted	100%
Shore Terminals LLC	Delaware	Restricted	100%
ST Linden Terminal, LLC	Delaware	Restricted	100%
Star Creek Ranch, LLC	Delaware	Restricted	100%

Acknowledged and Agreed:
NUSTAR LOGISTICS, L.P.
By:	NuStar GP, Inc., its General Partner
By:	/s/ Thomas R. Shoaf
Name:	Thomas R. Shoaf
Title:	Executive Vice President and Chief Financial Officer

NUSTAR ENERGY L.P.
By:	Riverwalk Logistics, L.P., its General Partner
By:	NuStar GP, LLC, its General Partner
By:	/s/ Thomas R. Shoaf
Name:	Thomas R. Shoaf
Title:	Executive Vice President and Chief Financial Officer

GUARANTORS
NUSTAR PIPELINE OPERATING PARTNERSHIP L.P.
By:	NuStar Pipeline Company, LLC, its General Partner
By:	/s/ Thomas R. Shoaf
Name:	Thomas R. Shoaf
Title:	Executive Vice President and Chief Financial Officer

SUMITOMO MITSUI BANKING

CORPORATION, as Lender

By:	/s/ James D. Weinstein
Name:	James D. Weinstein
Title:	Managing Director

THE BANK OF TOKYO-MITSUBISHI UFJ, LTD., as Issuing Bank and a Lender

By:	/s/ Anastasiya Haurylenia
Name:	Anastasiya Haurylenia
Title:	Vice President, Portfolio Management

THE BANK OF TOKYO-MITSUBISHI UFJ, LTD., as Administrative Agent

By:	/s/ Lawrence Blat
Name:	Lawrence Blat
Title:	Vice President Syndications

EX-12.01

Exhibit 12.01

NUSTAR ENERGY L.P.

STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(Thousands of Dollars, Except Ratio Data)

	Six Months
	Ended
	June 30,			Years Ended December 31,
	2017			2016			2015			2014			2013			2012
Earnings:
Income (loss) from continuing operations before provision for income taxes and income from equity investees	$	88,745		$	161,976		$	320,658		$	220,174		$	(132,786	)	$	(132,173	)
Add:
Fixed charges	89,890			154,085			150,661			153,236			149,090			122,286
Amortization of capitalized interest	904			1,722			1,573			1,385			1,216			1,012
Distributions from joint ventures	—			—			2,500			7,587			7,956			6,364
Less:
Interest capitalized	(1,675		)	(3,414		)	(5,549		)	(5,667		)	(4,501		)	(7,737		)
Total earnings	$	177,864		$	314,369		$	469,843		$	376,715		$	20,975		$	(10,248	)
Fixed charges:
Interest expense, net	$	82,026		$	138,350		$	131,868		$	132,281		$	127,119		$	90,535
Interest capitalized	1,675			3,414			5,549			5,667			4,501			7,737
Rental expense interest factor (a)	6,189			12,321			13,244			15,288			17,470			24,014
Total fixed charges	$	89,890		$	154,085		$	150,661		$	153,236		$	149,090		$	122,286
Preferred unit distributions (b)	$	14,763		$	1,925
Total fixed charges plus preferred unit distributions (b)	$	104,653		$	156,010
Ratio of earnings to fixed charges	2.0x			2.0x			3.1x			2.5x			(c)			(d)
Ratio of earnings to fixed charges plus preferred unit distributions (b)	1.7x			2.0x

(a) The interest portion of rental expense represents one-third of rents, which is deemed representative of the interest portion of rental expense.

(b) For the years ended December 31, 2015, 2014, 2013 and 2012, we had no preferred units outstanding.

(c) For the year ended December 31, 2013, earnings were insufficient to cover fixed charges by $128.1 million. The deficiency included a goodwill impairment loss of $304.5 million related to the Statia terminals reporting unit.

(d) For the year ended December 31, 2012, earnings were insufficient to cover fixed charges by $132.5 million. The deficiency included the effect of $271.8 million of impairment losses mainly resulting from the write-down of the carrying value of our long-lived assets related to our asphalt operations, including fixed assets, goodwill, intangible assets and other long-term assets.

EX-31.01

Exhibit 31.01

CERTIFICATION PURSUANT TO SECTION 302

OF THE SARBANES-OXLEY ACT OF 2002

I, Bradley C. Barron, certify that:

1. I have reviewed this quarterly report on Form 10-Q of NuStar Energy L.P. (the “registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 8, 2017

/s/ Bradley C. Barron

Bradley C. Barron

President and Chief Executive Officer

EX-31.02

Exhibit 31.02

CERTIFICATION PURSUANT TO SECTION 302

OF THE SARBANES-OXLEY ACT OF 2002

I, Thomas R. Shoaf, certify that:

1. I have reviewed this quarterly report on Form 10-Q of NuStar Energy L.P. (the “registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 8, 2017

/s/ Thomas R. Shoaf

Thomas R. Shoaf

Executive Vice President and Chief Financial Officer

EX-32.01

Exhibit 32.01

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 NuStar Energy L.P. (the Partnership) on Form 10-Q for the quarter ended June 30, 2017, as filed with the Securities and Exchange Commission on the date hereof (the Report), I, Bradley C. Barron, President and Chief Executive Officer of NuStar GP, LLC, the general partner of the general partner of the Partnership, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Partnership.

/s/ Bradley C. Barron

Bradley C. Barron

President and Chief Executive Officer

August 8, 2017

EX-32.02

Exhibit 32.02

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 NuStar Energy L.P. (the Partnership) on Form 10-Q for the quarter ended June 30, 2017, as filed with the Securities and Exchange Commission on the date hereof (the Report), I, Thomas R. Shoaf, Executive Vice President and Chief Financial Officer of NuStar GP, LLC, the general partner of the general partner of the Partnership, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Partnership.

/s/ Thomas R. Shoaf

Thomas R. Shoaf

Executive Vice President and Chief Financial Officer

August 8, 2017

XML

DEI Document - shares	6 Months Ended
	Jun. 30, 2017	Jul. 31, 2017
Document Information [Abstract]
Entity Registrant Name	NuStar Energy L.P.
Entity Central Index Key	0001110805
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Trading Symbol	ns
Amendment Flag	false
Entity Partnership Units Outstanding		93,031,036

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 29,191	$ 35,942
Accounts receivable, net of allowance for doubtful accounts of $7,768 and $7,756 as of June 30, 2017 and December 31, 2016, respectively	147,548	170,293
Receivable from related party	86	317
Inventories	25,772	37,945
Other current assets	28,265	132,686
Total current assets	230,862	377,183
Property, plant and equipment, at cost	5,974,427	5,435,278
Accumulated depreciation and amortization	(1,827,094)	(1,712,995)
Property, plant and equipment, net	4,147,333	3,722,283
Intangible assets, net	857,616	127,083
Goodwill	1,023,359	696,637
Deferred income tax asset	1,359	2,051
Other long-term assets, net	98,795	105,308
Total assets	6,359,324	5,030,545
Current liabilities:
Accounts payable	92,668	118,686
Short-term debt	45,000	54,000
Current portion of long-term debt	403,075	0
Accrued interest payable	40,232	34,030
Accrued liabilities	55,986	60,485
Taxes other than income tax	16,709	15,685
Income tax payable	847	6,510
Total current liabilities	654,517	289,396
Long-term debt	3,073,864	3,014,364
Deferred income tax liability	22,863	22,204
Other long-term liabilities	107,031	92,964
Commitments and contingencies (Note 5)
Partners' equity:
Common limited partners (93,030,988 and 78,616,228 common units outstanding as of June 30, 2017 and December 31, 2016, respectively)	1,958,435	1,455,642
General partner	41,944	31,752
Accumulated other comprehensive loss	(89,283)	(94,177)
Total partners’ equity	2,501,049	1,611,617
Total liabilities and partners' equity	6,359,324	5,030,545
Series A Preferred Limited Partner [Member]
Partners' equity:
Preferred limited partners	218,340	218,400
Series B Preferred Limited Partner [Member]
Partners' equity:
Preferred limited partners	$ 371,613	$ 0

XML

CONSOLIDATED BALANCE SHEETS Non-Printing - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Allowance for doubtful accounts	$ 7,768	$ 7,756
Series A Preferred Units outstanding (in units)	9,060,000	9,060,000
Series B Preferred Units outstanding (in units)	15,400,000	0
Limited partners common units outstanding (in units)	93,030,988	78,616,228

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Service revenues	$ 283,700	$ 270,403	$ 550,162	$ 536,969
Product sales	151,788	167,401	372,756	306,538
Total revenues	435,488	437,804	922,918	843,507
Costs and expenses:
Cost of product sales	144,479	157,617	352,285	286,607
Operating expenses:
Third parties	116,400	112,662	217,426	196,202
Related party	0	0	0	21,681
Total operating expenses	116,400	112,662	217,426	217,883
General and administrative expenses:
Third parties	33,604	22,657	58,199	35,949
Related party	0	0	0	10,493
Total general and administrative expenses	33,604	22,657	58,199	46,442
Depreciation and amortization expense	67,601	53,651	124,465	106,793
Total costs and expenses	362,084	346,587	752,375	657,725
Operating income	73,404	91,217	170,543	185,782
Interest expense, net	(45,612)	(34,229)	(82,026)	(68,352)
Other income (expense), net	88	(201)	228	(372)
Income before income tax expense	27,880	56,787	88,745	117,058
Income tax expense	1,630	4,270	4,555	7,140
Net income	$ 26,250	$ 52,517	$ 84,190	$ 109,918
Basic net income per common unit (Note 11)	$ 0.05	$ 0.52	$ 0.51	$ 1.09
Diluted net income per common unit (Note 11)	$ 0.05	$ 0.52	$ 0.51	$ 1.09
Basic weighted-average common units outstanding	90,345,469	77,886,219	84,526,506	77,886,148
Diluted weighted-average common units outstanding	90,345,469	77,939,279	84,526,506	77,943,702
Comprehensive income	$ 27,381	$ 29,178	$ 89,084	$ 71,801

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows from Operating Activities:
Net income	$ 84,190	$ 109,918
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	124,465	106,793
Unit-based compensation expense	5,117	2,869
Amortization of debt related items	3,146	3,965
Gain from sale or disposition of assets	(36)	(2)
Deferred income tax expense	23	2,562
Changes in current assets and current liabilities (Note 12)	(15,344)	(15,274)
Other, net	7,427	4,202
Net cash provided by operating activities	208,988	215,033
Cash Flows from Investing Activities:
Capital expenditures	(108,849)	(95,361)
Change in accounts payable related to capital expenditures	6,851	(12,674)
Proceeds from sale or disposition of assets	1,966	0
Proceeds from Axeon term loan	110,000	0
Acquisitions	(1,476,719)	0
Net cash provided by (used in) investing activities	(1,466,751)	(108,035)
Cash Flows from Financing Activities:
Proceeds from long-term debt borrowings	1,037,161	348,904
Proceeds from short-term debt borrowings	565,000	279,000
Proceeds from note offering, net of issuance costs	543,313	0
Long-term debt repayments	(1,122,239)	(184,192)
Short-term debt repayments	(574,000)	(363,000)
Proceeds from issuance of preferred units, net of issuance costs	371,802	0
Proceeds from issuance of common units, net of issuance costs	643,858	0
Contributions from general partner	13,597	0
Distributions to preferred unitholders	(10,696)	0
Distributions to common unitholders and general partner	(216,139)	(196,102)
Increase (decrease) in cash book overdrafts	1,321	(11,166)
Other, net	(2,615)	(674)
Net cash provided by (used in) financing activities	1,250,363	(127,230)
Effect of foreign exchange rate changes on cash	649	4,389
Net increase (decrease) in cash and cash equivalents	(6,751)	(15,843)
Cash and cash equivalents as of the beginning of the period	35,942	118,862
Cash and cash equivalents as of the end of the period	$ 29,191	$ 103,019

XML

ORGANIZATION AND BASIS OF PRESENTATION

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

ORGANIZATION AND BASIS OF PRESENTATION

ORGANIZATION AND BASIS OF PRESENTATION

Organization and Operations

NuStar Energy L.P. (NYSE: NS) is a publicly held Delaware limited partnership engaged in the transportation of petroleum products and anhydrous ammonia, and the terminalling, storage and marketing of petroleum products. Unless otherwise indicated, the terms “NuStar Energy,” “NS,” “the Partnership,” “we,” “our” and “us” are used in this report to refer to NuStar Energy L.P., to one or more of our consolidated subsidiaries or to all of them taken as a whole. NuStar GP Holdings, LLC (NuStar GP Holdings or NSH) (NYSE: NSH) owns our general partner, Riverwalk Logistics, L.P., and owns an approximate 11% common limited partner interest in us as of June 30, 2017.

We conduct our operations through our subsidiaries, primarily NuStar Logistics, L.P. (NuStar Logistics) and NuStar Pipeline Operating Partnership L.P. (NuPOP). We have three business segments: pipeline, storage and fuels marketing.

Recent Developments

Navigator Acquisition and Financing Transactions. On May 4, 2017, we completed the acquisition of Navigator Energy Services, LLC for approximately $1.5 billion (the Navigator Acquisition), subject to customary adjustments at and following closing. In order to fund the purchase price, we issued 14,375,000 common units for net proceeds of $657.5 million, issued $550.0 million of 5.625% senior notes for net proceeds of $543.3 million and issued 15,400,000 of our 7.625% Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units (Series B Preferred Units) for net proceeds of $371.8 million. Please refer to Notes 3, 4 and 10 for further discussion.

Axeon Term Loan. On February 22, 2017, we settled and terminated the $190.0 million term loan to Axeon Specialty Products, LLC (the Axeon Term Loan), pursuant to which we also provided credit support, such as guarantees, letters of credit and cash collateral, as applicable, of up to $125.0 million to Axeon Specialty Products, LLC (Axeon). We received $110.0 million in settlement of the Axeon Term Loan, and our obligation to provide ongoing credit support to Axeon ceased. Please refer to Note 6 for further discussion of the Axeon Term Loan and credit support.

Basis of Presentation

These unaudited condensed consolidated financial statements include the accounts of the Partnership and subsidiaries in which the Partnership has a controlling interest. Inter-partnership balances and transactions have been eliminated in consolidation.

These unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information and with the instructions to the Quarterly Report on Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, they do not include all of the information and notes required by GAAP for complete consolidated financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation have been included, and all disclosures are adequate. All such adjustments are of a normal recurring nature unless disclosed otherwise. Financial information for the three and six months ended June 30, 2017 and 2016 included in these Condensed Notes to Consolidated Financial Statements is derived from our unaudited condensed consolidated financial statements. Operating results for the three and six months ended June 30, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017. The consolidated balance sheet as of December 31, 2016 has been derived from the audited consolidated financial statements as of that date. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2016.

XML

NEW ACCOUNTING PRONOUNCEMENTS

6 Months Ended

Jun. 30, 2017

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

NEW ACCOUNTING PRONOUNCEMENTS

NEW ACCOUNTING PRONOUNCEMENTS

Unit-Based Payments

In May 2017, the Financial Accounting Standards Board (FASB) issued amended guidance that clarifies when a change to the terms and conditions of a unit-based payment award is accounted for as a modification. Under the amended guidance, an entity will apply modification accounting if the value, vesting or classification of the unit-based payment award changes. The guidance is effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied prospectively. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures.

Defined Benefit Plans

In March 2017, the FASB issued amended guidance that changes the presentation of net periodic pension cost related to defined benefit plans. Under the amended guidance, the service cost component of net periodic benefit cost will be presented in the same income statement line items as other current employee compensation costs, but the remaining components of net periodic benefit cost will be presented outside of operating income. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied retrospectively. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures.

Goodwill

In January 2017, the FASB issued amended guidance that simplifies the accounting for goodwill impairment by eliminating step 2 of the goodwill impairment test. Under the amended guidance, goodwill impairment will be measured as the excess of the reporting unit’s carrying value over its fair value, not to exceed the carrying amount of goodwill for that reporting unit. The changes are effective for annual and interim periods beginning after December 15, 2019, and amendments should be applied prospectively. Early adoption is permitted for any impairment tests performed after January 1, 2017, and we are currently evaluating whether we will adopt these provisions early. Regardless of our decision, we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures.

Definition of a Business

In January 2017, the FASB issued amended guidance that clarifies the definition of a business used in evaluating whether a set of transferred assets and activities constitutes a business. Under the amended guidance, if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, the set of transferred assets and activities would not represent a business. To be considered a business, the set of assets transferred is also required to include at least one substantive process that together significantly contribute to the ability to create outputs. In addition, the amended guidance narrows the definition of outputs to be consistent with how outputs are described in the new revenue recognition standard. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied prospectively. We are currently evaluating whether we will early adopt these provisions. We do not expect the guidance to have a material impact on our financial position, results of operations or disclosures.

Statement of Cash Flows

In August 2016, the FASB issued amended guidance that clarifies how entities should present certain cash receipts and cash payments on the statement of cash flows, including but not limited to debt prepayment or debt extinguishment costs, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims and distributions received from equity method investees. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied retrospectively. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our statements of cash flows or disclosures.

Credit Losses

In June 2016, the FASB issued amended guidance that requires the use of a “current expected loss” model for financial assets measured at amortized cost and certain off-balance sheet credit exposures. Under this model, entities will be required to estimate the lifetime expected credit losses on such instruments based on historical experience, current conditions, and reasonable and supportable forecasts. This amended guidance also expands the disclosure requirements to enable users of financial statements to understand an entity’s assumptions, models and methods for estimating expected credit losses. The changes are effective for annual and interim periods beginning after December 15, 2019, and amendments should be applied using a modified retrospective approach. We currently expect to adopt the amended guidance on January 1, 2020 and are assessing the impact of this amended guidance on our financial position, results of operations and disclosures. We plan to provide additional information about the expected financial impact at a future date.

Leases

In February 2016, the FASB issued amended guidance that requires lessees to recognize the assets and liabilities that arise from most leases on the balance sheet. For lessors, this amended guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. The changes are effective for annual and interim periods beginning after December 15,

2018, and amendments should be applied using a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements, with the option to use certain expedients. We currently expect to adopt these provisions on January 1, 2019. We have initiated a project to assess the impact of this amended guidance on our financial position, results of operations, disclosures and internal controls and plan to provide additional information about the expected financial impact at a future date.

