It’s a perfect marriage of sorts. Commercial cannabis growers using the CO2 that brewers emit naturally during fermentation and normally vent into the air, adding a greenhouse gas to the atmosphere..
The State of Colorado and three Colorado business, Earthly Labs, Denver Beer Co., and The Clinic have started a pilot program to establish the first commercial exchange of recovered carbon dioxide. The pilot program captures and stores excess carbon dioxide produced during the beer fermentation process for later reuse by cannabis cultivators that require carbon dioxide to stimulate plant growth during cultivation.
Denver Beer Co., Colorado’s seventh-largest craft brewery by volume, is testing technology to capture carbon dioxide into a refrigerator-sized device which purifies and chills it into a liquid. The recovered CO2 is taken to an indoor cannabis grow where it is released to speed photosynthesis.
Sounds like a good collaboration beer idea!
More details here