▸ Missouri Solar Decision · 2026 Honest Test
Is solar worth it in Missouri in 2026? Yes for most homeowners. Here's how to know.
Most Missouri solar pages still reference the 30 percent federal ITC as if it were active. It expired December 31, 2025. The actual 2026 answer is more nuanced: yes for most Ameren MO and Evergy MO households who own their home, plan to stay 5+ years, have a decent roof, and use 800+ kWh per month. No in 5 specific cases. This page is the honest test, with the math reference and the no scenarios spelled out.
Written by Joshua Hayeslip · Founder and CEO, Solar Assure
The straight answer
Yes, for most Missouri homeowners. Four conditions matter.
Yes if all four apply: you own your home, you plan to stay at least 5 years, your roof gets good sun (south or west facing with under 4 hours of shade per day), and you use at least 800 kWh per month of electricity. Under those conditions, a typical 10 kW Ameren Missouri system at $25,000 pays back in approximately 11 years and delivers approximately $49,012 in net 25-year value. Solar is not worth it in 5 specific cases listed below.
The reason this answer is more nuanced than what most sites publish: the federal residential ITC under Section 25D expired December 31, 2025 under the One Big Beautiful Bill Act. Many Missouri solar pages still reference the 30 percent ITC as if it were active because their content has not been updated. As of 2026, residential homeowners cannot claim the 30 percent credit on their federal taxes.
Three additional facts shift the Missouri answer toward yes for 2026 even without the residential ITC: Ameren Missouri received approval for a 12 percent rate increase effective June 1, 2025 with another rate case pending; the Consumers Council of Missouri reports Ameren summer bills up 34.5 percent and winter bills up 32.9 percent since 2020; and AWS Project Green data center approval in Montgomery County (November 2025) plus the adjacent Project Spade development add 780 acres of new load that will require generation buildout funded through ratepayers under Missouri SB4's Construction Work in Progress provisions. In other words, Missouri rates are rising fast and more increases are virtually certain. Solar locks in a 25-year hedge against that trend.
The 4-question test
Run yourself through these four questions before anything else.
If you answer yes to all four, solar is likely worth it for your Missouri property. If you answer no to any one, address that issue first or reconsider solar.
Six scenarios where Missouri solar wins
When solar IS worth it in Missouri.
These are the six Missouri household profiles where the math is most clearly favorable. Solar Assure customers most often fall into one or more of these categories.
Five scenarios where Missouri solar does NOT make sense
When solar is NOT worth it in Missouri.
These are the cases where Solar Assure will tell you so rather than pressure a sale. Read this honestly before getting any quote.
See our When Not to Install Solar guide for the full breakdown of all 8 scenarios where solar typically does not make sense for a Missouri or Kansas homeowner. Solar Assure would rather lose business than sell to people for whom the math does not work; the guide is written from that perspective.
What changed in 2026
The post-ITC reality and why solar still works in Missouri.
Most websites have not updated their content for the One Big Beautiful Bill Act. Here's what actually changed and why Missouri solar still works in 2026.
The federal residential ITC expired December 31, 2025. Under the One Big Beautiful Bill Act signed in July 2025, Internal Revenue Code Section 25D (the 30 percent residential clean energy credit) was sunset. Systems installed in 2026 or later cannot claim the 30 percent credit on residential federal taxes. If you see a Missouri solar website still referencing the 30 percent credit, the content is out of date. Several major sources including SolarReviews, EnergySage Missouri pages, and SmartEnergyUSA still reference active 30 percent ITC at the time of this writing.
Most Missouri solar installers have not updated their pricing to reflect the Section 25D expiration because their pricing structure is built around assuming the customer claims the credit themselves.
Three Missouri-specific factors compound the favorable economics: RSMo 386.890 1:1 retail-rate net metering, RSMo 442.404 plus the 2026 Eikmeier ruling protecting against HOA bans, and aggressive utility rate increases (Ameren 12 percent June 2025, Evergy MO Metro 14.9 percent rate case filed February 2026). Missouri ratepayer protections plus rising rates create the strongest organic case for solar in the region.
Compare to alternatives
Solar vs your other options.
