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Integrys Energy Group, Inc. is a diversified energy holding company. The Company’s wholly owned subsidiaries provide products and services in both the regulated and nonregulated energy markets. In addition, it has a 34% equity interest in ATC (an electric transmission company operating in Wisconsin, Michigan, Minnesota, and Illinois). During the year ended December 31, 2012, the Company operates in five segments: natural gas utility segment, electric utility segment, electric transmission investment segment, Integrys Energy Services and the holding company and other segment. Its regulated natural gas utilities provide service to approximately 1,690,000 residential, commercial and industrial, transportation, and other customers.
Loup Power District is a Columbus, NE-based company in the Energy and Utilities sector.
Northstone Power Corp. is a Spruce Grove, AB-based company in the Energy and Utilities sector.
Edison International is a public utility holding company based in Rosemead, California. Its subsidiaries include Southern California Edison, and un-regulated non-utility assets Edison Mission Energy and Midwest Generation, power producers, and Edison Capital. Edison's roots trace back to Holt & Knupps, a company founded in 1886 as a provider of street lights in Visalia, California.
SGC Engineering is a Orono, ME-based company in the Energy and Utilities sector.