Solar Power Surpasses Coal and Wind for First Time, Signaling Industry Shift

Solar power generated more electricity than either coal or wind across the United States in May for the first time in a single month. Data from the U.S. Energy Information Administration (EIA) shows solar produced 47,147 gigawatt-hours, ahead of coal's 45,119 gigawatt-hours.

Over the first five months of 2026, utility-scale solar output rose 21.6 percent from the previous year, while coal generation dropped 10.9 percent. The EIA projects that solar, wind, and battery storage will add approximately 83 gigawatts of new capacity by May 2027. Fossil fuel and nuclear capacity are expected to decline by nearly 4.7 gigawatts during the same period.

The rise of solar is not an isolated event but a result of a cost curve that has been declining for over a decade, a phenomenon known as Swanson's Law. This observation suggests that the production cost of technologies like solar panels falls by about 20 percent each time the installed capacity doubles.

Utility-scale solar costs have significantly decreased, from around $359 per megawatt-hour in 2009 to near $69 in 2026. This cost reduction has prompted major technology companies like Google and Meta to sign long-term contracts for solar power to meet the energy demands of their data centers.

Furthermore, the rapid advancement of artificial intelligence is driving electricity demand at an unprecedented rate. Wood Mackenzie forecasts that U.S. solar generation will grow by 65 percent between 2026 and 2030. The combination of a falling cost curve and a rising demand curve is accelerating adoption. Companies that identify and act on these trends early are positioned to benefit from the ongoing energy transition.