Before committing to solar, compare against the alternatives. For some Missouri homeowners, efficiency upgrades or geothermal are better first investments.
| Option | Typical cost | Bill reduction | Best for |
|---|---|---|---|
| Solar (10 kW Ameren MO) | $25,000 | ~70-90% offset | 800+ kWh/mo, 5+ yr horizon, decent roof |
| Energy efficiency (insulation, sealing, smart thermostat) | $3,000 - $8,000 | ~15-30% reduction | Older homes, low-income (potential weatherization grants) |
| Geothermal heat pump | $25,000 - $40,000 | ~40-60% reduction | New construction or major remodel, all-electric homes |
| Time-of-use rate plan (Evergy MO Metro) | $0 | ~10-25% if you can shift load | Households with EV, smart appliances, daytime flexibility |
| Smart thermostat alone | $200 - $400 | ~5-10% reduction | Quick win, almost all households benefit |
| Window/door upgrades | $10,000 - $25,000 | ~10-15% reduction | Pre-1980s homes with single-pane windows |
| Status quo (do nothing) | $0 | Bills rise 4%+ per year | Renters, transient households, very low usage |
For many Missouri homeowners, the right answer is efficiency upgrades first (insulation, sealing, smart thermostat) and then solar with the smaller system that the efficiency improvements enable. A 6 kW system on a tightly-sealed home produces the same useful offset as a 10 kW system on a leaky home, at a fraction of the cost. Solar Assure's quote process accounts for this: we ask about your insulation and weatherization status before recommending system size.
Decision framework
How to actually decide for your Missouri home.
About an hour of evaluation time, no commitment, gets you a real answer for your specific situation.
FAQ
Common Missouri solar decision questions.
Thirteen questions Missouri homeowners ask us most often when deciding whether solar makes sense for their home.
When is solar NOT worth it in Missouri?
Five specific scenarios where solar is not worth it in Missouri: (1) Planning to sell within 3 years. Even with home value uplift, transaction costs and the imperfect price capture on solar typically mean a net loss. (2) Heavily shaded roof with no good options. If even the best section of your roof gets less than 4 hours of unobstructed sun per day, production drops below the level where payback math works. (3) Very low electric usage. Households using less than 600 kWh per month do not have enough offset opportunity to justify the upfront cost. (4) Major roof replacement needed within 5 years. The cost of removing and reinstalling panels is typically $1,500 to $3,000 and erodes payback. Better to replace the roof first and install solar after. (5) High-interest debt or short-term cash needs. If you have credit card debt or other high-rate obligations, paying those down typically delivers better returns than solar. See our When Not to Install Solar guide for the full breakdown of all 8 scenarios.
What's a realistic Missouri payback period?
Approximately 9 to 11 years for most Missouri scenarios in 2026. A typical 10 kW Ameren Missouri system at $25,000 saves approximately $2,030 in Year 1 and pays back in approximately 11 years. A 10 kW Columbia Water and Light system (CWL still has a $5,000 utility rebate after the federal ITC expiration) at $20,000 pays back in approximately 9 years, the best Missouri scenario currently available. An 8 kW system and a 12 kW system pay back in approximately the same 11 years (Missouri's 1:1 retail rate net metering means system size has limited effect on payback percentage). For complete scenario-by-scenario math, see our Missouri Solar Payback 2026 guide.
Should I worry about Ameren rate increases?
You should account for them in the math. Ameren Missouri received approval for a 12 percent rate increase effective June 1, 2025, and Ameren has another rate case pending at the Missouri Public Service Commission. The Consumers Council of Missouri reports that Ameren summer bills have risen 34.5 percent since 2020 and winter bills have risen 32.9 percent. Ameren is also citing AWS Project Green (data center approved November 2025 in Montgomery County, Missouri) and Project Spade (adjacent 780-acre development) as drivers of new load that requires generation buildout. Missouri SB4 (signed April 2025) enables Construction Work in Progress billing, allowing Ameren to recover construction costs in customer bills before plants are operational. The combined picture: rates are rising, more increases are virtually certain, and solar is one of the few ways a homeowner can hedge against the trend by locking in a per-kWh cost for 25 years.
What about Missouri property tax on solar?
