
Paying, tax, and contracts
Buying, leasing, PPAs, loans and PACE, contracts, cancelling, and section 25D.
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The federal tax credit
Under federal law as amended on July 4, 2025, the residential clean energy credit (Internal Revenue Code section 25D) does not apply to expenditures made after December 31, 2025. The IRS says an expenditure is treated as made when the original installation is completed. See IRS.gov for details, and ask a tax professional about your situation.
Guides

Buying, leasing, or a PPA: how they differ
Own it, lease it, or buy power.

Solar loans and PACE financing: questions to ask
Questions the FTC lists.

Reading a solar contract before you sign
What the contract should say.

Cancelling a solar sale: the FTC Cooling-Off Rule
The rule, in its own words.

The federal solar tax credit: what the law says now
Not for expenditures made after 2025.
Start with buy, lease, or PPA
Own it, lease it, or buy power.