SEMCO ENERGY is owned by energy investment firm Continental Energy Systems through its Cap Rock Holding unit. Alaska and Michigan have more in common than a cold climate. SEMCO ENERGY serves approximately 410,000 natural gas consumers in both states. The company's main subsidiary is utility SEMCO ENERGY Gas, which distributes gas to about 280,000 customers in 24 Michigan counties. SEMCO's ENSTAR Natural Gas unit distributes gas to about 130,000 customers in and around Anchorage, Alaska. The company's unregulated operations include propane distribution in Michigan and Wisconsin; pipeline and storage facility operation; and information technology outsourcing.

In 1976 the cooperative changed its name from Colquitt County Rural Electric Company to Colquitt EMC. The utility is the largest EMC in south Georgia with some of the lowest electric rates in the state.There's no quit in the electric service to Colquitt and surrounding counties in Georgia, thanks to Colquitt Electric Membership Corporation (Colquitt EMC). The consumer-owned non-profit utility distributes electricity to more than 41,000 members in Berrien, Brooks, Colquitt, Cook, Lowndes, Tift, and Worth counties. Colquitt EMC distributes electricity via more than 8,020 miles of power line.

Let's cut right to the point: construction materials and mining used to be the lifeblood of Knife River Corporation, but in recent years, its energy and utility operations have grown to be the largest portion of its business. Oil and natural gas production, power transmission, pipelines and power utilities now dominate Knife River's balance sheet. But don't count out its construction services division, which continues to produce record earnings. Knife River has operations in Alaska, Hawaii, Oregon, California, Idaho, Minnesota, Montana, North Dakota, Oregon, Texas, and Wyoming. The company is a subsidiary of MDU Resources Group, Inc.

Puerto Rico Electric Power Authority (PREPA) is prepared to serve an entire island nation. Founded in 1941, the government-owned utility is the sole electricity distributor for Puerto Rico, where it serves approximately 1.4 million residential and business customers. PREPA owns five primarily fossil-fueled power plants that give it nearly 5,800 MW of generating capacity, and it has more than 30,000 miles of transmission and distribution lines. In order to keep up with increasing demand, the Puerto Rican government has allowed independent power producers to build cogeneration plants on the island to sell power to PREPA.

Central Vermont Public Service Corporation, together with its subsidiaries, operates as an electric utility company. The company engages in the purchase, production, transmission, distribution, and sale of electricity. It sells electricity to residential, commercial, and industrial customers. As of December 31, 2009, the company served approximately 159,000 retail customers in Vermont. Its wholly owned plants included 20 hydroelectric generating facilities with an aggregate nameplate capacity of 45.3 megawatts; and 2 oil-fired gas turbines with a combined nameplate capacity of 26.5 megawatts. The company also owns, buys, sells, and leases real and personal property and interests therein related to the utility business; and sells and rents electric water heaters in Vermont and New Hampshire. In addition, it has joint ownership interests in electric generating and transmission facilities. The company was founded in 1929 and is based in Rutland, Vermont.

Bonneville Power Administration (BPA) keeps the lights on in the Pacific Northwest. The US Department of Energy power marketing agency operates a transmission grid (with more than 15,000 miles of high-voltage lines) that delivers about 35% of the electrical power consumed in the region. The electricity that BPA wholesales is generated primarily by 31 federal hydroelectric plants and one private nuclear facility. BPA also purchases power from other hydroelectric, gas-fired, and wind and solar generation facilities in North America. Founded in 1937, BPA sells power to more than 140 primary customers, mainly public and investor-owned utilities in the Pacific Northwest.

Ozocan can meet the ozone generator and purifier needs of its water and waste water clients. Ozocan (formerly Hankin Water Technologies) provides water-purification equipment for aquaculture, commercial aquariums, drinking-water treatment, industrial-waste treatment, and other uses. The company has also supplied ozone to laminating plants to speed up the application of polyethylene to paper. Ozone systems have been used to treat drinking water for decades, in both municipal and commercial bottling plants, and have been widely used in swimming pools since the 1950s. The company was established in 1954.

Southern Water Services provides water to about 1 million households in South East England. In addition, Southern Water provides wastewater services to about 2 million households. The company has 90 water treatment works, 150 water supply booster stations, and another 370 wastewater treatment works. It maintains a network of some 13,600 km of water mains. The utility also recycles sewerage sludge for use in agriculture. Its area of operation includes Kent, Sussex, Hampshire, and the Isle of Wight. Southern Water is owned by Greensands Investments Limited, which is owned by infrastructure investors and pension funds.

Puget Energy is one of Washington State's largest utilities. Its electricity supply and transmission business, Puget Sound Energy, provides electricity to more than 1 million customers and natural gas to about 749,000 customers in western Washington. The utility owns fossil-fueled and hydroelectric plants as well as wind farms with a cumulative total of about 5,050 MW of capacity. In 2009, Puget Holdings LLC, a consortium led by Australian bank unit Macquarie Infrastructure Partners, acquired Puget Energy for $7.4 billion. The deal strengthens Puget Energy's access to cash to pay down debt and for future growth.

Delta Natural Gas Company, Inc. distributes or transports natural gas in central and southeastern Kentucky. It operates through two segments, Regulated and Non-Regulated. The Regulated segment sells and distributes natural gas to its retail customers primarily in 23 rural counties. This segment also transports gas to industrial customers on its system who purchase gas in the open market, as well as transports gas on behalf of local producers and other customers not on its distribution system. The Non-Regulated segment purchases natural gas in the open market, primarily from Kentucky producers, and resells this gas to industrial customers on its distribution system and to others not on its system. This segment also produces natural gas that is sold to Delgasco for resale in the open market. Delta Natural Gas Company, Inc. owns approximately 2,500 miles of natural gas gathering, transmission, distribution, storage, and service lines; and holds leases for the storage of natural gas under 8,000 acres located in Bell County, Kentucky. It serves approximately 37,000 customers. Delta Natural Gas Company, Inc. was founded in 1949 and is headquartered in Winchester, Kentucky.

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