Residential Clean Energy Tax Credit: 25D This 30% credit applies to purchase and installation costs for:  ·         Solar panels  ·         Solar water heaters  ·         Fuel cell property expenditures  ·         Small wind turbines  ·         Geothermal heat pumps  ·         Battery storage systems  The amount of the credit you can take is a percentage of the total improvement expenses in the year of installat ..read more