Doug Kimmelman

Douglas W. Kimmelman is the founder of Energy Capital Partners (ECP), which he established in April 2005 alongside co-founders Thomas Lane and Scott Helm — all three of them former senior executives in Goldman Sachs' investment banking division. He serves as ECP's Executive Chairman and is a member of the firm's Management and Investment Committee. ECP is headquartered in Summit, New Jersey, and has grown into one of the largest energy-infrastructure investors in the United States, with combined assets under management approaching $80–100 billion following its 2024 merger with Bridgepoint.

Before founding ECP, Kimmelman spent 22 years at Goldman Sachs, joining in 1983 in the firm's Pipeline and Utilities Department within Investment Banking. He was named a General Partner of Goldman in 1996 and remained focused exclusively on the energy and utility sectors. He helped lead the firm's push to become an intermediary in electricity-trading markets and played a leadership role in building Goldman's principal-investing business in power generation and related energy assets as U.S. electricity markets deregulated in the late 1990s.

Kimmelman holds a B.A. in Economics from Stanford University and an M.B.A. from the Wharton School at the University of Pennsylvania. He is active with Stanford's energy programs and is a recurring speaker at the Milken Institute Global Conference, ADIPEC, CNBC, and the POLITICO Energy Summit.

Philanthropically, Kimmelman — together with his four children — is developing one of the largest non-profit community academic and athletic centers in the country in Los Angeles, in honor of his late wife, in partnership with Tiger Woods's foundation (TGR Foundation) and the U.S. Tennis Association.

• Invests at institutional scale in power generation, utilities, renewable energy, energy storage, and energy-transition infrastructure — the opposite end of the spectrum from seed/angel investing.
• Thesis centers on a structural surge in U.S. electricity demand. Kimmelman argues that AI, industrial reshoring, LNG exports, electrification, and EV adoption are converging to drive power demand higher, saying electricity has "never had a shining moment like this in 30 years."
• On AI specifically: "AI will be a major driver of US economic and job growth over the coming decade, but not unless ample new electricity supplies are developed" — and that new megawatts must be built to supply AI rather than absorb existing excess capacity.
• Pursues large control transactions (take-privates, platform builds) and multi-billion-dollar strategic partnerships rather than minority venture stakes.
• Increasingly focused on building new power capacity to serve data centers, via mega-partnerships such as the ADQ ($25B) and KKR (up to $50B) vehicles.