With the passage of HB 3516 in June 2011, solar permit application approval is a "ministerial function", provided a system meets certain guidelines. To qualify for this simplified permitting process, a solar system must not expand the footprint or peak height of the residential or commercial structure that the system is installed upon. The system must also be aligned so that it is parallel to the slope of the roof.
This legislation also addressed permitting fees for solar systems. Counties may not charge permit fees for solar permit applications specifically, but they can charge building permit fees for the project. Systems installed in historic districts, scenic areas, on conservation landmarks, or in other specified areas may require a more extensive permitting review.