Exhibit 99.1

FOR IMMEDIATE RELEASE

Plains All American Pipeline, L.P. and Plains GP Holdings Report Fourth-Quarter and Full-Year 2016 Results

PAA Also Furnishes 2017 Full-Year Guidance

(Houston — February 7, 2017) Plains All American Pipeline, L.P. (NYSE: PAA) and Plains GP Holdings (NYSE: PAGP) today reported fourth-quarter and full-year 2016 results.

Plains All American Pipeline, L.P.

Summary Financial Information (unaudited)

(in millions, except per unit data)

(1)             See the section of this release entitled “Non-GAAP Financial Measures and Selected Items Impacting Comparability” and the tables attached hereto for information regarding certain selected items that PAA believes impact comparability of financial results between reporting periods, as well as for information regarding non-GAAP financial measures (such as adjusted EBITDA) and their reconciliation to the most directly comparable measures as reported in accordance with GAAP.

(2)             During the fourth quarter of 2016, we modified our definition of adjusted EBITDA to exclude depreciation and amortization expense associated with equity method investments. Prior period amounts have been recast to reflect this change.

“PAA reported fourth-quarter 2016 adjusted EBITDA of $600 million which was essentially in line with the fourth-quarter guidance furnished last November and full-year 2016 adjusted EBITDA of $2.169 billion,” said Greg Armstrong, Chairman and CEO of Plains All American.

“Looking forward, we are encouraged by the significant increase in drilling and completion activities in the Permian Basin observed over the latter half of 2016 and continuing into 2017.  These activity levels have increased our conviction in significant Permian Basin production growth in 2017 and beyond as we discussed on our acquisition related conference call on January 25th.”

333 Clay Street, Suite 1600          Houston, Texas 77002          713-646-4100 / 866-809-1291

Page 2

Segment adjusted EBITDA for the fourth quarter and full year of 2016 is presented below:

Summary of Selected Financial Data by Segment (1) (unaudited)

(in millions)

(1)             During the fourth quarter of 2016, we modified our primary segment performance measure to segment adjusted EBITDA from segment profit. Prior period segment amounts have been recast to reflect this change. See additional discussion below.

Fourth-quarter 2016 Transportation segment adjusted EBITDA increased by 4% versus comparable 2015 results. This increase was primarily driven by increased volumes and margins on certain of our Permian Basin pipelines, earnings from our 40% interest in the Saddlehorn pipeline which was placed in service in the third quarter of 2016 and lower operating expenses, partially offset by the sale of certain of our Gulf Coast pipelines in early 2016.

Fourth-quarter 2016 Facilities segment adjusted EBITDA increased by 14% versus comparable 2015 results. This increase was primarily due to contributions from the Western Canada NGL assets acquired in August 2016 and contributions from ongoing projects at our Fort Saskatchewan facility as well as lower operating expenses.

Fourth-quarter 2016 Supply and Logistics segment adjusted EBITDA decreased by 4% relative to comparable 2015 results. This decrease was primarily driven by lower volumes and margins associated with our U.S. crude oil lease gathering activities due to less favorable market conditions as a result of increased competition and lower crude oil production in certain regions.

During the fourth quarter of 2016, we modified our primary segment performance measure to segment adjusted EBITDA from segment profit.  Segment adjusted EBITDA forms the basis of our internal financial reporting and is the primary measure used by our Chief Operating Decision Maker (“CODM”) in assessing performance and allocating resources among our operating segments.  In conjunction with this change, we modified our adjusted EBITDA metric to exclude depreciation and amortization expense associated with equity method investments.  Prior period amounts have been recast to reflect this change. The 2016 fourth quarter and full year impact of this modification increased adjusted EBITDA by $13 million and $50 million, respectively, and the 2015 fourth quarter and full year impact of this modification increased adjusted EBITDA by $12 million and $45 million, respectively, within the Transportation segment.

333 Clay Street, Suite 1600          Houston, Texas 77002          713-646-4100 / 866-809-1291

Page 3

2017 Full-Year Guidance

Full-year 2017 financial and operating guidance is presented below:

FINANCIAL AND OPERATING GUIDANCE (unaudited)

(in millions, except per barrel data)

(G)       2017 Guidance forecasts are intended to be + / - amounts.

(1)             See the section of this release entitled “Non-GAAP Financial Measures and Selected Items Impacting Comparability” and the Financial Data Reconciliations table attached hereto for information regarding non-GAAP financial measures and, for the 2015 and 2016 periods, their reconciliation to the most directly comparable measures as reported in accordance with GAAP. We do not provide a reconciliation of non-GAAP financial measures to the equivalent GAAP financial measures on a forward-looking basis as it is impractical to forecast certain items that we have defined as “Selected Items Impacting Comparability” without unreasonable effort, due to the uncertainty and inherent difficulty of predicting the occurrence and financial impact of and the periods in which such items may be recognized. Thus, a reconciliation of non-GAAP financial measures to the equivalent GAAP financial measures could result in disclosure that could be imprecise or potentially misleading.

