What Idaho still offers after the federal credit ended
Every incentive on this page is verified against Idaho government sources - and the expired ones salespeople still quote are called out.
The 30% federal solar tax credit ended for installations finished after December 31, 2025 - New Plymouth systems completed in 2026 get $0 from it.
Under Idaho's export rules, compensation for surplus power decides the payback - which typically runs 10-14 years on unsubsidized 2026 math.
Installed home solar for New Plymouth homeowners averages about $2.58 a watt across the U.S. marketplace - roughly $30,960 for a 12 kW system before incentives.
If a salesperson in New Plymouth tells you a 30% federal tax credit applies to your 2026 installation, they are quoting a dead law. What may still exist: Idaho's own incentives and tax treatment, listed below, and lease/PPA arrangements where a company claims commercial credits - in which case the credit belongs to them, not you.
Leased and PPA systems deserve extra scrutiny in 2026: the sales pitch often bundles 'tax savings' that now accrue to the leasing company under separate commercial rules - not to you. Get every claimed saving in writing, attributed to a specific law, before signing a 20-25 year contract.
The 2026 numbers
| System size | Installed price (marketplace avg) | Notes |
|---|---|---|
| 6 kW | $15,480 | Small roof / low usage |
| 8 kW | $20,640 | Typical starter system |
| 10 kW | $25,800 | Family home with AC |
| 12 kW | $30,960 | Large home / EV charging |
| Home battery (optional) | $12,000-$16,000 | Backup power + self-consumption |
Get solar quotes for New Plymouth
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Idaho rules that decide your payback
| Rule | Idaho status |
|---|---|
| Export compensation (net metering) | Idaho has no statewide retail net-metering guarantee — terms are set utility by utility, and Idaho Power, the state's largest utility, now uses real-time net billing that credits exported energy at an avoided-cost-based Export Credit Rate in dollars rather than one-for-one retail kWh, per Idaho PUC Order No. 36048. |
| State incentive | Residential Alternative Energy Device Deduction (Idaho Code 63-3022C) — an income tax DEDUCTION of 40% of system cost in the year the system is placed in service and 20% per year for the next three years, capped at $5,000 in any single year |
| Sales tax on the system | Not exempt - taxed like any purchase |
| Property tax on added home value | No exclusion on record |
Idaho's incentive is a deduction, not a credit — it only reduces the income you are taxed on, so it is worth a fraction of a same-sized tax credit; and because there is no statewide net-metering law, what you are paid for exported power depends entirely on which utility serves your address.
This guide is research, not advice: an independent summary of published prices and state rules. It is not an installer, lender or tax advisor - verify incentive eligibility with a licensed tax professional before relying on it.
What this means for New Plymouth roofs
Beware of any 2026 payback estimate that looks as good as the 2025 ones: with the federal credit gone, a third of the old subsidy math vanished. If a sales projection has not gotten noticeably worse since 2025, it is hiding something - usually an inflated utility-rate escalation assumption.
This guide is research, not advice: an independent summary of published prices and state rules. It is not an installer, lender or tax advisor - verify incentive eligibility with a licensed tax professional before relying on it.
Getting New Plymouth quotes
Same-day contracts are a red flag in this industry. Legitimate ID installers expect you to compare bids, check licenses, and read the interconnection terms. Anyone pressuring you to sign at the kitchen table is pricing in your haste.
This guide is research, not advice: an independent summary of published prices and state rules. It is not an installer, lender or tax advisor - verify incentive eligibility with a licensed tax professional before relying on it.
Common questions
How do I check if a solar quote is fair?
Divide the total price by the system's wattage. The U.S. marketplace average is about $2.58 per watt installed; $2.30-3.00 covers most fair quotes depending on roof complexity. Above that, ask exactly what you are paying extra for - in writing.
What happens if my installer goes out of business?
Panel and inverter warranties come from the manufacturers and survive, but the workmanship warranty usually dies with the company. That is a real risk in the post-credit shakeout - prefer installers with years of local history, and get manufacturer-backed workmanship coverage where offered.
Does solar raise my property taxes?
It depends on the state - many exempt solar's added home value from property tax, others do not, and some exemptions have expiration dates. This guide's state page lists the verified rule and source for your state.
Is solar still worth it without the federal credit?
It depends mostly on your state's export rules and your daytime usage. Paybacks lengthened by roughly a third when the credit ended, but rising electricity rates and record-cheap hardware keep the math workable in states with decent export compensation - and marginal where exports pay avoided cost only.
Is there still a federal solar tax credit in 2026?
No. The 30% Residential Clean Energy Credit was repealed effective for systems placed in service after December 31, 2025, per the IRS. Only systems finished by the end of 2025 qualified. State-level incentives are separate and some survive - check the state page in this guide.
Get solar quotes for New Plymouth
These platforms collect bids from licensed installers so you can compare against the same spec. Prices come from installers, not from this site.
Disclosure: this is an independent guide. If you request quotes through a link here, the platform may pay this site a referral fee. That fee never changes your quotes.