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Environment

Indoor cannabis farms in US use more energy than all other agriculture

Two-thirds of US cannabis is grown indoors, requiring lights and temperature control that produce a vast amounts of emissions

By James Dinneen

5 February 2025

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An indoor cannabis farm in California

Shutterstock/Liudi Hara

Indoor cannabis cultivation in the US uses more energy than all outdoor agriculture in the country combined. This generates a large and growing emissions footprint that often goes unrecognised.

Consumers are led to believe that this is nature’s medicine and that its green in every sense of the word, says at Energy Associates, a consultancy in California. Theres lots of greenwashing.

More than 60 per cent of the 24,000 tonnes of cannabis grown…

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