The Contra Costa Times is reporting that Safeway is now the largest corporate purchaser of green energy in California, after it announced it was buying an additional 174,000 megawatts of wind energy-- enough to power its corporate headquarters and all of its San Francisco stores.

The supermarket chain estimates that this additional commitment to wind power will remove 110,000 tons of carbon dioxide from the air.

Safeway goes green in energy purchase [Contra Costa Times]