Exhibit 99.2

TARGA RESOURCES PARTNERS LP

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

On February 27, 2015, Atlas Energy, L.P. (“ATLS”), Atlas Energy, LLC, which is the general partner of ATLS, Targa Resources Corp. (“TRC”) and Trident GP Merger Sub LLC, which is a newly formed subsidiary of TRC (“GP Merger Sub”), closed on a merger in accordance with the Agreement and Plan of Merger dated October 13, 2014 (the “ATLS Merger Agreement”), pursuant to which TRC acquired ATLS in a merger between ATLS and GP Merger Sub (the “ATLS Merger” or the “ATLS Acquisition”). As a result of the ATLS Merger, ATLS became a wholly owned subsidiary of TRC, and the general partner of ATLS is indirectly wholly owned by TRC.

Concurrently with the execution of the ATLS Merger Agreement, Atlas Pipeline Partners, L.P. (“APL”) entered into an Agreement and Plan of Merger (the “APL Merger Agreement”) with Targa Resources Partners LP (the “Partnership” or “TRP”), TRC, Targa Resources GP LLC, which is the general partner of TRP (“TRP GP”), Trident MLP Merger Sub LLC, which is a newly formed subsidiary of TRP (“MLP Merger Sub”), ATLS and Atlas Pipeline Partners GP, LLC, which is the general partner of APL (“APL GP”), pursuant to which TRP, immediately following the ATLS Merger, acquired APL in a merger between APL and MLP Merger Sub (the “APL Merger” or the “APL Acquisition”) with APL continuing as the surviving entity and as a wholly owned subsidiary of TRP.

In addition, in accordance with the terms and conditions set forth in the ATLS Merger Agreement, ATLS has pursuant to a separation and distribution agreement, (1) transferred its assets and liabilities other than those related to its “Atlas Pipeline Partners” segment to Atlas Energy Group, LLC (“New Atlas”), and (2) immediately prior to the ATLS Merger, effected a pro rata distribution to the ATLS unitholders of New Atlas common units representing a 100% interest in New Atlas (the “Spin-Off” and, together with the Atlas Mergers, the “Transactions”).

Acquisition of Atlas Energy, L.P.

Prior to the ATLS Merger, ATLS spun off its non-midstream assets. We refer to ATLS after giving effect to the Spin-Off as “RemainCo.” The assets and liabilities of RemainCo are solely the assets and liabilities related to ATLS’s “Atlas Pipeline Partners” segment. Subject to the terms and conditions set forth in the ATLS Merger Agreement, at the effective time of the ATLS Merger, holders of ATLS common units (other than certain common units held by TRC or ATLS or their wholly owned subsidiaries, which were cancelled) received (i) 0.1809 of a share of TRC common stock (the “ATLS Stock Consideration”) and (ii) $9.12 in cash, without interest (the “ATLS Cash Consideration” and together with the ATLS Stock Consideration, the “ATLS Merger Consideration”) for each ATLS common unit. TRC has obtained new senior secured credit facilities totaling $1.1 billion (the “Committed Financing”), which is comprised of a $430 million variable-rate term loan due 2022 (the “TRC Term Loan”) and a $670 million variable-rate revolving credit facility due 2020 (the “New TRC Revolver”), to replace its existing Senior Secured Revolving Credit Facility and to fund the cash components of the ATLS Merger, including cash merger consideration, $149.2 million related to change of control payments and a portion of the cash settlements of New Atlas equity awards, $88 million related to repayment of a portion of ATLS outstanding indebtedness and $11 million for reimbursement of certain ATLS transaction expenses.

In connection with the Spin-Off, each of the outstanding awards granted under ATLS’s equity compensation plans were converted into the right to receive adjusted awards relating to common units of ATLS and New Atlas, and all New Atlas awards issued in connection with the adjustment were subsequently cancelled and settled for cash, New Atlas common units, or a combination of both. Each option to purchase ATLS common units was converted into an adjusted ATLS option and a New Atlas option. The exercise price and number of units subject to each option were adjusted to preserve the aggregate intrinsic value of the original ATLS option as measured immediately before and immediately after the Spin-Off, subject to rounding.

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Acquisition of Atlas Pipeline Partners, L.P.

In accordance with the terms and conditions set forth in the APL Merger Agreement, holders of APL common units (other than certain common units held by TRP or APL or their wholly owned subsidiaries, which were cancelled) received (i) 0.5846 of a unit of TRP (the “APL Unit Consideration”) and (ii) $1.26 in cash, without interest (the “APL Cash Consideration” and, together with the APL Unit Consideration, the “APL Merger Consideration”) for each APL common unit.

