In May 2026, for the first time in U.S. history, the sun powered more of the nation’s electricity than coal—12.8% to 12.2%—marking a quiet but seismic shift in the American energy landscape. This milestone, recorded by energy think tank Ember using data from the U.S. Energy Information Administration, signals not just the rise of solar, but the accelerating decline of coal, once the backbone of American power. Just five years ago, coal supplied nearly 20% of the country’s electricity; today, it hovers at an all-time monthly low of 12.2%. Meanwhile, solar has more than doubled its share since May 2021, generating a record 45.5 terawatt-hours in May 2026—an 17% jump from the same month the previous year.
The shift reflects both solar’s explosive growth and coal’s irreversible retreat. Solar is now the third-largest source of electricity in the U.S., trailing only natural gas and nuclear. "Overtaking coal for the first month on record shows just how far solar has come, from a niche contributor to the third-largest and fastest-growing source of power in the US electricity system," said Nicolas Fulghum, senior data analyst at Ember. This transformation has been driven by plummeting costs, increased efficiency, and surging demand for clean, stable energy—especially as natural gas prices remain volatile.
Yet, the path forward isn’t without obstacles. A report from the Solar Energy Industries Association (SEIA) and Wood Mackenzie revealed that only 7.8 gigawatts of new solar capacity were added in the first quarter of 2026, a 27% drop from the same period last year. Factors include the expiration of a federal tax credit for residential installations, trade restrictions on solar components from Asia, and mounting delays in federal permitting. Despite these headwinds, solar and battery storage together accounted for 91% of all new electricity capacity added in the first quarter. Even more telling, 74% of new solar capacity was installed in states won by Donald Trump in the 2024 election, underscoring bipartisan grassroots momentum.
New utility-scale solar contracts actually rose 15% in the first quarter, reaching 6.3 gigawatts, suggesting that market forces remain strong. Still, Wood Mackenzie forecasts annual solar additions will plateau at around 43 gigawatts over the next five years—slower than past growth rates. As Darren Van’t Hof, interim president and CEO at SEIA, warned, "Impeding the only sector that is actively building new power is a reckless gamble that will only drive electricity bills higher."
The sun has now outshone coal, even if briefly. But to keep rising, solar will need more than just sunlight—it will need smarter policies, faster approvals, and sustained investment. The energy transition isn’t just coming. It’s already here.