Solar Panels Cost $9.3k-$18k in Bonneville County, ID | May, 2025
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How much do solar panels cost in Bonneville County, ID in 2025?
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You will spend, on average, $3.35 per watt to go solar in Bonneville County, ID in May, 2025.
Stemming from this cost per watt, we can come to the conclusion that for every 1 kW (1000 watts) your solar system can generate, you will have to invest, on average, $3,350 for its installation. A 5 kW panel install in Bonneville County will typically cost you $11,725 after applying the 30% federal tax credit. Keep in mind that a higher capacity system might be required to satisfy your energy requirements.
By selecting your county on the left, you can find out the typical roof size and the average maximum capacity for residential solar panel systems in your area. Below is a breakdown of the costs, payback period, and 20-year average savings for a 5 kW system installed in your county.
Average out-of-pocket cost for a 5 kW system The upfront amount spent to buy and install solar.
Bonneville County: $11,725US Average: $12,523
Average Payback Period The number of years until you break even on the solar investment.
Bonneville County: 10 yearsUS Average: 7 years
Average Net 20-year savings The total amount of money saved over 20 years minus the out-of-pocket cost.
Bonneville County: $6,266US Average: $17,100
Solar Potential in Bonneville County
Estimated system size and solar electricity production per median viable roof in Bonneville County.
Roof size 858sq. ft.
Capacity 12kW DC
Electricity 15.6kkWh AC per yr.
Electricity Costs in Bonneville County, ID & What that Means for Your Solar Panel Pricing
For Bonneville County energy consumers, the typical monthly kWh usage is 1,010, with an average electric bill of 95.90. These statistics also cover apartments and other smaller housing units, which generally have lower energy needs.
For May 2025, Bonneville County, ID's mean electricity rate is 9.5¢ per kWh.
At the moment, an 8 kW setup will cost you roughly $26,800at first, but thanks to the 30% federal tax credit, you get a 30% reimbursement, reducing the total to $18,760.
Go Solar for less than your cell phone bill.
Average solar panel costs by system size in Bonneville County
Below and on the left, there is the price breakdown for multiple sizes of solar panel systems set up in Bonneville County. The more extensive the solar array, the larger the initial expense, but also the more substantial electricity savings and income tax credits you'll get.
Refer to the solar panel cost calculator down and to the right to see the cost and benefit details derived from an average $95.90 electric bill in Bonneville County. Easily replace the $95.90 with your typical electricity bill amount to see more specific results.
System Size
Roof Size Min. space required
Electricity Value Annual Production
Est. Price
System Size 4kW
Roof Size Min. space required
286 ft²
Electricity Value Annual Production $568 a year
Est. Price
$9,380
Savings from a 4kWthis system
Est. yearly production 6,314 kWh
Est. monthly savings $47
Full payback in 8 years
Environmental Impacts
Reduces CO2 emissions by 0.16 tons a year
Equivalent to planting 7 trees a year
Equivalent to driving 390 mi less a year
System Size 5kW
Roof Size Min. space required
358 ft²
Electricity Value Annual Production $710 a year
Est. Price
$11,725
Savings from a 5kWthis system
Est. yearly production 7,893 kWh
Est. monthly savings $59
Full payback in 10 years
Environmental Impacts
Reduces CO2 emissions by 0.2 tons a year
Equivalent to planting 9 trees a year
Equivalent to driving 488 mi less a year
System Size 6kW
Roof Size Min. space required
429 ft²
Electricity Value Annual Production $852 a year
Est. Price
$14,070
Savings from a 6kWthis system
Est. yearly production 9,472 kWh
Est. monthly savings $71
Full payback in 12 years
Environmental Impacts
Reduces CO2 emissions by 0.24 tons a year
Equivalent to planting 11 trees a year
Equivalent to driving 586 mi less a year
System Size 7kW
Roof Size Min. space required
501 ft²
Electricity Value Annual Production $995 a year
Est. Price
$16,415
Savings from a 7kWthis system
Est. yearly production 11,050 kWh
Est. monthly savings $83
Full payback in 14 years
Environmental Impacts
Reduces CO2 emissions by 0.28 tons a year
Equivalent to planting 13 trees a year
Equivalent to driving 683 mi less a year
System Size 8kW
Roof Size Min. space required
572 ft²
Electricity Value Annual Production $1,137 a year
Est. Price
$18,760
Savings from a 8kWthis system
Est. yearly production 12,629 kWh
Est. monthly savings $95
Full payback in 16 years
Environmental Impacts
Reduces CO2 emissions by 0.32 tons a year
Equivalent to planting 14 trees a year
Equivalent to driving 781 mi less a year
Bonneville County Solar Panel Installation Incentives & Rebates | 2025
If you run a small business or farm in a rural area, you could receive REAP Grant support that covers 80% to 100% of your photovoltaic or wind turbine installation costs. To determine your eligibility, use our REAP Grant eligibility tool.
