A bill to require state-run buildings to conserve electricity and water has been lodged in a Senate committee for over a year.
Democrats leading the push say their plan has no real downside, while critics say it gives the industry a pass.
Solar backers are hoping lawmakers will offer more flexibility on how soon Future Energy Jobs Act funds need to be spent.
Minnesota lawmakers failed to pass a major energy efficiency bill in the final hours of session despite bipartisan support.
The Energy Conservation and Optimization Act has support from utilities, businesses, unions and environmental groups.