Growing cannabis indoors produces a lot of greenhouse gases — just how much depends on where it’s grown

Growth op

The Research Brief is a short take about interesting academic work. The big idea Indoor cannabis production is a major source of greenhouse gas emissions, and the environmental effects vary significantly depending on  where it is being grown , according to  our new study . The lights used to  grow weed indoors use a lot of electricity , but facilities require a lot of energy to maintain a comfortable environment for the plants. That means air conditioners or heaters to maintain proper temperatures. Producers also pump carbon dioxide inside to increase plant growth. This accounts for  11% to 25% of facilities’ greenhouse gas emissions . But the biggest energy use comes from the need to constantly bring fresh air into growing facilities. All of this outside air needs to be treated so that it is the correct temperature and humidity. This is a very energy-intensive process since the air exchange rate is typically so high. Builders are swapping cement for weed to reduce pollution Source of mysterious lights across Detroit River turned out to be weed farms near Windsor, Ont. How Sabina Pillai is championing the psychedelic drug revolution in Canada All of these inputs contribute to greenhouse gas emissions, a lot more in some regions than others. Using Department of Energy, Environmental Protection Agency and industry data, we found that growing pot indoors leads to higher greenhouse gas emissions in the  Mountain West, Midwest, Alaska and Hawaii  than compared to the Pacific and Atlantic coasts. This is because climates are milder on the coasts, so you need less heating or air conditioning and because  the electric grids use more clean energy Cannabis grown in Southern California has the lowest emissions, at 143 pounds of carbon dioxide equivalent per ounce of dried cannabis. Meanwhile, eastern O’ahu in Hawaii has the highest emissions,…

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Source : Growing cannabis indoors produces a lot of greenhouse gases — just how much depends on where it’s grown

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