Ameren Missouri’s residential solar rebate ended December 31, 2023, so new systems get no utility rebate today. You still net meter: Ameren credits the surplus power you export at about 3.84 cents per kWh in summer and 3.39 cents in winter, and those credits carry forward until you use them.
If Ameren Missouri is your electric utility, this page explains what rooftop solar actually pays back in 2026. The headline is the rebate, and the honest news is that the rebate you may have read about is gone. Missouri’s voter-approved utility solar rebate expired at the end of 2023, so a system you turn on today earns no Ameren rebate. What remains is net metering, a lower export credit, and the math on Missouri’s below-average power price. Here is how each piece works and how to tell if your roof is a good fit.
The rebate: what it was and why it is gone
Missouri’s residential solar rebate came from Proposition C, the clean-energy measure voters passed in 2008. Ameren Missouri paid it on a set schedule. Systems that went live between July 1, 2019 and December 31, 2023 earned 25 cents per watt, capped at 25 kW, for a maximum of about $6,250 per home. That program has closed. Ameren’s own customer-owned solar page now lists a rebate only for its Illinois customers, not for Missouri (Ameren, Customer-Owned Solar).
| When the system went live | Ameren Missouri rebate |
|---|---|
| January 1 to June 30, 2019 | 50 cents per watt |
| July 1, 2019 to December 31, 2023 | 25 cents per watt (up to 25 kW, about $6,250 max) |
| 2024 onward (including 2026) | No rebate. Program ended. |
So for any Ameren Missouri homeowner interconnecting in 2026, the upfront utility rebate is zero dollars. Verify current program status directly with Ameren before you sign anything, since utilities occasionally file new tariffs with the Missouri Public Service Commission (Missouri PSC EFIS).
An 8 kW rooftop system in St. Louis produces about 10,963 kWh per year (NREL PVWatts, typical-year model). At Missouri’s residential rate of 14.01 cents per kWh (EIA, April 2026), that output offsets roughly $1,536 of grid power in year one. We built this figure from public EIA and NREL data; your home’s result depends on roof, shade, and usage.
Ameren Missouri net metering in 2026
Net metering is now the main way solar pays you back here. The power you use in your home the moment your panels make it simply lowers your bill at the full retail rate, because you never buy it from Ameren. When your panels make more than you are using, that extra power flows to the grid and Ameren credits it at its net metering rate, not the full retail rate (Ameren, Customer-Owned Solar).
Those export credits are seasonal: about 3.84 cents per kWh from June through September and 3.39 cents per kWh from October through May, per Ameren’s current figures. Credits carry forward on your account until you use them rather than expiring each month. Because the export rate is well below the retail price, the best return comes from using your own solar power as you make it, not from banking a large surplus.
Ameren Missouri solar at a glance
| Detail | What to know (verify before you sign) |
|---|---|
| Residential rebate | None for new systems. The Proposition C rebate ended December 31, 2023. |
| Summer export credit | About 3.84 cents per kWh, June through September (Ameren). |
| Winter export credit | About 3.39 cents per kWh, October through May (Ameren). |
| Credit rollover | Credits carry forward on your account until used (Ameren). |
| System size limit | Net metering agreements up to 100 kW; nameplate also capped to your past 12-month usage. |
| Missouri power price | About 14.01 cents per kWh, below the U.S. average of 18.44 cents (EIA). |
| Before you switch on | Ameren must issue Permission to Operate. |
How Ameren Missouri interconnection works
You cannot legally run a grid-tied system until Ameren approves it. The path is straightforward for a typical home system (100 kW or less):
- Your installer files an interconnection application with Ameren, including a single-line diagram and inverter specs.
- Ameren reviews the application and, once cleared, both sides sign an interconnection agreement that enrolls you in net metering.
- You install the system and pass your local city or county electrical inspection.
- Ameren sets or reprograms a bidirectional meter that measures both the power you draw and the power you export.
- Ameren issues written Permission to Operate. Only then may you turn the system on.
Confirm the current forms, fees, and timelines on Ameren’s solar page and the utility’s tariff filings at the Missouri PSC (Missouri PSC EFIS).
Taxes and other Missouri details
The 30 percent federal residential solar credit (Section 25D) ended for systems placed in service after December 31, 2025 (IRS), so it is no longer available to new Ameren Missouri projects in 2026. Missouri has no state solar income-tax credit.
You may also see mentions of a Missouri solar property-tax exemption. Be careful there: the state statute that listed solar systems (RSMo 137.100) was ruled unconstitutional by the Missouri Supreme Court in 2022, so the exemption is not currently enforceable statewide. Verify how added solar value is assessed with your own county assessor before counting on it (Missouri Revised Statutes 137.100).
Is your Ameren Missouri home a good fit?
With no rebate and a low export credit, the strongest solar case here is a roof with good sun that lets you self-consume most of what you make, sized to your own past usage rather than oversized for export. To size the system and compare real quotes, start with our solar cost guide, weigh loan, lease, and cash options in our solar financing guide, and get the fundamentals in solar basics. You can also browse more solar resources or compare states on our solar by state hub. For the statewide picture beyond Ameren, see our Missouri solar guide and what to expect on Missouri solar costs.
A quick note: MySolarFY is a free matching service, not an installer, lender, or government program, and this page is general information, not tax advice. If you compare a lease or power-purchase agreement, read the term and any annual price escalator, since those contracts can cost more over time than an equivalent cash or loan-financed system. The federal residential tax credit is not available for new 2026 systems. Verify every rate and program figure with Ameren and your own advisors before you sign.
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Frequently asked questions
Does Ameren Missouri still offer a solar rebate?
No. The Proposition C residential solar rebate ended December 31, 2023. New Ameren Missouri systems get no utility rebate in 2026.
What does Ameren Missouri pay for solar I send to the grid?
Ameren credits exported power at about 3.84 cents per kWh from June through September and 3.39 cents per kWh from October through May. Those credits carry forward until you use them.
How big a solar system can I connect to Ameren?
Net metering agreements go up to 100 kW, and your nameplate size is also capped to your past 12 months of usage. Almost every home falls well within these limits.
Is there still a federal tax credit for Ameren Missouri solar?
No. The 30 percent federal residential credit (Section 25D) ended for systems placed in service after December 31, 2025, so it does not apply to new 2026 projects.