Financial Instruments

In January 2016, the FASB issued new guidance that addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures.

Revenue Recognition

In May 2014, the FASB and the International Accounting Standards Board jointly issued a comprehensive new revenue recognition standard. In August 2015, the FASB deferred the effective date by one year. The standard is now effective for public entities for annual and interim periods beginning after December 15, 2017, using one of two retrospective transition methods. Early adoption is permitted, but not before the original effective date. The FASB has subsequently issued several updates that amend and/or clarify the new revenue recognition standard. We expect to complete implementation of the new revenue recognition standard by the end of 2017. Based on our analysis completed to date, we do not believe the standard will significantly impact the amount or timing of revenues recognized under the vast majority of our revenue contracts. We currently expect to adopt the new guidance using the modified retrospective approach, under which the cumulative effect of initially applying the new guidance is recognized as an adjustment to the opening balance of retained earnings, in the first quarter of 2018. We are continuing to evaluate the impact of this new guidance on our financial position, results of operations and disclosures, including customer contracts associated with our recently closed Navigator Acquisition.

XML

ACQUISITIONS

6 Months Ended

Jun. 30, 2017

Business Combinations [Abstract]

ACQUISITIONS

ACQUISITIONS

Navigator Acquisition

On April 11, 2017, we entered into a Membership Interest Purchase and Sale Agreement (the Acquisition Agreement) with FR Navigator Holdings LLC to acquire all of the issued and outstanding limited liability company interests in Navigator Energy Services, LLC (Navigator) for approximately $1.5 billion, subject to customary adjustments at and following closing. We closed on the Navigator Acquisition on May 4, 2017 and funded the purchase price with the net proceeds of the equity and debt issuances described in Notes 4 and 10. We acquired crude oil transportation, pipeline gathering and storage assets located in the Midland Basin of West Texas consisting of: (i) more than 500 miles of crude oil gathering and transportation pipelines with approximately 92,000 barrels per day ship-or-pay volume commitments and deliverability of approximately 412,000 barrels per day; (ii) a pipeline gathering system with more than 200 connected producer tank batteries capable of more than 400,000 barrels per day of pumping capacity covering over 500,000 dedicated acres with fixed fee contracts; and (iii) approximately 1.0 million barrels of crude oil storage capacity with 440,000 barrels contracted to third parties. We collectively refer to the acquired assets as our Permian Crude System. The assets acquired are included in our pipeline segment.

The Navigator Acquisition broadens our geographic footprint by marking our entry into the Permian Basin and complements our existing asset base. We believe the Permian Crude System will provide a strong growth platform that, when coupled with our assets in the Eagle Ford region, serve to solidify our presence in two of the most prolific basins in the United States.

We accounted for the Navigator Acquisition using the acquisition method. The estimates of fair value of the assets acquired and liabilities assumed are based on preliminary assumptions, pending the completion of an independent appraisal and other evaluations as information becomes available to us. The following table reflects the preliminary purchase price allocation:

	Preliminary Purchase Price Allocation
	(Thousands of Dollars)
Accounts receivable	$	4,916
Other current assets	2,476
Property, plant and equipment, net	396,603
Intangible assets (a)	750,000
Goodwill (b)	326,722
Other long-term assets, net	2,125
Current liabilities	(26,971		)
Preliminary purchase price allocation, net of cash acquired	1,455,871
Pending closing adjustment	20,848
Cash disbursed at closing	$	1,476,719

(a) Intangible assets, which consist of customer contracts and relationships, are expected to be amortized over a weighted average period of 20 years.

(b) The goodwill acquired represents the expected benefit from entering new geographic areas and the anticipated opportunities to generate future cash flows from the assets acquired and potential future projects.

The values used in the purchase price allocation above and estimated useful lives are preliminary and subject to change after we finalize our review of the specific types, nature and condition of Navigator’s property, plant and equipment and intangible assets and pending the completion of an independent appraisal. A change in the value used for property, plant and equipment or intangible assets may be significant and would cause a corresponding increase or decrease in goodwill.

The condensed statements of income include the results of operations for the Navigator commencing on May 4, 2017. For the three months ended June 30, 2017, we recognized $9.5 million in revenues and an operating loss of $3.4 million related to the Navigator Acquisition. Additionally, we incurred transaction costs of $10.2 million included in “General and administrative expenses” and $3.7 million included in “Interest expense, net” on the condensed consolidated statements of comprehensive income for the three months ended June 30, 2017.

The unaudited pro forma information for the three and six months ended June 30, 2017 and 2016 presented below combines the historical financial information for Navigator and the Partnership for those periods. The information assumes we completed the Navigator Acquisition on January 1, 2016 and the following:

• we issued approximately 14.4 million common units;

• we received a contribution from our general partner of $13.6 million to maintain its 2% interest;

• we issued 15.4 million Series B Preferred Units;

• we issued $550.0 million of 5.625% senior notes;

• additional depreciation and amortization that would have been incurred assuming the fair value adjustments to property, plant and equipment and intangible assets reflected in the preliminary purchase price allocation above have been applied; and

• we satisfied Navigator’s outstanding obligations under its revolving credit agreement.

	Three Months Ended June 30,					Six Months Ended June 30,
	2017			2016		2017		2016
	(Thousands of Dollars, Except Per Unit Data)
Revenues	$	439,933		$	443,314	$	937,317	$	852,169
Net income	$	21,211		$	33,378	$	63,659	$	70,118
Basic and diluted net (loss) income per common unit	$	(0.03	)	$	0.15	$	0.16	$	0.34

The pro forma information for the three and six months ended June 30, 2017 includes transaction costs of approximately $14.0 million, which were directly attributable to the Navigator Acquisition. The pro forma information is unaudited and is not necessarily indicative of the results of operations that actually would have resulted had the Navigator Acquisition occurred on January 1, 2016 or that may result in the future.

XML

DEBT

6 Months Ended

Jun. 30, 2017

Debt Disclosure [Abstract]

DEBT

DEBT

Issuance of 5.625% Senior Notes

OnApril 28, 2017, NuStar Logistics issued$550.0 millionof5.625%senior notes dueApril 28, 2027. We used the net proceeds of$543.3 millionfrom the offering to fund a portion of the purchase price for the Navigator Acquisition and to pay related fees and expenses. The interest on the 5.625% senior notes is payable semi-annually in arrears on April 28 and October 28 of each year beginning on October 28, 2017. The 5.625% senior notes do not have sinking fund requirements. These notes rank equally with existing senior unsecured indebtedness and senior to existing subordinated indebtedness of NuStar Logistics. The 5.625% senior notes contain restrictions on NuStar Logistics’ ability to incur secured indebtedness unless the same security is also provided for the benefit of holders of the senior notes. In addition, the senior notes limit NuStar Logistics’ ability to incur indebtedness secured by certain liens, engage in certain sale-leaseback transactions and engage in certain consolidations, mergers or asset sales. The5.625%senior notes are fully and unconditionally guaranteed by NuStar Energy and NuPOP.

At the option of NuStar Logistics, the 5.625% senior notes may be redeemed in whole or in part at any time at a redemption price, plus accrued and unpaid interest to the redemption date. If we undergo a change of control, followed by a ratings decline within 60 days of a change of control, each holder of the notes may require us to repurchase all or a portion of its notes at a price equal to 101% of the principal amount of the notes, plus any accrued and unpaid interest to the date of repurchase.

Revolving Credit Agreement

During the six months ended June 30, 2017, the balance under our $1.5 billionfive-year revolving credit agreement (the Revolving Credit Agreement) decreased by $74.2 million. The Revolving Credit Agreement matures on October 29, 2019 and bears interest, at our option, based on an alternative base rate, a LIBOR-based rate or a EURIBOR-based rate. The interest rate on the Revolving Credit Agreement is subject to adjustment if our debt rating is downgraded (or upgraded) by certain credit rating agencies. As of June 30, 2017, our weighted-average interest rate related to borrowings under the Revolving Credit Agreement was 2.8%, and we had $764.8 million outstanding.

As of June 30, 2017, our consolidated debt coverage ratio (as defined in the Revolving Credit Agreement) could not exceed 5.50-to-1.00 as a result of the Navigator Acquisition. The requirement not to exceed a maximum consolidated debt coverage ratio may limit the amount we can borrow under the Revolving Credit Agreement to an amount less than the total amount available for borrowing. As of June 30, 2017, letters of credit issued under the Revolving Credit Agreement totaled $7.7 million, and we had $727.5 million available for borrowing. We believe that we are in compliance with the covenants in the Revolving Credit Agreement as of June 30, 2017.

Gulf Opportunity Zone Revenue Bonds

In 2008, 2010 and 2011, the Parish of St. James, Louisiana issued, pursuant to the Gulf Opportunity Zone Act of 2005, an aggregate $365.4 million of tax-exempt revenue bonds (the GoZone Bonds) associated with our St. James, Louisiana terminal expansions. The GoZone Bonds bear interest based on a weekly tax-exempt bond market interest rate, and interest is paid monthly. The weighted-average interest rate was 0.9% as of June 30, 2017. Following the issuances, the proceeds were deposited with a trustee and are disbursed to us upon our request for reimbursement of expenditures related to our St. James terminal expansions. We include the amount remaining in trust in “Other long-term assets, net,” and we include the amount of bonds issued in “Long-term debt” on the consolidated balance sheets. For the six months ended June 30, 2017, we did not receive any proceeds from the trustee, and as of June 30, 2017, the amount remaining in trust totaled $42.4 million.

Receivables Financing Agreement

NuStar Energy and NuStar Finance LLC (NuStar Finance), a special purpose entity and wholly owned subsidiary of NuStar Energy, are parties to a $125.0 million receivables financing agreement with third-party lenders (the Receivables Financing Agreement) and agreements with certain of NuStar Energy’s wholly owned subsidiaries (collectively with the Receivables Financing Agreement, the Securitization Program). NuStar Finance’s sole business consists of purchasing receivables from certain of NuStar Energy’s wholly owned subsidiaries and providing these receivables as collateral under the Securitization Program. NuStar Finance is a separate legal entity and the assets of NuStar Finance, including these accounts receivable, are not available to satisfy the claims of creditors of NuStar Energy, its subsidiaries selling receivables under the Securitization Program or their affiliates. The amount available for borrowing is based on the availability of eligible receivables and other customary factors and conditions.

Borrowings by NuStar Finance under the Receivables Financing Agreement bear interest at either the applicable commercial paper rate or the applicable bank rate, each as defined under the Receivables Financing Agreement. The Securitization Program has an initial termination date of June 15, 2018, with the option to renew for additional 364-day periods thereafter. As of June 30, 2017, $81.7 million of our accounts receivable are included in the Securitization Program. The amount of borrowings outstanding under the Receivables Financing Agreement totaled $53.3 million as of June 30, 2017, which is included in “Current portion of long-term debt” on the consolidated balance sheet.

XML

COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

We have contingent liabilities resulting from various litigation, claims and commitments. We record accruals for loss contingencies when losses are considered probable and can be reasonably estimated. Legal fees associated with defending the Partnership in legal matters are expensed as incurred. We had an accrual of $1.7 million for contingent losses as of June 30, 2017 and none as of December 31, 2016. The amount that will ultimately be paid may differ from the recorded accruals, and the timing of such payments is uncertain. In addition, due to the inherent uncertainty of litigation, there can be no assurance that the resolution of any particular claim or proceeding would not have a material adverse effect on our results of operations, financial position or liquidity.

XML

FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

We segregate the inputs used in measuring fair value into three levels: Level 1, defined as observable inputs, such as quoted prices for identical assets or liabilities in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable, such as quoted prices for similar assets or liabilities in active markets or quoted prices for identical assets or liabilities in markets that are not active; and Level 3, defined as unobservable inputs for which little or no market data exists. We consider counterparty credit risk and our own credit risk in the determination of all estimated fair values.

Recurring Fair Value Measurements

The following assets and liabilities are measured at fair value on a recurring basis:

	June 30, 2017
	Level 1			Level 2			Level 3		Total
	(Thousands of Dollars)
Assets:
Other current assets:
Product imbalances	$	5,249		$	—		$	—	$	5,249
Total	$	5,249		$	—		$	—	$	5,249
Liabilities:
Accrued liabilities:
Product imbalances	$	(3,031	)	$	—		$	—	$	(3,031	)
Commodity derivatives	(451		)	—			—		(451		)
Interest rate swaps	—			(6,392		)	—		(6,392		)
Other long-term liabilities:
Interest rate swaps	—			(2,867		)	—		(2,867		)
Total	$	(3,482	)	$	(9,259	)	$	—	$	(12,741	)

	December 31, 2016
	Level 1			Level 2			Level 3			Total
	(Thousands of Dollars)
Assets:
Other current assets:
Product imbalances	$	1,551		$	—		$	—		$	1,551
Commodity derivatives	—			155			—			155
Other long-term assets, net:
Interest rate swaps	—			1,314			—			1,314
Total	$	1,551		$	1,469		$	—		$	3,020
Liabilities:
Accrued liabilities:
Product imbalances	$	(1,577	)	$	—		$	—		$	(1,577	)
Commodity derivatives	(4,887		)	(165		)	—			(5,052		)
Other long-term liabilities:
Guarantee liability	—			—			(1,230		)	(1,230		)
Interest rate swaps	—			(2,632		)	—			(2,632		)
Total	$	(6,464	)	$	(2,797	)	$	(1,230	)	$	(10,491	)

Product Imbalances.Since we value our assets and liabilities related to product imbalances using quoted market prices in active markets as of the reporting date, we include these product imbalances in Level 1 of the fair value hierarchy.

Commodity Derivatives.We base the fair value of certain of our commodity derivative instruments on quoted prices on an exchange; accordingly, we include these items in Level 1 of the fair value hierarchy. We also have derivative instruments for which we determine fair value using industry pricing services and other observable inputs, such as quoted prices on an exchange for similar derivative instruments, and we include these derivative instruments in Level 2 of the fair value hierarchy. See Note 7 for a discussion of our derivative instruments.

Interest Rate Swaps.Becausewe estimate the fair value of our forward-starting interest rate swaps using discounted cash flows, which use observable inputs such as time to maturity and market interest rates, we include these interest rate swaps in Level 2 of the fair value hierarchy.

Guarantees. In 2014, we sold our remaining 50% ownership interest in Axeon and agreed to provide them with credit support, such as guarantees, letters of credit and cash collateral, as applicable, of up to $125.0 million. As of December 31, 2016, we provided guarantees totaling $54.1 million, and one guarantee that did not specify a maximum amount. Our estimate of the fair value was based on significant inputs not observable in the market and thus fell within Level 3 of the fair value hierarchy. In conjunction with the termination of the Axeon Term Loan discussed in the following section, our obligation to provide credit support to Axeon ceased.

Fair Value of Financial Instruments

We recognize cash equivalents, receivables, payables and debt in our consolidated balance sheets at their carrying amounts. The fair values of these financial instruments, except for long-term debt, approximate their carrying amounts.

The estimated fair values and carrying amounts of long-term debt, including the current portion, and the Axeon Term Loan were as follows:

	June 30, 2017		December 31, 2016
	Long-term Debt		Long-term Debt		Axeon Term Loan
	(Thousands of Dollars)
Fair value	$	3,591,708	$	3,084,762	$	110,000
Carrying amount	$	3,476,939	$	3,014,364	$	110,000

Long-term Debt. We estimated the fair value of our publicly traded senior notes based upon quoted prices in active markets; therefore, we determined that the fair value of our publicly traded senior notes falls in Level 1 of the fair value hierarchy. For our other debt, for which a quoted market price is not available, we estimated the fair value using a discounted cash flow analysis using current incremental borrowing rates for similar types of borrowing arrangements and determined that the fair value falls in Level 2 of the fair value hierarchy.

Axeon Term Loan. In December 2016, Lindsay Goldberg LLC, the private investment firm that owned Axeon, informed us that they entered into an agreement to sell Axeon’s retail asphalt sales and distribution business (the Axeon Sale), and we entered into an agreement with Axeon (the Axeon Letter Agreement) to settle and terminate the Axeon Term Loan for $110.0 million upon closing of the Axeon Sale. Therefore, we reduced the carrying amount of the Axeon Term Loan to $110.0 million and reclassified the Axeon Term Loan from “Other long-term assets, net” to “Other current assets” on the consolidated balance sheet as of December 31, 2016. The Axeon Sale closed on February 22, 2017, at which time we received the $110.0 million payment in accordance with the Axeon Letter Agreement. Furthermore, the Axeon Term Loan and our obligation to provide ongoing credit support to Axeon all terminated concurrently on February 22, 2017.

XML

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES

6 Months Ended

Jun. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES

We utilize various derivative instruments to manage our exposure to interest rate risk and commodity price risk. Our risk management policies and procedures are designed to monitor interest rates, futures and swap positions and over-the-counter positions, as well as physical commodity volumes, grades, locations and delivery schedules, to help ensure that our hedging activities address our market risks.

Interest Rate Risk

We are a party to certain interest rate swap agreements to manage our exposure to changes in interest rates, which include forward-starting interest rate swap agreements related to forecasted debt issuances in 2018 and 2020. We entered into these swaps in order to hedge the risk of changes in the interest payments attributable to changes in the benchmark interest rate during the period from the effective date of the swap to the issuance of the forecasted debt. Under the terms of the swaps, we pay a fixed rate and receive a rate based on the three-month USD LIBOR. These swaps qualify as cash flow hedges, and we designate them as such. We record the effective portion of mark-to-market adjustments as a component of “Accumulated other comprehensive income (loss)” (AOCI), and the amount in AOCI will be recognized in “Interest expense, net” as the forecasted interest payments occur or if the interest payments are probable not to occur. As of June 30, 2017 and December 31, 2016, the aggregate notional amount of forward-starting interest rate swaps totaled $600.0 million.

Commodity Price Risk

We are exposed to market risks related to the volatility of crude oil and refined product prices. In order to reduce the risk of commodity price fluctuations with respect to our crude oil and refined product inventories and related firm commitments to purchase and/or sell such inventories, we utilize commodity futures and swap contracts, which qualify, and we designate, as fair value hedges. Derivatives that are intended to hedge our commodity price risk, but fail to qualify as fair value or cash flow hedges, are considered economic hedges, and we record associated gains and losses in net income. Our risk management committee oversees our trading controls and procedures and certain aspects of commodity and trading risk management. Our risk management committee also reviews all new commodity and trading risk management strategies in accordance with our risk management policy, as approved by our board of directors.

