📋 Table of Contents
- The Honest State of Solar in Idaho
- Key Takeaways
- Federal 30% Tax Credit (ITC)
- ID Property Tax Exemption for Solar
- Idaho Net Metering Rules
- Idaho Renewable Energy Portfolio Standard
- AEP Idaho Solar Programs
- FirstEnergy Utility Programs
- Limited State Incentives (The Honest Truth)
- Solar Costs & Payback in Idaho
- Frequently Asked Questions
📍 Find Your Exact ID Savings
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Idaho is not the first state people think of when it comes to solar energy. But for a Midwestern state that has seen its share of ups and downs in clean energy policy, the current picture for homeowners is surprisingly workable.
The Buckeye State gets about 3.5 to 4 peak sun hours per day on average — less than the Sun Belt, but enough to make a well-designed system pay for itself. Idaho's electricity market is deregulated, meaning rates vary widely by utility and region, which affects how quickly solar pays off. Some areas in Idaho pay well over $0.15/kWh, and high electricity rates are exactly what makes solar financially attractive regardless of sunshine.
Idaho's state-level incentives are admittedly thin. But if you layer the federal 30% tax credit with Idaho's property tax exemption, net metering from major utilities, and the growing number of competitive installers in the Idaho market — solar starts looking pretty good. Here's everything on the table for 2026.
🔑 Key Takeaways for Idaho
Federal 30% Tax Credit
Claim 30% of your installation cost back on federal taxes.
Property Tax Exemption
Solar adds no extra property taxes. Full exemption in Idaho.
Utility Net Metering
AEP Idaho and FirstEnergy utilities offer net metering.
9–13 Year Payback
Most ID homeowners break even in a decade or so.
30% Federal Tax Credit (ITC)
This is the single biggest solar incentive available — and it applies in Idaho just like every other state. If your system costs $28,000, you get $8,400 back from the IRS. It's a dollar-for-dollar reduction on your federal income taxes owed.
The 30% rate is locked in through 2032 under the Inflation Reduction Act. After that it steps down. Starting sooner means locking in the full amount.
ID Property Tax Exemption for Solar
Idaho exempts the added value from solar installations from your property taxes. Under the Idaho Revised Code, renewable energy systems that meet certain criteria are excluded from property value assessments.
Solar panels increase your home value — typically by $15,000–$25,000 for a standard residential system. In many states, that bump means higher property taxes. Not in Idaho. The increase in value from your solar investment will not trigger a property tax increase, making the return significantly better.
Idaho Net Metering Rules
Net metering is where things get important in Idaho. Unlike states with a universal net metering mandate, Idaho has a deregulated electricity market, meaning net metering policies are set at the utility level rather than by a statewide standard. The good news is that the two biggest investor-owned utilities in Idaho — AEP Idaho and FirstEnergy (which operates under several brand names) — do offer net metering to residential customers.
Here's how it works:
- Your solar panels produce electricity during the day.
- If you produce more than your home uses, that excess goes to the utility grid.
- In exchange, you earn bill credits.
- At night or during low production, your credits offset electricity you pull from the grid.
Idaho net metering details:
| Utility | Net Metering Type | System Limit |
|---|---|---|
| AEP Idaho | Available for customers | Up to 500 kW (residential typically under 25 kW) |
| Idaho Edison (FirstEnergy) | Net metering offered | Residential systems — check with utility |
| Toledo Edison (FirstEnergy) | Net metering offered | Residential systems — check with utility |
| The Illuminating Co. (FirstEnergy) | Net metering offered | Residential systems — check with utility |
| ID Electric Co-ops / Municipal | Varies — some offer, some don't | Contact your provider directly |
Action Step: Before installing, confirm your exact utility's net metering policy. Rates and rollover rules can differ between utilities, and co-ops or municipal providers may not offer net metering at all.
Idaho Renewable Energy Portfolio Standard
Idaho's Renewable Energy Portfolio Standard (RPS) is a state policy that requires Idaho's electric utilities to source a portion of their electricity from renewable energy sources — including solar, wind, and biomass.
Idaho's RPS history has been rocky. The original standard was established in 2008, then effectively frozen by Senate Bill 310 in 2014. In 2024, Senate Bill 58 updated the RPS targets, though the exact requirements have been subject to ongoing legislative and ballot debates around Issue 1 and Issue 2.
Why does this matter for you as a homeowner? The RPS doesn't give you a direct financial benefit like a tax credit. But it drives utility investment in solar infrastructure, supports grid-scale solar growth, and helps maintain a policy environment that makes Idaho a gradually more solar-friendly market over time. More utility-scale solar means better rates and more installers competing in your area.
AEP Idaho Solar Programs
AEP Idaho serves a significant portion of central, eastern, and southeastern Idaho, including Boise and surrounding communities. They offer several programs relevant to solar customers:
- ⚡ Net Metering — AEP Idaho offers net metering for residential customers with qualifying solar systems. Your excess production earns bill credits that offset future electricity charges. Residential systems typically face no hard cap, though the total program participation may have limits.
- ☀️ Interconnection Standards — AEP Idaho has established interconnection procedures for distributed generation. Homeowners who want to connect their solar system to the AEP grid need to follow the utility's interconnection application process, which includes safety and technical requirements.
