PORTLAND (AP) — A Portland developer wants to build Maine’s largest solar power array at a former Navy radar site in Hancock County, but the project hinges on lawmakers passing a proposed law aimed in part at creating financial incentives for solar power.

The Portland Press Herald (http://bit.ly/1IJcxfD ) reported that Gouldsboro Solar LLC has signed a letter of intent with The Jackson Laboratory in Bar Harbor to sell power from a 2.8 megawatt solar installation to the biomedical research lab.

The $9 million project would feature 9,500 panels covering roughly 12 acres. It would generate enough power each year to serve 58,000 average Maine homes.

A formal announcement is scheduled for Wednesday.

For the project advance, a bill to require electricity suppliers to include new solar generation in their power portfolios must pass the Legislature.