The biggest solar power project in Minnesota won approval Thursday from state regulators.
The $250 million Aurora Solar Project by Edina-based Geronimo Energy calls for the installation of ground-mounted solar panels at 21 mostly rural sites from Chisago County north of the Twin Cities to Waseca in southeast Minnesota. Geronimo plans to finish the project in 2016 and sell the power to Xcel Energy.
"This signals that something big is happening in solar energy in Minnesota," said Michael Noble, executive director of Fresh Energy, a St. Paul nonprofit that advocates greater reliance on renewable energy.
It is by far the largest solar project approved in Minnesota, and in one sweep increases the state's solar output sevenfold. The combined 100 million watts is the equivalent of a small traditional power plant. The largest of the 21 solar sites, near Paynesville, will cover an area the size of Lake of the Isles in Minneapolis.
The state Public Utilities Commission (PUC) voted 3-0 to approve a permit for project, but rejected three of the original 24 sites, in Pipestone, Wyoming and Zumbrota, because of local land-use objections. Another site, near Hastings, is in jeopardy because of recently discovered soil conditions.
Geronimo Energy said the project will go ahead without them.
"We had offered more sites than we would use because of the need for flexibility if a site ended up not being constructible," said Betsy Engelking, vice president for policy and strategy at Geronimo.
In a major victory last year, the project successfully competed in a PUC bidding process against natural gas projects. It aims to be a cost-effective means to supply Xcel Energy extra power on high-demand summer days. Geronimo plans to achieve this by installing solar panels that track the sun from east to west, capturing solar power late in the day when electricity demand rises.