Dive summary:

• The Walgreens drugstore chain has written a prescription for not demanding – and possibly even supplying – energy at a new store it will build in Evanston, Ill.
• The store will be a playground for company engineers from the corporate headquarters in  Deerfield, and they will track the store's energy usage for its first year to see if they have usable prototype.
• The store will use more than 800 roof-top solar panels, two wind turbines, stable geothermal temperatures from 550 feet below ground and carbon-dioxide refrigerant along with LED lighting and other technologies.

From the article:

Engineering estimates--which can vary due to factors such as weather, store operations and systems performance- indicate that the store will use 200,000 kilowatt hours per year of electricity while generating 256,000 kilowatt hours per year. ...