Installing residential solar panels comes with a 30% federal tax credit, accessible to almost all homeowners, making it a wise option for numerous areas across the country. Additionally, various state and local programs exist to further support the adoption of solar power.
Several utilities and government organizations in Idaho currently offer 7 solar rebates and incentives.
Solar incentives in IDIncentive Description Value
Questar Gas - Residential Energy Efficiency Rebate Programs
Value:Up to $50
Residential Questar Gas customers may be entitled to financial incentives for energy-efficient equipment or upgrades through the ThermWise program. Eligible projects will vary from time to time. Currently, HVAC and water heating/boiler systems, windows, insulation/weatherization, smart thermostats, and certain kitchen or laundry appliances may earn a rebate. To qualify, the equipment should conform to Questar's own standards and be installed by a participating program contractor. Additional information is available on the ThermSafe website.
Questar Gas - Home Builder Rebate Program
Value:Up to $50
Homebuilders in the Questar Gas service area are incentivized to follow energy-efficient building standards through the ThermSafe program. Rebates are offered for whole-house construction and specific parts and equipment. For the latter option, eligible projects will vary from time to time. Additional information and application forms are available from the ThermSafe website.
Questar Gas - Commercial Energy Efficiency Rebate Program
Value:Up to $75
Commercial Questar Gas customers may be entitled to financial incentives for energy-efficient equipment or building upgrades through the ThermWise program. Eligible projects will vary from time to time. Currently, HVAC and water heating systems, insulation/weatherization, and kitchen or laundry appliances may earn a rebate. The standard rebate amount is $1/saved therm for the first year, with a hard maximum of up to half of project costs. To apply, a business should submit a proposal with quantified details of expected gas usage reduction. Only projects approved with the proposal are eligible for incentives. Additional information is available from the ThermSafe website.
Idaho Power - Net Metering
Value:Varies
Idaho Power (IDP) is one of three Idaho utilities that may sign independent net metering contracts with renewable energy customers. Eligible generation technologies for net metering include solar, wind, biomass, fuel cell, and hydroelectric. At the beginning of the contract period, IDP will install or activate a bidirectional meter tracking net excess generation (NEG) sent back to the grid. Customers will receive monthly bill credits for NEG at a fixed rate. Should generation exceed consumption for a certain billing cycle, credits roll forward through the end of the year, at which point IDP will mail the customer a check for the outstanding amount. Certain capacity ceilings apply. Additional information is available through the IDP website.
Avista Utilities - Net Metering
Value:Varies
Avista Power is one of three Idaho utilities that may sign independent net metering contracts with renewable energy customers. Eligible generation technologies for net metering include solar, wind, biomass, fuel cell, and hydroelectric. At the beginning of the contract period, Avista will install or activate a bidirectional meter tracking net excess generation (NEG) sent back to the grid. Customers will receive monthly bill credits for NEG at a fixed rate. Should generation exceed consumption for a certain billing cycle, credits roll forward through the end of the year, at which point Avista will mail the customer a check for the outstanding amount. Certain capacity ceilings apply. Additional information is available through the Avista website.
