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LOS ANGELES, CALIFORNIA – APRIL 21: Workers install solar panels during the completion phase of a … More 4-acre solar rooftop atop AltaSea’s research and development facility at the Port of Los Angeles, in the San Pedro neighborhood, on April 21, 2023 in Los Angeles, California. The installation will supply enough energy to power AltaSea’s 35-acre campus, the country’s biggest ‘blue economy’ tech hub, which is focused on clean oceans, climate resiliency, and clean energy. (Photo by Mario Tama/Getty Images) Getty Images For the first time in history, fossil fuels supplied less than half of the United States’ electricity generation for an entire month, according to new data released by energy think tank Ember. This milestone, achieved in March 2025, represents a turning point in the evolving energy mix of the world’s largest economy. Historically, fossil fuels—primarily coal and natural gas—have dominated U.S. electricity production. But the steady rise of renewables over the past two decades has chipped away at their dominance. In March, wind, solar, hydro, and nuclear collectively overtook coal, oil, and gas, with fossil fuels accounting for just 48.9% of total generation. However, note that this is an estimate of total generation, including small scale systems that are not connected to the grid. According to EIA data, fossil fuels still account for about 64% of electricity generation by utilities. What’s Driving the Shift? Several factors converged to make this moment possible. First, renewable energy capacity has expanded rapidly. Wind and solar are now mainstream technologies, supported by state mandates, federal tax incentives, and falling costs. Wind generation alone grew 12% in March year-over-year, and solar jumped by a remarkable 37%. Second, seasonal demand patterns played a role. March is typically a shoulder month for electricity demand—warmer than winter but not yet summer hot—which tends to reduce the…

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Filed under: News - @ April 30, 2025 12:28 am