The volume of commodity contracts is based on open derivative positions and represents the combined volume of our long and short open positions on an absolute basis, which totaled 2.3 million barrels and 4.7 million barrels as of June 30, 2017 and December 31, 2016, respectively. We had $0.3 million and $1.8 million of margin deposits as of June 30, 2017 and December 31, 2016, respectively.

The fair values of our derivative instruments included in our consolidated balance sheets were as follows:

		Asset Derivatives				Liability Derivatives
	Balance Sheet Location	June 30, 2017		December 31, 2016		June 30, 2017			December 31, 2016
		(Thousands of Dollars)
Derivatives Designated as Hedging Instruments:
Interest rate swaps	Other long-term assets, net	$	—	$	1,314	$	—		$	—
Commodity contracts	Accrued liabilities	162		144		(188		)	(3,566		)
Interest rate swaps	Accrued liabilities	—		—		(6,392		)	—
Interest rate swaps	Other long-term liabilities	—		—		(2,867		)	(2,632		)
Total		162		1,458		(9,447		)	(6,198		)
Derivatives Not Designated as Hedging Instruments:
Commodity contracts	Other current assets	—		265		—			(110		)
Commodity contracts	Accrued liabilities	1,387		9,128		(1,812		)	(10,758		)
Total		1,387		9,393		(1,812		)	(10,868		)
Total Derivatives		$	1,549	$	10,851	$	(11,259	)	$	(17,066	)

Certain of our derivative instruments are eligible for offset in the consolidated balance sheets and subject to master netting arrangements. Under our master netting arrangements, there is a legally enforceable right to offset amounts, and we intend to settle such amounts on a net basis. The following are the net amounts presented on the consolidated balance sheets:

Commodity Contracts	June 30, 2017			December 31, 2016
	(Thousands of Dollars)
Net amounts of assets presented in the consolidated balance sheets	$	—		$	155
Net amounts of liabilities presented in the consolidated balance sheets	$	(451	)	$	(5,052	)

We recognize the impact of our commodity contracts on earnings in “Cost of product sales” on the condensed consolidated statements of comprehensive income, and that impact was as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars)
Derivatives Designated as Fair Value Hedging Instruments:
Gain (loss) recognized in income on derivative	$	364		$	(5,792	)	$	2,461		$	(6,804	)
(Loss) gain recognized in income on hedged item	(313		)	6,938			(2,147		)	9,804
Gain recognized in income for ineffective portion	51			1,146			314			3,000
Derivatives Not Designated as Hedging Instruments:
Gain (loss) recognized in income on derivative	$	52		$	(724	)	$	(86	)	$	(4	)

Our interest rate swaps had the following impact on earnings:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars)
Derivatives Designated as Cash Flow Hedging Instruments:
Loss recognized in other comprehensive income on derivative (effective portion)	$	(7,980	)	$	(20,200	)	$	(7,941	)	$	(50,178	)
Loss reclassified from AOCI into interest expense, net (effective portion)	$	(1,729	)	$	(2,158	)	$	(3,528	)	$	(4,380	)

As of June 30, 2017, we expect to reclassify a loss of $5.8 million to “Interest expense, net” within the next twelve months associated with unwound forward-starting interest rate swaps.

XML

RELATED PARTY TRANSACTIONS

6 Months Ended

Jun. 30, 2017

Related Party Transactions [Abstract]

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS

Employee Transfer from NuStar GP, LLC. On March 1, 2016, NuStar GP, LLC, the general partner of our general partner and a wholly owned subsidiary of NuStar GP Holdings, transferred and assigned to NuStar Services Company LLC (NuStar Services Co), a wholly owned subsidiary of NuStar Energy, all of NuStar GP, LLC’s employees and related benefit plans, programs, contracts and policies (the Employee Transfer). As a result of the Employee Transfer, we pay employee costs directly and sponsor the long-term incentive plan and other employee benefit plans. Please refer to Note 9 for a discussion of our employee benefit plans.

GP Services Agreement. Prior to the Employee Transfer, our operations were managed by NuStar GP, LLC under a services agreement effective January 1, 2008, pursuant to which employees of NuStar GP, LLC performed services for our U.S. operations. Employees of NuStar GP, LLC provided services to us and NuStar GP Holdings; therefore, we reimbursed NuStar GP, LLC for all employee costs incurred prior to the Employee Transfer, other than the expenses allocated to NuStar GP Holdings. For the six months ended June 30, 2016, we reimbursed NuStar GP, LLC $21.7 million and $10.5 million for operating expenses and general and administrative expenses, respectively.

In conjunction with the Employee Transfer, we entered into an Amended and Restated Services Agreement with NuStar GP, LLC, effective March 1, 2016 (the Amended GP Services Agreement). The Amended GP Services Agreement provides that we will furnish administrative services necessary to conduct the business of NuStar GP Holdings. NuStar GP Holdings will compensate us for these services through an annual fee of $1.0 million, subject to adjustment based on the annual merit increase percentage applicable to our employees for the most recently completed fiscal year and for changes in level of service. The Amended GP Services Agreement will terminate on March 1, 2020 and will automatically renew for successive two-year terms, unless terminated by either party.

XML

EMPLOYEE BENEFIT PLANS

6 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS

Effective March 1, 2016, in connection with the Employee Transfer, we assumed sponsorship and responsibility for the defined benefit plans and defined contribution plans described below. Prior to the Employee Transfer, NuStar GP, LLC sponsored and maintained these employee benefit plans and we reimbursed all costs incurred by NuStar GP, LLC related to these employee benefit plans at cost.

The NuStar Pension Plan (the Pension Plan) is a qualified non-contributory defined benefit pension plan that provides eligible U.S. employees with retirement income as calculated under a cash balance formula. The NuStar Excess Pension Plan (the Excess Pension Plan) is a nonqualified deferred compensation plan that provides benefits to a select group of management or other highly compensated employees. The Pension Plan and Excess Pension Plan are collectively referred to as the Pension Plans.

We also sponsor a contributory medical benefits plan for U.S. employees that retired prior to April 1, 2014. For employees that retire on or after April 1, 2014, we provide partial reimbursement for eligible third-party health care premiums.

The following table summarizes the components of net periodic benefit costs for the Pension Plans and other postretirement benefits on a combined basis for periods prior to the Employee Transfer and after the Employee Transfer:

	Pension Plans						Other Postretirement Benefits
	2017			2016			2017			2016
	(Thousands of Dollars)
For the three months ended June 30:
Service cost	$	2,239		$	1,926		$	113		$	105
Interest cost	1,127			1,006			108			100
Expected return on assets	(1,602		)	(1,351		)	—			—
Amortization of prior service credit	(516		)	(516		)	(286		)	(286		)
Amortization of net loss	371			273			48			45
Net periodic benefit cost (income)	$	1,619		$	1,338		$	(17	)	$	(36	)
For the six months ended June 30:
Service cost	$	4,478		$	3,852		$	226		$	210
Interest cost	2,254			2,012			216			200
Expected return on assets	(3,205		)	(2,703		)	—			—
Amortization of prior service credit	(1,031		)	(1,033		)	(572		)	(572		)
Amortization of net loss	742			546			96			90
Net periodic benefit cost (income)	$	3,238		$	2,674		$	(34	)	$	(72	)

XML

PARTNERS' EQUITY

6 Months Ended

Jun. 30, 2017

Partners' Capital Notes [Abstract]

PARTNERS' EQUITY

PARTNERS’ EQUITY

Amendment of Partnership Agreement

Our general partner amended and restated our partnership agreement in connection with the issuance of the Series B Preferred Units as described below and the Navigator Acquisition to waive up to an aggregate $22.0 million of the quarterly incentive distributions to our general partner for any NS common units issued from the date of the Acquisition Agreement (other than those attributable to NS common units issued under any equity compensation plan) for ten consecutive quarters, starting with the distributions for the second quarter of 2017.

Issuance of Common Units

On April 18, 2017, we issued 14,375,000 common units representing limited partner interests at a price of $46.35 per unit. We used the net proceeds from this offering of $657.5 million, including a contribution of $13.6 million from our general partner to maintain its 2% general partner interest, to fund a portion of the purchase price for the Navigator Acquisition.

Issuance of Series B Preferred Units

OnApril 28, 2017, we issued 15,400,000 of our Series B Preferred Units representing limited partner interests at a price of $25.00 per unit. We used the net proceeds of $371.8 million from the issuance of the Series B Preferred Units to fund a portion of the purchase price for the Navigator Acquisition and to pay related fees and expenses.

Distributions on the Series B Preferred Units are payable out of any legally available funds, accrue and are cumulative from the date of original issuance of the Series B Preferred Units and are payable on the 15^th day of each of March, June, September and December of each year (beginning on September 15, 2017) to holders of record on the first day of each payment month. The initial distribution rate on the Series B Preferred Units to, but not including, June 15, 2022 is 7.625% per annum of the $25.00 liquidation preference per unit (equal to $1.90625 per unit per annum). On and after June 15, 2022, distributions on the Series B Preferred Units accumulate at a percentage of the $25.00 liquidation preference equal to an annual floating rate of the three-month LIBOR plus a spread of 5.643%. The Series B Preferred Units rank equal to our Series A Preferred Units and senior to our common units with respect to distribution rights and rights upon liquidation.

At any time on or after June 15, 2022, we may redeem our Series B Preferred Units, in whole or in part, at a redemption price of $25.00 per unit plus an amount equal to all accumulated and unpaid distributions to, but not including, the date of redemption, whether or not declared. We may also redeem the Series B Preferred Units upon the occurrence of certain rating events or a change of control as defined in our partnership agreement. In the case of the latter instance, if we choose not to redeem the Series B Preferred Units, the preferred unitholders may have the ability to convert the Series B Preferred Units to common units at the then applicable conversion rate. Holders of the Series B Preferred Units have no voting rights except for certain exceptions set forth in our partnership agreement.

Partners’ Equity Activity

The following table summarizes changes to our partners’ equity (in thousands of dollars):

Balance as of January 1, 2017	$	1,611,617
Net income	84,190
Unit-based compensation expense	2,564
Other comprehensive income	4,894
Distributions to partners	(230,902		)
Issuance of preferred and common units, including contribution from general partner	1,029,257
Other	(571		)
Balance as of June 30, 2017	$	2,501,049

Accumulated Other Comprehensive Income (Loss)

The balance of and changes in the components included in AOCI were as follows:

	Foreign Currency Translation			Cash Flow Hedges			Pension and Other Postretirement Benefits			Total
	(Thousands of Dollars)
Balance as of January 1, 2017	$	(69,069	)	$	(22,258	)	$	(2,850	)	$	(94,177	)
Other comprehensive income (loss):
Other comprehensive income (loss) before    reclassification adjustments	10,072			(7,941		)	—			2,131
Net gain on pension costs reclassified into operating    expense	—			—			(572		)	(572		)
Net gain on pension costs reclassified into general and    administrative expense	—			—			(193		)	(193		)
Net loss on cash flow hedges reclassified into interest    expense, net	—			3,528			—			3,528
Other comprehensive income (loss)	10,072			(4,413		)	(765		)	4,894
Balance as of June 30, 2017	$	(58,997	)	$	(26,671	)	$	(3,615	)	$	(89,283	)

Allocations of Net Income

Our partnership agreement sets forth the calculation to be used to determine the amount and priority of cash distributions that the unitholders and general partner will receive. The partnership agreement also contains provisions for the allocation of net income to the unitholders and the general partner. Our net income for each quarterly reporting period is first allocated to the preferred limited partner unitholders in an amount equal to the earned distributions for the respective reporting period and then to the general partner in an amount equal to the general partner’s incentive distribution calculated based upon the declared distribution for the respective reporting period. We allocate the remaining net income or loss among the common unitholders (98%) and general partner (2%), as set forth in our partnership agreement.

The following table details the calculation of net income applicable to the general partner:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars, Except Percentage Data)
Net income attributable to NuStar Energy L.P.	$	26,250		$	52,517		$	84,190		$	109,918
Less preferred limited partner interest	9,950			—			14,763			—
Less general partner incentive distribution	10,912			10,805			23,824			21,610
Net income after general partner incentive distribution and preferred limited partner interest	5,388			41,712			45,603			88,308
General partner interest allocation	2		%	2		%	2		%	2		%
General partner interest allocation of net income	108			834			912			1,766
General partner incentive distribution	10,912			10,805			23,824			21,610
Net income applicable to general partner	$	11,020		$	11,639		$	24,736		$	23,376

Cash Distributions

General and Common Limited Partners. The following table reflects the allocation of total cash distributions to the general partner and common limited partners applicable to the period in which the distributions were earned:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
	(Thousands of Dollars, Except Per Unit Data)
General partner interest	$	2,302	$	1,961	$	4,645	$	3,922
General partner incentive distribution	10,912		10,805		23,824		21,610
Total general partner distribution	13,214		12,766		28,469		25,532
Common limited partners’ distribution	101,869		85,285		203,782		170,570
Total cash distributions	$	115,083	$	98,051	$	232,251	$	196,102
Cash distributions per unit applicable to common limited partners	$	1.095	$	1.095	$	2.190	$	2.190

The following table summarizes information related to our quarterly cash distributions to our general partner and common limited partners:

Quarter Ended	Cash Distributions Per Unit		Total Cash Distributions		Record Date	Payment Date
			(Thousands of Dollars)
June 30, 2017 (a)	$	1.095	$	115,083	August 7, 2017	August 11, 2017
March 31, 2017	$	1.095	$	117,168	May 8, 2017	May 12, 2017
December 31, 2016	$	1.095	$	98,971	February 8, 2017	February 13, 2017

(a) The distribution was announced on July 28, 2017.

Preferred Units. The following table summarizes information related to our quarterly cash distributions on our Series A and Series B Preferred Units:

Period	Cash Distributions Per Unit		Total Cash Distributions		Record Date	Payment Date
			(Thousands of Dollars)
Series A Preferred Units:
June 15, 2017 - September 14, 2017 (a)	$	0.53125	$	4,813	September 1, 2017	September 15, 2017
March 15, 2017 - June 14, 2017	$	0.53125	$	4,813	June 1, 2017	June 15, 2017
November 25, 2016 - March 14, 2017	$	0.64930556	$	5,883	March 1, 2017	March 15, 2017
Series B Preferred Units:
April 28, 2017 - September 14, 2017 (a)	$	0.725434028	$	11,172	September 1, 2017	September 15, 2017

(a) The distribution was announced on July 28, 2017.

XML

NET INCOME PER COMMON UNIT

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

NET INCOME PER COMMON UNIT

NET INCOME PER COMMON UNIT

Basic and diluted net income per common unit is determined pursuant to the two-class method. Under this method, all earnings are allocated to our common limited partners and participating securities based on their respective rights to receive distributions earned during the period. Participating securities include our general partner interest and restricted units awarded under our long-term incentive plan.

We compute basic net income per common unit by dividing net income attributable to common units by the weighted-average number of common units outstanding during the period. We compute diluted net income per common unit by dividing net income attributable to our common limited partners by the sum of (i) the weighted-average number of common units outstanding during the period and (ii) the effect of dilutive potential common units outstanding during the period. Dilutive potential common units include contingently issuable performance units awarded under our long-term incentive plan.

The following table details the calculation of net income per common unit:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars, Except Unit and Per Unit Data)
Net income attributable to NuStar Energy L.P.	$	26,250		$	52,517		$	84,190		$	109,918
Less: Distributions to general partner (including incentive     distribution rights)	13,214			12,766			28,469			25,532
Less: Distributions to common limited partners	101,869			85,285			203,782			170,570
Less: Distributions to preferred limited partners	9,950			—			14,763			—
Less: Distribution equivalent rights to restricted units	712			657			1,427			1,319
Distributions in excess of earnings	$	(99,495	)	$	(46,191	)	$	(164,251	)	$	(87,503	)
Net income attributable to common units:
Distributions to common limited partners	$	101,869		$	85,285		$	203,782		$	170,570
Allocation of distributions in excess of earnings	(97,505		)	(45,267		)	(160,966		)	(85,752		)
Total	$	4,364		$	40,018		$	42,816		$	84,818
Basic weighted-average common units outstanding	90,345,469			77,886,219			84,526,506			77,886,148
Diluted common units outstanding:
Basic weighted-average common units outstanding	90,345,469			77,886,219			84,526,506			77,886,148
Effect of dilutive potential common units	—			53,060			—			57,554
Diluted weighted-average common units outstanding	90,345,469			77,939,279			84,526,506			77,943,702
Basic and diluted net income per common unit	$	0.05		$	0.52		$	0.51		$	1.09

XML

STATEMENTS OF CASH FLOWS

6 Months Ended

Jun. 30, 2017

Statement of Cash Flows [Abstract]

STATEMENTS OF CASH FLOWS

STATEMENTS OF CASH FLOWS

Changes in current assets and current liabilities were as follows:

	Six Months Ended June 30,
	2017			2016
	(Thousands of Dollars)
Decrease (increase) in current assets:
Accounts receivable	$	48,875		$	(572	)
Receivable from related party	231			—
Inventories	13,005			99
Other current assets	(2,388		)	5,064
Increase (decrease) in current liabilities:
Accounts payable	(57,822		)	(4,717		)
Payable to related party, net	—			697
Accrued interest payable	6,234			(393		)
Accrued liabilities	(14,703		)	(12,321		)
Taxes other than income tax	(3,094		)	(348		)
Income tax payable	(5,682		)	(2,783		)
Changes in current assets and current liabilities	$	(15,344	)	$	(15,274	)

The above changes in current assets and current liabilities differ from changes between amounts reflected in the applicable consolidated balance sheets due to:

• current assets and current liabilities acquired during the period;

• the change in the amount accrued for capital expenditures; and

• the effect of foreign currency translation.

Cash flows related to interest and income taxes were as follows:

	Six Months Ended June 30,
	2017		2016
	(Thousands of Dollars)
Cash paid for interest, net of amount capitalized	$	70,119	$	70,280
Cash paid for income taxes, net of tax refunds received	$	9,556	$	8,826

XML

SEGMENT INFORMATION

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

SEGMENT INFORMATION

SEGMENT INFORMATION

Our reportable business segments consist of pipeline, storage and fuels marketing. Our segments represent strategic business units that offer different services and products. We evaluate the performance of each segment based on its respective operating income, before general and administrative expenses and certain non-segmental depreciation and amortization expense. General and administrative expenses are not allocated to the operating segments since those expenses relate primarily to the overall management at the entity level. Our principal operations include the transportation of petroleum products and anhydrous ammonia, the terminalling and storage of petroleum products and the marketing of petroleum products. Intersegment revenues result from storage agreements with wholly owned subsidiaries of NuStar Energy at rates consistent with the rates charged to third parties for storage.

