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Climate-Friendly Cement? California Takes On A High-Carbon Industry

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Under pressure from state lawmakers, the state's cement industry is gradually taking steps to reduce its carbon footprint. But experts say the industry is one of the most difficult to decarbonize.

because of improved energy efficiency and increased use of lower-carbon fuels.

The cement industry needs a variety of technologies to cut carbon, he said, some so costly that the industry is seeking state funding and incentives. About 60% of the cement industry’s total carbon dioxide emissions in California are from heating limestone in the kiln; the other 40% is from fuel combustion and electricity use, according to the Global Efficiency Intelligence report.Most of the fuels used in the cement manufacturing process, such as natural gas, coal and petroleum coke, emit planet-warming gases.

effective July 1, is working to replace at least half its fossil fuels with climate-friendly alternatives within the next 10 years. The practice is controversial due to its practicality and cost, but also because environmentalists say using carbon capture and storage for enhanced oil recovery will only prolong the lifespan of the fossil fuel industry. Many environmental justice groups, however, are not as opposed to the cement industry using carbon capture because of how difficult it is to decarbonize.

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