The title of this report speaks for itself. Check out Appendix A for dozens if not hundreds of case studies of clean energy initiatives categorized by state.

https://www.epa.gov/sites/production/files/2015-08/documents/epa_assessing_benefits.pdf

This report is downloadable. Excerpt from the Report:

This Resource identifies the multiple benefits of clean energy and explains why they should be quantified and considered along with costs. It starts by presenting clear, easy-to-understand background information on each type of benefit to help non-specialists understand how the benefits are generated and what can be done to maximize them. Building on that foundation, the Resource describes analytic options that states can explore as they conduct and review analyses of clean energy initiatives. It provides a framework for assessing multiple benefits, presenting detailed information on basic and more sophisticated approaches along with descriptions of tools for quantifying each type of benefit. It also includes many examples of how states have used multiple benefits approaches, along with additional resources for more information.