How Much Does Solar Panel Installation Cost in St. Louis, MO?
St. Louis pricing is 12% below the national average. Updated for 2026.
Based on local labor rates, varied climate conditions, and St. Louis's diversified economy.See our methodology
Solar Panel Installation Pricing in St. Louis, MO
St. Louis is one of the more affordable markets for solar panel installation, with costs running about 12% below the national average. The city's diversified economy and balanced labor market create favorable conditions for competitive pricing. Getting multiple quotes from the 295K-population metro area is straightforward.
Local climate plays a direct role in solar panel installation costs here. Harsh winters and hot summers mean year-round service needs; freeze-thaw cycles affect foundations.
Market-specific factors matter in St. Louis: moderate cost of living keeps contractor rates affordable.
St. Louis has moderate permitting requirements. Depending on the scope of your solar panel installation project, you may need local permits. A licensed contractor will handle the permitting process as part of the job in most cases.
St. Louis vs National Average
What Affects Solar Panel Installation Cost in St. Louis?
System Size
4kW: $10K-$16K. 6kW: $14K-$22K. 8kW: $18K-$28K. 10kW: $22K-$35K (before tax credit)
Battery
Adding battery storage: $8,000-$15,000 (also eligible for tax credit)
St. Louis Market Conditions
moderate cost of living keeps contractor rates affordable
Local Climate Impact
harsh winters and hot summers mean year-round service needs; freeze-thaw cycles affect foundations
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Top-Rated Solar Panel Installation Pros in St. Louis, MO
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Tips to Save on Solar Panel Installation in St. Louis
- 1.The 30% federal tax credit reduces a $22,000 system to ~$15,400
- 2.Get 3-5 quotes — pricing varies significantly between installers
- 3.Check for state and local incentives in addition to the federal credit
- 4.Leasing is an option but owning provides better long-term returns
📈 Solar Panel Installation in St. Louis Cost Trends (2020–2024)
Prices have increased +17.7% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $16,444 | — |
| 2021 | $17,135 | +4.2% |
| 2022 | $18,249 | +6.5% |
| 2023 | $18,760 | +2.8% |
| 2024 | $19,360 | +3.2% |
Based on national averages adjusted for annual inflation. Actual costs vary by location and project scope.
💬 What Did You Pay?
Real costs reported by homeowners for Solar Panel Installation in St. Louis
Recent Reports
Frequently Asked Questions
How long do solar panels take to pay for themselves?
Most systems pay for themselves in 6-10 years through energy savings and then provide free electricity for another 15-20 years.
How long do solar panels last?
Most solar panels are warrantied for 25 years and continue producing at 80%+ capacity. Many last 30-40 years.
Why does solar panel installation cost different in St. Louis than other cities?
St. Louis's costs reflect local labor rates driven by the diversified economy, varied climate conditions that affect materials and scheduling, and moderate permitting requirements. The balanced labor market also influences competitive pricing.
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