Is solar worth it in Iowa?
For a typical Iowa home in 2026, solar is not worth it: about a 22.7-year payback and $1,735 saved over 25 years after paying for the system. Check your own home, because roofs, usage and utilities vary a lot.
- Payback, typical home
- 22.7 yrs3.7 kW, paying cash
- Electricity price
- 14.1¢per kWh, U.S. 18.0¢
- Solar production
- 1,369kWh per kW per year
- Exports credited at
- RetailFull retail net metering
The numbers for a typical Iowa home
| Electricity use | 852 kWh a month (Iowa average) |
|---|---|
| Best-value system | 3.7 kW, producing 5,065 kWh a year (50% of use) |
| Price | $15,525 at about $3.75/W |
| First-year savings | $716 |
| Payback | 22.7 years |
| 25-year net | $1,735 (0.8% a year return) |
| Rate increase assumed | 1.6% a year, from Iowa's 2015–2025 history |
Paying cash, no federal credit, 5% discount rate, microinverters, $25 per kW a year for maintenance and repairs. Methodology.
Why it comes out this way
- Electricity is cheap: 14.1¢ per kWh, 21% below the U.S. average (18.0¢), so each solar kWh saves less.
- Most utilities credit exported solar at or near the retail rate, so you get full value for midday surplus.
- A typical system here produces about 1,369 kWh per kW per year (ranked #28 of 51).
- There is no federal tax credit for homeowners who buy in 2026, which adds several years to payback compared with 2025.
Net metering and export rules in Iowa
Full retail net metering. Iowa's two investor-owned utilities (MidAmerican and Alliant) credit solar exports at the retail energy rate through net billing or inflow-outflow billing. Customers who connect before a future value-of-solar rate takes effect (by July 2027 at the latest) keep retail-rate export credit for 20 years.
Outflow credited at the applicable retail volumetric (energy) rate until the IUB approves a value-of-solar methodology (by July 1, 2027 or 5% DG penetration). After that, new outflow rates follow the VOS rate, changing at most 5% per year.
- Netting: varies
- Unused credits: Net billing: credits carry forward; inflow-outflow: dollar credits carried forward. Annual handling per utility tariff.
- System size limit: 1000 kW
- Fixed charges: Standard customer charges; SF 583 prohibits solar-specific charges not applied to other customers in the class.
- Last major change: SF 583 (2020) established inflow-outflow/net billing and VOS framework (Iowa Code 476.49).
- Pending: Value-of-solar study/methodology must be in place by July 1, 2027; customers interconnecting before then keep retail outflow rate for 20 years (verify grandfathering details).
Read net metering explained to see why export rules can swing payback by years.
| Utility | Export credit | Notes |
|---|---|---|
| MidAmerican Energy | ~90% of retail | Inflow-outflow billing at retail energy rate. Relatively low retail rates. |
| Interstate Power & Light (Alliant Energy) | ~90% of retail | Inflow-outflow billing at retail energy rate. |
Solar incentives in Iowa
The federal 30% Residential Clean Energy Credit ended for systems installed after December 31, 2025. What that means.
| Program | Type | What you get | Status |
|---|---|---|---|
| Iowa solar sales tax exemption | sales tax exemption | Solar energy equipment exempt from state sales tax (Iowa Code 423.3). Eligibility: Solar equipment purchases. | active |
| Solar property tax special valuation | property tax exemption | Five-year special valuation excluding solar value from assessment (Iowa Code 427B.26); availability depends on local action and sunset status - verify. Eligibility: Apply with local assessor. | unknown |
Ended programs: Iowa Solar Energy System Tax Credit.
What solar costs in Iowa
A fair cash price is around $3.75 per watt before incentives. For the 3.7 kW system that fits a typical home, expect roughly $11,800 to $16,700; smaller systems cost more per watt.
How many homes have solar
- Homes with net-metered solar (2025)
- 19,220
- Share of homes
- 1.3%
- Residential solar capacity
- 191 MW
- Growth over the past year
- +13.9%
Sources: EIA-861 (2025), EIA small-scale solar estimates, LBNL Tracking the Sun and state interconnection data.
