2026 · No Federal Tax Credit · NREL + EIA Data
Solar Panels in Missouri: Cost, Payback & ROI (2026)
Is solar still worth it in Missouri after the 30% federal tax credit expired? These pre-computed estimates use NREL PVWatts production data and current 12.0¢/kWh Missouri electricity rates for a typical home using 900 kWh/month.
Section 25D (30% federal solar tax credit) expired December 31, 2025
All numbers below reflect 2026 math with no federal residential credit. State incentives, where applicable, are noted in the section below.
Missouri Solar at a Glance
Based on a 900 kWh/month home ($108/mo electric bill at 12.0¢/kWh), 100% offset, no state rebate applied.
7.8 kW
For 900 kWh/month home
$23,087
At $2.95/W (LBNL 2024 avg)
15.4 years
Without state rebate
$1,296
Estimated annual savings
$41,445
Cumulative before rebate
$18,358
Savings minus system cost
12.0¢/kWh
below average vs. 16.0¢ U.S. avg · EIA 2025
1,380 kWh/kW/yr
moderate · 4.2 peak sun hrs/day · NREL PVWatts
Is Solar Worth It in Missouri in 2026?
Missouri's 12.0¢/kWh rate and solid Midwest solar resource make it a viable solar market. Major utilities like Ameren Missouri and KCP&L offer net metering, and the state's property tax exemption on solar applies statewide. Missouri lacks a state solar income tax credit.
For a typical Missouri home consuming 900 kWh per month, our calculation shows a 7.8 kW system needed for 100% offset. At the current national average installed cost of $2.95/W (LBNL Tracking the Sun 2024), that's $23,087 gross before any state rebates. Year-one savings of $1,296 grow each year as electricity rates escalate — the model assumes 2.5%/year (EIA AEO 2024).
The 15.4 years payback period is longer than the national average due to low electricity rates or limited solar resource. Over 25 years — the standard warranty period for most premium panels — a Missouri homeowner following this profile would save an estimated $41,445 total, for a net benefit of $18,358 after recovering the system cost.
Year-by-Year Savings Snapshot: First 10 Years
Based on 7.8 kW system, 0.5%/yr degradation, 2.5%/yr rate escalation, no state rebate.
| Year | Production (kWh) | Annual Savings | Cumulative |
|---|---|---|---|
| Year 1 | 10,800 | $1,296 | $1,296 |
| Year 2 | 10,746 | $1,322 | $2,618 |
| Year 3 | 10,692 | $1,348 | $3,966 |
| Year 4 | 10,639 | $1,375 | $5,341 |
| Year 5 | 10,586 | $1,402 | $6,743 |
| Year 6 | 10,533 | $1,430 | $8,173 |
| Year 7 | 10,480 | $1,458 | $9,631 |
| Year 8 | 10,428 | $1,487 | $11,119 |
| Year 9 | 10,375 | $1,517 | $12,636 |
| Year 10 | 10,324 | $1,547 | $14,183 |
System cost to recover: $23,087. Table shows savings without state rebate applied. Use the interactive calculator to enter your actual bill and any rebate.
Solar Incentives in Missouri (2026)
Missouri exempts solar equipment from property tax statewide and offers sales tax exemption in some jurisdictions.
- Net metering via Ameren Missouri and KCPL
- Property tax exemption on solar (RSMo 137.100)
- Ameren Missouri solar program incentives
Incentive programs change frequently. Verify current offerings at dsireusa.org or directly with your utility before making any purchasing decision.
How We Calculate Missouri Solar ROI
These estimates use the same methodology as our interactive solar ROI calculator, applied to Missouri-specific data:
System cost
$2.95/W installed
LBNL Tracking the Sun 2024
Solar production
1,380 kWh/kW/yr
NREL PVWatts v8
Electricity rate
12.0¢/kWh
EIA Residential Rates 2025
Rate escalation
2.5%/year
EIA Annual Energy Outlook 2024
Panel degradation
0.5%/year
NREL (Jordan & Kurtz, median)
System lifetime
25 years
Standard warranty period
No Section 25D (federal residential solar credit) is included — it expired December 31, 2025. State incentives are not reflected in these pre-computed figures; use the interactive calculator to enter specific rebate amounts.
Calculate With Your Actual Numbers
The figures above use statewide averages. Enter your actual monthly bill, any Missouri rebate amounts, and your offset target in our interactive calculator for a personalized estimate.
Frequently Asked Questions — Solar in Missouri
Compare Other States
Estimates are based on NREL PVWatts v8 production data, EIA 2025 electricity rates, and LBNL 2024 installed cost benchmarks. Actual savings vary by roof pitch, shading, utility rate structure, and local permit costs. This is not financial advice. Consult a licensed solar installer before making any purchasing decision.