Iowa Solar Guide 2026
Everything Iowa homeowners need to know: costs, incentives, net metering policy, and what makes this state unique for solar.
Key fact about Iowa solar
Iowa's 15% state tax credit (when funded) significantly improves solar economics. MidAmerican Energy has committed to 100% renewable energy and has a streamlined interconnection process.
Peak sun hours
4.7
hrs/day avg
Avg electricity rate
11.0¢
per kWh
Median install cost
$2.9/W
before incentives
Typical payback
12 yrs
8 kW system, avg usage
Typical 8 kW system in Iowa
Annual production
13,724 kWh
Year-1 savings
$1,510
System cost (est.)
$23,200
No federal tax credit — Section 25D expired December 31, 2025.
Iowa Net Metering Policy
Full retail net metering (IUB rules)
Iowa requires full retail net metering under IUB rules. MidAmerican Energy and Alliant/Interstate Power must credit excess at retail. Monthly rollover with annual settlement at avoided cost.
Iowa Solar Incentives
Available in addition to any utility rebates. Federal 25D credit is $0 for homeowner-owned systems from 2026.
- ✓Iowa Solar Energy Tax Credit: 15% of cost (up to $5,000) — check availability as funding is limited
- ✓Property tax exemption
- ✓Sales tax exemption
Top Utilities in Iowa
Interconnection timeline: 4–8 weeks
Calculate your Iowa solar economics
Our calculators are pre-filled with Iowa data. Run any tool below.