This report addresses the potential for using Limbo Lands as sites for renewable energy generating stations. Limbo Lands are considered as underused, formerly contaminated sites, and include former Superfund sites, landfills, brownfields, abandoned mine lands, former industrial sites, and certain government installations. The National Renewable Energy Laboratory (NREL) conducted this study for the U.S. Environmental Protection Agency (EPA), National Risk Management Research Laboratory, Sustainable Technology Division (NRMRL-STD). The objective of this report, which provides a geographic screening of potential sites, is to address Limbo Lands that are ready for redevelopment and their feasibility with renewable energy technologies (RETs). The report discusses reasons for considering RETs (and which ones) as a redevelopment option on Limbo Lands, describes the geographic screening process, identifies high-potential limbo land sites for RET redevelopment, includes discussion of two specific types of Limbo Lands: brownfields and abandoned mine lands, and provides conclusions and recommendations.