Residential solar panel incentives in Iowa, at a glance
The Ames rebate is currently $500 per installed kW-DC and is capped at half of the total installation cost. Apartments do not qualify for the residential program. The IADG Energy Bank is intended for businesses and industrial facilities rather than individual homeowners. It currently offers loans from $50,000 to $300,000 for qualifying energy projects.
| Program | Incentive type | Amount | Eligible equipment or projects | Who may qualify | Administrator |
|---|---|---|---|---|---|
| Ames Electric solar installation rebate | Rebate | $500 per installed kW-DC, up to 50% of the installation cost | Rooftop solar panels | Eligible Ames Electric residential customers | Ames Electric Department |
| Property Tax Exemption for Renewable Energy Systems | Property tax protection | 100% for five full assessment years | Solar panels, solar heating and other qualifying systems | Residential, commercial, industrial and agricultural properties | Local property assessor |
| Renewable Energy Equipment Exemption | Sales tax exemption | 100% of Iowa sales tax on qualifying equipment | Panels, inverters, solar roof tiles or shingles and energy transmission equipment | All purchasers | Iowa Department of Revenue |
| IADG Energy Bank Revolving Loan Fund | Low-interest loan | 1% interest; $50,000 to $300,000, with terms of up to 10 years | Qualifying renewable energy and energy-efficiency projects | Iowa businesses and industries, with preference given to manufacturers | Iowa Area Development Group |
Iowa solar sales tax exemption
Batteries, mounting equipment and some installation materials do not qualify.
Qualifying solar energy equipment is exempt from Iowa sales tax. Covered equipment includes solar panels, inverters, solar roof tiles or shingles and equipment used to transmit converted solar energy.
The exemption does not generally cover batteries, mounting racks, foundations, fencing or other materials used to install or support the system.
Iowa solar property tax protection
For the first five full assessment years after installation, a qualifying solar system cannot increase the property’s actual, assessed or taxable value. Iowa law also requires assessors to disregard any increase in a building’s market value caused by the solar system, providing additional protection after the initial five-year period.
Iowa law also provides continuing protection for market value the system adds to a building.
What to know about net metering in Iowa
Iowa does not have one statewide net metering program that works the same way for every utility. MidAmerican Energy and Alliant Energy’s Iowa utility, Interstate Power and Light Company, use inflow-outflow billing for newer solar installations. Municipal utilities and rural electric cooperatives may set their own compensation rules.
Under inflow-outflow billing, the utility separately measures:
- Inflow: Electricity you draw from the grid
- Outflow: Excess electricity your system sends to the grid
For qualifying systems, MidAmerican and Alliant credit outflow at the retail volumetric electricity rate, including applicable volumetric riders. However, the calculation is performed during individual 15-minute intervals rather than by subtracting all monthly exports from all monthly electricity use.
What happens to unused credits?
Unused credits can carry forward to later monthly bills within the customer’s annual billing period. Any credits remaining at the annual reset — generally in January or April — expire and are not converted to cash.
Ask your utility about system-size limits and when unused solar credits expire before signing a contract.
Compensation may differ if a system is designed to produce substantially more electricity than the property uses. For example, Alliant provides full inflow-outflow treatment for eligible systems designed to produce up to 110% of the customer’s annual electricity use, subject to a 1 MW limit. Electricity from the portion above those limits may be compensated at a lower avoided-cost rate.
Because unused credits expire at the end of the annual billing period, properly sizing your system can help you avoid producing more electricity than you can use or receive full credit for.
How much are solar panels in Iowa?
Before any tax credits, solar panel costs in Iowa typically range from $16,446 to $32,892.
Your system size greatly affects how much you pay overall. The typical system size for solar systems in Iowa is 8.7 kW. You might need a larger or smaller system, depending on your average household energy use.
