From Solar American Cities in the U.S. Department of Energy:

The U.S. Department of Energy developed this comprehensive resource to assist local governments and stakeholders in building sustainable local solar markets. The guide introduces a range of policy and program options that have been successfully field tested in cities around the country. The guide describes each policy or program, followed by more information on:

•Benefits: Identifies benefits from implementing the policy or program.
•Implementation Tips and Options: Outlines various tips and options for designing and implementing the policy or program.
•Examples: Highlights experiences from communities that have successfully implemented the policy or program.
•Additional References and Resources: Lists additional reports, references, and tools that offer more information on the topic, where applicable.