WalMart Going Solar.

On his blog, Joel Makower outlines the hig points of a confidential RFP issued by Wal-Mart for solar installations at its stores in five states, including California. According the RFP, Wal Mart has set a goal of reducing its greenhouse gas emissions by 30% in the next five years.

According to Makower, this is the "largest procurement of solar ever proposed."

This move could be as much about good press as it is about good business. Wal Mart has been getting brutalized in a union-backed public relations campaign and it recently fired its head of marketing after deciding a change of direction was needed.

The RFP requires proposals to be submitted by January 5.

Wal-Mart's Solar Energy Vision [Joel Makower]