Xcel Energy plans to build another major solar array in Becker, creating one of the largest solar power complexes in the country.
Xcel said Monday it will ask Minnesota utility regulators to add a 250-megawatt solar array to the 460-megawatt Sherco Solar project in Becker that is already approved. The plan is to complete the entire complex by the end of 2025.
"We are committed to moving the Sherco Solar project forward to deliver significant new clean energy to our customers and communities," said Chris Clark, Xcel's president for Minnesota, in a statement. "These projects will be the lowest-cost solar on our Upper Midwest system and demonstrate our focus on clean energy without compromising affordability."
Still, Xcel acknowledged in a regulatory filing late Friday that costs for new solar farms — and clean energy projects generally — have been soaring. In a recent bid for solar proposals, Xcel found only two projects that were cost-effective for its customers.
One is the Sherco addition, the other a 100-megawatt solar project in Polk County, Wis., being developed by National Grid Renewables. Xcel would buy power from National Grid under a long-term agreement. Xcel would own and build the two Sherco projects.
The Sherco addition and the Wisconsin project total 350 megawatts, well short of the 900 megawatts of solar that Xcel was seeking in a request for proposals made in October.
In some cases, "bids were significantly above the price level we view as prudent," Xcel said in the regulatory filing. The disappointing outcome of the bid is "emblematic of the broader marketplace."
The 710 megawatts of total solar power capacity at Sherco — with the proposed expansion — would help replace electricity lost from the retirement later this year of a 680-megawatt coal-fired generator in Becker.