This guide offers a pathway to better integration of solar energy systems onto historic resources. The sections within this document provide an explanation of solar energy technology, descriptions of the current regulatory context governing the use of solar panels on historic properties at the state and local level, and propose regulatory solutions that take into consideration the value of both historic and energy resources. The guide also sets forth suggested design review principles that are intended to encourage solar siting solutions that protect historic features, materials and spatial relationship. Sources for additional information are located at the end of this publication.