Robinson and Cole, a large law firm with offices across the United States, maintains and annually updated Green Tax Incentive Compendium, which collects federal and state tax incentives for renewable energy and energy efficiency. The 243-page document catalogs hundreds of federal and state incentives, organized by qualifying technology
Green Tax Incentive Compendium
Energy Efficiency, Conservation, and Fuel Switching in Buildings and Industry → Lighting, Appliances, and Other Equipment → Efficient Appliance Incentive Programs
Energy Efficiency, Conservation, and Fuel Switching in Buildings and Industry → Lighting, Appliances, and Other Equipment → State Financing and Tax Incentives for Efficiency Investments