(2)             Excludes certain non-cash items impacting interest expense such as amortization of debt issuance costs and terminated interest rate swaps.

333 Clay Street, Suite 1600          Houston, Texas 77002          713-646-4100 / 866-809-1291

Page 4

Plains GP Holdings

PAGP owns an indirect non-economic controlling interest in PAA’s general partner and an indirect limited partner interest in PAA. As the control entity of PAA, PAGP consolidates PAA’s results into its financial statements, which is reflected in the condensed consolidating balance sheet and income statement tables included at the end of this release.  Information regarding PAGP’s distributions is reflected below:

(1)             A reverse split of PAGP’s Class A shares was completed on November 15, 2016. The effect of the reverse split has been retroactively applied to all per-share amounts presented.

Conference Call

PAA and PAGP will hold a conference call at 11:00 a.m. ET on Wednesday, February 8, 2017 to discuss the following items:

1.              PAA’s fourth-quarter and full-year 2016 performance;

2.              Financial and operating guidance for 2017;

3.              An update on major capital expansion projects;

4.              Capitalization and liquidity; and

5.              PAA and PAGP’s outlook for the future.

Prior to the conference call, PAA will furnish a current report on Form 8-K that will include material in this earnings release. A copy of the 8-K and a slide presentation for the conference call will be available at www.plainsallamerican.com, where PAA and PAGP routinely post important information.

Conference Call Webcast Instructions

To access the internet webcast of the conference call, please go to www.plainsallamerican.com, under the “Investor Relations” section of the website (Navigate to: Investor Relations / either “PAA” or “PAGP” / News & Events / Quarterly Earnings).  Following the live webcast, an audio replay in MP3 format will be available on the website within two hours after the end of the call and will be accessible for a period of 365 days.

Non-GAAP Financial Measures and Selected Items Impacting Comparability

To supplement our financial information presented in accordance with GAAP, management uses additional measures known as “non-GAAP financial measures” in its evaluation of past performance and prospects for the future. The primary additional measures used by management are earnings before interest, taxes, depreciation and amortization (including our proportionate share of depreciation and amortization of unconsolidated entities) and adjusted for certain selected items impacting comparability (“adjusted EBITDA”) and implied distributable cash flow (“DCF”).

Management believes that the presentation of such additional financial measures provides useful information to investors regarding our performance and results of operations because these measures, when used to supplement related GAAP financial measures, (i) provide additional information about our core operating performance and ability to fund distributions to our unitholders through cash generated by our operations and (ii) provide investors with the same financial analytical framework upon which

333 Clay Street, Suite 1600          Houston, Texas 77002          713-646-4100 / 866-809-1291

Page 5

management bases financial, operational, compensation and planning/budgeting decisions. We also present these and additional non-GAAP financial measures, including adjusted net income attributable to PAA and basic and diluted adjusted net income per common unit, as they are measurements that investors, rating agencies and debt holders have indicated are useful in assessing us and our results of operations. These non-GAAP measures may exclude, for example, (i) charges for obligations that are expected to be settled with the issuance of equity instruments, (ii) the mark-to-market of derivative instruments that are related to underlying activities in another period (or the reversal of such adjustments from a prior period), the mark-to-market related to our Preferred Distribution Rate Reset Option, gains and losses on derivatives that are related to investing activities (such as the purchase of linefill) and inventory valuation adjustments, as applicable, (iii) long-term inventory costing adjustments, (iv) items that are not indicative of our core operating results and business outlook and/or (v) other items that we believe should be excluded in understanding our core operating performance. These measures may further be adjusted to include amounts related to deficiencies associated with minimum volume commitments whereby we have billed the counterparties for their deficiency obligation and such amounts are recognized as deferred revenue in “Accounts payable and accrued liabilities” on our Consolidated Financial Statements. Such amounts are presented net of applicable amounts subsequently recognized into revenue. Furthermore, the calculation of these measures contemplates tax effects as a separate reconciling item, where applicable. We have defined all such items as “selected items impacting comparability.” Due to the nature of the selected items, certain selected items impacting comparability may impact certain non-GAAP financial measures, referred to as adjusted results, but not impact other non-GAAP financial measures. We do not necessarily consider all of our selected items impacting comparability to be non-recurring, infrequent or unusual, but we believe that an understanding of these selected items impacting comparability is material to the evaluation of our operating results and prospects.

