Exhibit 99.1

FOR IMMEDIATE RELEASE

Plains All American Pipeline, L.P. and Plains GP Holdings Report Fourth-Quarter and Full-Year 2014 Results

(Houston — February 4, 2015) Plains All American Pipeline, L.P. (NYSE: PAA) and Plains GP Holdings (NYSE: PAGP) today reported fourth-quarter and full-year 2014 results.

Plains All American Pipeline, L.P.

Summary Financial Information (1) (unaudited)

(in millions, except per unit data)

(1)                                     PAA’s reported results include the impact of items that affect comparability between reporting periods. The impact of certain of these items is excluded from adjusted results.  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.

“2014 represents another year of solid execution for PAA, as we delivered results in line with to slightly ahead of the midpoint of our guidance for both the fourth quarter and full year, excluding the impact of a fourth quarter acquisition,” stated Greg L. Armstrong, Chairman and CEO of Plains All American.  “These results were underpinned by solid performance in our Transportation and Supply and Logistics segments.”

Armstrong noted that following PAA’s November earnings conference call, crude oil and natural gas liquids prices decreased approximately 40%, which resulted in significant reductions in the outlook for producer drilling activities in 2015 — in many cases ranging from 30% to 40% below 2014 levels.

“PAA is well positioned to manage through industry down cycles; however, we are not immune to the adverse impacts of a major step change in commodity prices that is accompanied by a similar change in producers’ activity levels.  Accordingly, we have reduced the midpoint of our acquisition adjusted EBITDA guidance for 2015 by 6.5%, from just over $2.5 billion, as furnished on November 5th, to $2.35 billion and revised our distribution growth target for 2015.  We are currently targeting distribution growth for PAA of 7% for 2015, which would equate to a distribution increase for PAGP of approximately 21%.”

Armstrong stated that the updated guidance midpoint represented an increase of approximately 7% over 2014 results and is based on 2015 WTI oil prices hovering around $50 per barrel for all of 2015 and the expectation that producer drilling activities will be materially reduced relative to 2014.  WTI prices averaged approximately $93 per barrel in 2014.

“While the duration of the current down-cycle is unknown, our confidence in the North American crude oil resource base and its ultimate development remains high. As we look ahead, PAA remains well positioned to continue to grow and strengthen its business through organic growth projects and also to actively pursue attractive acquisition opportunities.  For 2015, we are targeting an expansion capital plan of $1.85 billion, down approximately 9% from the $2.03 billion spent in 2014.  Importantly, PAA enters 2015 with a strong balance sheet, credit metrics that are consistent with or favorable to our targeted levels and $3.6 billion of committed liquidity.”

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The following table summarizes selected PAA financial information by segment for the fourth quarter and full year of 2014:

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

(in millions)

(1)            PAA’s reported results include the impact of items that affect comparability between reporting periods. The impact of certain of these items is excluded from adjusted results. 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.

(2)            Certain of our non-GAAP financial measures may not be impacted by each of the selected items impacting comparability.

Fourth-quarter 2014 Transportation adjusted segment profit increased 26% versus comparable 2013 results. This increase was primarily driven by higher crude oil pipeline volumes associated with North American crude oil production and recently completed organic growth projects, increased tariff rates on certain of our crude oil pipelines and the acquisition of a 50% interest in the BridgeTex pipeline completed in November 2014.

Fourth-quarter 2014 Facilities adjusted segment profit decreased 11% versus comparable 2013 results.  This decrease was primarily due to the impact of recontracting capacity originally contracted at higher rates within our natural gas storage operations.

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Fourth-quarter 2014 Supply and Logistics adjusted segment profit decreased by approximately 17% relative to comparable 2013 results. This decrease was primarily related to less favorable NGL and crude oil market conditions in the fourth quarter of 2014 compared to the same 2013 period.  These impacts were partially offset by growth in crude oil lease gathering volumes.

Plains GP Holdings

PAGP’s sole assets are its ownership interest in PAA’s general partner and incentive distribution rights.  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 included at the end of this release.  Information regarding PAGP’s distributions is reflected below:

Summary Financial Information

(1)            Reflects a full fourth quarter 2013 distribution per Class A share (before proration), assuming PAGP’s ownership interest in PAA’s general partner was for the full fourth quarter of 2013.

Conference Call

PAA and PAGP will hold a conference call on February 5, 2015 (see details below).  Prior to this conference call, PAA will furnish a current report on Form 8-K, which will include material in this news release as well as PAA’s financial and operational guidance for the first quarter and full year of 2015.  A copy of the Form 8-K will be available at www.plainsallamerican.com, where PAA and PAGP routinely post important information.

The PAA and PAGP conference call will be held at 10:00 a.m. EST on Thursday, February 5, 2015 to discuss the following items:

1.              PAA’s fourth-quarter and full-year 2014 performance;

2.              The status of major expansion projects;

3.              Capitalization and liquidity;

4.              Financial and operating guidance for the first quarter and full year of 2015; and

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

Conference Call Access Instructions

To access the Internet webcast of the conference call, please go to www.plainsallamerican.com, choose “Investor Relations,” and then choose “Events and Presentations.”  Following the live webcast, the call will be archived for a period of sixty (60) days on the website.

