Pennichuck Corporation, through its subsidiaries, engages in the collection, storage, treatment, and distribution of potable water for domestic, industrial, commercial, and fire protection service in New Hampshire and Massachusetts. The company also provides non-regulated water management services, including monitoring, maintenance, testing, and compliance reporting services for water systems of various towns, businesses, and residential communities. In addition, Pennichuck Corporation involves in real estate management and commercialization activities. The company was founded in 1852 and is headquartered in Merrimack, New Hampshire.

PJM Interconnection, which oversees a 56,350-mile section of the North American power transmission grid that spans across 13 northeastern and midwestern states and the District of Columbia. The regional transmission organization monitors and coordinates the movement of wholesale electricity in its service territory; its more than 560 members have a combined generating capacity of about 164,000 MW. Sanctioned by the Federal Energy Regulatory Commission, PJM is charged with ensuring fair competition among power purchasers, sellers, and traders; it also is responsible for the reliable delivery of distributed electricity to about 51 million consumers in its territory.

A2A S.p.A. municipal multi-utility supplies electricity, natural gas, and water and wastewater services to customers, mostly in the province of Milan. A2A's units operate power-generation plants with some 3,700 MW of capacity),. The company distributes electricity and natural gas to regulated customers, and wholesale electricity and gas to buyers. It also owns a fiber-optic network that covers the city. A2A is also a leading environmental service company, treating some 2.9 million tonnes of waste material.

Questar Gas provides retail natural gas-distribution service to almost 900,000 customers in Utah, southwestern Wyoming and a small portion of southeastern Idaho. Questar Gas is regulated by the Public Service Commission of Utah and the Wyoming Public Service Commission. Historically, about half of the natural gas sold to Questar Gas retail customers comes from Questar-owned supplies that are typically more-stably priced than gas purchased from other suppliers. Questar Gas is also one of the most efficient natural gas utilities in the nation. As a result, rates paid by Questar Gas customers are traditionally among the lowest in the country. A Questar Gas predecessor began serving customers in 1929. In the decades since, there has never been a major natural gas service interruption.

American Transmission Company is an entrepreneur in the US power grid business. Connecting electricity producers to distributors, American Transmission owns, operates, monitors, and maintains 9,400 miles of high-voltage electric transmission lines and 510 substations in portions of Illinois, Michigan, Minnesota, and Wisconsin. American Transmission is one of the first for-profit transmission companies, formed when the US market deregulated in the early 2000s. The company operates the former transmission assets of some of its shareholders. About 30 utilities, municipalities, municipal electric companies, and electric cooperatives in its service area have an ownership stake in American Transmission.

Suburban Propane Partners, L.P., through its subsidiaries, engages in the retail marketing and distribution of propane, fuel oil, and refined fuels, and the marketing of natural gas and electricity in the United States. The company’s Propane segment involves in the retail distribution of propane to residential, commercial, industrial, and agricultural customers, as well as wholesale distribution to large industrial end users. Its Fuel Oil and Refined Fuels segment engages in the retail distribution of fuel oil, diesel, kerosene, and gasoline to residential and commercial customers for use primarily as a source of heat in homes and buildings. The company’s Natural Gas and Electricity segment markets natural gas and electricity to residential and commercial customers in the deregulated energy markets of New York and Pennsylvania. Suburban Propane Partners, L.P. also sells, installs, and services various whole-house heating products, air cleaners, humidifiers, hearth products, and space heaters to the customers of propane, fuel oil, natural gas, and electricity products. As of September 26, 2009, it served approximately 850,000 residential, commercial, industrial, and agricultural customers through approximately 300 locations in 30 states located primarily in the east and west coast regions of the United States, including Alaska. Suburban Energy Services Group LLC serves as the general partner to Suburban Propane Partners, L.P. Suburban Propane Partners, L.P. was founded in 1945 and is based in Whippany, New Jersey.

Public Utility District No. 2 of Grant County, Washington, probably used up its initial budget before it could hire a team of branding and identity consultants. But a dour name does not stop the power provider (commonly referred to as Grant County PUD) from operating two hydroelectric power plants on the Columbia River (2,000 MW of generating capacity) and distributing electricity to the 40,000 residents of Washington's Grant County. The district, which was formed in 1938 and went into operation in 1942, also sells power to twelve Pacific Northwest utilities and is developing a residential fiber-optic data network.

AGL Energy emerged from the Australian Gas Light Company (Australia's oldest energy company, founded in 1837). AGL Energy is the country's major electricity retailer. It is also a top gas retailer and distributor in Australia. AGL Energy retails gas to 1.4 million customers and electricity to 1.8 million customers. Its residential and small business customers are located in New South Wales, South Australia, and Victoria, while its commercial and industrial customers are primarily in Queensland. AGL Energy is also a leading renewable energy company.

RPG Enterprises has more than 20 companies that span energy, retail, manufacturing, technology, and entertainment. The company's primary operations include electricity generation and distribution (through CESC Limited and Noida Power) and utility and telecommunications infrastructure development, as well as carbon black production and tire manufacturing. Other operations include supermarkets (Spencer's Hypermarket), retail music and health and beauty stores, software, telecommunications, pharmaceuticals, and music recording businesses. RPG Enterprises is controlled by the Goenka family; the company was formed in 1979 to hold the family's diversified business interests.

Tohoku Electric Power Company, Inc. (Tohoku Electric Power) serves nearly five million residences and one million commercial and industrial customers in the Tohoku region, which comprises the seven northernmost prefectures of Japan's main island of Honshu. The region contains 20% of Japan's land and 10% of its population, but accounts for only 6% of its GNP. With its mountainous landscape and heavy winter snow, Tohoku has lagged behind the rest of Japan in terms of industrial development. The region is still largely rural and is known as Japan's furusato or country home. However, the city of Sendai in Miyagi prefecture has boomed in recent years to rival the southern Japanese centers. Tohoku's climate and the inaccessibility of many parts of the region has presented Tohoku Electric Power with special problems.

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