Solar Panels Cost $7.0k-$16k in Valley County, ID | August, 2025
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How much do solar panels cost in Valley County, ID in 2025?
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It is around $3.37 per watt in the month of August, 2025 in Valley County, ID to get solar installed.
Put another way, solar panels will cost you $3,370 per 1000 watts (1 kW) of production capacounty. After deducting the 30% federal tax credit, a 5 kW solar panel system in Valley County generally costs $11,795. However, please keep in mind that a higher capacity system may be needed to adequately cover your energy needs.
Select your county from the menu on the left to find out the typical roof size and maximum solar panel capacity for homes in your area. You can review the price, payback period, and 20-year average savings for a 5 kW system installed in your county below.
Average out-of-pocket cost for a 5 kW system The upfront amount spent to buy and install solar.
Valley County: $11,795US Average: $12,523
Average Payback Period The number of years until you break even on the solar investment.
Valley County: 9 yearsUS Average: 7 years
Average Net 20-year savings The total amount of money saved over 20 years minus the out-of-pocket cost.
Valley County: $9,060US Average: $17,429
Solar Potential in Valley County
Estimated system size and solar electricity production per median viable roof in Valley County.
Roof size 787sq. ft.
Capacity 11kW DC
Electricity 15.3kkWh AC per yr.
Electricity Costs in Valley County, ID & What that Means for Your Solar Panel Pricing
The typical monthly electric bill for Valley County residents is 107.96, with an average usage of 921 kWh. Bear in mind that this figure covers smaller residences including apartments, known for less energy use.
The mean rate for electricity in Valley County, ID during August, 2025 is 11.72¢ per kWh.
Right now, an 8 kW setup will set you back about $26,960initially, but thanks to the 30% federal tax credit, you receive 30% back, reducing the total to $18,872.
Go Solar for less than your cell phone bill.
Average solar panel costs by system size in Valley County
To the left, you'll see a detailed price breakdown of the different sizes of solar panel systems implemented in Valley County. When you select a bigger solar system, the cost is higher, but it also results in higher electricity savings and a greater income tax credit.
The cost-benefit analysis for solar panels, presented in the calculator to the right and below, is based on an average electric bill of $107.96 in Valley County. By changing the $107.96 to your typical electricity bill, you can get tailored results.
System Size
Roof Size Min. space required
Electricity Value Annual Production
Est. Price
System Size 3kW
Roof Size Min. space required
215 ft²
Electricity Value Annual Production $568 a year
Est. Price
$7,077
Savings from a 3kWthis system
Est. yearly production 4,736 kWh
Est. monthly savings $47
Full payback in 5 years
Environmental Impacts
Reduces CO2 emissions by 0.86 tons a year
Equivalent to planting 39 trees a year
Equivalent to driving 2,124 mi less a year
System Size 4kW
Roof Size Min. space required
286 ft²
Electricity Value Annual Production $758 a year
Est. Price
$9,436
Savings from a 4kWthis system
Est. yearly production 6,314 kWh
Est. monthly savings $63
Full payback in 7 years
Environmental Impacts
Reduces CO2 emissions by 1.14 tons a year
Equivalent to planting 53 trees a year
Equivalent to driving 2,833 mi less a year
System Size 5kW
Roof Size Min. space required
358 ft²
Electricity Value Annual Production $947 a year
Est. Price
$11,795
Savings from a 5kWthis system
Est. yearly production 7,893 kWh
Est. monthly savings $79
Full payback in 9 years
Environmental Impacts
Reduces CO2 emissions by 1.43 tons a year
Equivalent to planting 66 trees a year
Equivalent to driving 3,541 mi less a year
System Size 6kW
Roof Size Min. space required
429 ft²
Electricity Value Annual Production $1,137 a year
Est. Price
$14,154
Savings from a 6kWthis system
Est. yearly production 9,472 kWh
Est. monthly savings $95
Full payback in 11 years
Environmental Impacts
Reduces CO2 emissions by 1.72 tons a year
Equivalent to planting 79 trees a year
Equivalent to driving 4,249 mi less a year
System Size 7kW
Roof Size Min. space required
501 ft²
Electricity Value Annual Production $1,326 a year
Est. Price
$16,513
Savings from a 7kWthis system
Est. yearly production 11,050 kWh
Est. monthly savings $108
Full payback in 13 years
Environmental Impacts
Reduces CO2 emissions by 1.96 tons a year
Equivalent to planting 90 trees a year
Equivalent to driving 4,845 mi less a year
Valley County Solar Panel Installation Incentives & Rebates | 2025
The REAP Grant can potentially cover between 80% and 100% of the installation costs for solar energy or wind turbines for rural small businesses and farms. If you think you might be in this category, we suggest verifying your qualification with our REAP Grant eligibility tool.