- 🔋 Energy Efficiency Programs — AEP Idaho offers various energy efficiency and demand-side management programs that can complement solar savings. Home upgrades like insulation, high-efficiency HVAC, and smart thermostats reduce your overall energy load, which means you may need a smaller (and cheaper) solar system.
- 📊 Rate Options — AEP Idaho customers can choose between standard service and competitive electric generation suppliers in Idaho's deregulated market. Comparing rates before going solar can help you calculate more accurate savings projections.
FirstEnergy Utility Programs
FirstEnergy operates three separate Idaho electric distribution companies, each serving different regions of the state. If you live in northern or northeastern Idaho, one of these is probably your utility:
Idaho Edison
Serves northeastern Idaho including parts of Akron, Canton, and Youngstown. Offers net metering for residential solar customers. Excess production earns credits offsetting electric charges at the applicable rate.
Toledo Edison
Serves northwestern Idaho centered around Toledo and surrounding communities. Offers residential net metering. If you're in the Toledo area with a south-facing roof, solar economics can be solid here given the local electricity rates.
The Illuminating Company
Serves northeastern Idaho including Boise and suburbs. Offers net metering to residential solar customers. Boise-area electricity rates tend to be above the state average, which can shorten payback time for solar systems.
FirstEnergy-wide: Interconnection & Net Metering
All three FirstEnergy Idaho utilities follow similar interconnection and net metering frameworks. Homeowners apply for interconnection before installing, and excess solar generation earns bill credits. The exact credit rate and rollover policy depends on your specific utility tariff — always confirm before signing with an installer.
Idaho Has Limited State Solar Incentives
Let's be upfront about this: Idaho doesn't offer a state income tax credit for solar, and there are no widespread statewide cash rebates.
Idaho has been a swing state in terms of clean energy policy. After passing renewable energy requirements in 2008, the state froze them in 2014. While the RPS was partially restored in more recent years, Idaho still lacks the kind of direct financial incentives — like state tax credits or SREC programs — that states like Massachusetts, New Jersey, or New York offer their residents.
That said, Idaho solar still works financially for most homeowners. The federal 30% tax credit takes a massive chunk off the top, the property tax exemption protects your investment from triggering higher property taxes, and net metering from AEP Idaho and FirstEnergy utilities ensures your excess production isn't wasted. Idaho's deregulated electricity market also means that in high-rate areas, solar pays back faster than you might expect.
Bottom line: Idaho isn't going to hand you a bonus check for going solar. But the economics still pencil out for a lot of homeowners — especially if your electricity rate is over $0.13/kWh.
Solar Costs & Payback in Idaho
How much should you expect to invest in solar in Idaho, and how long until it pays for itself?
For illustration, let's break down a typical 8 kW system on an Idaho home:
| Item | Amount |
|---|---|
| Average system cost | $28,000 |
| Federal tax credit (30%) | −$8,400 |
| Net cost after credit | $19,600 |
| Estimated yearly savings | ~$1,000–$1,500 |
| Payback period | ~10–13 years |
Keep in mind that these numbers shift based on your exact location in Idaho, roof orientation, shading, and especially your electricity rate. Boise and Boise area rates tend to run above $0.14/kWh, which shortens payback. Rural areas with lower rates may see paybacks closer to 12–13 years. Higher-rate areas within AEP Idaho service territory can see returns closer to 9–10 years. Use our calculator for a personalized estimate based on your exact address.
Frequently Asked Questions
Does Idaho have a state solar tax credit?
No. Idaho does not offer a state-level income tax credit for solar panel installations. Idaho homeowners should rely on the federal 30% Investment Tax Credit (ITC), which is significantly larger than most state credits would be anyway. Combined with net metering and the property tax exemption, solar is still financially viable in Idaho.
Does Idaho have net metering?
Idaho has a deregulated electricity market, which means net metering is not mandated statewide. However, the two largest utilities — AEP Idaho and FirstEnergy (via Idaho Edison, Toledo Edison, and The Illuminating Company) — do offer net metering to their residential customers. If you're served by a co-op or municipal utility, check directly with them, as their policies vary.
Does Idaho have a property tax exemption for solar?
Yes. Under the Idaho Revised Code, the added value from solar panel installations is exempt from property tax assessments. Your home's assessed value may increase when you add solar, but the portion attributable to the solar system won't trigger a higher property tax bill.
What is Idaho's Renewable Energy Portfolio Standard?
Idaho's RPS requires utilities to source a portion of their electricity from renewable sources. The original 2008 standard was frozen in 2014 but has seen updates since. While the RPS doesn't provide direct homeowner incentives, it drives utility investment in solar and signals a longer-term shift toward renewable energy in the state's electricity mix.
Is solar worth it in Idaho?
Yes. Idaho gets roughly 3.5 to 4 peak sun hours per day. While the state lacks generous rebates or tax credits, the 30% federal tax credit alone saves thousands. Combined with the property tax exemption, net metering through major utilities, and electricity rates that frequently exceed $0.14/kWh, most Idaho homeowners see a payback of 9 to 13 years and decades of reduced energy costs after that.