Where things stand
Two things happened to renewable energy economics in 2025, and they pointed in opposite directions.
The first is that bonus depreciation came back to 100% and was made permanent. The scheduled phase-down that had taken it from 100% to 80%, then 60%, then toward zero was repealed for property acquired and placed in service after January 19, 2025. There is now no sunset.
The second is that the clean electricity credits were given an end date. For wind and solar, the technology-neutral investment and production credits terminate for facilities placed in service after December 31, 2027, unless construction began by July 4, 2026. Projects that began construction before that date generally have roughly four years to reach placed-in-service.
What the stack consists of
For a qualifying project, several benefits can apply to the same asset.
| Element | What it does | Condition |
|---|---|---|
| Base investment credit | A credit against the eligible cost of the facility | Available at a low base rate |
| Prevailing wage and apprenticeship | Multiplies the base rate by five, taking it to the headline 30% | Labor standards met and documented throughout construction and, for some credits, during a maintenance period |
| Energy community adder | An additional increment | Facility located in a qualifying community, typically tied to prior fossil fuel activity or brownfield status |
| Domestic content adder | An additional increment | Steel, iron, and manufactured product thresholds satisfied and substantiated |
| Low-income community bonus | A further increment | Competitive and capacity-limited. Allocated, not automatic |
| Bonus depreciation | 100% first-year deduction on the depreciable basis | Property acquired and placed in service after January 19, 2025 |
One mechanical detail matters when the two are combined. Claiming the investment credit reduces the depreciable basis of the property by half of the credit taken. So a project claiming a 30% credit depreciates 85% of its cost, not 100% of it. The two benefits genuinely stack, but not cleanly, and any model that applies full bonus depreciation to full basis alongside a full credit is overstating the result.
The policy underneath
The 2025 legislation did something more deliberate than simply cutting incentives. It kept the capital-allowance side, which benefits every kind of business investment, and put a clock on the technology-specific electricity credits for wind and solar.
Read as policy, that is a statement that general capital formation is worth subsidizing permanently, while subsidizing two now-mature generation technologies indefinitely is not. Whether or not one agrees, the practical consequence is unambiguous: the wind and solar credit is a closing window, and bonus depreciation is not.
The enforcement posture reinforces it. Treasury was directed to strictly enforce the begin-construction rules, which is a signal that the physical work and safe-harbor tests are going to be examined rather than accepted. In prior cycles, begin-construction was frequently treated as a documentation formality. It should not be treated that way now.
Two features of the current regime survived and are worth knowing about, because they change who can participate. Credits remain transferable for cash to unrelated parties, subject to restrictions on transfers to certain foreign entities, and direct pay remains available to some taxpayers. Transferability in particular created a real market in credits, which means a project's credits can reach a buyer who has liability to absorb them even where the project's own investors do not.
For the investor
Most individuals meet this as investors rather than as developers, and one question dominates all the others.
Can you actually use it?
This is where most individual investors discover the gap between the headline and their own return. Energy credits generated by a passive investment are generally subject to the passive activity rules, which means they offset tax on passive income rather than salary, bonus, or the income from a business you actively run. A high-earning executive with a large W-2 and no passive income can hold a credit they cannot presently use.
The same applies to the depreciation. A large first-year deduction is only worth its face if there is income of the right character for it to offset, and the at-risk rules cap the deduction at what you genuinely have at stake. Whether any of this reaches your actual liability depends on your facts, not on the project's.
If you are looking at wind or solar specifically
- 01Ask when construction began and how it is evidenced. Physical work of a significant nature, or the safe harbor, with contemporaneous documentation. If a sponsor is vague about this, that is the answer. Given the enforcement direction, this is now the first diligence question, not a late one.
- 02Confirm the placed-in-service runway. A project that began construction in time still has to be finished inside its window. Ask what happens to your economics if it slips.
- 03Do not assume the adders. Prevailing wage, domestic content, and energy community status each carry their own substantiation burden, and the low-income bonus is competitively allocated rather than automatic. A model showing every adder stacked is showing a best case, not a base case.
- 04Ask whether credits are being transferred and at what discount. If the project intends to sell its credits, the discount to face is a real cost that shows up in your economics.
More generally
- Bonus depreciation is now permanent, which removes the reason to rush. For several years the sensible advice was to accelerate purchases ahead of a declining percentage. That pressure is gone, and decisions can be made on the merits of the asset rather than against a phase-down calendar.
- Underwrite the project before the tax treatment. An energy asset that does not produce and sell power at an acceptable price is a bad investment with a tax feature attached. The credit improves a sound project. It does not rescue an unsound one, and it locks you in while you find out which you have.
- Have your own CPA confirm usability for your circumstances before committing. Not the sponsor's. Not ours. This is the step that determines what you actually receive, and it is the one most often skipped.
The honest summary is that this remains one of the more powerful combinations available, and that the window on part of it is closing on a published schedule while the other part is now permanent. Those two facts should push attention toward the durable half and toward rigorous diligence on the half with a deadline.
General information only. This article describes law and practice as we understand them at the time of writing. It is not tax, legal, accounting, or investment advice, it does not consider your circumstances, and it does not create an advisor-client or attorney-client relationship. Odyssey Strategic Advisors LLC is not a law firm and is not a CPA firm. Confirm any position with your own tax professional before acting on it. See our disclosures.