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UNS Energy is the Tucson, Arizona-based parent company of Tucson Electric Power (TEP) and UniSource Energy Services (UES). TEP serves more than 414,000 customers in and around Tucson, while UES provides natural gas and electric service to about 243,000 customers in northern and southern Arizona. UNS Energy is a subsidiary of Fortis, the largest investor-owned electric and gas distribution utility in Canada. Fortis' regulated utility subsidiaries serve more than 3 million customers across Canada and in the United States and the Caribbean. Fortis also owns non-regulated hydroelectric generation assets in Canada, Belize and upstate New York.
Ambit Energy is a residential electricity provider in Texas that offers seamless, affordable, and reliable electric service.
Petroleum Heat and Power Inc. is one of the leading companies in Energy and Utilities industry. Petroleum Heat and Power Inc. is based in Stamford, CT. You can find more information on Petroleum Heat and Power Inc. at www.petro.com
Jelec USA is a Houston, TX-based company in the Energy and Utilities sector.
Hoku Corporation is a diversified clean energy products and services company with three business units: Hoku Materials, Hoku Solar and Hoku Fuel Cells.