Results of operations for the reportable segments were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars)
Revenues:
Pipeline	$	126,740		$	121,575		$	247,980		$	240,448
Storage:
Third parties	154,830			146,367			298,318			292,751
Intersegment	3,729			5,507			7,672			11,522
Total storage	158,559			151,874			305,990			304,273
Fuels marketing	153,918			169,862			376,620			310,308
Consolidation and intersegment eliminations	(3,729		)	(5,507		)	(7,672		)	(11,522		)
Total revenues	$	435,488		$	437,804		$	922,918		$	843,507
Operating income:
Pipeline	$	52,868		$	63,552		$	117,896		$	127,817
Storage	56,049			51,063			109,808			108,076
Fuels marketing	289			1,392			5,429			619
Consolidation and intersegment eliminations	1			1			1			1
Total segment operating income	109,207			116,008			233,134			236,513
General and administrative expenses	33,604			22,657			58,199			46,442
Other depreciation and amortization expense	2,199			2,134			4,392			4,289
Total operating income	$	73,404		$	91,217		$	170,543		$	185,782

Total assets by reportable segment were as follows:

	June 30, 2017		December 31, 2016
	(Thousands of Dollars)
Pipeline	$	3,458,700	$	2,024,633
Storage	2,605,122		2,522,586
Fuels marketing	103,623		168,347
Total segment assets	6,167,445		4,715,566
Other partnership assets	191,879		314,979
Total consolidated assets	$	6,359,324	$	5,030,545

XML

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS

6 Months Ended

Jun. 30, 2017

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS [Abstract]

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS

NuStar Energy has no operations and its assets consist mainly of its 100% indirectly owned subsidiaries, NuStar Logistics and NuPOP. The senior and subordinated notes issued by NuStar Logistics are fully and unconditionally guaranteed by NuStar Energy and NuPOP. As a result, the following condensed consolidating financial statements are presented as an alternative to providing separate financial statements for NuStar Logistics and NuPOP.

Condensed Consolidating Balance Sheets

June 30, 2017

(Thousands of Dollars)

	NuStar Energy		NuStar Logistics		NuPOP		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Cash and cash equivalents	$	867	$	64	$	—	$	28,260	$	—		$	29,191
Receivables, net	—		93		—		147,541		—			147,634
Inventories	—		1,977		3,254		20,541		—			25,772
Other current assets	69		12,623		5,475		10,134		(36		)	28,265
Intercompany receivable	—		3,088,723		—		—		(3,088,723		)	—
Total current assets	936		3,103,480		8,729		206,476		(3,088,759		)	230,862
Property, plant and equipment, net	—		1,911,890		578,504		1,656,939		—			4,147,333
Intangible assets, net	—		63,163		—		794,453		—			857,616
Goodwill	—		149,453		170,652		703,254		—			1,023,359
Investment in wholly owned subsidiaries	3,085,078		28,711		1,270,678		842,841		(5,227,308		)	—
Deferred income tax asset	—		—		—		1,359		—			1,359
Other long-term assets, net	378		60,588		28,039		9,790		—			98,795
Total assets	$	3,086,392	$	5,317,285	$	2,056,602	$	4,215,112	$	(8,316,067	)	$	6,359,324
Liabilities and Partners’ Equity
Accounts payable	$	6,330	$	21,064	$	5,573	$	59,701	$	—		$	92,668
Short-term debt	—		45,000		—		—		—			45,000
Current portion of long-term debt	—		350,021		—		53,054		—			403,075
Accrued interest payable	—		40,206		—		26		—			40,232
Accrued liabilities	720		19,929		11,434		23,903		—			55,986
Taxes other than income tax	8		5,867		3,819		7,015		—			16,709
Income tax payable	—		—		2		881		(36		)	847
Intercompany payable	489,002		—		1,182,082		1,417,639		(3,088,723		)	—
Total current liabilities	496,060		482,087		1,202,910		1,562,219		(3,088,759		)	654,517
Long-term debt	—		3,073,864		—		—		—			3,073,864
Deferred income tax liability	—		1,862		13		20,988		—			22,863
Other long-term liabilities	—		43,538		10,973		52,520		—			107,031
Total partners’ equity	2,590,332		1,715,934		842,706		2,579,385		(5,227,308		)	2,501,049
Total liabilities and partners’ equity	$	3,086,392	$	5,317,285	$	2,056,602	$	4,215,112	$	(8,316,067	)	$	6,359,324

Condensed Consolidating Balance Sheets

December 31, 2016

(Thousands of Dollars)

	NuStar Energy		NuStar Logistics		NuPOP		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Cash and cash equivalents	$	870	$	5	$	—	$	35,067	$	—		$	35,942
Receivables, net	—		3,040		—		167,570		—			170,610
Inventories	—		2,216		2,005		33,724		—			37,945
Other current assets	61		120,350		1,829		10,446		—			132,686
Intercompany receivable	—		1,308,415		—		57,785		(1,366,200		)	—
Total current assets	931		1,434,026		3,834		304,592		(1,366,200		)	377,183
Property, plant and equipment, net	—		1,935,172		589,139		1,197,972		—			3,722,283
Intangible assets, net	—		71,033		—		56,050		—			127,083
Goodwill	—		149,453		170,652		376,532		—			696,637
Investment in wholly owned subsidiaries	1,964,736		34,778		1,221,717		874,649		(4,095,880		)	—
Deferred income tax asset	—		—		—		2,051		—			2,051
Other long-term assets, net	1,255		63,586		28,587		11,880		—			105,308
Total assets	$	1,966,922	$	3,688,048	$	2,013,929	$	2,823,726	$	(5,462,080	)	$	5,030,545
Liabilities and Partners’ Equity
Accounts payable	$	2,436	$	24,272	$	7,124	$	84,854	$	—		$	118,686
Short-term debt	—		54,000		—		—		—			54,000
Accrued interest payable	—		34,008		—		22		—			34,030
Accrued liabilities	1,070		7,118		10,766		41,531		—			60,485
Taxes other than income tax	125		6,854		3,253		5,453		—			15,685
Income tax payable	—		1,326		5		5,179		—			6,510
Intercompany payable	257,497		—		1,108,703		—		(1,366,200		)	—
Total current liabilities	261,128		127,578		1,129,851		137,039		(1,366,200		)	289,396
Long-term debt	—		2,956,338		—		58,026		—			3,014,364
Deferred income tax liability	—		1,862		13		20,329		—			22,204
Other long-term liabilities	—		34,358		9,436		49,170		—			92,964
Total partners’ equity	1,705,794		567,912		874,629		2,559,162		(4,095,880		)	1,611,617
Total liabilities and partners’ equity	$	1,966,922	$	3,688,048	$	2,013,929	$	2,823,726	$	(5,462,080	)	$	5,030,545

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Three Months Ended June 30, 2017

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Revenues	$	—		$	128,895		$	50,577		$	256,363	$	(347	)	$	435,488
Costs and expenses	486			83,096			37,781			241,068		(347		)	362,084
Operating (loss) income	(486		)	45,799			12,796			15,295		—			73,404
Equity in earnings (loss) of subsidiaries	26,732			(7,177		)	22,746			34,141		(76,442		)	—
Interest income (expense), net	4			(46,390		)	(1,401		)	2,175		—			(45,612		)
Other income, net	—			62			3			23		—			88
Income (loss) before income tax (benefit) expense	26,250			(7,706		)	34,144			51,634		(76,442		)	27,880
Income tax (benefit) expense	—			(365		)	1			1,994		—			1,630
Net income (loss)	$	26,250		$	(7,341	)	$	34,143		$	49,640	$	(76,442	)	$	26,250
Comprehensive income (loss)	$	26,250		$	(13,592	)	$	34,143		$	57,022	$	(76,442	)	$	27,381

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Three Months Ended June 30, 2016

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP		Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	125,562		$	58,129	$	254,489		$	(376	)	$	437,804
Costs and expenses	434			73,505			35,986		237,038			(376		)	346,587
Operating (loss) income	(434		)	52,057			22,143		17,451			—			91,217
Equity in earnings (loss) of subsidiaries	52,929			(2,203		)	20,171		44,346			(115,243		)	—
Interest (expense) income, net	—			(41,155		)	2,026		549			4,351			(34,229		)
Other income (expense), net	22			21			7		(251		)	—			(201		)
Income before income tax expense	52,517			8,720			44,347		62,095			(110,892		)	56,787
Income tax expense	—			347			3		3,920			—			4,270
Net income	$	52,517		$	8,373		$	44,344	$	58,175		$	(110,892	)	$	52,517
Comprehensive income (loss)	$	52,517		$	(9,669	)	$	44,344	$	52,878		$	(110,892	)	$	29,178

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Six Months Ended June 30, 2017

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Revenues	$	—		$	252,524		$	102,818		$	568,210	$	(634	)	$	922,918
Costs and expenses	995			159,418			67,587			525,009		(634		)	752,375
Operating (loss) income	(995		)	93,106			35,231			43,201		—			170,543
Equity in earnings (loss) of subsidiaries	85,177			(6,067		)	48,961			81,494		(209,565		)	—
Interest income (expense), net	8			(83,304		)	(2,705		)	3,975		—			(82,026		)
Other income, net	—			83			9			136		—			228
Income before income tax (benefit) expense	84,190			3,818			81,496			128,806		(209,565		)	88,745
Income tax (benefit) expense	—			(34		)	2			4,587		—			4,555
Net income	$	84,190		$	3,852		$	81,494		$	124,219	$	(209,565	)	$	84,190
Comprehensive income (loss)	$	84,190		$	(561	)	$	81,494		$	133,526	$	(209,565	)	$	89,084

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Six Months Ended June 30, 2016

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	252,140		$	106,114		$	485,965		$	(712	)	$	843,507
Costs and expenses	952			142,396			67,001			448,088			(712		)	657,725
Operating (loss) income	(952		)	109,744			39,113			37,877			—			185,782
Equity in earnings (loss) of       subsidiaries	110,851			(5,318		)	45,454			88,089			(239,076		)	—
Interest (expense) income, net	—			(80,787		)	3,534			8,901			—			(68,352		)
Other income (expense), net	22			22			(10		)	(406		)	—			(372		)
Income before income tax expense	109,921			23,661			88,091			134,461			(239,076		)	117,058
Income tax expense	3			693			5			6,439			—			7,140
Net income	$	109,918		$	22,968		$	88,086		$	128,022		$	(239,076	)	$	109,918
Comprehensive income (loss)	$	109,918		$	(22,830	)	$	88,086		$	135,703		$	(239,076	)	$	71,801

Condensed Consolidating Statements of Cash Flows

For the Six Months Ended June 30, 2017

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by operating      activities	$	225,566		$	85,203		$	45,790		$	192,692		$	(340,263	)	$	208,988
Cash flows from investing activities:
Capital expenditures	—			(19,639		)	(5,588		)	(83,622		)	—			(108,849		)
Change in accounts payable     related to capital expenditures	—			(2,823		)	(35		)	9,709			—			6,851
Acquisitions	—			—			—			(1,476,719		)	—			(1,476,719		)
Proceeds from sale or disposition of assets	—			1,898			12			56			—			1,966
Investment in subsidiaries	(1,262,000		)	—			—			(126		)	1,262,126			—
Proceeds from Axeon term loan	—			110,000			—			—			—			110,000
Net cash (used in) provided by investing activities	(1,262,000		)	89,436			(5,611		)	(1,550,702		)	1,262,126			(1,466,751		)
Cash flows from financing activities:
Debt borrowings	—			1,536,761			—			65,400			—			1,602,161
Debt repayments	—			(1,625,739		)	—			(70,500		)	—			(1,696,239		)
Note offering, net of issuance costs	—			543,313			—			—			—			543,313
Issuance of preferred units, net of issuance costs	371,802			—			—			—			—			371,802
Issuance of common units, net of issuance costs	643,858			—			—			—			—			643,858
General partner contribution	13,597			—			—			—			—			13,597
Distributions to preferred unitholders	(10,696		)	(5,348		)	(5,348		)	(5,348		)	16,044			(10,696		)
Distributions to common unitholders and general partner	(216,139		)	(108,070		)	(108,069		)	(108,080		)	324,219			(216,139		)
Contributions from affiliates	—			1,262,000			—			126			(1,262,126		)	—
Net intercompany activity	236,622			(1,778,816		)	73,237			1,468,957			—			—
Other, net	(2,613		)	1,319			1			(1		)	—			(1,294		)
Net cash provided by (used in) financing activities	1,036,431			(174,580		)	(40,179		)	1,350,554			(921,863		)	1,250,363
Effect of foreign exchange rate changes on cash	—			—			—			649			—			649
Net (decrease) increase in cash and cash equivalents	(3		)	59			—			(6,807		)	—			(6,751		)
Cash and cash equivalents as of the beginning of the period	870			5			—			35,067			—			35,942
Cash and cash equivalents as of the end of the period	$	867		$	64		$	—		$	28,260		$	—		$	29,191

Condensed Consolidating Statements of Cash Flows

For the Six Months Ended June 30, 2016

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by operating activities	$	194,793		$	58,160		$	79,728		$	201,026		$	(318,674	)	$	215,033
Cash flows from investing activities:
Capital expenditures	—			(47,672		)	(19,474		)	(28,215		)	—			(95,361		)
Change in accounts payable     related to capital expenditures	—			(12,230		)	3,357			(3,801		)	—			(12,674		)
Net cash used in investing activities	—			(59,902		)	(16,117		)	(32,016		)	—			(108,035		)
Cash flows from financing activities:
Debt borrowings	—			610,504			—			17,400			—			627,904
Debt repayments	—			(532,992		)	—			(14,200		)	—			(547,192		)
Distributions to common unitholders and general partner	(196,102		)	(98,051		)	(98,051		)	(98,062		)	294,164			(196,102		)
Distributions to affiliates	—			—			—			(24,510		)	24,510			—
Net intercompany activity	1,755			24,561			34,440			(60,756		)	—			—
Other, net	(668		)	(2,281		)	—			(8,891		)	—			(11,840		)
Net cash (used in) provided by      financing activities	(195,015		)	1,741			(63,611		)	(189,019		)	318,674			(127,230		)
Effect of foreign exchange rate changes on cash	—			—			—			4,389			—			4,389
Net decrease in cash and cash equivalents	(222		)	(1		)	—			(15,620		)	—			(15,843		)
Cash and cash equivalents as of the beginning of the period	885			4			—			117,973			—			118,862
Cash and cash equivalents as of the end of the period	$	663		$	3		$	—		$	102,353		$	—		$	103,019

XML

ACQUISITIONS (Tables)

6 Months Ended

Jun. 30, 2017

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The following table reflects the preliminary purchase price allocation:

	Preliminary Purchase Price Allocation
	(Thousands of Dollars)
Accounts receivable	$	4,916
Other current assets	2,476
Property, plant and equipment, net	396,603
Intangible assets (a)	750,000
Goodwill (b)	326,722
Other long-term assets, net	2,125
Current liabilities	(26,971		)
Preliminary purchase price allocation, net of cash acquired	1,455,871
Pending closing adjustment	20,848
Cash disbursed at closing	$	1,476,719

Business Acquisition, Pro Forma Information [Table Text Block]

The unaudited pro forma information for the three and six months ended June 30, 2017 and 2016 presented below combines the historical financial information for Navigator and the Partnership for those periods. The information assumes we completed the Navigator Acquisition on January 1, 2016 and the following:

• we issued approximately 14.4 million common units;

• we received a contribution from our general partner of $13.6 million to maintain its 2% interest;

• we issued 15.4 million Series B Preferred Units;

• we issued $550.0 million of 5.625% senior notes;

• additional depreciation and amortization that would have been incurred assuming the fair value adjustments to property, plant and equipment and intangible assets reflected in the preliminary purchase price allocation above have been applied; and

• we satisfied Navigator’s outstanding obligations under its revolving credit agreement.