For those looking into residential solar options, a 30% federal income tax credit is commonly available, boosting the appeal and practicality of solar energy in various areas throughout the nation. Alongside federal incentives, there are many state and local efforts to support solar energy adoption.
Idaho features 7 solar rebate and incentive programs available from various utilities and government organizations.
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 Valley County, ID?
Planning to stay in your house beyond the solar payback period? Solar panels are a wise investment in Valley County. Over a 20 year time frame, a 5 kW solar system in Valley County, ID could save you approximately $14,115.4, with the average break even time being 9 years.
The cost of not having solar panels in Valley County, ID
Without solar panels or another backup power source, you lose out on the earlier mentioned savings and are fully dependent on your electric utility for electricity. As demonstrated by recent news, complete reliance on your utility isn't always the most favorable situation.
Annually, the utilities in Valley County have reported about 1.16 outages per customer. Each outage, on average, lasts for 142.53 minutes. In the case of major events like lightning strikes, overloaded power grids, or wildlife damage, this period can rise substantially.
Take a look at the component below to see the number of current electricity customers without power in Valley County.
A solar energy system, whether it includes a backup battery or not, should help relieve the burden of future power outages you may encounter.
Power Outages
Currently, 0 customers are being tracked in Valley County.
What impacts the cost of solar panels in Valley County, ID?
Your Energy Needs - Even though larger solar panel systems have a higher initial cost, the cost per watt decreases. Many homeowners find it advantageous to install a system that can produce enough electricity to fully cover the entirety of their electric bill. This math makes the most sense for maximum savings.
Make & Model - Solar panels and mounting equipment, like many other products, are available in a variety of makes and models. Your installer’s brand preferences might require picking a reputable installer. Superior quality materials frequently result in a more satisfactory long-term experience for buyers.
Solar Panel Type - The industry standard is now monocrystalline panels, and justifiably so. Even though they are more expensive, they generate more energy. Many installers utilize panels crafted from this material.
Your Property - No two properties or homes are the same. Trees, irregular terrain, or other obstructions can make the installation process more challenging. With the use of satellite images, many solar installers nowadays can assess your home and include these elements into the first cost estimate.
Labor Rates - The varying wages that companies give their employees result in costs that are ultimately transferred to consumers. Higher wages generally correlate with better reviews for businesses' work and customer service.
Permitting & Interconnection - The cost of installation will change depending on local permitting and utility interconnection fees. Experienced local installers will include these figures in your preliminary estimates to guarantee transparency.
See what solar panels cost in other Valley County cities
Go Solar for less than your cell phone bill.
Who are the best solar installers in Valley County?
As of August, 2025, the typical cost for solar panels in Valley County, ID is $3.37/W. After federal tax credits, the installation of a 5 kW solar panel system in Valley County, ID is estimated to cost $11,795.
Right now, Idaho has 7 rebates and incentives available through a variety of utility companies and government entities. Additionally, the vast majority qualify for the 30% federal tax credit.
Paying cash offers the most savings, yet there are several financing options available today for solar panels that are also beneficial. Initial quotes from installers will frequently include information about available financing options.
Yes, on average, 5 kW solar panels in Valley County, ID pay for themselves in 9 years, with homeowners saving approximately $14,115.4 on electricity over 20 years.
Savings from 
Environmental Impacts 
