Home solar in Idaho: prices, net metering, what is left in 2026
What Idaho homeowners pay for solar in 2026, how the state's export rules work, and which incentives survived - verified against state sources, town by town.
Installed home solar in Idaho compares against the U.S. marketplace average of about $2.58 a watt - roughly $30,960 for 12 kW.
The 30% federal solar credit ended December 31, 2025 - Idaho installations completed in 2026 get $0 from it.
A home battery in Idaho runs about $12,000-$16,000 installed, before any state storage incentive.
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.
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 installed solar costs in 2026
| 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 |
Compare solar quotes for Idaho
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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.
The 30% federal tax credit is gone for 2026 installations
The federal Residential Clean Energy Credit (30%) was repealed by the One Big Beautiful Bill Act signed July 4, 2025. Per the IRS, the credit is not available for any property placed in service after December 31, 2025 - and the IRS counts the installation completion date, not the contract date.
Common questions
Should I lease, get a PPA, or buy?
Buying keeps all savings and any incentives with you. Leases and PPAs put a company's equipment on your roof for 20-25 years, complicate a home sale, and in 2026 any tax benefits they advertise belong to the company under commercial rules - not to you. Read escalator clauses carefully.
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 my roof even suitable for solar?
Three things decide it: orientation (south-facing is best in the U.S., east-west workable), shade (trees or taller buildings across midday hours can sink the math), and roof age (if the shingles have under 10 years left, reroof first - removing and reinstalling panels later costs thousands). Any honest installer assesses all three before quoting a number.
Do I need a battery with my solar?
Not necessarily. Under full retail net metering, the grid effectively stores your surplus for free. Batteries earn their $12,000-16,000 price where export rates are low, outages are common, or time-of-use rates make evening self-consumption valuable.
How much does home solar cost in 2026?
The U.S. marketplace average is about $2.58 per watt installed - roughly $15,500 for a 6 kW system and $31,000 for 12 kW, before any state incentives. Quotes meaningfully above that level deserve a written explanation of what justifies the premium.
Compare solar quotes for Idaho
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.
Prices by city
Aberdeen · Acequia · Albion · American Falls · Ammon · Arco · Arimo · Ashton · Athol · Bancroft · Basalt · Bellevue · Blackfoot · Bliss · Bloomington · Boise City · Bonners Ferry · Bovill · Buhl · Burley · Butte City · Caldwell · Cambridge · Carey · Cascade · Castleford · Challis · Chubbuck · Clark Fork · Clayton · Clifton · Coeur d'Alene · Cottonwood · Council · Craigmont · Crouch · Culdesac · Dalton Gardens · Dayton · Deary · Declo · Dietrich · Donnelly · Dover · Downey · Driggs · Drummond · Dubois · Eagle · East Hope · Eden · Elk River · Emmett · Fairfield · Ferdinand · Fernan Lake Village · Filer · Firth · Franklin · Fruitland · Garden City · Genesee · Georgetown · Glenns Ferry · Gooding · Grace · Grand View · Grangeville · Greenleaf · Hagerman · Hailey · Hansen · Harrison · Hauser · Hayden · Hayden Lake · Hazelton · Heyburn · Hollister · Homedale · Hope · Horseshoe Bend · Huetter · Idaho City · Idaho Falls · Inkom · Iona · Irwin · Island Park · Jerome · Juliaetta · Kamiah · Kellogg · Kendrick · Ketchum · Kimberly · Kooskia · Kootenai · Kuna · Lapwai · Lava Hot Springs · Leadore · Lewiston · Lewisville · Mackay · Malad City · Malta · Marsing · McCall · McCammon · Melba · Menan · Meridian · Middleton · Midvale · Minidoka · Montpelier · Moore · Moscow · Mountain Home · Moyie Springs · Mud Lake · Mullan · Murtaugh · Nampa · New Meadows · New Plymouth · Newdale · Nezperce · Notus · Oakley · Oldtown · Onaway · Orofino · Osburn · Oxford · Paris · Parker · Parma · Paul · Payette · Peck · Pierce · Pinehurst · Placerville · Plummer · Pocatello · Ponderay · Post Falls · Potlatch · Preston · Priest River · Rathdrum · Reubens · Rexburg · Richfield · Rigby · Riggins · Ririe · Roberts · Rockland · Rupert · Salmon · Sandpoint · Shelley · Shoshone · Smelterville · Soda Springs · Spencer · Spirit Lake · St. Anthony · St. Charles · St. Maries · Stanley · Star · State Line · Stites · Sugar City · Sun Valley · Swan Valley · Tensed · Teton · Tetonia · Troy · Twin Falls · Ucon · Victor · Wallace · Wardner · Warm River · Weippe · Weiser · Wendell · Weston · White Bird · Wilder · Winchester · Worley