The average solar panel installation costs $2.83 per watt in Idaho. “Cost per watt” helps you compare the value of solar energy systems in different sizes.
Jump to insightOn average, Idaho homeowners with solar panels avoid $7,664 in total utility costs over 25 years.
Jump to insightLeasing solar equipment makes more sense now that the federal solar tax credit has expired.
Jump to insightHow much do solar panels cost in Idaho?
The average cost to install solar panels is $14,160 to $28,320 in Idaho.
That doesn’t include the cost of a solar storage battery, which sometimes costs as much as the panels. A battery lets you store extra solar power for later and can provide backup power during outages. Batteries are especially important for off-grid systems.
The size of your solar panel system is another big factor in your overall solar costs. The average size of solar systems in Idaho is 6.3 kW (kilowatts). Depending on your household energy usage, you might need a smaller or larger system.
Solar panel costs by system size in Idaho
| 5 kW | 6 kW | 7 kW | 8 kW | 9 kW | 10 kW | |
|---|---|---|---|---|---|---|
| Statewide average | $14,160 | $16,992 | $19,824 | $22,656 | $25,488 | $28,320 |
| Boise | $16,246 | $19,495 | $22,744 | $25,993 | $29,242 | $32,491 |
Are solar panels worth it in Idaho?
Installing solar panels isn't always worth it in Idaho. On average, you’ll spend $9,395 to $28,320 for panels that last about 25 years. Over that same time period, you’d avoid approximately $7,664 in total utility costs. If you charge an electric vehicle at home, solar may increase your potential savings.
One resident, Terra in Coeur d’Alene, Idaho, told us: “Happy we are part of the solar grid! With the cost of everything going up this will at least cover us with inflation. Not to mention resale value if we ever sell our home.”
Homeowners with solar panels typically save $20,000 to $90,000 over 25 years.
Idaho gets plenty of sunlight, especially in the summer, which can help solar panels perform well.
Solar doesn’t work out for everyone, but if your house is a good candidate, it’s worth considering if you like the idea of lower utility bills and more energy independence.
With the cost of everything going up this will at least cover us with inflation.”
» STILL NOT SURE? Solar energy pros and cons
Solar panel installation cost factors in Idaho
Several factors determine how much your new system will cost. The equipment — solar panels, inverters, mounting hardware and other electrical accessories — is typically the largest portion of your overall total costs (approximately 25% to 50%). Labor, which includes planning, preparing and connecting your system to the grid, accounts for 10% to 30%. Local permits and fees are a small part of your overall costs.
Solar panels
Most of your solar equipment costs come down to how much you pay for solar panels. You’ll hear installers talk about how “efficient” their panels are.
Solar panel efficiency is a measure of how well a panel makes electricity. The more efficient the solar panels you buy, the fewer panels you need. While more efficient panels cost a little more, you save by buying fewer panels.
In general, monocrystalline panels are considered the best bang for your buck. Cheaper solar panels are typically polycrystalline. The difference comes down to efficiency and materials: Monocrystalline panels are made from pure, single silicon crystals; various silicon fragments melted together are used to make polycrystalline panels.
Additional solar equipment costs
Solar arrays also contain mounting equipment, wiring and other devices, such as inverters, batteries or a monitoring system.
Solar batteries: A battery stores energy for later use. Prices depend on the battery’s storage capacity, life span, brand and other factors. Solar batteries typically cost $7,000 to $18,000, though some are $30,000 or more.
Solar inverter: Inverters convert the electricity generated by your solar panels from direct current (DC) to alternating current (AC). Inverter costs usually range from $1,000 to $3,000.
Monitoring system: Some companies include a solar monitoring system to track how much energy your system produces and if there are any problems. If not, you can buy a stand-alone monitoring system for $80 to $400.
Condition of your roof
Quality solar panels last 25 to 30 years, and your roof needs to last just as long. If you want to ensure a seamless and cost-effective solar journey, your roof must match the system's longevity.
ConsumerAffairs often hears from disgruntled solar customers who felt blindsided by expensive roof repairs needed after their solar panel installation was complete. Trust us: Get your roof inspected, fixed or replaced before you go solar.
Labor costs
Solar equipment costs are going down, but labor costs are higher than ever in some areas. Installing solar panels yourself might initially seem cheaper because you'll save on labor costs. However, it's crucial to consider several factors for safety before going the DIY route. If not installed correctly, solar panels pose safety risks, causing roof leaks and other problems.
Local permits and fees
Permits and interconnection fees, though relatively cheap, are worth mentioning. If you live inside the city limits, it's more than likely you'll need to get permits to add solar panels to your home. Expect permits to add several hundred dollars to the overall cost.
How to save money on solar panels in Idaho
There’s no way around it — solar panel installations are expensive. Here are some tips to maximize your savings on solar panels in Idaho:
- Compare quotes: Get quotes from at least three or four different solar companies in Idaho. This lets you compare different proposed equipment, pricing, financing terms and estimated energy production to find the best overall value. Don't just go with the cheapest option without vetting quality and services.
- Lower your electrical load: Before going solar, it’s smart to upgrade any old appliances. For example, replacing an old refrigerator with a more eco-friendly one reduces your electric load, which also helps lower your utility bill. If you use less electricity, you need fewer solar panels, making the whole system cheaper.
