The International Energy Agency says limiting global warming to 1.5 degrees Celsius above preindustrial levels will require worldwide annual energy efficiency improvements to double, from 2% in 2022 to more than 4% annually between now and 2030. In the United States, three policies could generate more than a third of the needed energy savings, say experts at the American Council for an Energy-Efficient Economy.
“Across every sector of the economy … we need to make progress to reach that doubling goal,” Mark Kresowik, ACEEE senior policy director, said in a Thursday webinar.
ACEEE concluded in a 2019 study that energy efficiency can cut U.S. greenhouse gas emissions and energy use by about 50% by 2050, relative to 2005 levels and 2050 projected energy use, “getting us halfway to our national climate goals.” And the United States did post a 4% reduction in energy intensity last year, though Kresowik said it was mostly due to milder weather.
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