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Alternatively, access to the live conference call is available by dialing toll free (800) 230-1085. International callers should dial (612) 288-0340.  No password is required.  The slide presentation accompanying the conference call will be available a few minutes prior to the call under the “Events and Presentations” tab of the PAA and PAGP Investor Relations sections of the above referenced website.

Telephonic Replay Instructions

To listen to a telephonic replay of the conference call, please dial (800) 475-6701, or (320) 365-3844 for international callers, and enter replay access code 349000.  The replay will be available beginning Thursday, February 5, 2015, at approximately 12:00 p.m. EST and will continue until 11:59 p.m. EST on March 5, 2015.

Non-GAAP Financial Measures and Selected Items Impacting Comparability

To supplement our financial information presented in accordance with GAAP, management uses additional measures that are known as “non-GAAP financial measures” (such as adjusted EBITDA and implied distributable cash flow (“DCF”)) in its evaluation of past performance and prospects for the future. 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 in conjunction with related GAAP financial measures, (i) provide additional information about our core operating performance and ability to generate and distribute cash flow, (ii) provide investors with the financial analytical framework upon which management bases financial, operational, compensation and planning decisions and (iii) present measurements that investors, rating agencies and debt holders have indicated are useful in assessing us and our results of operations. These 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), (iii) inventory valuation 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. We have defined all such items as “Selected Items Impacting Comparability.”  We consider an understanding of these selected items impacting comparability to be material to the evaluation of our operating results and prospects.

Although we present selected items that we consider 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 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.

Adjusted EBITDA and other non-GAAP financial measures are reconciled to the most comparable measures as reported in accordance with GAAP for the 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, PAA maintains on its website (www.plainsallamerican.com) a reconciliation of adjusted EBITDA and certain commonly used non-GAAP financial information to the most comparable GAAP measures. To access the information, investors should click on “Plains All American Pipeline, L.P.” under the “Investor Relations” link on the home page, select the “Guidance & Non-GAAP Reconciliations” link and navigate to the “Non-GAAP Reconciliations” tab.

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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, failure to implement or capitalize, or delays in implementing or capitalizing, on planned growth projects; 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 facilities, whether due to declines in production from existing oil and gas reserves, 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; 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; 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 effects of competition; the occurrence of a natural disaster, catastrophe, terrorist attack or other event, including attacks on our electronic and computer systems; 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; weather interference with business operations or project construction, including the impact of extreme weather events or conditions; continued creditworthiness of, and performance by, our counterparties, including financial institutions and trading companies with which we do business; maintenance of our credit rating and ability to receive open credit from our suppliers and trade counterparties; the currency exchange rate of the Canadian dollar; the availability of, and our ability to consummate, acquisition or combination opportunities; 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 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; non-utilization of our assets and facilities; increased costs, or lack of availability, of insurance; 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 facilities, including our ability to satisfy our contractual obligations to our customers at our facilities; 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.

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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, natural gas liquids (“NGL”), 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 4.1 million barrels per day of crude oil and NGL on its pipelines. PAA is headquartered in Houston, Texas.

Plains GP Holdings is a publicly traded entity that owns an interest in the general partner and incentive distribution rights of Plains All American Pipeline, L.P., one of the largest energy infrastructure and logistics companies in North America. PAGP is headquartered in Houston, Texas.

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PLAINS ALL AMERICAN PIPELINE, L.P. AND SUBSIDIARIES

FINANCIAL SUMMARY (unaudited)

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in millions, except per unit data)

ADJUSTED RESULTS

(in millions, except per unit data)

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PLAINS ALL AMERICAN PIPELINE, L.P. AND SUBSIDIARIES

FINANCIAL SUMMARY (unaudited)

CONDENSED CONSOLIDATED BALANCE SHEET DATA

(in millions)

DEBT CAPITALIZATION RATIOS

(in millions)

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PLAINS ALL AMERICAN PIPELINE, L.P. AND SUBSIDIARIES

FINANCIAL SUMMARY (unaudited)

SELECTED FINANCIAL DATA BY SEGMENT

(in millions)

(1)                                     Includes intersegment amounts.

(2)                                     Field operating costs and Segment general and administrative expenses exclude equity-indexed compensation expense, which is presented separately in the table above.

(3)                                     Segment general and administrative expenses reflect direct costs attributable to each segment and an allocation of other expenses to the segments. The proportional allocations by segment require judgment by management and are based on the business activities that exist during each period.

(4)                                     Certain of our non-GAAP financial measures may not be impacted by each of the selected items impacting comparability.

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PLAINS ALL AMERICAN PIPELINE, L.P. AND SUBSIDIARIES

FINANCIAL SUMMARY (unaudited)

OPERATING DATA (1)