St Louis, MS, U.S.A. --- (METERING.COM) --- October 28, 2008 - The U.S. Department of Energy (DOE) has named UE's Pure Power™ program the "most successful" New Green Power Program of the year.

Citing Pure Power as the largest green-pricing programs in the Midwest with its nearly 4,000 customers, the DOE recognized the renewable energy offering both for "quantitative criteria, such as customer participation and green power sales, and qualitative criteria, such as overall value provided to customers."

UE is one of four companies recognized for their "commitment to programs that allow consumers to purchase clean green energy options, while also integrating sustainable energy strategies that make good business sense."

Pure Power is the company's Green-e® Certified voluntary renewable energy program. Pure Power residential customers pay an additional 1.5 cents/kWh on their monthly bills. These funds are then used to purchase and retire renewable energy credits (RECs) from regional wind farms, biomass resources and other green, renewable energy sources.

Residential customers can also purchase "blocks" of RECs for $15 each. Each block represents 1,000 kWh of power from renewable sources. Large commercial and industrial customers participate by purchasing blocks only.

To date, using a grassroots approach coordinated by 3Degrees Energy, UE has purchased RECs equal to 37,000 MWh of renewable energy. The company projects demand will exceed 50,000 MWh by the end of the year. More than 4,000 residential customers are currently enrolled in Pure Power, along with large and small commercial and industrial companies, as well as entire communities like St Louis City, the City of Clayton and the western Missouri town of Plattsburg.

"It is very gratifying whenever UE is recognized nationally for its leadership, but it is especially gratifying to receive an award recognizing Pure Power," says UE President and CEO Tom Voss. "We knew going in that a lot of face-to-face communication would be needed to help customers understand our REC-based program. I am very pleased to see the efforts of UE employees and 3Degrees paying off in Pure Power's continued growth."

UE, a subsidiary of Ameren Corporation, provides electricity and natural gas to 1.2 million customers in Missouri.