As the record date of the APL unitholders meeting (which was held to vote on the APL Merger) occurred before the mandatory conversion date of the APL Class D Preferred Units (as set forth in the certificate of designations for the APL Class D Preferred Units), APL, APL GP, TRP and TRP GP cooperated and took such actions as were necessary, required or advisable to cause all APL Class D Preferred Units that were issued and outstanding as of the record date for the APL unitholders meeting to be converted into APL common units. APL, APL GP, TRP and TRP GP took such actions as were necessary, required or advisable to redeem, effective as of the effective time of the APL Merger, the APL Class E Preferred Units in accordance with the certificate of designations for the APL Class E Preferred Units for $127.7 million in cash, which included $1.2 million representing all accumulated and unpaid distributions on the Class E Preferred Units as of the redemption date, immediately prior to the effective time of the APL Merger, and TRP deposited with the paying agent on behalf of APL the funds for such redemption. TRP financed the cash portion of the APL Merger with cash on hand and borrowings under its variable rate Senior Secured Revolving Credit Facility due 2017 (the “TRP Revolver”).

In connection with the APL Merger, TRC has agreed to reduce its incentive distribution rights for the four years following closing by fixed amounts of $37.5 million, $25.0 million, $10.0 million and $5.0 million, respectively. These annual amounts will be applied in equal quarterly installments for each successive four-quarter period following closing.

In connection with the APL Merger, each outstanding APL phantom unit award held by an individual employed by ATLS following the Spin-Off was cancelled and converted into (1) the APL Cash Consideration in respect of each APL common unit underlying such APL phantom unit award and (2) a TRP phantom unit award (Long Term Incentive Plan or “LTIP” Award) with respect to a number of TRP common units equal to the product of the APL Unit Consideration multiplied by the number of APL common units underlying such APL phantom unit award. Following the closing of the APL Merger, the TRP phantom unit award continues to have the same material terms and conditions and the same vesting conditions as applied to the corresponding APL phantom unit award immediately prior to the closing of the APL Merger, and will settle in TRP common units upon vesting. The unaudited pro forma condensed consolidated financial statements have been developed by applying pro forma adjustments to the historical audited and unaudited consolidated financial statements of TRP. The unaudited pro forma condensed consolidated balance sheet as of December 31, 2014 of TRP has been prepared to give effect to the APL Merger as if it had occurred on December 31, 2014. The unaudited pro forma condensed consolidated statement of operations of TRP for the year ended December 31, 2014, has been prepared to give effect to the APL Merger as if it had occurred on January 1, 2014.

On January 15, 2015, TRP commenced concurrent offers to purchase for cash (the “APL Notes Tender Offers”) any and all outstanding 6 ⁵⁄₈% Senior Notes due 2020 (the “2020 APL Notes”), 4 ³⁄₄% Senior Notes due 2021 (the “2021 APL Notes”) and 5 ⁷⁄₈% Senior Notes due 2023 (the “2023 APL Notes” and, together with the 2020 APL Notes and the 2021 APL Notes, the “APL Notes”) issued by APL and Atlas Pipeline Finance Corporation (“APL Finance” and, together with APL, the “APL Issuers”), of which collectively $1.55 billion remained outstanding. TRP offered to purchase the APL Notes of each series for $1,015 per $1,000 principal amount, together with accrued and unpaid interest to the purchase date, which included an early tender premium of $30 per $1,000 principal amount of notes validly tendered prior to 5:00 p.m., New York City time, on January 29, 2015. The APL Notes Tender Offers have expired with $1,135.5 million of the APL Notes tendered.

The consummation of the APL Merger resulted in a Change of Control under the indenture governing the APL Notes and obligated the APL Issuers to make a Change of Control Offer (the “Change of Control Offer”) at $1,010 for each $1,000 principal plus accrued and unpaid interest from the most recent interest payment date. As permitted by the APL Indenture, TRP made a Change of Control Offer for any and all of the 2020 APL Notes in lieu of the APL Issuers and in advance of, and conditioned upon, the consummation of the merger with APL. The Change of Control Offer expired on March 3, 2015 with $4.8 million of the 2020 APL Notes tendered.

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TRP financed the cash portion of the APL Notes Tender Offers and Change of Control Offer with the net proceeds from the 5% Senior Notes due 2018 (the “5% Notes”), the offering of which closed on January 30, 2015, and borrowings under the TRP Revolver.

The unaudited pro forma condensed consolidated financial statements include pro forma adjustments that are factually supportable and directly attributable to the APL Merger. In addition, with respect to the unaudited pro forma condensed consolidated statement of operations, pro forma adjustments have been made only for items that are expected to have a continuing impact on the consolidated results. The unaudited pro forma condensed consolidated financial statements do not give effect to any cost savings, operational synergies, or revenue enhancements expected to result from the APL Merger or the costs to achieve these cost savings, operating synergies and revenue enhancements.