	Three Months Ended June 30,					Six Months Ended June 30,
	2017			2016		2017		2016
	(Thousands of Dollars, Except Per Unit Data)
Revenues	$	439,933		$	443,314	$	937,317	$	852,169
Net income	$	21,211		$	33,378	$	63,659	$	70,118
Basic and diluted net (loss) income per common unit	$	(0.03	)	$	0.15	$	0.16	$	0.34

XML

FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

The following assets and liabilities are measured at fair value on a recurring basis:

	June 30, 2017
	Level 1			Level 2			Level 3		Total
	(Thousands of Dollars)
Assets:
Other current assets:
Product imbalances	$	5,249		$	—		$	—	$	5,249
Total	$	5,249		$	—		$	—	$	5,249
Liabilities:
Accrued liabilities:
Product imbalances	$	(3,031	)	$	—		$	—	$	(3,031	)
Commodity derivatives	(451		)	—			—		(451		)
Interest rate swaps	—			(6,392		)	—		(6,392		)
Other long-term liabilities:
Interest rate swaps	—			(2,867		)	—		(2,867		)
Total	$	(3,482	)	$	(9,259	)	$	—	$	(12,741	)

	December 31, 2016
	Level 1			Level 2			Level 3			Total
	(Thousands of Dollars)
Assets:
Other current assets:
Product imbalances	$	1,551		$	—		$	—		$	1,551
Commodity derivatives	—			155			—			155
Other long-term assets, net:
Interest rate swaps	—			1,314			—			1,314
Total	$	1,551		$	1,469		$	—		$	3,020
Liabilities:
Accrued liabilities:
Product imbalances	$	(1,577	)	$	—		$	—		$	(1,577	)
Commodity derivatives	(4,887		)	(165		)	—			(5,052		)
Other long-term liabilities:
Guarantee liability	—			—			(1,230		)	(1,230		)
Interest rate swaps	—			(2,632		)	—			(2,632		)
Total	$	(6,464	)	$	(2,797	)	$	(1,230	)	$	(10,491	)

Fair Value and Carrying Value of Debt and Note Receivable [Table Text Block]

The estimated fair values and carrying amounts of long-term debt, including the current portion, and the Axeon Term Loan were as follows:

	June 30, 2017		December 31, 2016
	Long-term Debt		Long-term Debt		Axeon Term Loan
	(Thousands of Dollars)
Fair value	$	3,591,708	$	3,084,762	$	110,000
Carrying amount	$	3,476,939	$	3,014,364	$	110,000

XML

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES (Tables)

6 Months Ended

Jun. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The fair values of our derivative instruments included in our consolidated balance sheets were as follows:

		Asset Derivatives				Liability Derivatives
	Balance Sheet Location	June 30, 2017		December 31, 2016		June 30, 2017			December 31, 2016
		(Thousands of Dollars)
Derivatives Designated as Hedging Instruments:
Interest rate swaps	Other long-term assets, net	$	—	$	1,314	$	—		$	—
Commodity contracts	Accrued liabilities	162		144		(188		)	(3,566		)
Interest rate swaps	Accrued liabilities	—		—		(6,392		)	—
Interest rate swaps	Other long-term liabilities	—		—		(2,867		)	(2,632		)
Total		162		1,458		(9,447		)	(6,198		)
Derivatives Not Designated as Hedging Instruments:
Commodity contracts	Other current assets	—		265		—			(110		)
Commodity contracts	Accrued liabilities	1,387		9,128		(1,812		)	(10,758		)
Total		1,387		9,393		(1,812		)	(10,868		)
Total Derivatives		$	1,549	$	10,851	$	(11,259	)	$	(17,066	)

Derivatives Assets And Liabilities Eligible for Offset Net [Table Text Block]

The following are the net amounts presented on the consolidated balance sheets:

Commodity Contracts	June 30, 2017			December 31, 2016
	(Thousands of Dollars)
Net amounts of assets presented in the consolidated balance sheets	$	—		$	155
Net amounts of liabilities presented in the consolidated balance sheets	$	(451	)	$	(5,052	)

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Text Block]

We recognize the impact of our commodity contracts on earnings in “Cost of product sales” on the condensed consolidated statements of comprehensive income, and that impact was as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars)
Derivatives Designated as Fair Value Hedging Instruments:
Gain (loss) recognized in income on derivative	$	364		$	(5,792	)	$	2,461		$	(6,804	)
(Loss) gain recognized in income on hedged item	(313		)	6,938			(2,147		)	9,804
Gain recognized in income for ineffective portion	51			1,146			314			3,000
Derivatives Not Designated as Hedging Instruments:
Gain (loss) recognized in income on derivative	$	52		$	(724	)	$	(86	)	$	(4	)

Our interest rate swaps had the following impact on earnings:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars)
Derivatives Designated as Cash Flow Hedging Instruments:
Loss recognized in other comprehensive income on derivative (effective portion)	$	(7,980	)	$	(20,200	)	$	(7,941	)	$	(50,178	)
Loss reclassified from AOCI into interest expense, net (effective portion)	$	(1,729	)	$	(2,158	)	$	(3,528	)	$	(4,380	)

XML

EMPLOYEE BENEFIT PLANS (Tables)

6 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The following table summarizes the components of net periodic benefit costs for the Pension Plans and other postretirement benefits on a combined basis for periods prior to the Employee Transfer and after the Employee Transfer:

	Pension Plans						Other Postretirement Benefits
	2017			2016			2017			2016
	(Thousands of Dollars)
For the three months ended June 30:
Service cost	$	2,239		$	1,926		$	113		$	105
Interest cost	1,127			1,006			108			100
Expected return on assets	(1,602		)	(1,351		)	—			—
Amortization of prior service credit	(516		)	(516		)	(286		)	(286		)
Amortization of net loss	371			273			48			45
Net periodic benefit cost (income)	$	1,619		$	1,338		$	(17	)	$	(36	)
For the six months ended June 30:
Service cost	$	4,478		$	3,852		$	226		$	210
Interest cost	2,254			2,012			216			200
Expected return on assets	(3,205		)	(2,703		)	—			—
Amortization of prior service credit	(1,031		)	(1,033		)	(572		)	(572		)
Amortization of net loss	742			546			96			90
Net periodic benefit cost (income)	$	3,238		$	2,674		$	(34	)	$	(72	)

XML

PARTNERS' EQUITY (Tables)

6 Months Ended

Jun. 30, 2017

Distribution Made to Limited Partner [Line Items]

Schedule of Changes in Partners' Equity

The following table summarizes changes to our partners’ equity (in thousands of dollars):

Balance as of January 1, 2017	$	1,611,617
Net income	84,190
Unit-based compensation expense	2,564
Other comprehensive income	4,894
Distributions to partners	(230,902		)
Issuance of preferred and common units, including contribution from general partner	1,029,257
Other	(571		)
Balance as of June 30, 2017	$	2,501,049

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The balance of and changes in the components included in AOCI were as follows:

	Foreign Currency Translation			Cash Flow Hedges			Pension and Other Postretirement Benefits			Total
	(Thousands of Dollars)
Balance as of January 1, 2017	$	(69,069	)	$	(22,258	)	$	(2,850	)	$	(94,177	)
Other comprehensive income (loss):
Other comprehensive income (loss) before    reclassification adjustments	10,072			(7,941		)	—			2,131
Net gain on pension costs reclassified into operating    expense	—			—			(572		)	(572		)
Net gain on pension costs reclassified into general and    administrative expense	—			—			(193		)	(193		)
Net loss on cash flow hedges reclassified into interest    expense, net	—			3,528			—			3,528
Other comprehensive income (loss)	10,072			(4,413		)	(765		)	4,894
Balance as of June 30, 2017	$	(58,997	)	$	(26,671	)	$	(3,615	)	$	(89,283	)

Schedule of Calculation of Net Income Applicable to General Partner [Text Block]

The following table details the calculation of net income applicable to the general partner:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars, Except Percentage Data)
Net income attributable to NuStar Energy L.P.	$	26,250		$	52,517		$	84,190		$	109,918
Less preferred limited partner interest	9,950			—			14,763			—
Less general partner incentive distribution	10,912			10,805			23,824			21,610
Net income after general partner incentive distribution and preferred limited partner interest	5,388			41,712			45,603			88,308
General partner interest allocation	2		%	2		%	2		%	2		%
General partner interest allocation of net income	108			834			912			1,766
General partner incentive distribution	10,912			10,805			23,824			21,610
Net income applicable to general partner	$	11,020		$	11,639		$	24,736		$	23,376

Schedule of Distributions To General and Limited Partners [Text Block]

The following table reflects the allocation of total cash distributions to the general partner and common limited partners applicable to the period in which the distributions were earned:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
	(Thousands of Dollars, Except Per Unit Data)
General partner interest	$	2,302	$	1,961	$	4,645	$	3,922
General partner incentive distribution	10,912		10,805		23,824		21,610
Total general partner distribution	13,214		12,766		28,469		25,532
Common limited partners’ distribution	101,869		85,285		203,782		170,570
Total cash distributions	$	115,083	$	98,051	$	232,251	$	196,102
Cash distributions per unit applicable to common limited partners	$	1.095	$	1.095	$	2.190	$	2.190

Distributions Made to Limited and General Partners, by Distribution [Table Text Block]

The following table summarizes information related to our quarterly cash distributions to our general partner and common limited partners:

Quarter Ended	Cash Distributions Per Unit		Total Cash Distributions		Record Date	Payment Date
			(Thousands of Dollars)
June 30, 2017 (a)	$	1.095	$	115,083	August 7, 2017	August 11, 2017
March 31, 2017	$	1.095	$	117,168	May 8, 2017	May 12, 2017
December 31, 2016	$	1.095	$	98,971	February 8, 2017	February 13, 2017

(a) The distribution was announced on July 28, 2017.

Distributions Made to Limited Partner, by Distribution [Table Text Block]

The following table summarizes information related to our quarterly cash distributions on our Series A and Series B Preferred Units:

Period	Cash Distributions Per Unit		Total Cash Distributions		Record Date	Payment Date
			(Thousands of Dollars)
Series A Preferred Units:
June 15, 2017 - September 14, 2017 (a)	$	0.53125	$	4,813	September 1, 2017	September 15, 2017
March 15, 2017 - June 14, 2017	$	0.53125	$	4,813	June 1, 2017	June 15, 2017
November 25, 2016 - March 14, 2017	$	0.64930556	$	5,883	March 1, 2017	March 15, 2017
Series B Preferred Units:
April 28, 2017 - September 14, 2017 (a)	$	0.725434028	$	11,172	September 1, 2017	September 15, 2017

(a) The distribution was announced on July 28, 2017.

XML

NET INCOME PER COMMON UNIT (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Schedule of Net Income Per Common Unit

The following table details the calculation of net income per common unit:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars, Except Unit and Per Unit Data)
Net income attributable to NuStar Energy L.P.	$	26,250		$	52,517		$	84,190		$	109,918
Less: Distributions to general partner (including incentive     distribution rights)	13,214			12,766			28,469			25,532
Less: Distributions to common limited partners	101,869			85,285			203,782			170,570
Less: Distributions to preferred limited partners	9,950			—			14,763			—
Less: Distribution equivalent rights to restricted units	712			657			1,427			1,319
Distributions in excess of earnings	$	(99,495	)	$	(46,191	)	$	(164,251	)	$	(87,503	)
Net income attributable to common units:
Distributions to common limited partners	$	101,869		$	85,285		$	203,782		$	170,570
Allocation of distributions in excess of earnings	(97,505		)	(45,267		)	(160,966		)	(85,752		)
Total	$	4,364		$	40,018		$	42,816		$	84,818
Basic weighted-average common units outstanding	90,345,469			77,886,219			84,526,506			77,886,148
Diluted common units outstanding:
Basic weighted-average common units outstanding	90,345,469			77,886,219			84,526,506			77,886,148
Effect of dilutive potential common units	—			53,060			—			57,554
Diluted weighted-average common units outstanding	90,345,469			77,939,279			84,526,506			77,943,702
Basic and diluted net income per common unit	$	0.05		$	0.52		$	0.51		$	1.09

XML

STATEMENTS OF CASH FLOWS (Tables)

6 Months Ended

Jun. 30, 2017

Statement of Cash Flows [Abstract]

Schedule of Changes in Current Assets and Liabilities [Text Block]

Changes in current assets and current liabilities were as follows:

	Six Months Ended June 30,
	2017			2016
	(Thousands of Dollars)
Decrease (increase) in current assets:
Accounts receivable	$	48,875		$	(572	)
Receivable from related party	231			—
Inventories	13,005			99
Other current assets	(2,388		)	5,064
Increase (decrease) in current liabilities:
Accounts payable	(57,822		)	(4,717		)
Payable to related party, net	—			697
Accrued interest payable	6,234			(393		)
Accrued liabilities	(14,703		)	(12,321		)
Taxes other than income tax	(3,094		)	(348		)
Income tax payable	(5,682		)	(2,783		)
Changes in current assets and current liabilities	$	(15,344	)	$	(15,274	)

Schedule of Supplemental Cash Flow Information [Text Block]

Cash flows related to interest and income taxes were as follows:

	Six Months Ended June 30,
	2017		2016
	(Thousands of Dollars)
Cash paid for interest, net of amount capitalized	$	70,119	$	70,280
Cash paid for income taxes, net of tax refunds received	$	9,556	$	8,826

XML

SEGMENT INFORMATION (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

Results of operations for the reportable segments were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(Thousands of Dollars)
Revenues:
Pipeline	$	126,740		$	121,575		$	247,980		$	240,448
Storage:
Third parties	154,830			146,367			298,318			292,751
Intersegment	3,729			5,507			7,672			11,522
Total storage	158,559			151,874			305,990			304,273
Fuels marketing	153,918			169,862			376,620			310,308
Consolidation and intersegment eliminations	(3,729		)	(5,507		)	(7,672		)	(11,522		)
Total revenues	$	435,488		$	437,804		$	922,918		$	843,507
Operating income:
Pipeline	$	52,868		$	63,552		$	117,896		$	127,817
Storage	56,049			51,063			109,808			108,076
Fuels marketing	289			1,392			5,429			619
Consolidation and intersegment eliminations	1			1			1			1
Total segment operating income	109,207			116,008			233,134			236,513
General and administrative expenses	33,604			22,657			58,199			46,442
Other depreciation and amortization expense	2,199			2,134			4,392			4,289
Total operating income	$	73,404		$	91,217		$	170,543		$	185,782

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

Total assets by reportable segment were as follows:

	June 30, 2017		December 31, 2016
	(Thousands of Dollars)
Pipeline	$	3,458,700	$	2,024,633
Storage	2,605,122		2,522,586
Fuels marketing	103,623		168,347
Total segment assets	6,167,445		4,715,566
Other partnership assets	191,879		314,979
Total consolidated assets	$	6,359,324	$	5,030,545

XML

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (Tables)

6 Months Ended

Jun. 30, 2017

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS [Abstract]

Condensed Consolidating Balance Sheets [Text Block]

Condensed Consolidating Balance Sheets

June 30, 2017

(Thousands of Dollars)

	NuStar Energy		NuStar Logistics		NuPOP		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Cash and cash equivalents	$	867	$	64	$	—	$	28,260	$	—		$	29,191
Receivables, net	—		93		—		147,541		—			147,634
Inventories	—		1,977		3,254		20,541		—			25,772
Other current assets	69		12,623		5,475		10,134		(36		)	28,265
Intercompany receivable	—		3,088,723		—		—		(3,088,723		)	—
Total current assets	936		3,103,480		8,729		206,476		(3,088,759		)	230,862
Property, plant and equipment, net	—		1,911,890		578,504		1,656,939		—			4,147,333
Intangible assets, net	—		63,163		—		794,453		—			857,616
Goodwill	—		149,453		170,652		703,254		—			1,023,359
Investment in wholly owned subsidiaries	3,085,078		28,711		1,270,678		842,841		(5,227,308		)	—
Deferred income tax asset	—		—		—		1,359		—			1,359
Other long-term assets, net	378		60,588		28,039		9,790		—			98,795
Total assets	$	3,086,392	$	5,317,285	$	2,056,602	$	4,215,112	$	(8,316,067	)	$	6,359,324
Liabilities and Partners’ Equity
Accounts payable	$	6,330	$	21,064	$	5,573	$	59,701	$	—		$	92,668
Short-term debt	—		45,000		—		—		—			45,000
Current portion of long-term debt	—		350,021		—		53,054		—			403,075
Accrued interest payable	—		40,206		—		26		—			40,232
Accrued liabilities	720		19,929		11,434		23,903		—			55,986
Taxes other than income tax	8		5,867		3,819		7,015		—			16,709
Income tax payable	—		—		2		881		(36		)	847
Intercompany payable	489,002		—		1,182,082		1,417,639		(3,088,723		)	—
Total current liabilities	496,060		482,087		1,202,910		1,562,219		(3,088,759		)	654,517
Long-term debt	—		3,073,864		—		—		—			3,073,864
Deferred income tax liability	—		1,862		13		20,988		—			22,863
Other long-term liabilities	—		43,538		10,973		52,520		—			107,031
Total partners’ equity	2,590,332		1,715,934		842,706		2,579,385		(5,227,308		)	2,501,049
Total liabilities and partners’ equity	$	3,086,392	$	5,317,285	$	2,056,602	$	4,215,112	$	(8,316,067	)	$	6,359,324

Condensed Consolidating Balance Sheets

December 31, 2016

(Thousands of Dollars)

	NuStar Energy		NuStar Logistics		NuPOP		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Cash and cash equivalents	$	870	$	5	$	—	$	35,067	$	—		$	35,942
Receivables, net	—		3,040		—		167,570		—			170,610
Inventories	—		2,216		2,005		33,724		—			37,945
Other current assets	61		120,350		1,829		10,446		—			132,686
Intercompany receivable	—		1,308,415		—		57,785		(1,366,200		)	—
Total current assets	931		1,434,026		3,834		304,592		(1,366,200		)	377,183
Property, plant and equipment, net	—		1,935,172		589,139		1,197,972		—			3,722,283
Intangible assets, net	—		71,033		—		56,050		—			127,083
Goodwill	—		149,453		170,652		376,532		—			696,637
Investment in wholly owned subsidiaries	1,964,736		34,778		1,221,717		874,649		(4,095,880		)	—
Deferred income tax asset	—		—		—		2,051		—			2,051
Other long-term assets, net	1,255		63,586		28,587		11,880		—			105,308
Total assets	$	1,966,922	$	3,688,048	$	2,013,929	$	2,823,726	$	(5,462,080	)	$	5,030,545
Liabilities and Partners’ Equity
Accounts payable	$	2,436	$	24,272	$	7,124	$	84,854	$	—		$	118,686
Short-term debt	—		54,000		—		—		—			54,000
Accrued interest payable	—		34,008		—		22		—			34,030
Accrued liabilities	1,070		7,118		10,766		41,531		—			60,485
Taxes other than income tax	125		6,854		3,253		5,453		—			15,685
Income tax payable	—		1,326		5		5,179		—			6,510
Intercompany payable	257,497		—		1,108,703		—		(1,366,200		)	—
Total current liabilities	261,128		127,578		1,129,851		137,039		(1,366,200		)	289,396
Long-term debt	—		2,956,338		—		58,026		—			3,014,364
Deferred income tax liability	—		1,862		13		20,329		—			22,204
Other long-term liabilities	—		34,358		9,436		49,170		—			92,964
Total partners’ equity	1,705,794		567,912		874,629		2,559,162		(4,095,880		)	1,611,617
Total liabilities and partners’ equity	$	1,966,922	$	3,688,048	$	2,013,929	$	2,823,726	$	(5,462,080	)	$	5,030,545

Condensed Consolidating Statements of Comprehensive Income (Loss) [Table Text Block]

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Three Months Ended June 30, 2017

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Revenues	$	—		$	128,895		$	50,577		$	256,363	$	(347	)	$	435,488
Costs and expenses	486			83,096			37,781			241,068		(347		)	362,084
Operating (loss) income	(486		)	45,799			12,796			15,295		—			73,404
Equity in earnings (loss) of subsidiaries	26,732			(7,177		)	22,746			34,141		(76,442		)	—
Interest income (expense), net	4			(46,390		)	(1,401		)	2,175		—			(45,612		)
Other income, net	—			62			3			23		—			88
Income (loss) before income tax (benefit) expense	26,250			(7,706		)	34,144			51,634		(76,442		)	27,880
Income tax (benefit) expense	—			(365		)	1			1,994		—			1,630
Net income (loss)	$	26,250		$	(7,341	)	$	34,143		$	49,640	$	(76,442	)	$	26,250
Comprehensive income (loss)	$	26,250		$	(13,592	)	$	34,143		$	57,022	$	(76,442	)	$	27,381