Average solar cost by system size in Iowa
| 5 kW | 6 kW | 7 kW | 8 kW | 9 kW | 10 kW | |
|---|---|---|---|---|---|---|
| Statewide | $16,446 | $19,735 | $23,024 | $26,314 | $29,603 | $32,892 |
| Des Moines | $16,442 | $19,730 | $23,018 | $26,306 | $29,595 | $32,883 |
Find solar companies in Iowa
A good solar company helps you navigate local incentives, permitting and net metering policies. Compare our picks for Iowa's top solar companies to learn more.
| Company | Customer rating | Pro install | Payment options | Year founded | |
|---|---|---|---|---|---|
 ION Solar | Learn More | 3.9 |  | Cash, loan | 2013 |
 Green Home Systems | Learn More | 1.0 | | Cash, loan | 2017 |
 Tesla Energy | Learn More | 2.1 | | Cash, loan and lease | 2015 |
 Project Solar | Learn More | 4.0 | | Cash, loan | 2020 |
 ShopSolar | Learn More | 4.4 |  | Cash, loan | 2018 |
Ways to pay for solar panels in Iowa
You can buy your system outright, but most people finance solar panels. A solar loan works a lot like any other type of loan — there’s an application and approval process, and you pay it back over time (with interest). If you are considering a solar loan, lease or power purchase agreement, always ask:
- Is there a down payment?
- How much will I pay per month?
- Will monthly payments increase, and by how much?
» SOLAR PANELS: Lease vs. buy
Federal solar loan programs
The 30% federal solar tax credit expired at the end of 2025, but a few standing federal programs can still help Iowa homeowners offset the cost of going solar. FHA- and HUD-backed Energy-Efficient Mortgage programs let Iowa homebuyers finance the cost of solar panels and other efficiency upgrades directly into their home loan.
FAQ
Can I get solar panels for free in Iowa?
There are no programs offering free solar panels in Iowa, but you can lease solar equipment or enter a power purchase agreement (PPA) with minimal upfront costs. Still, neither is totally free. Solar leases generally require a flat monthly fee; PPAs make you pay per unit of electricity.
» FREE SOLAR PANELS: Are they really free?
How much can I save with solar panels in Iowa?
On average, Iowa homeowners with solar panels avoid $19,413 in utility costs over 25 years. Even if you don’t generate 100% of your energy needs, you can still save a lot of money compared with traditional utility bills. In Iowa, solar panels usually pay for themselves within 17.11 years.
What has Iowa’s investment in solar been so far?
Total solar investments in the state amount to $1.9 billion, according to the Solar Energy Industries Association.
How do I know if my house is a good candidate for solar?
It’s best to have plenty of unshaded roof space that faces south or west for optimal sun exposure. It’s also smart to upgrade any old, inefficient appliances first. Reducing your electrical loads now means you can get a smaller system, which will be cheaper.
The condition of your roof matters too — if it needs replacement soon, do that before installing solar panels. Installing solar panels on an old roof might mean you have to remove the panels, replace your roof and then reinstall the panels. This will cost around $5,000 for a 19-panel setup.
Solar photovoltaic (PV) technologies, more commonly known as solar panels, absorb sunlight and convert it into usable electricity. If you have a lot of shading around your house, they might not get enough sun to power your home.
Bottom line
The ConsumerAffairs Research Team conducted an in-depth analysis to determine the average costs of going solar and incentives in other states. Turns out, it’s worth it for many homeowners, particularly in Iowa.
Solar costs vs. savings: Iowa 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** | |
|---|---|---|---|---|---|
| Illinois | $18,415 | $30,691 | 7.3 kW | $3.07 | $28,060 |
| Iowa | $19,735 | $32,892 | 8.7 kW | $3.29 | $19,413 |
| Minnesota | $19,676 | $32,794 | 7.6 kW | $3.28 | $18,463 |
| Missouri | $15,220 | $25,366 | 10.9 kW | $2.54 | $29,087 |
| Nebraska | $25,449 | $42,414 | 8.9 kW | $2.92 | $52,449 |
| South Dakota | $24,641 | $41,069 | 8 kW | $4.11 | $8,381 |
| Wisconsin | $19,040 | $31,733 | 7 kW | $3.17 | $37,066 |
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, “Iowa Programs.” Accessed July 22, 2026.
- MidAmerican Energy, “Iowa Energy Center Solar PV Energy Guide.” Accessed July 27, 2026.
- Iowa Environmental Council, “Clean Energy.” Accessed July 27, 2026.
- Center for Rural Affairs, “Iowa Solar Siting Resource Guide.” Accessed July 27, 2026.
- Iowa Utilities Commission, “Consumer Information Guide for On-Site Generation.” Accessed July 27, 2026.
- Solar Energy Industries Association, “Iowa Solar.” Accessed July 22, 2026.
- Iowa Department of Revenue, “Solar Energy System Tax Credits.” Accessed July 22, 2026.
