Constellation Energy today announced that its subsidiary, Constellation NewEnergy, has entered into a green electricity purchase agreement with the city of Evanston, Ill. As part of the agreement, Constellation NewEnergy will secure approximately 5.5 million kilowatt-hours of Renewable Energy Credits (RECs) to offset 20 percent of the city’s electricity usage. The secured RECs will help the city of Evanston replace the carbon emissions produced during the combustion of fossil fuels with clean, renewable wind generation. For example, one certified REC has the environmental impact of eliminating the emissions associated with one megawatt-hour of electricity produced by a fossil fuel generator.

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