Jack Holmes Joins NGP

Jack Holmes has joined Natural Gas Partners as a venture partner. He retired in December as CEO of Syntroleum Corporation.

PRESS RELEASE

Natural Gas Partners (“NGP”), the leading private equity firm in the energy industry, today announced that John B. (Jack) Holmes, Jr. has joined the firm as a Venture Partner. In December, 2007, Mr. Holmes retired as Chief Executive Officer of Syntroleum Corporation. Mr. Holmes has had a distinguished career as a leader in the energy industry spanning almost four decades.

Prior to joining Syntroleum in 2002, Mr. Holmes was a senior executive at a number of significant energy companies. From 1999 through 2002, he served in several capacities at El Paso Corporation. From 2001-2002, he was Chief Operating Officer of El Paso's Merchant Energy division. From 1999-2001, he was President of El Paso Production Company. Prior to El Paso, Mr. Holmes led Sonat Exploration Company as its President and Chief Executive Officer from 1998-1999 until its acquisition by El Paso. From 1986 to 1998, he served as President and Chief Operating Officer of Zilkha Energy Company, which under his leadership grew from a modest value in 1986 to $1.3 billion in 1998 when it was acquired by Sonat.

Before joining the original executive team at Zilkha, Mr. Holmes held numerous executive positions in the energy business with several independent energy companies after a distinguished decade of service at Exxon Company, USA from 1969-1979. He holds a degree in Chemical Engineering from the University of Mississippi.

“NGP is honored that Jack Holmes has joined us as a Venture Partner,” said Kenneth Hersh, NGP's Managing Partner and CEO. “Jack is a talented executive with an incredible track record at both emerging and established companies. He has seen it all in this business. He has experience in leading young, growth companies through industry cycles as well as managing large, global energy enterprises. He has perhaps one of the deepest set of experiences of anyone in the energy industry today. He will be a valuable resource to NGP as well as our portfolio companies.”

Hersh continued, “The affiliation with Jack Holmes is yet another example of how NGP has built a world-class team of investment professionals poised to bring invaluable value-added resources to our portfolio companies. The combination of our Venture Partners and our Strategic Advisory Council, which is comprised of James Schlesinger, Chuck Williamson, and Pat Wood, furthers NGP's commitment to be the best private equity sponsor in the industry.”

Founded in 1988, Natural Gas Partners is a multi-billion dollar family of funds that invests private equity capital in oil and gas production, service and selected midstream companies. Natural Gas Partners is an affiliate of NGP Energy Capital Management, a $7.7 billion firm that invests in all sectors of the energy industry through its investment vehicles – Natural Gas Partners and its related co-investment funds, NGP Midstream and Resources, L.P., NGP Capital Resources Company (NASDAQ: “NGPC”) and NGP Energy Technology Partners, L.P.

Natural Gas Partners may be reached at 972-432-1440 or www.naturalgaspartners.com. NGP Energy Capital Management may be contacted at 972-432-1440 or www.ngpenergycapital.com.