Electric utilities in Iowa
| Utility | Homes served | Price (2026 est.) | Typical use | Typical-home verdict |
|---|---|---|---|---|
| MidAmerican Energy | 639,558 | 11.5¢ | 821 kWh/mo | Not worth it |
| Alliant Energy (Interstate Power & Light) | 419,451 | 18.4¢ | 739 kWh/mo | Close call |
| Corridor Energy Cooperative | 30,992 | 14.7¢ | 887 kWh/mo | Not worth it |
| City of Ames | 25,123 | 12.6¢ | 597 kWh/mo | Not worth it |
| Eastern Iowa Light & Power Cooperative | 20,472 | 15.4¢ | 1,197 kWh/mo | Not worth it |
| Cedar Falls Utilities | 17,746 | 12.0¢ | 836 kWh/mo | Not worth it |
| Midland Power Cooperative | 12,083 | 14.2¢ | 1,479 kWh/mo | Not worth it |
| Maquoketa Valley Rrl Electric Cooperative | 11,161 | 14.3¢ | 1,112 kWh/mo | Not worth it |
| Board of Water Electric & Communications | 10,105 | 13.4¢ | 833 kWh/mo | Not worth it |
| Iowa Lakes Electric Cooperative | 9,757 | 14.3¢ | 1,520 kWh/mo | Not worth it |
| North West Rural Electric Cooperative | 9,461 | 9.8¢ | 2,299 kWh/mo | Not worth it |
| Access Energy Cooperative | 8,890 | 15.4¢ | 1,098 kWh/mo | Not worth it |
| East-Central Iowa Rural Electric Cooperative | 7,417 | 13.6¢ | 1,420 kWh/mo | Not worth it |
| Consumers Energy Cooperative | 7,121 | 15.4¢ | 1,081 kWh/mo | Not worth it |
| MiEnergy Cooperative | 6,023 | 17.4¢ | 995 kWh/mo | Close call |
| Federated Rural Electric Association | 53 | 13.1¢ | 1,249 kWh/mo | Not worth it |
| Freeborn Mower Electric Cooperative | 6 | 15.7¢ | 893 kWh/mo | Not worth it |
Solar by city in Iowa
- Des MoinesNo payback · Not worth it
- Cedar Rapids15.9-yr payback · Close call
- DavenportNo payback · Not worth it
- Sioux CityNo payback · Not worth it
- Iowa CityNo payback · Not worth it
- AnkenyNo payback · Not worth it
- West Des MoinesNo payback · Not worth it
- AmesNo payback · Not worth it
- WaterlooNo payback · Not worth it
- Council BluffsNo payback · Not worth it
- Dubuque16.1-yr payback · Not worth it
- UrbandaleNo payback · Not worth it
- Marion16-yr payback · Not worth it
- Cedar FallsNo payback · Not worth it
- BettendorfNo payback · Not worth it
- WaukeeNo payback · Not worth it
- Marshalltown15.9-yr payback · Close call
- Mason City15.8-yr payback · Close call
- Ottumwa15.8-yr payback · Close call
Protect yourself when buying
- Check the license. Iowa Electrical Examining Board electrical contractor/master electrician license; contractor registration with Iowa Division of Labor. Look up an installer
- Cancellation rights. Federal law gives you 3 business days to cancel most door-to-door sales over $25. How to cancel
- HOA and solar access. Limited: solar access easements (Iowa Code 564A); no strong HOA prohibition law confirmed.
- Community solar. No statewide program; some co-ops/munis offer community solar.
Questions about solar in Iowa
Is solar worth it in Iowa in 2026?
For a typical Iowa home, solar is not worth it. A 3.7 kW system costing about $15,525 after state incentives saves about $716 in the first year and pays back in about 22.7 years. Your result depends on your roof, usage, utility and price, so run the calculator for your address.
How much do solar panels cost in Iowa?
A reasonable cash price is around $3.75 per watt before incentives, or roughly $11,800 to $16,700 for a 3.7 kW system.
Does Iowa have net metering?
Iowa's two investor-owned utilities (MidAmerican and Alliant) credit solar exports at the retail energy rate through net billing or inflow-outflow billing. Customers who connect before a future value-of-solar rate takes effect (by July 2027 at the latest) keep retail-rate export credit for 20 years.
Is there a solar tax credit in Iowa?
The 30% federal credit for homeowners ended for systems installed after 2025. Iowa does not offer a state income tax credit for solar that we're aware of. Solar may be exempt from property tax.
How do I check a solar installer's license in Iowa?
Iowa Electrical Examining Board electrical contractor/master electrician license; contractor registration with Iowa Division of Labor.. Look up any installer with the state's license search at https://dial.iowa.gov/licenses/building/electricians.
Policy research current as of October 2026; sources include legis.iowa.gov, iaenvironment.org, programs.dsireusa.org. Electricity data: EIA, through July 2026. Found something out of date? Tell us.