Portsmouth Water Limited serves an area of the UK extending from South East Hampshire to West Sussex, and from the River Meon to the River Arun. Portsmouth Water supplies about 160 million liters of water per day. Its 301,200 customers include industries, government establishments, and commercial businesses, as well as a residential population of 657,000. The company operates a 3,270-km network of water mains and about 20 treatment works. About 85% of the company's supply comes from groundwater sources.

AEA Technology has hitched its wagon to the climate change star, focusing on government and private sector efforts to combat global warming, develop low-carbon processes, and monitor carbon and emissions trading. AEA Technology offers consulting, program management, and emergency response services for commercial, government, and industrial customers. Other areas of expertise include agriculture, health, business innovation, and transport. It is a major provider of advisory services to the UK government on climate change issues and technologies.

Sumter Electric Cooperative shines more light across the Sunshine State. Known as SECO, the customer-owned utility distributes electricity to 170,000 homes and businesses across the rural Central Florida region comprised of Citrus, Hernando, Lake, Levy, Marion, Pasco, and Sumter counties. The coop operates 11,350 miles of electric lines and 47 substations. SECO's engineers design electrical facilities for new shopping centers and business parks and perform cost estimates for putting utilities underground in subdivisions. The co-op is a member of and receives generation and transmission services from Seminole Electric Cooperative.

The city-owned utility also produces and distributes steam to 250 customers along 14 miles of steam line. Lansing Board of Water and Light can chill out too. Its chilled water system delivers up to 10,000 tons of chilled water capacity to 14 customers to cool the interior of buildings in the downtown area. Lansing Board of Water and Light is the largest municipally owned utility in the state. It is also a major employer in the Lansing area.Letting off a little steam is a good thing for Lansing Board of Water and Light, which provides electricity to 96,000 residential, commercial, and industrial customers and water to about 55,000 customers in Lansing, Michigan

GeoSyntec Consultants provides services such as environmental management, geotechnical engineering, groundwater assessment and remediation, pollution prevention, and surface water management. The company operates from more than 30 offices, primarily in the US but also in Canada, Malaysia, and the UK. Its clients include Aerojet-General, AstraZeneca, Chevron, Delta Air Lines, FMC Corp., Georgia Power, Kimberly-Clark, Lockheed Martin, Pharmacia & Upjohn, and Shell Oil. Expanding its services in the water and natural resources segment, in 2010 Geosyntec acquired Rainwater Recovery, which focuses on rainwater harvesting technology.

Ferrostaal Incorporated is betting on the sun. The company is a subsidiary of the German industrial and heavy construction conglomerate Ferrostaal AG and provides its parent's alternative energy business in North America. It operates, with Solar Millennium, a joint venture called Solar Trust of America (STA) that concentrates on solar power generation. The International Petroleum Investment Company of Abu Dhabi bought a majority stake in Ferrostaal from MAN SE in 2009 and dropped the former parent company's brand from what had been called MAN Ferrostaal.

Powerco is the second-largest distributor of electricity and gas in New Zealand (behind state-owned Genesis Energy). Powerco's network extends across the upper central and lower central North Island and services to 415,000 customers. Its infrastructure represents about 46% of the gas connections and 16% of the electricity connections in New Zealand. The company's Powerco Transmission Services unit is a leading provider of wind farm connections to New Zealand's national grid. Powerco is 58%-owned by investment firm Queensland Investment Corp. and 42% by Australia-based infrastructure group Babcock & Brown Infrastructure.

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.

Coast Electric Power Association when it comes to providing residents in three southern Mississippi counties with electricity. The utility uses a 6,400-mile distribution network to serve its more than 76,000 members (the great majority or which are residential customers) in Hancock, Pearl River, and Harrison counties. Coast offers electronic fund transfer and average monthly payment plans and rebates on energy efficient home improvements. The utility's power is generated by South Mississippi Electric Power, an association of Coast and 10 other cooperatives. It partners with Touchstone Energy Cooperatives.

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.

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