It now applies to a wide range of generation technologies, including but not limited to solar thermal electric, photovoltaics, wind, and geothermal electric (DSIRE). For solar systems, the credit is "equal to 30% of expenditures, with no maximum credit. Eligible solar energy property includes equipment that uses solar energy to generate electricity…" (DSIRE). For small wind turbines, the credit is "equal to 30% of expenditures, with no maximum credit" (DSIRE). Significantly, this also applies to investments supported by "subsidized energy financing" (DSIRE).

Alternatively, taxpayers could have chosen simply apply for and receive Renewable Energy Grants (REGs) under the 1603 program. These apply to a wide range of generation technologies, including but not limited to solar thermal electric, photovoltaics, wind, and geothermal electric (DSIRE). The grant is equal to "30% of property that is part of a qualified facility, qualified fuel cell property, solar property, or qualified small wind property; and...
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