Yale study: Marijuana ‘legalization may be an opportunity to reduce carbon pollution’
“Policymakers have a unique opportunity to incorporate climate risk assessments into their state marijuana licensing schemes and to require indoor growers to use only climate-friendly energy generation.”
http://www.yaleclimateconnections.org/2015/06/grass-isnt-green-yet/
To create perfect growing conditions for their crops, indoor marijuana farmers currently use as much electricity as two million average U.S. homes. And some illegal growers use highly-polluting gas generators rather than plugging into the grid.