Patrick R. Corcoran

Energy Capital Partners Management LP (ECP) is a private equity firm founded in 2005 by Doug Kimmelman. The firm is headquartered in Summit, New Jersey with an additional office in San Diego, Fort Lauderdale, New York City, Houston and Seoul .

Trans-Elect Development Co. LLC operates as an independent transmission company. The company was founded in 1999 and is headquartered in Chevy Chase, MD.

PLH Group, Inc. operates as a power line and pipeline construction firm. It offers directional drilling, station and facility construction, underground utility, and distribution and substation construction services. The company was founded in 2009 and is headquartered in Irving, TX.

Power Holdings, Inc. provides power distribution services. It offers services for residential, commercial and government sectors. The company is located in Palo Alto, CA

SunZia Southwest LLC provides power generated by renewable resources. It provides an option to develop power generation resources, including renewable resources and delivers the generation resources. The company is headquartered in Phoenix, AZ.

NorthWestern Corp. engages in generating and distributing electricity and natural gas. It operates through the following segments: Electric, Gas, and Other. The Electric segment includes generation, transmission, and distribution of electric utility business as a vertically integrated generation transmission and distribution utility. The Gas segment consists of production, storage, transmission, and distribution of natural gas. The Other segment consists of unallocated corporate costs. The company was founded in November 1923 and is headquartered in Sioux Falls, SD.