Brewing Beer Makes CO2. The State Wants Craft Breweries To Capture Their Greenhouse Gas, And Make Some Money From It Too - Colorado Public Radio

It was a close call for Denver. But liquor stores are still open across Colorado despite COVID-19, and that means local breweries are still making beer.

In a large warehouse in the Sunnyside neighborhood, Denver Beer Co. makes around 20,000 barrels of booze a year. With all of that fermenting comes alcohol and carbon dioxide— a gas that contributes to climate change. The company used to let all of the CO2 bubble out of their brew and into the air.

“But our new technology allows us to hook a hose up to this fermentation tank and put it through a dryer, a filter, and a compressor,” said Charlie Berger, co-owner of Denver Beer Co. “It creates a liquid gas that we can actually use.”

Denver Beer Co’s Carbon Dioxide Boosts Plant Growth At The Clinic’s Marijuana Growing Operation — The beer brewing process creates carbon dioxide. At Denver Brewing Co., that CO2 is sequestered and sold to The Clinic Marijuana Center's grow operation in Denver, where it's used to boost plant growth.

The technology is already available for large beer operations. The challenge for Austin-based Earthly Labs was to scale it down and make it affordable for microbreweries. Berger said this was a struggle until the Colorado Department of Public Health and Environment connected him with a cannabis company to buy their extra CO2. Indoor marijuana plants need the gas to grow.

“It really was a perfect pairing, especially for Colorado. We've got a lot of breweries. We got a lot of cannabis operations,” said Kaitlin Urso, who’s with CDPHE. Urso is an environmental consultant for the state’s small businesses.

Urso says beer and cannabis companies from all over have asked her how this might work for them too. About two dozen breweries around the country have adopted the technology, and Earthly Lab’s CEO Amy George said wineries and distilleries are interested as well. Denver Beer Co is the first business to have a buyer for its extra CO2.

The Clinic is a medical and recreational cannabis company that grows its marijuana in a Denver warehouse. The company usually buys CO2 from power plants that’s shipped across the state.

“So the really good thing about this project is that Denver Beer Company is only eight miles away,” said Brian Cusworth, director of operations at the Clinic. “So the transportation footprint has been reduced dramatically as well.”

Denver Beer Co reuses some of its captured CO2 for carbonation, and they’ve noticed an improvement in the way their beer tastes. Berger said that’s just an added bonus — the reason they adopted the technology was to put a waste stream to good use.

Urso hopes this state pilot program can prove that this business partnership works.

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Brewing Beer Makes CO2. The State Wants Craft Breweries To Capture Their Greenhouse Gas, And Make Some Money From It Too - Colorado Public Radio
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Brewing Beer Makes CO2. The State Wants Craft Breweries To Capture Their Greenhouse Gas, And Make Some Money From It Too - Colorado Public Radio

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