Talked to one of the companies involved in this conference a couple of weeks ago. If you're located in the Washington, D.C., area, and you have shoveled out by late April, there is a Green IT Economic Summit being held in Tysons Corner, Va., on April 22, 2010. I have nothing to do with the event, but there are quite a few companies attending from a sponsorship standpoint, so might be a good place to get questions answered.
The speakers include Forrester analyst Chris Mines, whom I consider one of the foremost authorities on the role that green business and corporate sustainability factors play for IT organizations. There's an early-bird registration special being run through March 15, 2010.