Western Gas Announces Marcellus Acquisitions and Fourth-Quarter and Full-Year 2012 Results Provides

Western Gas Announces Marcellus Acquisitions and Fourth-Quarter and Full-Year 2012 Results
Provides Outlook for 2013

HOUSTON--(BUSINESS WIRE)-- Western Gas Partners, LP (NYS: WES) ("WES" or the "Partnership") today announced that it has agreed to acquire a 33.75% interest in both the Liberty and Rome gas gathering systems from Anadarko Petroleum Corporation (NYS: APC) for total consideration of $490 million (the "Anadarko Acquisition"). The Partnership also announced that it has agreed to acquire a 33.75% interest in the Larry's Creek, Seely and Warrensville gas gathering systems from an affiliate of Chesapeake Energy Corporation (NYS: CHK) for total consideration of $133.5 million (the "Third-Party Acquisition"). The assets in both the Anadarko Acquisition and the Third-Party Acquisition serve production from the Marcellus shale in north-central Pennsylvania and have current total combined throughput of over 1.2 Bcf/d.

"These immediately accretive Marcellus acquisitions further enhance both our geographic diversity and our fee-based asset portfolio," said Chief Operating Officer, Danny Rea. "We expect that the high quality of the underlying resources in combination with the large inventory of wells not yet connected to the systems will provide significant near-term growth."

The Partnership intends to finance the Anadarko Acquisition with approximately $220 million of cash on hand, the borrowing of $246 million on its revolving credit facility and the issuance of 449,129 common units to Anadarko at an implied price of approximately $54.55 per unit. The transaction will be immediately accretive to the Partnership, with the acquisition price representing an approximate 7.6 times multiple of the assets' forecasted 2013 earnings before interest, taxes, depreciation and amortization ("EBITDA"). The transaction is expected to close on March 1, 2013.

The Partnership intends to finance the Third-Party Acquisition with borrowings on its revolving credit facility. The transaction will be immediately accretive to the Partnership, with the acquisition price representing an approximate 9.7 times multiple of the assets' forecasted 2013 EBITDA. The acquisition is expected to close by March 15, 2013.

The terms of the Anadarko Acquisition were unanimously approved by the board of directors of the Partnership's general partner and by the board's special committee, which is comprised entirely of independent directors. The special committee engaged Evercore Partners to act as its financial advisor and Bracewell & Giuliani LLP to act as its legal advisor.

FOURTH QUARTER AND FULL-YEAR 2012 RESULTS

The Partnership and Western Gas Equity Partners, LP (NYS: WGP) ("WGP") today also announced fourth-quarter and full-year 2012 financial and operating results.

"WES delivered an 18% distribution growth rate while maintaining healthy coverages and received its second investment-grade credit rating, and we successfully launched the initial public offering of WGP," said President and Chief Executive Officer, Don Sinclair. "While we believe the challenges in the NGL markets that we experienced in 2012 will continue in 2013, our high-quality portfolio, combined with our ability to consistently execute accretive acquisitions from our sponsor, positions us to deliver consistent growth."

WESTERN GAS PARTNERS, LP

Net income (loss) available to limited partners for 2012, which includes results from the additional 24% interest in Chipeta Processing, LLC ("Chipeta") beginning August 1, 2012, totaled $78.9 million, or $0.84 per common unit (diluted), with full-year 2012 Adjusted EBITDA ⁽¹⁾ of $327.7 million and full-year 2012 Distributable cash flow ⁽¹⁾ of $264.4 million.

Net income (loss) available to limited partners for the fourth quarter of 2012 totaled $(26.6) million, or $(0.27) per common unit (diluted), with fourth-quarter 2012 Adjusted EBITDA ⁽¹⁾ of $83.3 million and fourth-quarter 2012 Distributable cash flow ⁽¹⁾ of $67.2 million.

The Partnership paid a quarterly distribution of $0.52 per unit for the fourth quarter of 2012 on February 12, 2013, to unitholders of record at the close of business on February 1, 2013. This distribution represents a 4% increase over the prior quarter and an 18% increase over the fourth-quarter 2011 distribution of $0.44 per unit. The full-year 2012 distribution of $1.96 per unit represents an 18% increase over the full-year 2011 distribution. The fourth-quarter 2012 Coverage ratio ⁽¹⁾ was 1.02 times, based on the $0.52 per unit distribution and including distributions on the 8.9 million common and general partner units sold to WGP after its initial public offering ("IPO") in December 2012.

Total throughput attributable to the Partnership for the fourth quarter of 2012 averaged 2.5 Bcf/d, flat with the prior quarter and 8% above the fourth quarter of 2011. For the full-year 2012, throughput attributable to the Partnership averaged 2.4 Bcf/d, 9% above the prior year average. These results include the net throughput attributable to the Mountain Gas Resources ("MGR") and Bison assets acquired from Anadarko for all periods of comparison, throughput attributable to the Platte Valley system beginning March 2011, and throughput attributable to the recently acquired 24% interest in Chipeta beginning August 2012.

