SCS Tracer Environmental traces its financial success to its large portfolio of environmental engineering, consulting, and monitoring services. Among the firm's specialties are ambient air monitoring, counter-terrorism support, environmental advisory services and environmental construction, permitting and compliance, and risk management and safety, and research and development. In addition to private sector clients, the company also works on contracts for the federal government. SCS Tracer's staff includes atmospheric scientists, engineers, and meteorologists. The firm was named Tracer Environmental Sciences & Technologies until being acquired by SCS Engineers in late 2009.

Spice wants to be an essential ingredient in the UK's utility industry. Through its seven business units, the company provides a variety of outsourced infrastructure-related support services, predominately to the utility sector. Its services include billing, consulting, management, engineering, and construction. Spice also offers gas services to commercial and industrial companies; facilities services to retail, commercial, and insurance sectors; and electricity services to several industries. The firm's customers have included utilities such as Yorkshire Water and EDF Energy, as well as British Airways and Siemens.

OGE Energy is the holding company for the largest electric utility in Oklahoma, but its largest revenue producer is its energy marketing and natural gas transmission unit, OGE Energy Resources. OGE owns Oklahoma Gas and Electric (OG&E), a public utility with almost 777,000 retail and wholesale customers in Oklahoma (including Oklahoma City) and a bit of western Arkansas. OG&E owns coal- and gas-fired power plants that generate 6,420 MW of capacity. Subsidiary Enogex operates 7,900 miles of natural gas gathering and transportation pipeline. The company also provides physical, asset, financial management services through marketing unit OGE Eenergy Resources.

Kelda is a Norse word meaning source of water, and Yorkshire consumers count on the UK's Kelda Group as the source for water and wastewater services. The group's primary subsidiary, Yorkshire Water Services, serves some 1.7 million residential customers, representing more than 4.8 million people, and approximately 130,000 business customers. Its Loop subsidiary provides customer relationship management services for Yorkshire Water and other utilities. In addition, Kelda is engaged in real estate development through its KeyLand unit which develops or disposies of brownfield sites. In 2008 Kelda was acquired by a consortium of investment companies made up of Citigroup, GIC, Infracapital and HSBC.

Ohio Valley Electric and its subsidiary, Indiana-Kentucky Electric, generate power in the Ohio River Valley region. The company operates two coal-fired plants with collectively about 2,400 MW of generating capacity. Ohio Valley Electric's Kyger Creek Plant at Cheshire, Ohio, and Indiana-Kentucky Electric's Clifty Creek Plant at Madison, Indiana are linked by 776 miles of transmission lines. Most of Ohio Valley Electric's power goes to its shareholders, which include American Electric Power (39%), Buckeye Power Generating, LLC (18%), and Duke Energy Ohio (9%).

City of Tacoma Department of Public Utilities was fated to fulfill the electric and water desires of the City of Destiny's dwellers. The municipal utility's Tacoma Power unit generates, transmits, and distributes electricity to more than 166,000 homes and businesses in Tacoma, Washington. Tacoma Water serves about 96,000 customers; the division's water supply comes from wells and the Green River Watershed. Tacoma Public Utilities also oversees Tacoma Rail, a freight-switching railroad with some 200 miles of track, and the Click! Network, a high-speed data network that uses fiber-optic cable.

Northumbrian Water Group (NWG) provides water utility services in both northern and southern England. The company's primary subsidiary, Northumbrian Water Limited, provides water and wastewater services to 2.6 million people in North East England under the Northumbrian Water brand; it provides water to 1.8 million people in South East England, where it operates as Essex and Suffolk Water. NWG also controls a number of special purpose companies with contracts in Scotland, Ireland, and Gibraltar. The company's SA Agrer NV unit conducts project work in developing countries, The Ontario Teachers' Pension Plan controls 26% of the 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.

Alkane Energy pursues the arcane task of extracting methane gas from abandoned coal mines in the UK and Germany for the dual purposes of direct supply to industrial clients and for on-site power generation. A renewable energy company, Alkane aims to reduce greenhouse gas emissions, through the capturing of coalbed methane and its conversion to energy. The company designs, builds, and services containerized methane treatment plants and electricity generation facilities that use biogas, landfill gas, sewage gas, and coal mine methane. Alskane operates seven biogas-to-electricity sites in the UK and one in Germany.

WGL Holdings, Inc. engages in the delivery and sale of natural gas, and provides energy-related products and services in the District of Columbia, Maryland, Virginia, and Delaware. WGL Holdings, Inc. operates through three segments: Regulated Utility, Retail Energy-Marketing, and Design-Build Energy Systems. The Regulated Utility segment delivers natural gas to retail customers, as well as sells natural gas to customers who have not elected to purchase natural gas from unregulated third-party marketers. The Retail Energy-Marketing segment sells natural gas and electricity directly to residential, commercial, and industrial customers. As of September 30, 2009, it served approximately 151,000 residential, commercial, and industrial natural gas customers, and 113,000 electricity customers. The Design-Build Energy Systems segment focuses on upgrading the mechanical, electrical, water, and energy-related systems of government and commercial facilities by implementing traditional, as well as alternative energy technologies. WGL Holdings, Inc. was founded in 1848 and is headquartered in Washington, District of Columbia.

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