A 1,800 square foot home in Kansas typically uses about 809 kWh per month at the state average rate of 13.2¢/kWh (EIA). With 5.0 peak sun hours per day, most homeowners need a 6.5 kW solar system — roughly 17 panels at 400W. After the 30% federal ITC, net cost is about $13,600, with 12.2-year payback and $33,100+ in estimated 25-year savings.
Content roles: This page is your Kansas-specific sizing decision for 1,800 sq ft. For national methodology and roof/orientation depth, see the 1,800 sq ft national guide. For bill-based sizing, see $125/month (~$107/mo equivalent in Kansas). Policy depth: Kansas solar data.
⚡ System Size
How Many Solar Panels for a 1,800 sq ft House in Kansas?
Kansas electricity rates and sun hours change panel count versus the US average:
System size (kW) = Annual kWh ÷ (Peak sun hours × 365 × 0.82)
For 1,800 sq ft in Kansas:
Estimated monthly usage: ~809 kWh
Peak sun hours: 5.0 h/day
System size:6.5 kW (~17 × 400W panels)
Metric
Kansas
US average
Rate
13.2¢/kWh
16.3¢/kWh
Sun hours
5.0 h/day
4.5 h/day
System size
6.5 kW
7.2 kW
Panels (400W)
17
19
Kansas requires a smaller system than the national average for the same square footage. Use our solar system size calculator with your actual utility bills for a precise ZIP-level result.
Find your exact solar savings
Enter your ZIP code for a personalized estimate using your state's electricity rate and sun hours.
💰 System Cost
What Does Solar Cost for a 1,800 sq ft Home in Kansas After the ITC?
At $3.00/W installed (SEIA 2026), a 6.5 kW system in Kansas costs about $19,500 before incentives. The 30% ITC saves ~$5,850, for $13,600 net cost.
📈 Payback Period
How Long Is Solar Payback on a 1,800 sq ft Home in Kansas?
A 6.5 kW system saving ~$1,115/year pays back in about 12.2 years after the ITC. At 3% rate escalation, 25-year utility spend totals ~$46,700 vs $13,600 net solar — $33,100+ lifetime advantage.
Solar vs utility company · 25-year comparison
Total cost of staying on the grid vs owning solar for a $300/month bill (national average assumptions).
Kansas does not offer a state solar tax credit. Kansas utilities are required to offer net metering under state law. Westar Energy and Kansas Gas & Electric customers can participate in net metering programs that credit excess generation at the retail electricity rate.
At Kansas's average rate of 13.2¢/kWh and 5.0 peak sun hours, a 1,800 sq ft home (~809 kWh/month) typically needs a 6.5 kW system — about 17 panels at 400W. See the [national 1,800 sq ft guide](/guides/how-many-solar-panels-1800-sq-ft/) for methodology.
A 6.5 kW system in Kansas costs roughly $19,500 installed before incentives. The 30% federal ITC reduces net cost to about $13,600. Kansas does not offer a state solar tax credit. Kansas utilities are required to offer net metering under state law. Westar Energy and Kansas Gas & Electric customers can participate in net metering programs that cred...
At $13,600 net cost and ~$1,115/year in bill savings, simple payback in Kansas is about 12.2 years.
Most Kansas homeowners in this size range see **$33,100+** estimated 25-year savings vs utility power. Equivalent monthly bill: **~$107** — compare the [$125/month bill guide](/guides/solar-panels-125-electric-bill/) for bill-based sizing.
The US average needs a 7.2 kW system at 11.0-year payback. Kansas needs 6.5 kW with 12.2-year payback at 13.2¢/kWh and 5.0 sun hours.
$125/month electric bill by state
System size and payback vary by electricity rate and sun hours — see your state.