Warburg Pincus LLC a leading global private equity investment institution

Duke Energy Corporation Electric utilty company supplying electricity for residential and commercial use

PG&E Corp Pacific Gas & Electric

American Electric Power Company, Inc. Electric utility company

Chevron Energy Company

Tokyo Electric Power Company

The Salt River Project

American Honda Motor Co., Inc. Established in Los Angeles, California, as the first overseas subsidiary of Honda Motor Co., Ltd.

Cenovus Energy Inc. An integrated oil company spun off from Encana Corporation in 2009; now owns most of the Canadian business of ConocoPhillips

Aramco Services Company

Donors