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“Going green” at home — whether it’s your principal residence or a second home — can reduce your tax bill in addition to your energy bill, all while helping the environment, too. The catch is that, to reap all three benefits, you need to buy and install certain types of renewable energy equipment in the home.

Invest in green and save green

For 2018 and 2019, you may be eligible for a tax credit of 30% of expenditures (including costs for site preparation, assembly, installation, piping, and wiring) for installing the following types of renewable energy equipment:

• Qualified solar electricity generating equipment and solar water heating equipment,
• Qualified wind energy equipment,
• Qualified geothermal heat pump equipment, and
• Qualified fuel cell electricity generating equipment (limited to $500 for each half kilowatt of fuel cell capacity).

Because these items can be expensive, the credits can be substantial. To qualify, the equipment must be installed at your U.S. residence, including a vacation home — except for fuel cell equipment, which must be installed at your principal residence. You can’t claim credits for equipment installed at a property that’s used exclusively as a rental.

To qualify for the credit for solar water heating equipment, at least […]