The “fuel” that’s helping America fight climate change isn’t natural gas

Power for the People VA

You’ve heard the good news on climate: after a century or more of continuous rise, U.S. CO2 emissions have finally begun to decline, due largely to changes in the energy sector. According to the Energy Information Agency (EIA), energy-related CO2 emissions in 2015 were 12% below their 2005 levels. The EIA says this is “because of the decreased use of coal and the increased use of natural gas for electricity generation.”

Is the EIA right in making natural gas the hero of the CO2 story? Hardly. Sure, coal-to-gas switching is real. But take a look at this graph showing the contributors to declining carbon emissions. Natural gas displacement of coal accounts for only about a third of the decrease in CO2 emissions.

Courtesy of the Sierra Club Beyond Coal Campaign, using data from the Energy Information Agency. Courtesy of the Sierra Club Beyond Coal Campaign, using data from the Energy Information Agency.

By far the biggest driver of the declining emissions is energy efficiency. Americans…

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