Cleanfields Investment Act - Amends the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 to direct the Administrator of the Environmental Protection Agency (EPA) to establish a program to provide grants for: (1) inventorying, characterizing, assessing, and conducting planning relating to brownfield sites for the purpose of locating renewable electricity generation facilities or renewable energy manufacturing facilities on such sites; and (2) remediating brownfield sites for the purpose of locating such facilities on such sites. Authorizes such grants to be made to: (1) eligible entities to be used for capitalization of revolving loan funds to provide such assistance; or (2) eligible entities or nonprofits to be used directly for such activities.
Requires the Administrator to issue: (1) guidance describing the considerations to be used in determining whether a grant is warranted; and (2) ranking criteria to be used in determining whether a grant is warranted.
Defines a "renewable electricity generation facility" to mean a facility that generates renewable electricity from wind energy, solar energy, or geothermal energy. Defines a "renewable energy manufacturing facility" to mean a facility that manufactures components or systems for use in generating renewable electricity from such energy.
Authorizes of appropriations for such grants for FY2011-FY2016.