Southern Union Company, together with its subsidiaries, engages in the gathering, processing, transportation, storage, and distribution of natural gas in the United States. It operates in three segments: Transportation and Storage, Gathering and Processing, and Distribution. The Transportation and Storage segment engages in the interstate transportation and storage of natural gas in the Midwest and from the Gulf Coast to Florida. It also provides liquefied natural gas (LNG) terminalling and regasification services. The Gathering and Processing segment involves in gathering, treating, processing, and redelivering natural gas and natural gas liquids (NGLs) in Texas and New Mexico. It operates a network of approximately 5,500 miles of natural gas and NGL pipelines, 4 cryogenic processing plants with a combined capacity of 410 MMcf/d, and 5 natural gas treating plants with a combined capacity of 585 MMcf/d. The Distribution segment engages in the local distribution of natural gas in Missouri and Massachusetts. This segment serves approximately 550,000 residential, commercial, and industrial customers through local distribution systems consisting of 9,140 miles of mains, 6,185 miles of service lines, and 45 miles of transmission lines. Southern Union company was founded in 1932 and is based in Houston, Texas.

Manitoba Hydro-Electric (commonly called Manitoba Hydro) provides electricity to 532,000 customers in the province of Manitoba. Its power is generated from hydroelectric facilities capable of producing about 32 billion kilowatt-hours of electricity per year. Manitoba Hydro, which is owned by the government of Manitoba, also exports power to utilities and energy marketers in the US and other Canadian provinces. Through its Centra Gas subsidiary, the company distributes natural gas to 264,000 residential, commercial, and industrial customers in 100 communities in Manitoba.

Trans-Elect has elected itself as a cross-border power company. The independent transmission company owns and operates about 12,600 miles of high-voltage power lines in portions of Canada and the US. The company acts as a wholesale provider of electricity to distribution companies. It operates the former transmission assets of of US utility Consumers Energy; it is also part of an international consortium that operates the former transmission assets of Canadian power distributor TransAlta. The acquisitions were the first of their kind in the deregulating North American electricity market. Trans-Elect is also involved in several expansion projects in congested areas of the US grid.

First Wind, wind is the first and last item in its business model. The vertically integrated energy company (formerly UPC Wind) develops, owns, and operates wind energy plants in the Northeastern and Western US, and Hawaii. Its six projects in Hawaii, Maine, Vermont, New York, and Utah generate more than 500 MW of electricity. First Wind, which targets states with high energy prices, renewable energy requirements, and favorable wind conditions, plans to have more than 2,000 MW of capacity by the end 2014. The company was formed in 2002 by individuals experienced with building wind power plants in Italy. In 2010 First Wind began construction of its 102 MW Utah-based Milford Wind project.

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.

Denali Incorporated company specializes in fiberglass-reinforced composite products used to handle hazardous or valuable fluids. The company's Containment Solutions (CSI) unit makes underground fiberglass storage tanks for the petroleum and water and wastewater industries and above-ground steel storage tanks for the petroleum and automotive industries. Denali's Fabricated Plastics unit makes makes thermoplastic assemblies for corrosion applications, such as in tanks, piping, and ductwork.

Huntsville, Alabama residents don't have to hunt far to find gas, power, and water. Government's utility City of Huntsville Electric, Natural Gas and Water Systems provides all of these resources. Known as Huntsville Utilities, the company distributes electricity to more than 156.000 residential, commercial, and industrial customers in the city and surrounding areas; it also provides natural gas to 46,200 customers and water services to more than 82,000 customers. Huntsville Utilities buys electricity from the Tennessee Valley Authority. The utility's gas comes from Gulf of Mexico suppliers, and its water is pumped from underground aquifers and the Tennessee River.

Ormat Technologies is on an environmentally safe power trip, building geothermal as well as recovered energy power plants. Geothermal technology extracts hot water or steam that is vaporized and used to drive turbines. The fluid is then cooled and recycled back through the process, making it a clean and renewable energy source. Recovered energy utilizes heat produced in other industrial processes. The company, set up by Israel-based Ormat Industries, also sells power units for both types of plants, and sells fossil fuel powered turbo-generators with a capacity of between 400 watts and 4,000 watts. Ormat operates power plants (with a total of 518 MW of power) in Guatemala (2), Kenya, Nicaragua, and the US (10).

Black Hills Power has been delivering energy for over 125 years. It was formed through the consolidation of several smaller electric suppliers in the Black Hills of South Dakota, Montana and Wyoming. Black Hills Power is an investor-owned utility and is part of the Black Hills Corporation family. The utility serves 63,500 customers in 20 communities located in Western South Dakota, Northern Wyoming, and Southeastern Montana.Our customers use 1,501,805,000 kilowatt hours (kWh) of electricity at an average price of $0.0714 per kWh. Cost containment efforts and customer load growth have provided our customers with stable residential electricity costs and our commercial electricity costs that are declining in real terms, and have remained stable for the last 11 years.

Exelon Corporation company distributes electricity to 5.4 million customers in northern Illinois (including Chicago) and southeastern Pennsylvania (including Philadelphia) through subsidiaries Commonwealth Edison (ComEd) and PECO Energy. PECO also distributes natural gas to 485,000 customers. Subsidiary Exelon Generation holds the company's power plants, whose production capacity is just about 25,000 MW. About two-thirds of Generation's power is nuclear. Exelon Power Team is a top wholesale energy marketer, and Exelon Energy markets retail power and offers other energy-related services.

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