A total of 59 gigawatts of U.S. clean energy projects are facing delays at a time when demand for power from AI data centers is surging, according to a trade group study.
Developers are seeing an average delay of 19 months over issues such as long interconnection times, supply constraints and regulatory barriers, the American Clean Power Assn. said in a quarterly market report.
The backlog is happening despite the growing need for power on grids that are being taxed by energy-hungry data centers and increased manufacturing. The Trump administration has implemented a slew of policies to slow the build-out of solar and wind projects, including delaying approvals on federal lands.
The potential energy generation facing delays is the equivalent of 59 traditional nuclear reactors, enough to power more than 44 million homes simultaneously.
“Current policy instability is beginning to impact investor confidence and negatively impact project timelines at a time when demand is surging,” American Clean Power Chief Policy Officer JC Sandberg said in a statement.
Despite the hurdles, developers were able to bring more than 50 gigawatts of wind, solar and batteries online in 2025, accounting for more than 90% of all new power capacity in the U.S., the report found. Clean power purchase agreements declined 36% in 2025 compared with 2024, signaling that the build-out of clean power in the U.S. could be lower in the 2028 to 2030 time period, according to the report.
Chediak writes for Bloomberg.