Missouri's residential rooftop solar treatment in 2026 is uncertain due to the 2022 Missouri Supreme Court ruling in Johnson v. Springfield Solar 1, LLC, No. SC99441, 648 S.W.3d 101 (Mo. banc Aug. 9, 2022), which struck down RSMo 137.100(10) as unconstitutional under Article X Section 6 of the Missouri Constitution. The ruling technically removed the prior statutory exemption, but Missouri counties have generally continued to not assess residential rooftop solar in practice (the State Tax Commission's Chapter 7-11 Assessor Manual provides guidance). Functionally most Missouri homeowners still do not see property tax bills increase after solar installation, but the legal certainty is weaker than it was before 2022. Read our Missouri Solar Property Tax Explained guide for the full breakdown including the seven failed legislative fix attempts since 2022.
What about HOAs?
Missouri has the strongest HOA solar protection in the region. RSMo 442.404 (Missouri's HOA solar access statute, enacted via SB 820 in 2022) prohibits any covenant or deed restriction from limiting or prohibiting solar panel installation on a homeowner's rooftop. The Missouri Supreme Court unanimously confirmed this in Eikmeier v. Granite Springs Home Owners Ass'n, Inc., 2026 WL 202043 (Mo. banc Jan. 23, 2026), holding that RSMo 442.404.3 applies retroactively to all covenants regardless of recording date, and that rear-only or non-street-facing rules are unenforceable when they reduce production. Read our Missouri HOA Solar Law guide for the full breakdown of what HOAs can and cannot do, plus the four-part test from RSMo 442.404.3(2). Kansas does not have an equivalent state-level statute.
What if I'm planning to move in a few years?
If you are planning to move within 3 years, solar is generally not worth it in Missouri. Even with the home value uplift that solar typically provides (multiple national studies suggest residential solar adds approximately $4 per watt to home sale value, though this varies by buyer and market), transaction costs and imperfect price capture mean a net loss for the seller. If you are planning to move in 4 to 6 years, the math is borderline and depends on your specific situation: high electric bills and good roof conditions tip toward yes. If you are planning to stay 7+ years, solar is almost certainly worth it for a Missouri homeowner who otherwise meets the 4-question test. Solar Assure's installations include documentation packages designed for transferability if you do sell mid-payback.
What other options should I consider before solar?
Before committing to solar, three alternatives are worth evaluating. First, energy efficiency upgrades: insulation, air sealing, smart thermostat, LED lighting, and ENERGY STAR appliances can reduce consumption 15 to 30 percent for a fraction of solar cost. The Missouri Department of Economic Development weatherization program may apply for income-qualified households. Second, geothermal heating and cooling: significantly more expensive upfront than solar but eliminates a much larger portion of the bill (geothermal is the heating system, not just an electricity offset). For all-electric or new-construction homes, this combines well with solar. Third, time-of-use rate plans: Evergy Missouri Metro now offers Nights and Weekends rates with a 322 percent peak/off-peak spread. For households that can shift load, the TOU plan alone can produce 15 to 25 percent savings without any solar. The right answer for many Missouri homeowners is efficiency first, then solar with the smaller system that the efficiency improvements enable.
How do I actually get a Solar Assure quote?
Use Solar Assure's free solar cost calculator at solarassure.net/solar-cost-calculator or call (636) 679-0998 to talk to Joshua directly. Quotes use Aurora Solar production modeling specific to your roof using satellite imagery and your last 12 months of utility bills. Quote includes: estimated production by month, system specifications, gross and net pricing, Year 1 savings projection, payback timeline, 25-year cumulative cash flow, and any applicable utility rebates. There is no high-pressure sales process and no commission salespeople. If your home does not pass the 4-question test in this guide, Solar Assure will tell you so rather than pressure a sale.
Joshua co-founded Solar Assure with his wife Tori in 2022 after a decade in solar sales and installation. He runs Aurora Solar production modeling for every Missouri customer personally and tracks Ameren Missouri rate cases at the Missouri Public Service Commission. He turns down approximately 1 in 4 incoming leads when the math does not work for the homeowner. Reach him at josh@solarassure.net or (636) 679-0998. Read more →
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