Free beer Al Gore would approve of

Sign spotted Saturday at an eco-festival in Manhattan:

“Sign up for clean energy and drink free beer.”

Those who signed up for electricity from Community Energy, which owns three wind farms in New York and Pennsylvania, received tickets for four pints of Brooklyn Lager.

Brooklyn Brewery, itself, is one of the nation’s first wind-powered breweries, and gets is energy from Community Energy windmills.

[Via the New York Times, free registration.]