"Colo. Struggles With Marijuana's Huge Carbon Footprint"
"Colorado, which gets 60 percent of its electricity from coal-burning power plants, has set some of the more ambitious greenhouse gas reduction targets in the United States. It wants to cut emissions from its power plants 38 percent by 2030. ... One of the immediate problems of the target-setters, however, is that the state lacks plans from its fastest-growing, most energy-hungry users: owners of indoor marijuana farms."