Denver Relief is considered a medium-size grower, and it is based in a 13,000-square-foot (1,200 sq m) warehouse, where 2,000 pot plants require 62,000 watts of power and 2,000 gallons (7,570 liters) of filtered water each day.
http://business.time.com/2013/01/08/187000-pounds-of-marijuana-annually-legal-pot-business-to-bloom-in-washington/
wrong thread:)