Excluding acquisitions, capital expenditures attributable to the Partnership on a cash basis totaled $154.7 million during the fourth quarter of 2012. Of this amount, maintenance capital expenditures were approximately $6.2 million, or 7% of Adjusted EBITDA ⁽¹⁾. For the full-year 2012, capital expenditures attributable to the Partnership totaled $423.8 million on a cash basis, excluding acquisitions and including the capital expenditures associated with the 24% interest in Chipeta beginning August 1, 2012. Capital expenditures attributable to the Partnership on an accrual basis and excluding acquisitions totaled $162.8 million during the fourth quarter of 2012 and $491.0 million for the full-year 2012.

WESTERN GAS EQUITY PARTNERS, LP

As of December 31, 2012, WGP indirectly owned the 2% general partner interest and 100% of the incentive distribution rights in WES and 49,296,205 WES common units. WGP presents its results consolidated with those of WES. WGP closed its IPO on December 12, 2012, and the results for the periods prior to the IPO are therefore attributable to subsidiaries of Anadarko.

Net income (loss) available to limited partners for the 20-day period beginning on the date the IPO closed through December 31, 2012, totaled $(9.8) million, or $(0.04) per common unit (diluted) for the fourth-quarter and full-year 2012, based on the number of common units issued in connection with the IPO.

Net income (loss) attributable to WGP for the fourth-quarter and full-year 2012 totaled $(1.5) million and $34.0 million, respectively. Included in reported net income (loss) for the fourth-quarter and full-year 2012 is income tax (benefit) expense attributable to the pre-IPO period. Income generated by WGP is not subject to federal income tax subsequent to the IPO.

WGP previously paid a prorated quarterly distribution of $0.03587 per unit for the fourth quarter of 2012 on February 21, 2013, to unitholders of record at the close of business on February 1, 2013. This distribution was the first paid by WGP and corresponds to a quarterly distribution of $0.165 per unit, or $0.66 per unit on an annualized basis. The initial distribution was prorated for the 20-day period from the date of the closing of WGP's IPO on December 12, 2012, through the end of the quarter, pursuant to the terms of WGP's partnership agreement.

WGP received distributions from WES of $8.0 million attributable to the 20-day period following its IPO and subsequently paid out $7.9 million in distributions for the prorated fourth quarter of 2012.

2013 WES OUTLOOK

Based on the current forecast, which includes the effects of the Anadarko Acquisition and the Third-Party Acquisition, WES's Adjusted EBITDA ⁽¹⁾ for 2013 is expected to be between $410 million and $450 million. Total cash basis capital expenditures excluding acquisitions are expected to be between $550 million and $600 million with maintenance capital expenditures expected to be between 9% and 12% of Adjusted EBITDA ⁽¹⁾. The 2013 forecast includes the completion of the Partnership's Brasada and Lancaster plants, which will serve the Eagleford shale and the DJ Basin. WES continues to expect to meet its previously stated goal of no less than 15% distribution growth in 2013. Details surrounding the 2013 forecast will be provided during the Partnership's earnings conference call.

2013 WGP OUTLOOK

Based on the previously announced expectation of no less than 15% distribution growth at WES, WGP expects that its 2013 distribution growth will be no less than 33%.

CONFERENCE CALL TOMORROW AT 11 A.M. CST

Western Gas Partners and Western Gas Equity Partners will host a joint conference call on Thursday, February 28, 2013, at 11 a.m. Central Standard Time (12 p.m. Eastern Standard Time) to discuss fourth-quarter and full-year 2012 results and the outlook for 2013. To participate via telephone, please dial 877.621.4819 and enter participant code 88744809. Please call in 10 minutes prior to the scheduled start time. To access the live audio webcast of the conference call and slide presentation, please visit www.westerngas.com. A replay of the call will also be available on the website for approximately two weeks following the conference call.

Western Gas Partners, LP ("WES") is a growth-oriented Delaware master limited partnership formed by Anadarko Petroleum Corporation to own, operate, acquire and develop midstream energy assets. With midstream assets in East, West and South Texas, the Rocky Mountains and the Mid-Continent, the Partnership is engaged in the business of gathering, processing, compressing, treating and transporting natural gas, condensate, natural gas liquids and crude oil for Anadarko and other producers and customers.

Western Gas Equity Partners, LP ("WGP") is a Delaware limited partnership formed by Anadarko to own three types of interests in WES: (i) the 2.0% general partner interest, through WGP's 100% ownership of WES's general partner; (ii) all of the incentive distribution rights in WES; and (iii) a significant limited partner interest in WES.

