As they've done for some Bears, Cubs and White Sox. games last year, Constellation Energy has announced that they will secure renewable energy credits (RECs) to match  the electricity usage generated at the United Center with wind power before, during and after all Chicago Bulls and Blackhawks games.

As a prelude to Earth Day, Constellation will sponsor "green" games for the Blackhawks on April 1 and the Bulls on April 2 by purchasing Green-e Energy Certified renewable energy certificates (RECs).

Read the full press release