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Three Months Ended June 30, 2016

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP		Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	125,562		$	58,129	$	254,489		$	(376	)	$	437,804
Costs and expenses	434			73,505			35,986		237,038			(376		)	346,587
Operating (loss) income	(434		)	52,057			22,143		17,451			—			91,217
Equity in earnings (loss) of subsidiaries	52,929			(2,203		)	20,171		44,346			(115,243		)	—
Interest (expense) income, net	—			(41,155		)	2,026		549			4,351			(34,229		)
Other income (expense), net	22			21			7		(251		)	—			(201		)
Income before income tax expense	52,517			8,720			44,347		62,095			(110,892		)	56,787
Income tax expense	—			347			3		3,920			—			4,270
Net income	$	52,517		$	8,373		$	44,344	$	58,175		$	(110,892	)	$	52,517
Comprehensive income (loss)	$	52,517		$	(9,669	)	$	44,344	$	52,878		$	(110,892	)	$	29,178

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Six Months Ended June 30, 2017

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Revenues	$	—		$	252,524		$	102,818		$	568,210	$	(634	)	$	922,918
Costs and expenses	995			159,418			67,587			525,009		(634		)	752,375
Operating (loss) income	(995		)	93,106			35,231			43,201		—			170,543
Equity in earnings (loss) of subsidiaries	85,177			(6,067		)	48,961			81,494		(209,565		)	—
Interest income (expense), net	8			(83,304		)	(2,705		)	3,975		—			(82,026		)
Other income, net	—			83			9			136		—			228
Income before income tax (benefit) expense	84,190			3,818			81,496			128,806		(209,565		)	88,745
Income tax (benefit) expense	—			(34		)	2			4,587		—			4,555
Net income	$	84,190		$	3,852		$	81,494		$	124,219	$	(209,565	)	$	84,190
Comprehensive income (loss)	$	84,190		$	(561	)	$	81,494		$	133,526	$	(209,565	)	$	89,084

Condensed Consolidating Statements of Comprehensive Income (Loss)

For the Six Months Ended June 30, 2016

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenues	$	—		$	252,140		$	106,114		$	485,965		$	(712	)	$	843,507
Costs and expenses	952			142,396			67,001			448,088			(712		)	657,725
Operating (loss) income	(952		)	109,744			39,113			37,877			—			185,782
Equity in earnings (loss) of       subsidiaries	110,851			(5,318		)	45,454			88,089			(239,076		)	—
Interest (expense) income, net	—			(80,787		)	3,534			8,901			—			(68,352		)
Other income (expense), net	22			22			(10		)	(406		)	—			(372		)
Income before income tax expense	109,921			23,661			88,091			134,461			(239,076		)	117,058
Income tax expense	3			693			5			6,439			—			7,140
Net income	$	109,918		$	22,968		$	88,086		$	128,022		$	(239,076	)	$	109,918
Comprehensive income (loss)	$	109,918		$	(22,830	)	$	88,086		$	135,703		$	(239,076	)	$	71,801

Condensed Consolidating Statements of Cash Flows [Text Block]

Condensed Consolidating Statements of Cash Flows

For the Six Months Ended June 30, 2017

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by operating      activities	$	225,566		$	85,203		$	45,790		$	192,692		$	(340,263	)	$	208,988
Cash flows from investing activities:
Capital expenditures	—			(19,639		)	(5,588		)	(83,622		)	—			(108,849		)
Change in accounts payable     related to capital expenditures	—			(2,823		)	(35		)	9,709			—			6,851
Acquisitions	—			—			—			(1,476,719		)	—			(1,476,719		)
Proceeds from sale or disposition of assets	—			1,898			12			56			—			1,966
Investment in subsidiaries	(1,262,000		)	—			—			(126		)	1,262,126			—
Proceeds from Axeon term loan	—			110,000			—			—			—			110,000
Net cash (used in) provided by investing activities	(1,262,000		)	89,436			(5,611		)	(1,550,702		)	1,262,126			(1,466,751		)
Cash flows from financing activities:
Debt borrowings	—			1,536,761			—			65,400			—			1,602,161
Debt repayments	—			(1,625,739		)	—			(70,500		)	—			(1,696,239		)
Note offering, net of issuance costs	—			543,313			—			—			—			543,313
Issuance of preferred units, net of issuance costs	371,802			—			—			—			—			371,802
Issuance of common units, net of issuance costs	643,858			—			—			—			—			643,858
General partner contribution	13,597			—			—			—			—			13,597
Distributions to preferred unitholders	(10,696		)	(5,348		)	(5,348		)	(5,348		)	16,044			(10,696		)
Distributions to common unitholders and general partner	(216,139		)	(108,070		)	(108,069		)	(108,080		)	324,219			(216,139		)
Contributions from affiliates	—			1,262,000			—			126			(1,262,126		)	—
Net intercompany activity	236,622			(1,778,816		)	73,237			1,468,957			—			—
Other, net	(2,613		)	1,319			1			(1		)	—			(1,294		)
Net cash provided by (used in) financing activities	1,036,431			(174,580		)	(40,179		)	1,350,554			(921,863		)	1,250,363
Effect of foreign exchange rate changes on cash	—			—			—			649			—			649
Net (decrease) increase in cash and cash equivalents	(3		)	59			—			(6,807		)	—			(6,751		)
Cash and cash equivalents as of the beginning of the period	870			5			—			35,067			—			35,942
Cash and cash equivalents as of the end of the period	$	867		$	64		$	—		$	28,260		$	—		$	29,191

Condensed Consolidating Statements of Cash Flows

For the Six Months Ended June 30, 2016

(Thousands of Dollars)

	NuStar Energy			NuStar Logistics			NuPOP			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by operating activities	$	194,793		$	58,160		$	79,728		$	201,026		$	(318,674	)	$	215,033
Cash flows from investing activities:
Capital expenditures	—			(47,672		)	(19,474		)	(28,215		)	—			(95,361		)
Change in accounts payable     related to capital expenditures	—			(12,230		)	3,357			(3,801		)	—			(12,674		)
Net cash used in investing activities	—			(59,902		)	(16,117		)	(32,016		)	—			(108,035		)
Cash flows from financing activities:
Debt borrowings	—			610,504			—			17,400			—			627,904
Debt repayments	—			(532,992		)	—			(14,200		)	—			(547,192		)
Distributions to common unitholders and general partner	(196,102		)	(98,051		)	(98,051		)	(98,062		)	294,164			(196,102		)
Distributions to affiliates	—			—			—			(24,510		)	24,510			—
Net intercompany activity	1,755			24,561			34,440			(60,756		)	—			—
Other, net	(668		)	(2,281		)	—			(8,891		)	—			(11,840		)
Net cash (used in) provided by      financing activities	(195,015		)	1,741			(63,611		)	(189,019		)	318,674			(127,230		)
Effect of foreign exchange rate changes on cash	—			—			—			4,389			—			4,389
Net decrease in cash and cash equivalents	(222		)	(1		)	—			(15,620		)	—			(15,843		)
Cash and cash equivalents as of the beginning of the period	885			4			—			117,973			—			118,862
Cash and cash equivalents as of the end of the period	$	663		$	3		$	—		$	102,353		$	—		$	103,019

XML

ORGANIZATION AND BASIS OF PRESENTATION Narrative (Details) $ in Thousands			3 Months Ended	6 Months Ended
	May 04, 2017 USD ($)	Feb. 22, 2017 USD ($)	Jun. 30, 2017 USD ($) shares	Jun. 30, 2017 USD ($) shares	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)	Feb. 26, 2014 USD ($)
Organization and Operations [Abstract]
Common limited partner ownership interest held by general partner			11.00%	11.00%
Number of business segments				3
Class of Stock [Line Items]
Net proceeds from issuance of units				$ 1,029,257
Financing Receivable, Impaired [Line Items]
Cash collection on Axeon Term Loan				110,000	$ 0
Debt Instrument [Line Items]
Proceeds from note offering, net of issuance costs				$ 543,313	$ 0
Common Limited Partner [Member]
Class of Stock [Line Items]
Issuance of units (units) | shares			14,375,000	14,375,000
Proceeds from common unit issuance including general partner contribution			$ 657,500
Series B Preferred Limited Partner [Member]
Class of Stock [Line Items]
Issuance of units (units) | shares			15,400,000	15,400,000
Preferred units distribution percentage			7.625%
Net proceeds from issuance of units			$ 371,800
Logistics Notes Due 2027 [Member]
Debt Instrument [Line Items]
Senior notes issued			$ 550,000	$ 550,000
Stated interest rate			5.625%	5.625%
Proceeds from note offering, net of issuance costs			$ 543,300
Axeon [Member]
Financing Receivable, Impaired [Line Items]
Axeon Term Loan Receivable							$ 190,000
Maximum amount of guarantees						$ 125,000
Cash collection on Axeon Term Loan		$ 110,000
Navigator Acquisition [Member]
Business Acquisition [Line Items]
Purchase price of Navigator Acquisition	$ 1,500,000

XML

ACQUISITIONS Narrative (Details) - Navigator Acquisition [Member] $ in Billions	May 04, 2017 USD ($)
Business Acquisition [Line Items]
Purchase price of Navigator Acquisition	$ 1.5
Description of Navigator Acquisition	We acquired crude oil transportation, pipeline gathering and storage assets located in the Midland Basin of West Texas consisting of: (i) more than 500 miles of crude oil gathering and transportation pipelines with approximately 92,000 barrels per day ship-or-pay volume commitments and deliverability of approximately 412,000 barrels per day; (ii) a pipeline gathering system with more than 200 connected producer tank batteries capable of more than 400,000 barrels per day of pumping capacity covering over 500,000 dedicated acres with fixed fee contracts; and (iii) approximately 1.0 million barrels of crude oil storage capacity with 440,000 barrels contracted to third parties. We collectively refer to the acquired assets as our Permian Crude System. The assets acquired are included in our pipeline segment.

XML

ACQUISITIONS Table 1 (Details) - USD ($) $ in Thousands		6 Months Ended
	May 04, 2017	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill		$ 1,023,359		$ 696,637
Cash disbursed at closing		$ 1,476,719	$ 0
Navigator Acquisition [Member]
Business Acquisition [Line Items]
Accounts receivable	$ 4,916
Other current assets	2,476
Property, plant and equipment, net	396,603
Intangible assets	750,000
Goodwill	326,722
Other long-term assets, net	2,125
Current liabilities	(26,971)
Preliminary purchase price allocation, net of cash acquired	1,455,871
Pending closing adjustment	20,848
Cash disbursed at closing	$ 1,476,719

XML

ACQUISITIONS Narrative 2 (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	May 04, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Business Acquisition [Line Items]
Revenues		$ 435,488	$ 437,804	$ 922,918	$ 843,507
Operating (loss) income		$ 73,404	$ 91,217	170,543	$ 185,782
Net proceeds from issuance of units				$ 1,029,257
General partner ownership interest		2.00%	2.00%	2.00%	2.00%
Navigator Acquisition [Member]
Business Acquisition [Line Items]
Intangible assets, weighted average useful life (years)	20 years
Revenues		$ 9,500
Operating (loss) income		$ (3,400)
Business acquisition, transaction costs	$ 14,000
Navigator Acquisition [Member] | General and administrative expense
Business Acquisition [Line Items]
Business acquisition, transaction costs	10,200
Navigator Acquisition [Member] | Interest expense, net
Business Acquisition [Line Items]
Business acquisition, transaction costs	$ 3,700
Common Limited Partner [Member]
Business Acquisition [Line Items]
Issuance of units (units)		14,375,000		14,375,000
General Partner [Member]
Business Acquisition [Line Items]
Net proceeds from issuance of units		$ 13,600		$ 13,600
General partner ownership interest		2.00%		2.00%
Series B Preferred Limited Partner [Member]
Business Acquisition [Line Items]
Issuance of units (units)		15,400,000		15,400,000
Net proceeds from issuance of units		$ 371,800
Logistics Notes Due 2027 [Member]
Business Acquisition [Line Items]
Senior notes issued		$ 550,000		$ 550,000
Stated interest rate		5.625%		5.625%

XML

ACQUISITIONS Table 2 (Details) - Navigator Acquisition [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Business Acquisition [Line Items]
Revenues	$ 439,933	$ 443,314	$ 937,317	$ 852,169
Net income	$ 21,211	$ 33,378	$ 63,659	$ 70,118
Basic net income per common unit	$ (0.03)	$ 0.15	$ 0.16	$ 0.34
Diluted net income per common unit	$ (0.03)	$ 0.15	$ 0.16	$ 0.34

XML

ACQUISITIONS Narrative 3 (Details) $ in Millions	May 04, 2017 USD ($)
Navigator Acquisition [Member]
Business Acquisition [Line Items]
Business acquisition, transaction costs	$ 14.0

XML

DEBT Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Debt Instrument [Line Items]
Proceeds from note offering, net of issuance costs		$ 543,313	$ 0
Long-term debt	$ 3,476,939	3,476,939		$ 3,014,364
Current portion of long-term debt	$ 403,075	$ 403,075		$ 0
Logistics Notes Due 2027 [Member]
Debt Instrument [Line Items]
Stated interest rate	5.625%	5.625%
Proceeds from note offering, net of issuance costs	$ 543,300
Senior notes issued	550,000	$ 550,000
Redemption description		If we undergo a change of control, followed by a ratings decline within 60 days of a change of control, each holder of the notes may require us to repurchase all or a portion of its notes at a price equal to 101% of the principal amount of the notes, plus any accrued and unpaid interest to the date of repurchase.
$1.5 billion revolving credit agreement
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,500,000	$ 1,500,000
Term		5 years
Line of credit facility, decrease, net		$ 74,200
Interest rate at period end	2.80%	2.80%
Long-term debt	$ 764,800	$ 764,800
Covenant terms		our consolidated debt coverage ratio (as defined in the Revolving Credit Agreement) could not exceed 5.50-to-1.00 as a result of the Navigator Acquisition.
Letters of credit issued	7,700	$ 7,700
Current remaining borrowing capacity	727,500	727,500
GoZone Bonds
Debt Instrument [Line Items]
Long-term debt	$ 365,400	$ 365,400
Interest rate at period end	0.90%	0.90%
Amount received from trustee		$ 0
Amount remaining in trust	$ 42,400	42,400
Receivables Financing Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity	125,000	$ 125,000
Borrowing capacity, description		The amount available for borrowing is based on the availability of eligible receivables and other customary factors and conditions.
Maturity date description		The Securitization Program has an initial termination date of June 15, 2018, with the option to renew for additional 364-day periods thereafter.
Collateral amount	81,700	$ 81,700
Current portion of long-term debt	$ 53,300	$ 53,300

XML

COMMITMENTS AND CONTINGENCIES Narrative 1 (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Loss contingency accrual, at carrying value	$ 1.7	$ 0.0

XML

FAIR VALUE MEASUREMENTS Table 1 (Details) - Recurring Fair Value Measurements - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets:
Total assets	$ 5,249	$ 3,020
Liabilities:
Total liabilities	(12,741)	(10,491)
Fair Value Level 1
Assets:
Total assets	5,249	1,551
Liabilities:
Total liabilities	(3,482)	(6,464)
Fair Value Level 2
Assets:
Total assets	0	1,469
Liabilities:
Total liabilities	(9,259)	(2,797)
Fair Value Level 3
Assets:
Total assets	0	0
Liabilities:
Total liabilities	0	(1,230)
Other current assets
Assets:
Product imbalances - asset	5,249	1,551
Commodity derivatives - assets		155
Other current assets | Fair Value Level 1
Assets:
Product imbalances - asset	5,249	1,551
Commodity derivatives - assets		0
Other current assets | Fair Value Level 2
Assets:
Product imbalances - asset	0	0
Commodity derivatives - assets		155
Other current assets | Fair Value Level 3
Assets:
Product imbalances - asset	0	0
Commodity derivatives - assets		0
Other long-term assets, net
Assets:
Interest rate swaps - assets		1,314
Other long-term assets, net | Fair Value Level 1
Assets:
Interest rate swaps - assets		0
Other long-term assets, net | Fair Value Level 2
Assets:
Interest rate swaps - assets		1,314
Other long-term assets, net | Fair Value Level 3
Assets:
Interest rate swaps - assets		0
Accrued liabilities
Liabilities:
Product imbalances - liability	(3,031)	(1,577)
Commodity derivatives - liabilities	(451)	(5,052)
Interest rate swaps - liabilities	(6,392)
Accrued liabilities | Fair Value Level 1
Liabilities:
Product imbalances - liability	(3,031)	(1,577)
Commodity derivatives - liabilities	(451)	(4,887)
Interest rate swaps - liabilities	0
Accrued liabilities | Fair Value Level 2
Liabilities:
Product imbalances - liability	0	0
Commodity derivatives - liabilities	0	(165)
Interest rate swaps - liabilities	(6,392)
Accrued liabilities | Fair Value Level 3
Liabilities:
Product imbalances - liability	0	0
Commodity derivatives - liabilities	0	0
Interest rate swaps - liabilities	0
Other long-term liabilities
Liabilities:
Guarantee liability		(1,230)
Interest rate swaps - liabilities	(2,867)	(2,632)
Other long-term liabilities | Fair Value Level 1
Liabilities:
Guarantee liability		0
Interest rate swaps - liabilities	0	0
Other long-term liabilities | Fair Value Level 2
Liabilities:
Guarantee liability		0
Interest rate swaps - liabilities	(2,867)	(2,632)
Other long-term liabilities | Fair Value Level 3
Liabilities:
Guarantee liability		(1,230)
Interest rate swaps - liabilities	$ 0	$ 0

XML

FAIR VALUE MEASUREMENTS Narrative (Details) $ in Millions	Dec. 31, 2016 USD ($)	Feb. 26, 2014
Axeon [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Maximum amount of guarantees	$ 125.0
Axeon [Member] | Financial Guarantee [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Amount of guarantees provided	$ 54.1
Number of guarantees with unlimited exposure	1
Axeon [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Ownership percentage of entity sold		50.00%

