The Web site awkwardly called the Database for State Incentives for Renewables and Efficiency hosts two useful fact sheets for any individual or business considering a renewable energy installation.
Residential Renewable Energy Tax Credit covers these eligible renewable enrgies and technologies: Solar Water Heat, Photovoltaics, Wind, Fuel Cells, Geothermal Heat Pumps, Other Solar Electric Technologies
Business Energy Tax Credits covers these eligible renewable enrgies and technologies: Solar Water Heat, Solar Space Heat, Solar Thermal Electric, Solar Thermal Process Heat, Photovoltaics, Wind, Biomass, Geothermal Electric, Fuel Cells, Geothermal Heat Pumps, CHP/Cogeneration, Solar Hybrid Lighting, Direct Use Geothermal, Microturbines