US solar output hits record as AI data centers drive 66 GW demand surge

US solar farms generated more electricity in a single month than ever before, just as AI data center power demand is on track to nearly double to 66 GW by 2027.

American solar farms produced their highest monthly output on record in June, up 21 percent from a year earlier, while total US electricity demand is grinding to fresh all-time highs as AI infrastructure rewrites utility load forecasts across the country.

"Solar is sprinting to keep pace with a demand surge that is also pushing power bills higher for households," according to Energy Information Administration data that shows the national average residential rate rising 21 percent over five years to 18.05 cents per kWh.

Developers are on track to add a record 43.4 GW of new utility-scale solar photovoltaic capacity in 2026, a 60 percent increase over 2025 and more than 12 GW above the prior record set in 2024. Solar accounts for 51 percent of all new utility-scale generating capacity planned for the US grid this year, followed by battery storage at 28 percent and wind at 14 percent. Texas alone is forecast to absorb roughly 40 percent of the new solar additions.

The question is whether 43.4 GW of new solar, plus batteries, can close the gap on 66 GW of data center demand by 2027. If it cannot, natural gas fills the difference, and residential bills keep climbing.

Solar's Record Run Meets the AI Load Wall

In California's CAISO grid region, solar generation surpassed natural gas during the first five months of 2026, a marker that would have been unthinkable a few years ago. The EIA revised its 2026 utility-scale solar generation forecast 1.4 percent higher in its May outlook after finding more capacity online than expected.

Total US electricity consumption is projected to rise from a record 4,195 billion kWh in 2025 to 4,269 billion kWh in 2026, with new records expected again in 2027. The engine is AI infrastructure. US data center power demand is projected to climb from 31 GW in 2025 to 41 GW in 2026 and 66 GW in 2027, with total data center IT load capacity potentially doubling from about 80 GW to roughly 150 GW by 2028. The Department of Energy projects data centers could account for up to 12 percent of US electrical demand by 2028.

Batteries Become the Enabler

The 125-MW/500-MWh Tumbleweed energy storage facility in California became in June the first major US battery site capable of discharging power for eight hours, doubling the duration of most domestic installations. Grid-scale battery storage is at record growth, driven by a historic 90 percent drop in manufacturing costs and the need to prevent transmission blackouts as renewable capacity surges.

Hyperscaler power purchase agreements have become the pricing floor under new US solar projects. Renewables, mainly wind and solar, are meeting nearly half of the growth in data center electricity demand globally, with generation for data centers growing at an average 22 percent annual rate between 2024 and 2030.

First Solar's Contradiction

First Solar, the Tempe-based thin-film manufacturer with a $22.44 billion market cap, is the clearest pure-play on the trend. The company posted record first-quarter revenue of $1.04 billion, up 23.64 percent year over year, with diluted EPS of $3.22, and carries a 47.9 GW contracted backlog stretching through 2030. Yet the stock is down 21.17 percent year to date, as markets price the eventual Section 45X credit phase-out scheduled between 2030 and 2033 alongside the demand tailwind.

For investors, the tension is between a structural demand driver — AI's insatiable electricity appetite — and a policy cliff that will remove a key subsidy within four years. First Solar trades at roughly 15 times forward earnings, a discount to the broader market that reflects the uncertainty. Residential solar installers such as Sunrun and Enphase Energy also stand to benefit from rising electricity rates, though their exposure to the AI-driven utility-scale buildout is more indirect.

This article is for informational purposes only and does not constitute investment advice.