ITC Holdings Corp. (NYSE: ITC) invests in the electricity transmission grid to improve electric reliability, expand access to markets, lower the overall cost of delivered energy and allow new generating resources to interconnect to its transmission systems. The largest independent electricity transmission company in the country, ITC operates high-voltage transmission systems in Michigan’s Lower Peninsula and portions of Iowa, Minnesota, Illinois, Missouri and Kansas, serving a combined peak load in excess of 25,000 megawatts through its regulated operating subsidiaries, ITCTransmission, Michigan Electric Transmission Company (METC), ITC Midwest and ITC Great Plains. ITC also focuses on new areas where significant transmission system improvements are needed through ITC Grid Development and its subsidiaries.

Cobb Electric Membership Corporation (Cobb EMC) makes sure that Cobb County, Georgia residents can cook corn on the cob (and anything else) using electric power and natural gas. The utility distributes electricity to about 196,000 residential, commercial, and industrial customers in Cobb County and four other north metro Atlanta counties. Cobb EMC operates about 10,400 miles of power lines. Its Cobb Energy Management unit is a for-profit affiliate that provides administrative and labor services to Cobb EMC and offers phone, Internet, and natural gas options for Cobb EMC's customers primarily through subsidiaries.

Severn Trent Services is intent on providing cleaner water for consumers around the globe. The company, a subsidiary of UK-based Severn Trent, provides water and wastewater purification services and products to utilities, bottling companies, and other clients, primarily in the US and the UK. Operations include water filtration and disinfection technologies, contract operations and maintenance, pipeline rehabilitation, and state-of-the-art residential metering products and services. Severn Trent Services' international management services unit supports all aspects of water and wastewater utility management.

Otter Tail covers a swath of businesses, from electric services and food-ingredient processing to manufacturing equipment, plastics, and health services. Its electric utility and energy activities are subsidiaries of Otter Tail, and its subsidiary Varistar holds Otter Tail's other interests. The electric utility has been the company's core effort since Otter Tail's start in 1907; it keeps the lights on for 129,000-plus residential, commercial, and industrial customers in Minnesota and the Dakotas. Otter Tail also makes PVC pipes, wind towers, metal parts, and processes potato flakes, as well as offers diagnostic medical equipment, and construction and trucking services.

HELIX Environmental Planning provides services such as biological resources management, construction monitoring, environmental program management, GIS Services, habitat restoration, landscape architecture, natural resource interpretation and public education services, and regulatory compliance reporting. The company operates mainly in California and the southwestern US, but it undertakes projects worldwide and has offices in Australia, Hong Kong, Mexico, the Northern Marianas Islands, Thailand, the US, Venezuela, and Zimbabwe. HELIX Environmental Planning was founded in 1991.

San Diego Gas & Electric (SDG&E) digs doling out energy in sandy Southern California. The company is a regulated utility that serves 1.4 million electricity customers and more than 840,000 natural gas customers in San Diego County and a portion of southern Orange County. The electric utility segment owns about 22,200 miles of power distribution lines, which serve about 25 communities; its 1,870 miles of transmission lines are managed by the California Independent System Operator. SDG&E also has limited power generation operations (it owns or contracts more than 5,500 MW of generating capacity). The gas utility operates almost 170 miles of transmission pipelines and about 8,420 miles of distribution mains.

Public Utility District No. 1 of Clark County (Clark Public Utilities) provides utility services to residents and businesses in Clark County, Washington. Clark Public Utilities transmits and distributes electricity to more than 182,000 customers; the company generates about half of its power supply at its 250-MW gas-fired power plant and purchases the rest from other generators, including the Bonneville Power Administration. Clark Public Utilities also distributes water to about 30,000 customers and collects and treats wastewater for the City of La Center, Washington.

Calvalley Petroleum searches below the plateau for fuel for its customers. The company focuses on exploring for and producing oil and natural gas at Block 9 in the Republic of Yemen. The company, which has about 16 working wells (more than 50 have been drilled), produces some 5,000 barrels of oil each day. Its subsidiary Calvalley Petroleum (Cyprus) Ltd. is the operator of the property, which includes about 552,000 acres of land in the Sayun-Masila basin. Calvalley Petroleum has a net proved plus probable reserves of 7.8 billion barrels of oil equivalent.

Sembcorp Industries can help your ship keep its shape or sell you electricity, among other things. Its 62%-held Sembcorp Marine subsidiary, the #2 offshore oil rig maker in the world, specializes in marine and offshore engineering services such as ship building and conversion, repair, and rig building. Sembcorp Utilities (also known as SembUtilities) is a leading retailer of electricity in Singapore; it also provides utility services and water management services (wastewater, reclaimed water, desalination, water for industrial use). Singapore's government (through investment company Temasek Holdings) controls 49% of Sembcorp Industries, which serves clients primarily in the Asia/Pacific region and in Europe.

TestAmerica Laboratories (formerly Severn Trent Laboratories) can tell you. It operates about 40 environmental testing laboratories and more than 30 service centers in the US. TestAmerica provides chemical, physical, and biological testing of air, drinking water, tissue, and solid waste. The company has developed technologies to test air for fire retardants, explosives, radiation, and source emissions. Its affiliates include environmental and geotechnical drilling firm TestAmerica Drilling, water sampling equipment and remediation pumping system provider QED Environmental Systems, and air quality analyst EMLab P&K).

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