XML

FAIR VALUE MEASUREMENTS Table 2 (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value and Carrying Value of Debt and Note Receivable from Counterparty [Line Items]
Fair value, long-term debt	$ 3,591,708	$ 3,084,762
Carrying amount, long-term debt	$ 3,476,939	3,014,364
Axeon [Member]
Fair Value and Carrying Value of Debt and Note Receivable from Counterparty [Line Items]
Fair value, Axeon Term Loan		110,000
Carrying amount, Axeon Term Loan		$ 110,000

XML

FAIR VALUE MEASUREMENTS Narrative 2 (Details) - USD ($) $ in Thousands		6 Months Ended
	Feb. 22, 2017	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Cash collection on Axeon Term Loan		$ 110,000	$ 0
Axeon [Member]
Financing Receivable, Impaired [Line Items]
Cash collection on Axeon Term Loan	$ 110,000
Carrying amount, Axeon Term Loan				$ 110,000

XML

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Narrative (Details) bbl in Millions			6 Months Ended
	Jun. 30, 2017 USD ($) bbl	Dec. 31, 2016 USD ($) bbl	Jun. 30, 2017 USD ($)
Derivative [Line Items]
Margin deposit	$ 300,000	$ 1,800,000	$ 300,000
Interest rate swaps | Cash Flow Hedges
Derivative [Line Items]
Interest rate swaps interest rate received			receive a rate based on the three-month USD LIBOR
Notional amount of forward-starting interest rate swaps	$ 600,000,000	$ 600,000,000	$ 600,000,000
Commodity contracts
Derivative [Line Items]
Notional amount of commodity contracts, volume (in barrels) | bbl	2.3	4.7

XML

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Table 1 (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value
Asset Derivatives	$ 1,549	$ 10,851
Liability Derivatives	(11,259)	(17,066)
Designated as Hedging Instruments
Derivatives, Fair Value
Asset Derivatives	162	1,458
Liability Derivatives	(9,447)	(6,198)
Designated as Hedging Instruments | Commodity contracts | Accrued liabilities
Derivatives, Fair Value
Asset Derivatives	162	144
Liability Derivatives	(188)	(3,566)
Designated as Hedging Instruments | Interest rate swaps | Other long-term assets, net
Derivatives, Fair Value
Asset Derivatives	0	1,314
Liability Derivatives	0	0
Designated as Hedging Instruments | Interest rate swaps | Accrued liabilities
Derivatives, Fair Value
Asset Derivatives	0	0
Liability Derivatives	(6,392)	0
Designated as Hedging Instruments | Interest rate swaps | Other long-term liabilities
Derivatives, Fair Value
Asset Derivatives	0	0
Liability Derivatives	(2,867)	(2,632)
Not Designated as Hedging Instruments
Derivatives, Fair Value
Asset Derivatives	1,387	9,393
Liability Derivatives	(1,812)	(10,868)
Not Designated as Hedging Instruments | Commodity contracts | Other current assets
Derivatives, Fair Value
Asset Derivatives	0	265
Liability Derivatives	0	(110)
Not Designated as Hedging Instruments | Commodity contracts | Accrued liabilities
Derivatives, Fair Value
Asset Derivatives	1,387	9,128
Liability Derivatives	$ (1,812)	$ (10,758)

XML

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Table 2 (Details) - Commodity contracts - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Derivative Assets and Liabilities Eligible for Offset, Net [Line Items]
Net amounts of assets presented in the consolidated balance sheets	$ 0	$ 155
Net amounts of liabilities presented in the consolidated balance sheets	$ (451)	$ (5,052)

XML

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Table 3 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments, Gain (Loss)
Gain (loss) to be reclassified during next 12 months, forward-starting interest rate swaps	$ (5,800)		$ (5,800)
Designated as Hedging Instruments | Fair Value Hedges | Commodity contracts | Cost of product sales
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income on derivative	364	$ (5,792)	2,461	$ (6,804)
Gain (loss) recognized in income on hedged item	(313)	6,938	(2,147)	9,804
Gain (loss) recognized in income for ineffective portion	51	1,146	314	3,000
Designated as Hedging Instruments | Cash Flow Hedges | Interest rate swaps | Other comprehensive income
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in other comprehensive income on derivative (effective portion)	(7,980)	(20,200)	(7,941)	(50,178)
Designated as Hedging Instruments | Cash Flow Hedges | Interest rate swaps | Interest expense, net
Derivative Instruments, Gain (Loss)
Gain (loss) reclassified from AOCI into interest expense, net (effective portion)	(1,729)	(2,158)	(3,528)	(4,380)
Not Designated as Hedging Instruments | Commodity contracts | Cost of product sales
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income on derivative	$ 52	$ (724)	$ (86)	$ (4)

XML

RELATED PARTY TRANSACTIONS Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Related Party Transactions [Abstract]
Related party operating expenses	$ 0	$ 0	$ 0	$ 21,681
Related party general and administrative expenses	$ 0	$ 0	$ 0	$ 10,493
Administrative fees, description			The Amended GP Services Agreement provides that we will furnish administrative services necessary to conduct the business of NuStar GP Holdings. NuStar GP Holdings will compensate us for these services through an annual fee of $1.0 million, subject to adjustment based on the annual merit increase percentage applicable to our employees for the most recently completed fiscal year and for changes in level of service. The Amended GP Services Agreement will terminate on March 1, 2020 and will automatically renew for successive two-year terms, unless terminated by either party.

XML

EMPLOYEE BENEFIT PLANS Table 1 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Pension Plans (The Pension Plan and Excess Pension Plan)
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2,239	$ 1,926	$ 4,478	$ 3,852
Interest cost	1,127	1,006	2,254	2,012
Expected return on assets	(1,602)	(1,351)	(3,205)	(2,703)
Amortization of prior service credit	(516)	(516)	(1,031)	(1,033)
Amortization of net loss	371	273	742	546
Net periodic benefit cost (income)	1,619	1,338	3,238	2,674
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	113	105	226	210
Interest cost	108	100	216	200
Expected return on assets	0	0	0	0
Amortization of prior service credit	(286)	(286)	(572)	(572)
Amortization of net loss	48	45	96	90
Net periodic benefit cost (income)	$ (17)	$ (36)	$ (34)	$ (72)

XML

PARTNERS' EQUITY Narrative 1 (Details) $ in Millions	3 Months Ended
	Jun. 30, 2017 USD ($)
Partners' Capital Notes [Abstract]
Incentive distribution waiver	$ 22.0
Number of periods covered by waiver	10

XML

PARTNERS' EQUITY Narrative 2 (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Apr. 18, 2017
Class of Stock [Line Items]
Net proceeds from issuance of units			$ 1,029,257
General partner ownership interest	2.00%	2.00%	2.00%	2.00%
Common Limited Partner [Member]
Class of Stock [Line Items]
Issuance of units (units)	14,375,000		14,375,000
Units issued, price per unit					$ 46.35
Proceeds from common unit issuance including general partner contribution	$ 657,500
General Partner [Member]
Class of Stock [Line Items]
Net proceeds from issuance of units	$ 13,600		$ 13,600
General partner ownership interest	2.00%		2.00%

XML

PARTNERS' EQUITY Narrative 3 (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Apr. 28, 2017
Class of Stock [Line Items]
Net proceeds from issuance of units		$ 1,029,257
Series B Preferred Limited Partner [Member]
Class of Stock [Line Items]
Issuance of units (units)	15,400,000	15,400,000
Preferred units distribution percentage	7.625%
Preferred units liquidation preference	$ 25.00	$ 25.00
Per unit distribution	$ 1.90625
Units issued, price per unit			$ 25.00
Net proceeds from issuance of units	$ 371,800
Preferred unit, distribution payment rate, variable description	three-month LIBOR plus a spread of 5.643%
Preferred units, description	At any time on or after June 15, 2022, we may redeem our Series B Preferred Units, in whole or in part, at a redemption price of $25.00 per unit plus an amount equal to all accumulated and unpaid distributions to, but not including, the date of redemption, whether or not declared. We may also redeem the Series B Preferred Units upon the occurrence of certain rating events or a change of control as defined in our partnership agreement. In the case of the latter instance, if we choose not to redeem the Series B Preferred Units, the preferred unitholders may have the ability to convert the Series B Preferred Units to common units at the then applicable conversion rate. Holders of the Series B Preferred Units have no voting rights except for certain exceptions set forth in our partnership agreement.

XML

PARTNERS' EQUITY Table 1 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance as of January 1, 2017			$ 1,611,617
Net income	$ 26,250	$ 52,517	84,190	$ 109,918
Unit-based compensation expense			2,564
Other comprehensive income			4,894
Distributions to partners			(230,902)
Issuance of preferred and common units, including contribution from general partner			1,029,257
Other			(571)
Balance as of June 30, 2017	$ 2,501,049		$ 2,501,049

XML

PARTNERS' EQUITY Table 2 (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2017	$ (94,177)
Other comprehensive income (loss)	4,894
Balance as of June 30, 2017	(89,283)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2017	(69,069)
Other comprehensive income (loss) before reclassification adjustments	10,072
Other comprehensive income (loss)	10,072
Balance as of June 30, 2017	(58,997)
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2017	(22,258)
Other comprehensive income (loss) before reclassification adjustments	(7,941)
Other comprehensive income (loss)	(4,413)
Balance as of June 30, 2017	(26,671)
Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2017	(2,850)
Other comprehensive income (loss) before reclassification adjustments	0
Other comprehensive income (loss)	(765)
Balance as of June 30, 2017	(3,615)
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2017	(94,177)
Other comprehensive income (loss) before reclassification adjustments	2,131
Other comprehensive income (loss)	4,894
Balance as of June 30, 2017	(89,283)
Operating expense | Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
Operating expense | Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
Operating expense | Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	(572)
Operating expense | Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	(572)
General and administrative expense | Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
General and administrative expense | Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
General and administrative expense | Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	(193)
General and administrative expense | Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	(193)
Interest expense, net | Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
Interest expense, net | Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	3,528
Interest expense, net | Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
Interest expense, net | Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	$ 3,528

XML

PARTNERS' EQUITY Narrative 4 (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
General partner ownership interest	2.00%	2.00%	2.00%	2.00%
Common Limited Partner [Member]
Common unitholders ownership interest			98.00%
General Partner [Member]
General partner ownership interest	2.00%		2.00%

XML

PARTNERS' EQUITY Table 3 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net Income Allocation [Abstract]
Net income attributable to NuStar Energy L.P.	$ 26,250	$ 52,517	$ 84,190	$ 109,918
Less preferred limited partner interest	9,950	0	14,763	0
Less general partner incentive distribution	10,912	10,805	23,824	21,610
Net income after general partner incentive distribution and preferred limited partner interest	$ 5,388	$ 41,712	$ 45,603	$ 88,308
General partner interest allocation	2.00%	2.00%	2.00%	2.00%
General partner interest allocation of net income	$ 108	$ 834	$ 912	$ 1,766
General partner incentive distribution	10,912	10,805	23,824	21,610
Net income applicable to general partner	$ 11,020	$ 11,639	$ 24,736	$ 23,376

XML

PARTNERS' EQUITY Table 4 (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Distributions Made to Common Limited Partners and General Partner [Line Items]
General partner interest	$ 2,302			$ 1,961	$ 4,645	$ 3,922
General partner incentive distribution	10,912			10,805	23,824	21,610
Total general partner distribution	13,214			12,766	28,469	25,532
Common limited partners’ distribution	101,869			85,285	203,782	170,570
Total cash distributions applicable to common limited partners and general partner	$ 115,083	$ 117,168	$ 98,971	$ 98,051	$ 232,251	$ 196,102
Common Limited Partner [Member]
Distributions Made to Common Limited Partners and General Partner [Line Items]
Cash distributions per unit applicable to common limited partners	$ 1.095	$ 1.095	$ 1.095	$ 1.095	$ 2.190	$ 2.190

XML

PARTNERS' EQUITY Table 5 (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended				6 Months Ended
	Jul. 28, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Distribution Made to General and Common Limited Partners [Line Items]
Cash distributions applicable to common limited partners and general partner (distribution earned)		$ 115,083	$ 117,168	$ 98,971	$ 98,051	$ 232,251	$ 196,102
Distribution date of record (distribution earned)		Aug. 07, 2017	May 08, 2017	Feb. 08, 2017
Distribution payment date (distribution earned)		Aug. 11, 2017	May 12, 2017	Feb. 13, 2017
Subsequent Event [Member]
Distribution Made to General and Common Limited Partners [Line Items]
Distribution announcement date (distribution earned)	Jul. 28, 2017
Common Limited Partner [Member]
Distribution Made to General and Common Limited Partners [Line Items]
Cash distributions per unit applicable to common limited partners		$ 1.095	$ 1.095	$ 1.095	$ 1.095	$ 2.190	$ 2.190

XML

PARTNERS' EQUITY Table 6 (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Jul. 28, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Distribution Made to Limited Partner [Line Items]
Distribution date of record			Aug. 07, 2017	May 08, 2017	Feb. 08, 2017
Distribution payment date			Aug. 11, 2017	May 12, 2017	Feb. 13, 2017
Series A Preferred Limited Partner [Member]
Distribution Made to Limited Partner [Line Items]
Preferred unit distribution paid			$ 0.53125	$ 0.64930556
Cash distributions applicable to preferred limited partners			$ 4,813	$ 5,883
Distribution date of record			Jun. 01, 2017	Mar. 01, 2017
Distribution payment date			Jun. 15, 2017	Mar. 15, 2017
Subsequent Event [Member]
Distribution Made to Limited Partner [Line Items]
Distribution announcement date (distribution earned)	Jul. 28, 2017
Subsequent Event [Member] | Series A Preferred Limited Partner [Member]
Distribution Made to Limited Partner [Line Items]
Preferred unit distribution declared		$ 0.53125
Cash distributions applicable to preferred limited partners		$ 4,813
Distribution date of record		Sep. 01, 2017
Distribution payment date		Sep. 15, 2017
Subsequent Event [Member] | Series B Preferred Limited Partner [Member]
Distribution Made to Limited Partner [Line Items]
Preferred unit distribution declared		$ 0.725434028
Cash distributions applicable to preferred limited partners		$ 11,172
Distribution date of record		Sep. 01, 2017
Distribution payment date		Sep. 15, 2017

XML

NET INCOME PER COMMON UNIT Table (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net income attributable to NuStar Energy L.P.	$ 26,250	$ 52,517	$ 84,190	$ 109,918
Less: Distributions to general partner (including incentive distribution rights)	13,214	12,766	28,469	25,532
Common limited partners’ distribution	101,869	85,285	203,782	170,570
Less: Distributions to preferred limited partners	9,950	0	14,763	0
Less: Distribution equivalents rights to restricted units	712	657	1,427	1,319
Distributions in excess of earnings	(99,495)	(46,191)	(164,251)	(87,503)
Net income attributable to common units:
Common limited partners’ distribution	101,869	85,285	203,782	170,570
Allocation of distributions in excess of earnings	(97,505)	(45,267)	(160,966)	(85,752)
Total	$ 4,364	$ 40,018	$ 42,816	$ 84,818
Basic weighted-average common units outstanding	90,345,469	77,886,219	84,526,506	77,886,148
Diluted common units outstanding:
Basic weighted-average common units outstanding	90,345,469	77,886,219	84,526,506	77,886,148
Effect of dilutive potential common units	0	53,060	0	57,554
Diluted weighted-average common units outstanding	90,345,469	77,939,279	84,526,506	77,943,702
Basic net income per common unit	$ 0.05	$ 0.52	$ 0.51	$ 1.09
Diluted net income per common unit	$ 0.05	$ 0.52	$ 0.51	$ 1.09

XML

STATEMENTS OF CASH FLOWS Table 1 (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Decrease (increase) in current assets:
Accounts receivable	$ 48,875	$ (572)
Receivable from related party	231	0
Inventories	13,005	99
Other current assets	(2,388)	5,064
Increase (decrease) in current liabilities:
Accounts payable	(57,822)	(4,717)
Payable to related party, net	0	697
Accrued interest payable	6,234	(393)
Accrued liabilities	(14,703)	(12,321)
Taxes other than income tax	(3,094)	(348)
Income tax payable	(5,682)	(2,783)
Changes in current assets and current liabilities	$ (15,344)	$ (15,274)

XML

STATEMENTS OF CASH FLOWS Table 2 (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Statement of Cash Flows [Abstract]
Cash paid for interest, net of amount capitalized	$ 70,119	$ 70,280
Cash paid for income taxes, net of tax refunds received	$ 9,556	$ 8,826

XML

SEGMENT INFORMATION Table 1 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Revenues	$ 435,488	$ 437,804	$ 922,918	$ 843,507
Operating income:
General and administrative expenses	33,604	22,657	58,199	46,442
Other depreciation and amortization expense	67,601	53,651	124,465	106,793
Operating income	73,404	91,217	170,543	185,782
Pipeline Segment
Revenues:
Revenues	126,740	121,575	247,980	240,448
Storage Segment
Revenues:
Revenues	158,559	151,874	305,990	304,273
Storage Segment | Third Party Revenue [Member]
Revenues:
Revenues	154,830	146,367	298,318	292,751
Storage Segment | Intersegment Revenue [Member]
Revenues:
Revenues	3,729	5,507	7,672	11,522
Fuels Marketing Segment
Revenues:
Revenues	153,918	169,862	376,620	310,308
Operating Segments [Member]
Operating income:
Operating income	109,207	116,008	233,134	236,513
Operating Segments [Member] | Pipeline Segment
Operating income:
Operating income	52,868	63,552	117,896	127,817
Operating Segments [Member] | Storage Segment
Operating income:
Operating income	56,049	51,063	109,808	108,076
Operating Segments [Member] | Fuels Marketing Segment
Operating income:
Operating income	289	1,392	5,429	619
Intersegment Eliminations [Member]
Revenues:
Revenues	(3,729)	(5,507)	(7,672)	(11,522)
Operating income:
Operating income	1	1	1	1
Corporate, Non-Segment [Member]
Operating income:
General and administrative expenses	33,604	22,657	58,199	46,442
Other depreciation and amortization expense	$ 2,199	$ 2,134	$ 4,392	$ 4,289