For more information about Western Gas Partners, LP and Western Gas Equity Partners, LP, please visit www.westerngas.com.

This news release contains forward-looking statements. Western Gas Partners and Western Gas Equity Partners believe that its expectations are based on reasonable assumptions. No assurance, however, can be given that such expectations will prove to have been correct. A number of factors could cause actual results to differ materially from the projections, anticipated results or other expectations expressed in this news release. These factors include the ability to meet financial guidance or distribution growth expectations; the ability to safely and efficiently operate WES's assets; the ability to obtain new sources of natural gas supplies; the effect of fluctuations in commodity prices and the demand for natural gas and related products; the ability to meet projected in-service dates for capital growth projects; and construction costs or capital expenditures exceeding estimated or budgeted costs or expenditures, as well as other factors described in the "Risk Factors" sections of WES's most recent Form 10-K and WGP's Form S-1 registration statement filed with the Securities and Exchange Commission and other public filings and press releases by Western Gas Partners and Western Gas Equity Partners. Western Gas Partners and Western Gas Equity Partners undertake no obligation to publicly update or revise any forward-looking statements.

Western Gas Partners, LP Reconciliation of GAAP to Non-GAAP Measures

Below are reconciliations of the Partnership's Distributable cash flow (non-GAAP) to net income (loss) attributable to Western Gas Partners, LP (GAAP) and Adjusted EBITDA (non-GAAP) to net income (loss) attributable to Western Gas Partners, LP (GAAP) and net cash provided by operating activities (GAAP), as required under Regulation G of the Securities Exchange Act of 1934. Management believes that the Partnership's Distributable cash flow, Adjusted EBITDA and Coverage ratio are widely accepted financial indicators of the Partnership's financial performance compared to other publicly traded partnerships and are useful in assessing the Partnership's ability to incur and service debt, fund capital expenditures and make distributions. Distributable cash flow, Adjusted EBITDA and Coverage ratio, as defined by the Partnership, may not be comparable to similarly titled measures used by other companies. Therefore, the Partnership's Distributable cash flow, Adjusted EBITDA and Coverage ratio should be considered in conjunction with net income and other performance measures (as applicable), such as operating income (loss) or cash flows from operating activities.

Distributable Cash Flow

The Partnership defines Distributable cash flow as Adjusted EBITDA, plus interest income, less net cash paid for interest expense (including amortization of deferred debt issuance costs originally paid in cash, offset by non-cash capitalized interest), maintenance capital expenditures and income taxes.

⁽¹⁾ Includes $56.2 million and $69.8 million of equity-based compensation associated with the Western Gas Holdings, LLC Equity Incentive Plan, as amended and restated, paid and contributed by Anadarko during the three months and year ended December 31, 2012, respectively.

⁽²⁾ Includes the Partnership's 51% share prior to August 1, 2012, and 75% share after August 1, 2012, of depreciation, amortization and impairments; other expense; cash paid for maintenance capital expenditures; and other income attributable to Chipeta.

⁽³⁾ Net of a prior period adjustment reclassifying approximately $0.7 million from capital expenditures to operating expenses for the year ended December 31, 2012.

⁽⁴⁾ Excludes income of $0.4 million and $0.6 million for the three months ended December 31, 2012 and 2011, respectively, and $1.6 million for each of the years ended December 31, 2012 and 2011, related to a component of a gas processing agreement accounted for as a capital lease.

⁽⁵⁾ Reflects distributions of $0.52 and $1.96 per unit declared for the three months and year ended December 31, 2012, respectively.

Western Gas Partners, LP Reconciliation of GAAP to Non-GAAP Measures, continued

Adjusted EBITDA

The Partnership defines Adjusted EBITDA as net income (loss) attributable to Western Gas Partners, LP, plus distributions from equity investees, non-cash equity-based compensation expense, expense in excess of the expense reimbursement cap provided in the omnibus agreement (which cap is no longer effective), interest expense, income tax expense, depreciation, amortization and impairments, and other expense, less income from equity investments, interest income, income tax benefit, and other income.

⁽¹⁾ Includes $56.2 million and $69.8 million of equity-based compensation associated with the Western Gas Holdings, LLC Equity Incentive Plan, as amended and restated, paid and contributed by Anadarko during the three months and year ended December 31, 2012, respectively.

⁽²⁾ Includes the Partnership's 51% share prior to August 1, 2012, and 75% share after August 1, 2012, of depreciation, amortization and impairments; other expense; and other income attributable to Chipeta.

⁽³⁾ Excludes income of $0.4 million and $0.6 million for the three months ended December 31, 2012 and 2011, respectively, and $1.6 million for each of the years ended December 31, 2012 and 2011, related to a component of a gas processing agreement accounted for as a capital lease.