Low-Interest Energy Loan Programs
Value:Varies
Residents and businesses in Idaho may be eligible for special financing on energy efficiency improvements through the State Energy Loan Program (SELP). Projects that qualify for loans include lighting, windows, insulation/weatherization, HVAC, certain large appliances, and new renewable energy systems (solar PV, small turbines, etc.) SELP applicants are subject to standard credit checks and must provide property or equipment collateral to secure the loan. Once approved, interest rates remain at 4% for a maximum 5-year payment term. A $100 (residential) or $250 (commercial) administrative fee must be paid between project approval and the credit check. Additional information is available from the Idaho Office of Energy Resources website.
Rocky Mountain Power - Net Metering
Value:Varies
Rocky Mountain Power is one of three Idaho utilities that may sign independent net metering contracts with renewable energy customers. Eligible generation technologies for net metering include solar, wind, biomass, fuel cell, and hydroelectric. At the beginning of the contract period, RMP will install or activate a bidirectional meter tracking net excess generation (NEG) sent back to the grid. Customers will receive monthly bill credits for NEG at a fixed rate. Should generation exceed consumption for a certain billing cycle, credits roll forward through the end of the year, at which point RMP will mail the customer a check for the outstanding amount. Certain capacity ceilings apply. Additional information is available through the RMP website.
Are solar panels worth it in Bonneville County, ID?
If your goal is to keep your home well past the payback period of your solar system, solar panels are an excellent choice in Bonneville County. With a 5 kW solar system in Bonneville County, ID, the average savings over a 20 period is $11,291, with break even typically occurring at 10 years.
The cost of not having solar panels in Bonneville County, ID
If you don't install solar panels or an alternative backup power source, you forgo the aforementioned savings and your household is entirely dependent on your electric utility for electricity. Numerous recent news reports have illustrated that total reliance on your utility isn't always the best idea.
Yearly, customers in Bonneville County have experienced approximately 0.66 utility outages.Each year, customers in Bonneville County have dealt with approximately 0.66 utility outages. Outages typically last for an average of 71.08 minutes. Major occurrences like wildfires, aging infrastructure, or wildlife damage can lead to a significant rise in these time frames.
Take a look at the component below to see the number of current electricity customers without power in Bonneville County.
Even without a backup battery, a solar panel system can reduce the stress of future outages you may experience.
Power Outages
Currently, 0 customers are being tracked in Bonneville County.
What impacts the cost of solar panels in Bonneville County, ID?
Your Energy Needs - With larger solar panel systems, the cost per watt declines, despite the larger upfront expense. Installing a solar panel system that can fully offset the electric bill is beneficial to homeowners because of the money saved.
Make & Model - There are a wide variety of makes and models of solar panels. The installer’s preference for system makes it crucial to pick a reputable company. Buyers generally find that utilizing higher quality equipment provides a more satisfactory long-term experience.
Solar Panel Type - The industry standard is now monocrystalline panels, and rightly so. Even though they are costlier, they provide more energy. Most installers work with panels constructed from this material.
Your Property - No two properties or homes are identical. Trees, irregular terrain, or other considerations can increase the difficulty of the installation. These days, the majority of solar installers can use satellite imagery to assess your home and include these elements into the first cost estimate.
Labor Rates - Employees get varying wages from different companies, and these costs are handed down to the consumers. Paying higher wages frequently results in companies receiving better reviews for their services and customer service.
Permitting & Interconnection - Your final installation price will be affected by the permitting and utility interconnection fees, which change by area. Quality local installers will include these figures in your first estimates to provide transparency.
See what solar panels cost in other Bonneville County cities
The typical cost per watt for solar panels in Bonneville County, ID as of May, 2025 is $3.35/W. After the federal tax credit, the estimated cost for a 5 kW solar panel system in Bonneville County, ID is roughly $11,725.
At present, there are 7 rebates and incentives available to Idaho residents from various utility and government programs. Furthermore, almost all individuals are entitled to the 30% federal income tax credit.
Paying in cash provides the highest savings, but there are multiple financing options available today for solar panels that are also beneficial. Many installers have partnerships with financing companies and will provide this information in your initial quotes.
Yes, in Bonneville County, ID, the average payback period for 5 kW solar panels is 10 years, resulting in average electricity savings of $11,291 over 20 years.
Savings from 
Environmental Impacts 