How can I pay for solar panels in Idaho?
You can pay cash, but a lot of people finance their installation costs or lease the equipment.
Solar loans works like any other type of home improvement loan. Eligible homeowners can borrow up to $40,000 through Idaho’s State Energy Loan Program, with rates from 3% to 7%.
Leasing solar panels lets you install solar with little or no upfront cost, but you don’t own the system.
» SOLAR PANELS: Lease vs. buy
Solar incentives, tax credits and rebates in Idaho
The 30% federal residential solar tax credit has expired. Idaho doesn’t offer a broad solar rebate, but homeowners may still save through a state tax deduction. The tax benefit lowers your taxable income rather than your tax bill directly, and loan funding is limited.
» LEARN MORE: Idaho solar incentives
Compare solar installation companies in Idaho
We compared ratings and reviews, equipment options, warranties, availability and other factors to pick the top solar companies in Idaho.
| Company | Customer rating | Pro install | Payment options | Year founded | |
|---|---|---|---|---|---|
 Blue Raven Solar | Learn More | 3.0 |  | Cash, loan, lease, PPA | 2014 |
 Green Home Systems | Learn More | 1.0 | | Cash, loan | 2017 |
 Tesla Energy | Learn More | 1.9 | | Cash, loan and lease | 2015 |
 ShopSolar | Learn More | 4.5 |  | Cash, loan | 2018 |
FAQ
Can I get free solar panels in Idaho?
We’re not aware of a totally free solar option in Idaho. Unfortunately, solar scams that promise free solar panels often, end up costing people quite a bit of money. A common scam involves lying about being affiliated with Idaho Power, according to a report by Elkhorn Media Group.
How does net metering work in Idaho?
Idaho doesn’t have one statewide net metering policy, so solar credits depend on your utility.
Idaho Power: Most new customers use net billing. Extra solar power earns credits that vary by season and time of day.
Avista: Eligible customers can still use traditional net metering, but unused credits expire each year.
Rocky Mountain Power: New customers use net billing, and extra power is usually credited at less than the retail electricity rate.
Rocky Mountain Power customers may also qualify for battery incentives and ongoing bill credits.
Will solar panels increase the value of my home?
Installing solar panels can significantly increase a home's value. According to a Zillow study, homes with solar panels sell for 4.1% more on average. The exact increase in value varies by location, with homes in active solar markets seeing higher boosts.
How are solar costs trending in Idaho?
The cost to go solar in Idaho has fallen 47% over the last 10 years, according to the Solar Energy Industries Association.
What’s the difference between a solar broker and a solar installer?
It comes down to how much you want to be involved in the process. A broker is helpful if you value convenience. If you want more control and potentially lower costs, it’s best to work directly with a solar installer. A solar broker is a middleman or intermediary who helps connect homeowners with solar installation companies. A solar installer specializes in designing, procuring and installing solar panels and related components.
» COMPARE: Best solar companies
How much can I save with solar panels?
On average, Idaho homeowners with solar panels avoid $7,664 in total utility costs over 25 years.
» EXPLORE: Where solar savings go the furthest
Will hail damage my solar panels?
Yes, hail can damage solar panels, but you shouldn’t let that deter you from installing them. Many solar panels can withstand smaller hail more common in areas like Idaho. The cost of fixing any damage that does occur may be covered by your homeowners insurance.
Bottom line
Residential solar panel system costs typically fall between $10,000 and $30,000 or higher, depending on factors like the system's size, local labor rates and available incentives. Idaho homeowners with solar panels can typically save more than that in total avoided energy costs over the lifetime of a system.
The ConsumerAffairs Research Team has conducted extensive research to compare the costs of going solar in Idaho and other states.
Solar costs vs. savings: Idaho and nearby states
| 6-kW system cost (before incentives) | 10-kW system cost (before incentives) | Typical system size needed* | Average cost per watt | Total utility power cost savings** | |
|---|---|---|---|---|---|
| Idaho | $16,992 | $28,320 | 6.3 kW | $2.83 | $7,664 |
| Montana | $15,947 | $26,579 | 7.1 kW | $2.66 | $30,784 |
| Nevada | $14,049 | $23,414 | 7.2 kW | $2.34 | $36,225 |
| Oregon | $16,480 | $27,466 | 5.9 kW | $2.75 | $50,441 |
| Utah | $18,120 | $30,200 | 5.8 kW | $3.02 | $31,768 |
| Washington | $16,044 | $26,740 | 7.1 kW | $2.67 | $33,367 |
| Wyoming | $19,942 | $33,238 | 6.9 kW | $3.27 | $46,147 |
Article sources
ConsumerAffairs writers primarily rely on government data, industry experts and original research from other reputable publications to inform their work. Specific sources for this article include:
DSIRE, “Idaho Programs.” Accessed Aug. 27, 2026.
EnergySage, “The cost of solar panels in Idaho.” Accessed Aug. 27, 2026.
Solar Energy Industries Association (SEIA), “Idaho Solar.” Accessed Aug. 27, 2026.
SolarReviews, “How much do solar panels cost in Idaho?” Accessed Aug. 27, 2026.