XML

SEGMENT INFORMATION Table 2 (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Segment Information
Total assets	$ 6,359,324	$ 5,030,545
Operating Segments [Member]
Segment Information
Total assets	6,167,445	4,715,566
Operating Segments [Member] | Pipeline Segment
Segment Information
Total assets	3,458,700	2,024,633
Operating Segments [Member] | Storage Segment
Segment Information
Total assets	2,605,122	2,522,586
Operating Segments [Member] | Fuels Marketing Segment
Segment Information
Total assets	103,623	168,347
Operating Segments [Member] | Other partnership assets
Segment Information
Total assets	$ 191,879	$ 314,979

XML

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 1 (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 29,191	$ 35,942	$ 103,019	$ 118,862
Receivables, net	147,634	170,610
Inventories	25,772	37,945
Other current assets	28,265	132,686
Intercompany receivable	0	0
Total current assets	230,862	377,183
Property, plant and equipment, net	4,147,333	3,722,283
Intangible assets, net	857,616	127,083
Goodwill	1,023,359	696,637
Investment in wholly owned subsidiaries	0	0
Deferred income tax asset	1,359	2,051
Other long-term assets, net	98,795	105,308
Total assets	6,359,324	5,030,545
Liabilities and Partners' Equity
Accounts payable	92,668	118,686
Short-term debt	45,000	54,000
Current portion of long-term debt	403,075	0
Accrued interest payable	40,232	34,030
Accrued liabilities	55,986	60,485
Taxes other than income tax	16,709	15,685
Income tax payable	847	6,510
Intercompany payable	0	0
Total current liabilities	654,517	289,396
Long-term debt	3,073,864	3,014,364
Deferred income tax liability	22,863	22,204
Other long-term liabilities	107,031	92,964
Total partners' equity	2,501,049	1,611,617
Total liabilities and partners' equity	6,359,324	5,030,545
Eliminations
Assets
Cash and cash equivalents	0	0	0	0
Receivables, net	0	0
Inventories	0	0
Other current assets	(36)	0
Intercompany receivable	(3,088,723)	(1,366,200)
Total current assets	(3,088,759)	(1,366,200)
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Goodwill	0	0
Investment in wholly owned subsidiaries	(5,227,308)	(4,095,880)
Deferred income tax asset	0	0
Other long-term assets, net	0	0
Total assets	(8,316,067)	(5,462,080)
Liabilities and Partners' Equity
Accounts payable	0	0
Short-term debt	0	0
Current portion of long-term debt	0
Accrued interest payable	0	0
Accrued liabilities	0	0
Taxes other than income tax	0	0
Income tax payable	(36)	0
Intercompany payable	(3,088,723)	(1,366,200)
Total current liabilities	(3,088,759)	(1,366,200)
Long-term debt	0	0
Deferred income tax liability	0	0
Other long-term liabilities	0	0
Total partners' equity	(5,227,308)	(4,095,880)
Total liabilities and partners' equity	(8,316,067)	(5,462,080)
NuStar Energy
Assets
Cash and cash equivalents	867	870	663	885
Receivables, net	0	0
Inventories	0	0
Other current assets	69	61
Intercompany receivable	0	0
Total current assets	936	931
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Goodwill	0	0
Investment in wholly owned subsidiaries	3,085,078	1,964,736
Deferred income tax asset	0	0
Other long-term assets, net	378	1,255
Total assets	3,086,392	1,966,922
Liabilities and Partners' Equity
Accounts payable	6,330	2,436
Short-term debt	0	0
Current portion of long-term debt	0
Accrued interest payable	0	0
Accrued liabilities	720	1,070
Taxes other than income tax	8	125
Income tax payable	0	0
Intercompany payable	489,002	257,497
Total current liabilities	496,060	261,128
Long-term debt	0	0
Deferred income tax liability	0	0
Other long-term liabilities	0	0
Total partners' equity	2,590,332	1,705,794
Total liabilities and partners' equity	3,086,392	1,966,922
NuStar Logistics
Assets
Cash and cash equivalents	64	5	3	4
Receivables, net	93	3,040
Inventories	1,977	2,216
Other current assets	12,623	120,350
Intercompany receivable	3,088,723	1,308,415
Total current assets	3,103,480	1,434,026
Property, plant and equipment, net	1,911,890	1,935,172
Intangible assets, net	63,163	71,033
Goodwill	149,453	149,453
Investment in wholly owned subsidiaries	28,711	34,778
Deferred income tax asset	0	0
Other long-term assets, net	60,588	63,586
Total assets	5,317,285	3,688,048
Liabilities and Partners' Equity
Accounts payable	21,064	24,272
Short-term debt	45,000	54,000
Current portion of long-term debt	350,021
Accrued interest payable	40,206	34,008
Accrued liabilities	19,929	7,118
Taxes other than income tax	5,867	6,854
Income tax payable	0	1,326
Intercompany payable	0	0
Total current liabilities	482,087	127,578
Long-term debt	3,073,864	2,956,338
Deferred income tax liability	1,862	1,862
Other long-term liabilities	43,538	34,358
Total partners' equity	1,715,934	567,912
Total liabilities and partners' equity	5,317,285	3,688,048
NuPOP
Assets
Cash and cash equivalents	0	0	0	0
Receivables, net	0	0
Inventories	3,254	2,005
Other current assets	5,475	1,829
Intercompany receivable	0	0
Total current assets	8,729	3,834
Property, plant and equipment, net	578,504	589,139
Intangible assets, net	0	0
Goodwill	170,652	170,652
Investment in wholly owned subsidiaries	1,270,678	1,221,717
Deferred income tax asset	0	0
Other long-term assets, net	28,039	28,587
Total assets	2,056,602	2,013,929
Liabilities and Partners' Equity
Accounts payable	5,573	7,124
Short-term debt	0	0
Current portion of long-term debt	0
Accrued interest payable	0	0
Accrued liabilities	11,434	10,766
Taxes other than income tax	3,819	3,253
Income tax payable	2	5
Intercompany payable	1,182,082	1,108,703
Total current liabilities	1,202,910	1,129,851
Long-term debt	0	0
Deferred income tax liability	13	13
Other long-term liabilities	10,973	9,436
Total partners' equity	842,706	874,629
Total liabilities and partners' equity	2,056,602	2,013,929
Non-Guarantor Subsidiaries
Assets
Cash and cash equivalents	28,260	35,067	$ 102,353	$ 117,973
Receivables, net	147,541	167,570
Inventories	20,541	33,724
Other current assets	10,134	10,446
Intercompany receivable	0	57,785
Total current assets	206,476	304,592
Property, plant and equipment, net	1,656,939	1,197,972
Intangible assets, net	794,453	56,050
Goodwill	703,254	376,532
Investment in wholly owned subsidiaries	842,841	874,649
Deferred income tax asset	1,359	2,051
Other long-term assets, net	9,790	11,880
Total assets	4,215,112	2,823,726
Liabilities and Partners' Equity
Accounts payable	59,701	84,854
Short-term debt	0	0
Current portion of long-term debt	53,054
Accrued interest payable	26	22
Accrued liabilities	23,903	41,531
Taxes other than income tax	7,015	5,453
Income tax payable	881	5,179
Intercompany payable	1,417,639	0
Total current liabilities	1,562,219	137,039
Long-term debt	0	58,026
Deferred income tax liability	20,988	20,329
Other long-term liabilities	52,520	49,170
Total partners' equity	2,579,385	2,559,162
Total liabilities and partners' equity	$ 4,215,112	$ 2,823,726

XML

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 2 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Condensed Financial Statements, Captions [Line Items]
Revenues	$ 435,488	$ 437,804	$ 922,918	$ 843,507
Costs and expenses	362,084	346,587	752,375	657,725
Operating (loss) income	73,404	91,217	170,543	185,782
Equity in earnings (loss) of subsidiaries	0	0	0	0
Interest (expense) income, net	(45,612)	(34,229)	(82,026)	(68,352)
Other income (expense), net	88	(201)	228	(372)
Income before income tax expense	27,880	56,787	88,745	117,058
Income tax expense (benefit)	1,630	4,270	4,555	7,140
Net income	26,250	52,517	84,190	109,918
Comprehensive income (loss)	27,381	29,178	89,084	71,801
Eliminations
Condensed Financial Statements, Captions [Line Items]
Revenues	(347)	(376)	(634)	(712)
Costs and expenses	(347)	(376)	(634)	(712)
Operating (loss) income	0	0	0	0
Equity in earnings (loss) of subsidiaries	(76,442)	(115,243)	(209,565)	(239,076)
Interest (expense) income, net	0	4,351	0	0
Other income (expense), net	0	0	0	0
Income before income tax expense	(76,442)	(110,892)	(209,565)	(239,076)
Income tax expense (benefit)	0	0	0	0
Net income	(76,442)	(110,892)	(209,565)	(239,076)
Comprehensive income (loss)	(76,442)	(110,892)	(209,565)	(239,076)
NuStar Energy
Condensed Financial Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and expenses	486	434	995	952
Operating (loss) income	(486)	(434)	(995)	(952)
Equity in earnings (loss) of subsidiaries	26,732	52,929	85,177	110,851
Interest (expense) income, net	4	0	8	0
Other income (expense), net	0	22	0	22
Income before income tax expense	26,250	52,517	84,190	109,921
Income tax expense (benefit)	0	0	0	3
Net income	26,250	52,517	84,190	109,918
Comprehensive income (loss)	26,250	52,517	84,190	109,918
NuStar Logistics
Condensed Financial Statements, Captions [Line Items]
Revenues	128,895	125,562	252,524	252,140
Costs and expenses	83,096	73,505	159,418	142,396
Operating (loss) income	45,799	52,057	93,106	109,744
Equity in earnings (loss) of subsidiaries	(7,177)	(2,203)	(6,067)	(5,318)
Interest (expense) income, net	(46,390)	(41,155)	(83,304)	(80,787)
Other income (expense), net	62	21	83	22
Income before income tax expense	(7,706)	8,720	3,818	23,661
Income tax expense (benefit)	(365)	347	(34)	693
Net income	(7,341)	8,373	3,852	22,968
Comprehensive income (loss)	(13,592)	(9,669)	(561)	(22,830)
NuPOP
Condensed Financial Statements, Captions [Line Items]
Revenues	50,577	58,129	102,818	106,114
Costs and expenses	37,781	35,986	67,587	67,001
Operating (loss) income	12,796	22,143	35,231	39,113
Equity in earnings (loss) of subsidiaries	22,746	20,171	48,961	45,454
Interest (expense) income, net	(1,401)	2,026	(2,705)	3,534
Other income (expense), net	3	7	9	(10)
Income before income tax expense	34,144	44,347	81,496	88,091
Income tax expense (benefit)	1	3	2	5
Net income	34,143	44,344	81,494	88,086
Comprehensive income (loss)	34,143	44,344	81,494	88,086
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenues	256,363	254,489	568,210	485,965
Costs and expenses	241,068	237,038	525,009	448,088
Operating (loss) income	15,295	17,451	43,201	37,877
Equity in earnings (loss) of subsidiaries	34,141	44,346	81,494	88,089
Interest (expense) income, net	2,175	549	3,975	8,901
Other income (expense), net	23	(251)	136	(406)
Income before income tax expense	51,634	62,095	128,806	134,461
Income tax expense (benefit)	1,994	3,920	4,587	6,439
Net income	49,640	58,175	124,219	128,022
Comprehensive income (loss)	$ 57,022	$ 52,878	$ 133,526	$ 135,703

XML

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 3 (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net cash provided by operating activities	$ 208,988	$ 215,033
Cash flows from investing activities:
Capital expenditures	(108,849)	(95,361)
Change in accounts payable related to capital expenditures	6,851	(12,674)
Acquisitions	(1,476,719)	0
Proceeds from sale or disposition of assets	1,966	0
Investment in subsidiaries	0
Proceeds from Axeon term loan	110,000	0
Net cash provided by (used in) investing activities	(1,466,751)	(108,035)
Cash flows from financing activities:
Debt borrowings	1,602,161	627,904
Debt repayments	(1,696,239)	(547,192)
Note offering, net of issuance costs	543,313	0
Issuance of preferred units, net of issuance costs	371,802	0
Issuance of common units, net of issuance costs	643,858	0
General partner contribution	13,597	0
Distributions to preferred unitholders	(10,696)	0
Distributions to common unitholders and general partner	(216,139)	(196,102)
Contributions from (distributions to) affiliates	0	0
Net intercompany activity	0	0
Other, net	(1,294)	(11,840)
Net cash provided by (used in) financing activities	1,250,363	(127,230)
Effect of foreign exchange rate changes on cash	649	4,389
Net increase (decrease) in cash and cash equivalents	(6,751)	(15,843)
Cash and cash equivalents as of the beginning of the period	35,942	118,862
Cash and cash equivalents as of the end of the period	29,191	103,019
Eliminations
Cash flows from operating activities:
Net cash provided by operating activities	(340,263)	(318,674)
Cash flows from investing activities:
Capital expenditures	0	0
Change in accounts payable related to capital expenditures	0	0
Acquisitions	0
Proceeds from sale or disposition of assets	0
Investment in subsidiaries	1,262,126
Proceeds from Axeon term loan	0
Net cash provided by (used in) investing activities	1,262,126	0
Cash flows from financing activities:
Debt borrowings	0	0
Debt repayments	0	0
Note offering, net of issuance costs	0
Issuance of preferred units, net of issuance costs	0
Issuance of common units, net of issuance costs	0
General partner contribution	0
Distributions to preferred unitholders	16,044
Distributions to common unitholders and general partner	324,219	294,164
Contributions from (distributions to) affiliates	(1,262,126)	24,510
Net intercompany activity	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	(921,863)	318,674
Effect of foreign exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents as of the beginning of the period	0	0
Cash and cash equivalents as of the end of the period	0	0
NuStar Energy
Cash flows from operating activities:
Net cash provided by operating activities	225,566	194,793
Cash flows from investing activities:
Capital expenditures	0	0
Change in accounts payable related to capital expenditures	0	0
Acquisitions	0
Proceeds from sale or disposition of assets	0
Investment in subsidiaries	(1,262,000)
Proceeds from Axeon term loan	0
Net cash provided by (used in) investing activities	(1,262,000)	0
Cash flows from financing activities:
Debt borrowings	0	0
Debt repayments	0	0
Note offering, net of issuance costs	0
Issuance of preferred units, net of issuance costs	371,802
Issuance of common units, net of issuance costs	643,858
General partner contribution	13,597
Distributions to preferred unitholders	(10,696)
Distributions to common unitholders and general partner	(216,139)	(196,102)
Contributions from (distributions to) affiliates	0	0
Net intercompany activity	236,622	1,755
Other, net	(2,613)	(668)
Net cash provided by (used in) financing activities	1,036,431	(195,015)
Effect of foreign exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	(3)	(222)
Cash and cash equivalents as of the beginning of the period	870	885
Cash and cash equivalents as of the end of the period	867	663
NuStar Logistics
Cash flows from operating activities:
Net cash provided by operating activities	85,203	58,160
Cash flows from investing activities:
Capital expenditures	(19,639)	(47,672)
Change in accounts payable related to capital expenditures	(2,823)	(12,230)
Acquisitions	0
Proceeds from sale or disposition of assets	1,898
Investment in subsidiaries	0
Proceeds from Axeon term loan	110,000
Net cash provided by (used in) investing activities	89,436	(59,902)
Cash flows from financing activities:
Debt borrowings	1,536,761	610,504
Debt repayments	(1,625,739)	(532,992)
Note offering, net of issuance costs	543,313
Issuance of preferred units, net of issuance costs	0
Issuance of common units, net of issuance costs	0
General partner contribution	0
Distributions to preferred unitholders	(5,348)
Distributions to common unitholders and general partner	(108,070)	(98,051)
Contributions from (distributions to) affiliates	1,262,000	0
Net intercompany activity	(1,778,816)	24,561
Other, net	1,319	(2,281)
Net cash provided by (used in) financing activities	(174,580)	1,741
Effect of foreign exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	59	(1)
Cash and cash equivalents as of the beginning of the period	5	4
Cash and cash equivalents as of the end of the period	64	3
NuPOP
Cash flows from operating activities:
Net cash provided by operating activities	45,790	79,728
Cash flows from investing activities:
Capital expenditures	(5,588)	(19,474)
Change in accounts payable related to capital expenditures	(35)	3,357
Acquisitions	0
Proceeds from sale or disposition of assets	12
Investment in subsidiaries	0
Proceeds from Axeon term loan	0
Net cash provided by (used in) investing activities	(5,611)	(16,117)
Cash flows from financing activities:
Debt borrowings	0	0
Debt repayments	0	0
Note offering, net of issuance costs	0
Issuance of preferred units, net of issuance costs	0
Issuance of common units, net of issuance costs	0
General partner contribution	0
Distributions to preferred unitholders	(5,348)
Distributions to common unitholders and general partner	(108,069)	(98,051)
Contributions from (distributions to) affiliates	0	0
Net intercompany activity	73,237	34,440
Other, net	1	0
Net cash provided by (used in) financing activities	(40,179)	(63,611)
Effect of foreign exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents as of the beginning of the period	0	0
Cash and cash equivalents as of the end of the period	0	0
Non-Guarantor Subsidiaries
Cash flows from operating activities:
Net cash provided by operating activities	192,692	201,026
Cash flows from investing activities:
Capital expenditures	(83,622)	(28,215)
Change in accounts payable related to capital expenditures	9,709	(3,801)
Acquisitions	(1,476,719)
Proceeds from sale or disposition of assets	56
Investment in subsidiaries	(126)
Proceeds from Axeon term loan	0
Net cash provided by (used in) investing activities	(1,550,702)	(32,016)
Cash flows from financing activities:
Debt borrowings	65,400	17,400
Debt repayments	(70,500)	(14,200)
Note offering, net of issuance costs	0
Issuance of preferred units, net of issuance costs	0
Issuance of common units, net of issuance costs	0
General partner contribution	0
Distributions to preferred unitholders	(5,348)
Distributions to common unitholders and general partner	(108,080)	(98,062)
Contributions from (distributions to) affiliates	126	(24,510)
Net intercompany activity	1,468,957	(60,756)
Other, net	(1)	(8,891)
Net cash provided by (used in) financing activities	1,350,554	(189,019)
Effect of foreign exchange rate changes on cash	649	4,389
Net increase (decrease) in cash and cash equivalents	(6,807)	(15,620)
Cash and cash equivalents as of the beginning of the period	35,067	117,973
Cash and cash equivalents as of the end of the period	$ 28,260	$ 102,353