ID incentive guide
Idaho solar incentives in 2026
Last updated · every ID program below is verifiable against the sources at the foot of this page.
The most valuable solar incentive in Idaho right now is State income tax deduction (40% year one). Overall, the state's incentive stack rates as moderate compared with the rest of the country.
The federal credit is gone — start here
The 30% federal residential clean energy credit (Section 25D) ended for systems installed after December 31, 2025. If you are buying a system in Idaho this year, there is no federal credit. That is a roughly $7,680 swing on an $25,600 system compared with 2025 pricing, and it is why state programs matter more now than they did a year ago.
What Idaho offers at a glance
| Incentive | Available? | Details |
|---|---|---|
| State income tax credit | Yes | Deduction, not a credit: 40% of cost in year one plus 20% for three more years, subject to annual caps |
| Rebate or performance payment | No | — |
| SREC market | No | — |
| Sales tax exemption | No | — |
| Property tax exemption | No | — |
| Federal tax credit | No | Section 25D ended for systems installed after December 31, 2025. |
Reviewed September 2026. Incentive programs change frequently and several are funding-capped — verify current status with the administering agency or DSIRE before relying on any figure.
Idaho solar tax credit
Idaho offers a residential solar income tax credit: Deduction, not a credit: 40% of cost in year one plus 20% for three more years, subject to annual caps. A credit only helps to the extent you owe ID income tax, so check your liability and any carry-forward rules before treating it as a discount.
Idaho solar rebates and grants
Idaho runs no statewide solar rebate or grant program in 2026. Individual utilities and municipalities sometimes do, and those are rarely advertised well — ask your utility directly what they pay toward a residential install.
Idaho offers a state income tax deduction (not a credit) of 40% of system cost in year one plus 20% for three more years, subject to annual caps.
Net metering and export rates in Idaho
Idaho has no statewide mandate. Idaho Power has shifted new customers to net billing with exports credited below retail and measured on shorter intervals; other utilities vary.
Compare this with net metering in every other state.
Export rules deserve to be read as an incentive. In a retail net metering state, every exported kilowatt-hour is worth the full retail rate; under net billing or avoided-cost compensation, the same kilowatt-hour can be worth a third of that. For a Idaho home at an assumed $0.11/kWh, that difference compounds across a 25-year system life.
What this means for your numbers
A typical 8 kW system in Idaho costs roughly $19,600–$25,600 installed before incentives, producing about 11,040 kWh a year and saving around $1,001 in year one — a simple payback near 20–26 years with no incentives applied. Anything in the table above shortens that.
Frequently asked questions
What are Idaho solar tax credits worth in 2026?
Idaho offers no residential solar income tax credit in 2026, and the 30% federal credit ended for systems installed after December 31, 2025. There is no state tax benefit to claim at all, so the economics rest on your electricity rate and export credit.
Does Idaho have solar rebates?
No. Idaho has no statewide solar rebate or upfront grant program in 2026. Individual utilities and municipalities occasionally run their own, so it is worth asking your utility directly.
Is there an Idaho solar property tax exemption?
No. Idaho does not exempt residential solar from property tax assessment, so a system that increases assessed value can increase your property tax. Assessment practice varies by county — ask your local assessor how they treat rooftop solar.
What solar incentives are available in Idaho in 2026?
Idaho offers a state income tax deduction (not a credit) of 40% of system cost in year one plus 20% for three more years, subject to annual caps. Because the federal Section 25D credit ended for systems installed after December 31, 2025, these state, local and utility programs are now the entire incentive picture for a purchased system.
Is there still a 30% federal solar tax credit in Idaho?
No. The 30% federal residential clean energy credit (Section 25D) ended for systems installed after December 31, 2025 under the One Big Beautiful Bill Act. Any quote or website still applying 30% to a 2026 purchased installation is out of date. Leased and PPA systems can still benefit indirectly, because the third party that owns the system may claim the commercial 48E credit through 2027 and pass some of the value through in pricing.
Does Idaho have net metering?
Idaho has no statewide mandate. Idaho Power has shifted new customers to net billing with exports credited below retail and measured on shorter intervals; other utilities vary. Export rules are effectively an incentive — often the largest one — because they set what every kilowatt-hour you do not use on site is worth.
How much do incentives change the cost of solar in Idaho?
Before incentives, a typical 8 kW system in Idaho runs roughly $19,600–$25,600. A state credit of deduction, not a credit: 40% of cost in year one plus 20% for three more years, subject to annual caps comes off that, subject to the cap and your tax liability. See our full Idaho cost breakdown for payback math.
Verify before you rely on any of this
Incentive programs open, close, deplete their funding and change their caps — often mid-year. This page is a starting point reviewed September 2026, not tax advice. Confirm with: