When going green is dirty: Colorado's indoor cannabis farms produce 30% more greenhouse emissions

A model of life cycle greenhouse gas emissions from indoor cannabis cultivation across the US. Depending on the region, indoor cultivation results in between 2,283 and 5,184 kilograms of carbon dioxide per kilogram of dried flower.
In the five years after Colorado legalized recreational marijuana, indoor cannabis cultivation went from 1 percent of Denver's electrical consumption to 4 percent