Solar Panel Cost in Missouri (2026): Price, Payback, Incentives

Q: How much do solar panels cost in Missouri?

At the state median installed price of $3.60 per watt (estimate), a 8.4 kW (estimate) system that covers a typical home's use costs about $30,200 (estimate) before incentives. Quotes vary with roof, equipment and installer.

Solar Panel Cost in Missouri

A typical Missouri home uses 1,001 kWh a month^[1] of electricity. Covering that with solar takes a system of about 8.4 kW est.^[1,2], which costs roughly $25,500 to $35,000 est.^[1,2,3] before incentives at the state's median installed price. With Missouri's average residential price of 14.28¢ per kWh^[4], our model puts payback at about 15 years est.^[1,2,3,4,5]. Your quote, roof and utility plan will move these numbers, so treat them as a starting point.

Missouri solar at a glance

Average electricity price14.28¢/kWh^[4]Jan–Aug 2026 average (preliminary)

Average home use1,001 kWh/mo^[1]2024 average

Solar output per kW1,433 kWh/yr^[2]PVWatts estimate for Kansas City

Median installed price$3.60/W^[3]Estimate, before incentives

Typical system8.4 kWSized to cover 100% of use

Typical price$30,200Estimate, before incentives

Year-1 savings$1,720Estimate

Payback15 yearsEstimate, cash purchase

Estimates use the inputs above and the assumptions in our methodology: Missouri net metering: exports credited at the retail rate (statewide rule; your utility's tariff may differ). Prices rise 2.5% a year; panels lose 0.5% a year.

Solar cost in Missouri by system size

Same assumptions as the typical home above; only the system size changes. Prices are the state median before incentives and include the incentives our calculator applies by default in Missouri.

Estimated cost, output and payback by system size in Missouri
System	Price before incentives^[3]	After incentives	kWh in year 1^[2]	Year-1 savings^[4]^[5]	Payback (years)
4 kW	$14,400	$14,400	5,730	$820	15
6 kW	$21,600	$21,600	8,600	$1,230	15
8 kW	$28,800	$28,800	11,460	$1,640	15
10 kW	$36,000	$36,000	14,330	$1,720	17
12 kW	$43,200	$43,200	17,200	$1,720	20

Incentives that lower the price in Missouri

Federal · tax creditEnding soon

Business credit for leased and PPA systems (48E)

Claimed by the system owner, not the homeowner; solar must begin construction by July 4, 2026 or be in service by December 31, 2027^[6]

If a company owns the panels on your roof (a lease or power purchase agreement), that company may claim the business clean electricity investment credit and can reflect it in your price. You cannot claim it yourself.

Who: Third-party-owned systems (leases and PPAs). Ask the provider whether the price assumes this credit.
Deadline: December 31, 2027
Checked: November 5, 2026

All Missouri incentives, including utility and local programs →

How Missouri utilities credit your solar

Missouri's Net Metering and Easy Connection Act requires every utility (Ameren Missouri, Evergy, Liberty, co-ops and municipal utilities) to offer net metering for systems up to 100 kW: exports offset your usage at the full retail rate within each monthly billing period. If you export more than you use in a month, the surplus is credited at the utility's avoided fuel cost (Ameren Missouri: 3.84 c/kWh summer, 3.39 c/kWh winter) on the next bill, and unused credits expire after 12 months without payment.^[7]

We have not added every Missouri utility yet, so the estimates on this page use the state-level rule: Missouri net metering: exports credited at the retail rate (statewide rule; your utility's tariff may differ).^[5]

Full Missouri net metering and export-credit rules →

Next steps

Run the solar calculator with Missouri defaults and your own bill.
Missouri solar incentives
Missouri net metering and export credits
How to vet installers in Missouri
Spot solar sales red flags and compare financing before you sign.

Frequently asked questions

How much do solar panels cost in Missouri?

At the state median installed price of $3.60 per watt est.^[3], a 8.4 kW est.^[1,2] system that covers a typical home's use costs about $30,200 est.^[1,2,3] before incentives. Quotes vary with roof, equipment and installer.

How long does solar take to pay for itself in Missouri?

For a cash purchase at the state's average electricity price of 14.28¢ per kWh^[4], our model estimates about 15 years est.^[1,2,3,4,5]. Your utility's export credit and rate plan matter a lot; see the export-credit table above.

Is there still a federal solar tax credit?

Not for homeowners who buy. The Federal Residential Clean Energy Credit (25D)^[8] does not apply to systems whose installation is completed after December 31, 2025. Leased and PPA systems are different: the company that owns the system may still claim a business credit.

Change log

Nov 5, 2026Monthly output per kW in Kansas City updated to [86.9, 95.9, 114.9, 132.3, 144.8, 147.0, 150.4, 141.3, 129.7, 115.5, 93.1, 80.8] kWh/kW/month (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).

Nov 5, 2026Average solar radiation on the panels in Kansas City updated to 5.03 kWh/m2/day (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).

Nov 5, 2026Solar output per kW in Missouri (PVWatts, Kansas City) updated to 1432.6 kWh/kW/yr (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).

Nov 5, 2026What the rule says updated to “credited an amount at least equal to the avoided fuel cost of the excess kilowatt-hours generated during the billing period, with this credit applied to the following billing period” (Missouri Revised Statutes Section 386.890 - Net Metering and Easy Connection Act (read via Wayback Machine copy of 8 Oct 2026; live revisor site timed out)).