The Washington, Gas, And Electric Wind Porgram allows you to choose 50% or 100% wind power for your home. All you have to do is sign up for a 1 or 2 year contract.
How does it work? You still pay the same amount of fees for distribution of energy to BGE you have always, but the energy itself is bought from WGES. WGES then puts the money to their network of wind farms to produce the amount of energy you consume.
What's it cost? Right now, WGES charges 9.3¢/kWh for 50% wind, and 9.6¢/kWh for 100% wind.
How does that compare with BGE? Currently BGE is at 9.037¢/kWh, but will be raising to 9.462¢/kWh starting on June 1st, 2012. That means that you will then be paying MORE than if you had switched to wind power.