Although we present selected items impacting comparability that management considers in evaluating our performance, you should also be aware that the items presented do not represent all items that affect comparability between the periods presented. Variations in our operating results are also caused by changes in volumes, prices, exchange rates, mechanical interruptions, acquisitions, expansion projects and numerous other factors. These types of variations are not separately identified in this release, but will be discussed, as applicable, in management’s discussion and analysis of operating results in our Annual Report on Form 10-K.

Our definition and calculation of certain non-GAAP financial measures may not be comparable to similarly-titled measures of other companies. Adjusted EBITDA, Implied DCF and other non-GAAP financial performance measures are reconciled to Net Income (the most directly comparable measure as reported in accordance with GAAP) for the historical periods presented in the tables attached to this release, and should be viewed in addition to, and not in lieu of, our Consolidated Financial Statements and notes thereto. In addition, we encourage you to visit our website at www.plainsallamerican.com (in particular the section under “Financial Information” entitled “Non-GAAP Reconciliations” within the “Investor Relations” tab), which presents a reconciliation of our commonly used non-GAAP and supplemental financial measures.

333 Clay Street, Suite 1600          Houston, Texas 77002          713-646-4100 / 866-809-1291

Page 6

Forward Looking Statements

Except for the historical information contained herein, the matters discussed in this release consist of forward-looking statements that involve certain risks and uncertainties that could cause actual results or outcomes to differ materially from results or outcomes anticipated in the forward-looking statements. These risks and uncertainties include, among other things, declines in the volume of crude oil, refined product and NGL shipped, processed, purchased, stored, fractionated and/or gathered at or through the use of our assets, whether due to declines in production from existing oil and gas reserves, reduced demand, failure to develop or slowdown in the development of additional oil and gas reserves, whether from reduced cash flow to fund drilling or the inability to access capital, or other factors; the effects of competition; market distortions caused by producer over-commitments to new or recently constructed infrastructure projects, which impacts volumes, margins, returns and overall earnings; unanticipated changes in crude oil market structure, grade differentials and volatility (or lack thereof); environmental liabilities or events that are not covered by an indemnity, insurance or existing reserves; maintenance of our credit rating and ability to receive open credit from our suppliers and trade counterparties; fluctuations in refinery capacity in areas supplied by our mainlines and other factors affecting demand for various grades of crude oil, refined products and natural gas and resulting changes in pricing conditions or transportation throughput requirements; the occurrence of a natural disaster, catastrophe, terrorist attack (including eco-terrorist attacks) or other event, including attacks on our electronic and computer systems; failure to implement or capitalize, or delays in implementing or capitalizing, on expansion projects, whether due to permitting delays, permitting withdrawals or other factors; tightened capital markets or other factors that increase our cost of capital or limit our ability to obtain debt or equity financing on satisfactory terms to fund additional acquisitions, expansion projects, working capital requirements and the repayment or refinancing of indebtedness; the successful integration and future performance of acquired assets or businesses and the risks associated with operating in lines of business that are distinct and separate from our historical operations; the currency exchange rate of the Canadian dollar; continued creditworthiness of, and performance by, our counterparties, including financial institutions and trading companies with which we do business; inability to recognize current revenue attributable to deficiency payments received from customers who fail to ship or move more than minimum contracted volumes until the related credits expire or are used; non-utilization of our assets and facilities; increased costs, or lack of availability, of insurance; weather interference with business operations or project construction, including the impact of extreme weather events or conditions; the availability of, and our ability to consummate, acquisition or combination opportunities; the effectiveness of our risk management activities; shortages or cost increases of supplies, materials or labor; the impact of current and future laws, rulings, governmental regulations, accounting standards and statements and related interpretations; fluctuations in the debt and equity markets, including the price of our units at the time of vesting under our long-term incentive plans; risks related to the development and operation of our assets, including our ability to satisfy our contractual obligations to our customers; factors affecting demand for natural gas and natural gas storage services and rates; general economic, market or business conditions and the amplification of other risks caused by volatile financial markets, capital constraints and pervasive liquidity concerns; and other factors and uncertainties inherent in the transportation, storage, terminalling and marketing of crude oil and refined products, as well as in the storage of natural gas and the processing, transportation, fractionation, storage and marketing of natural gas liquids as discussed in the Partnerships’ filings with the Securities and Exchange Commission.