The unaudited pro forma condensed consolidated financial statements should be read in conjunction with (i) the historical audited consolidated financial statements and related notes included in the respective Annual Reports on Form 10-K for the year ended December 31, 2014 for TRP and APL; and (ii) the notes accompanying these unaudited pro forma condensed consolidated financial statements.

The unaudited pro forma adjustments are based on available preliminary information and certain assumptions that TRP believes are reasonable under the circumstances. The unaudited pro forma condensed consolidated financial statements are presented for informational purposes only and are not necessarily indicative of the results that might have occurred had the APL Merger taken place on December 31, 2014 for balance sheet purposes, and on January 1, 2014 for statement of operations purposes, and are not intended to be a projection of future results. Actual results may vary significantly from the results reflected because of various factors. All pro forma adjustments and their underlying assumptions are described more fully in the notes to the unaudited pro forma condensed consolidated financial statements.

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TARGA RESOURCES PARTNERS LP

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET

DECEMBER 31, 2014

See accompanying notes to unaudited pro forma condensed consolidated financial statements

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TARGA RESOURCES PARTNERS LP

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS

YEAR ENDED DECEMBER 31, 2014

See accompanying notes to unaudited pro forma condensed consolidated financial statements

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TARGA RESOURCES PARTNERS LP

NOTES TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Except as noted within the context of each footnote disclosure, the dollar amounts presented in the tabular data within these footnote disclosures are stated in millions of dollars.

Note 1—Basis of Pro Forma Presentation

Item 9.01 of Form 8-K requires that Targa Resources Partners LP provide the following pro forma financial statements applicable to the APL Merger:

Under Securities and Exchange Commission (“SEC”) regulations, pro forma adjustments to TRP’s statement of operations are limited to those that are (1) directly attributable to the acquisition, (2) factually supportable and (3) expected to have a continuing impact. As such, in preparing the unaudited pro forma condensed consolidated statement of operations TRP has combined its reported results with those of the acquired company and made adjustments to:

Under SEC regulations, pro forma adjustments to TRP’s balance sheet are limited to those that give effect to events that are directly attributable to the acquisition and are factually supportable regardless of whether they have a continuing impact or are nonrecurring. The pro forma adjustments are based on the account balances and unit counts as of the pro forma balance sheet date, which will change between the pro forma balance sheet date and the closing date of the merger. In preparing the unaudited pro forma condensed consolidated balance sheet, TRP has utilized its previously reported audited consolidated balance sheet as of December 31, 2014 and made adjustments to:

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TRP accounts for business combinations pursuant to Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 805, Business Combinations. The unaudited pro forma condensed consolidated financial statements reflect preliminary estimates of the fair values of assets acquired and liabilities assumed. The fair values assigned to APL’s tangible and intangible assets acquired and liabilities assumed are based on management’s estimates and assumptions. The estimated fair values of these assets acquired and liabilities assumed are considered preliminary and are based on the information that is currently available. These fair value estimates may be revised after the Transactions close to reflect the final valuation based on updated information and revised assumptions. The unaudited pro forma condensed consolidated financial statements are not necessarily indicative of the results that actually would have occurred if TRP had completed the APL Merger on the dates indicated or which could be obtained in the future. The unaudited pro forma condensed consolidated financial statements should be read in conjunction with these notes accompanying the unaudited pro forma condensed consolidated financial statements and with the historical consolidated financial statements.

Note 2—Acquisition of Atlas Pipeline Partners, L.P.

On October 13, 2014, TRP and APL entered into the APL Merger Agreement. The APL Merger closed on February 27, 2015. The pro forma fair value of the consideration transferred for APL was approximately $4.8 billion, which consisted of the following:

The equity value portion of the consideration for TRP’s common units included in these pro forma financial statements is based on the closing price of $43.82 on February 27, 2015, and calculated as follows:

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Note 3—Pro Forma Adjustments and Assumptions

The unaudited pro forma condensed consolidated financial statements include adjustments required under SEC regulations as follows:

The preliminary fair value determination at the TRC parent level identified $1,606.1 million of intangible value as well as $13.0 million, net, of other assets and liabilities, as of the pro forma balance sheet date of December 31, 2014. The intangible asset value is primarily related to TRC’s acquired 100% interest in Atlas Pipeline Partners GP, LLC (the general partner interest, incentive distribute rights and control over and management of APL). The equity value portion of the consideration for TRC’s common shares included in these pro forma financial statements is based on the closing price of $99.58 on February 27, 2015.

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The following table reflects the estimated sources and uses of cash for the APL Notes Tender Offers and Change of Control Offer:

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A 1/8 percent variance in the interest rates for the TRP Revolver would have increased or decreased pro forma interest expense by $0.9 million for the year ended December 31, 2014.

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