333 Clay Street, Suite 1600          Houston, Texas 77002          713-646-4100 / 866-809-1291

Page 7

Plains All American Pipeline, L.P. is a publicly traded master limited partnership that owns and operates midstream energy infrastructure and provides logistics services for crude oil, NGLs, natural gas and refined products. PAA owns an extensive network of pipeline transportation, terminalling, storage and gathering assets in key crude oil and NGL producing basins and transportation corridors and at major market hubs in the United States and Canada. On average, PAA handles over 4.6 million barrels per day of crude oil and NGL in its Transportation segment. PAA is headquartered in Houston, Texas.  More information is available at www.plainsallamerican.com.

Plains GP Holdings is a publicly traded entity that owns an indirect, non-economic controlling general partner interest in PAA and an indirect limited partner interest in PAA, one of the largest energy infrastructure and logistics companies in North America. PAGP is headquartered in Houston, Texas.

333 Clay Street, Suite 1600          Houston, Texas 77002          713-646-4100 / 866-809-1291

Page 8

PLAINS ALL AMERICAN PIPELINE, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in millions, except per unit data)

NON-GAAP ADJUSTED RESULTS

(in millions, except per unit data)

333 Clay Street, Suite 1600          Houston, Texas 77002          713-646-4100 / 866-809-1291

Page 9

PLAINS ALL AMERICAN PIPELINE, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEET DATA

(in millions)

(1)                           At December 31, 2016, short-term debt includes borrowings of approximately $1,303 million for short-term hedged inventory purchases and borrowings of approximately $410 million for cash margin deposits with our clearing brokers, which are associated with financial derivatives used for hedging purposes.

333 Clay Street, Suite 1600          Houston, Texas 77002          713-646-4100 / 866-809-1291

Page 10

PLAINS ALL AMERICAN PIPELINE, L.P. AND SUBSIDIARIES

OPERATING DATA (1)

(1)                       Average volumes are calculated as total volumes for the period (attributable to our interest) divided by the number of days or months in the period.

(2)                       Region includes volumes (attributable to our interest) from pipelines owned by unconsolidated entities.

(3)                       Facilities segment total is calculated as the sum of: (i) crude oil, refined products and NGL terminalling and storage capacity; (ii) rail load and unload volumes multiplied by the number of days in the period and divided by the number of months in the period; (iii) natural gas storage working capacity divided by 6 to account for the 6:1 mcf of natural gas to crude Btu equivalent ratio and further divided by 1,000 to convert to monthly volumes in millions; and (iv) NGL fractionation volumes multiplied by the number of days in the period and divided by the number of months in the period.

333 Clay Street, Suite 1600          Houston, Texas 77002          713-646-4100 / 866-809-1291

Page 11

PLAINS ALL AMERICAN PIPELINE, L.P. AND SUBSIDIARIES

COMPUTATION OF BASIC AND DILUTED NET INCOME PER COMMON UNIT (1)

(in millions, except per unit data)

(1)                       We calculate net income allocated to common unitholders based on the distributions pertaining to the current period’s net income. After adjusting for the appropriate period’s distributions, the remaining undistributed earnings or excess distributions over earnings, if any, are allocated to the general partner, common unitholders and participating securities in accordance with the contractual terms of our partnership agreement in effect for the period and as further prescribed under the two-class method.

The Simplification Transactions, which closed on November 15, 2016, included the permanent elimination of our IDRs and the economic rights associated with our 2% general partner interest in exchange for the issuance by us of approximately 244.7 million common units and the assumption of Plains AAP, L.P.’s (“AAP”) debt. As such, beginning with the distribution pertaining to the fourth quarter of 2016, our general partner is no longer entitled to receive distributions on the IDRs or 2% general partner interest.

(2)                       We have considered the common units issued in connection with the Simplification Transactions to be outstanding for the entire fourth quarter of 2016 in the calculation of weighted average common units outstanding to more closely reflect the ownership interests in us with rights to the distributions for the periods included in the calculation of net income allocated to common unitholders.

(3)                       Our Long-term Incentive Plan (“LTIP”) awards that contemplate the issuance of common units are considered dilutive unless (i) vesting occurs only upon the satisfaction of a performance condition and (ii) that performance condition has yet to be satisfied. LTIP awards that are deemed to be dilutive are reduced by a hypothetical unit repurchase based on the remaining unamortized fair value, as prescribed by the treasury stock method in guidance issued by the FASB.

(4)                       The possible conversion of our Series A preferred units was excluded from the calculation of diluted net income per common unit for the three and twelve months ended December 31, 2016 as the effect was antidilutive.

333 Clay Street, Suite 1600          Houston, Texas 77002          713-646-4100 / 866-809-1291

Page 12

PLAINS ALL AMERICAN PIPELINE, L.P. AND SUBSIDIARIES

SELECTED FINANCIAL DATA BY SEGMENT (1)

(in millions)