Solar Calculator for Missouri: Costs, Incentives & ROI
Missouri homeowners evaluating solar will find a state with straightforward net metering policy, a meaningful but sunset-limited property tax incentive, and one consumer-protection consideration around alternative financing. The Missouri Public Service Commission (PSC) regulates net metering statewide under NEM 1.0 rules, requiring all investor-owned utilities — including Ameren Missouri, Evergy Metro, and Liberty Utilities — to compensate residential solar customers at the full retail rate for exported electricity, with a residential system size cap of one hundred kilowatts. Missouri's retail-rate NEM is more stable than neighboring Illinois, where the Smart Solar Billing transition in 2025 moved away from retail-rate compensation. Missouri's property tax incentive carries a time limitation: Mo. Rev. Stat. § 137.100(20) exempts solar energy systems from both real and personal property tax for ten years from installation. After ten years, a solar system becomes assessable at fair market value, potentially adding to annual property tax. Missouri also offers Property Assessed Clean Energy financing through participating municipalities under the Show-Me Solar Loan program — low-interest options with fifteen to twenty-five year terms where the obligation transfers to the next owner at sale. However, the Consumer Financial Protection Bureau has raised consumer-protection concerns about PACE: the lien attaches to the property rather than the individual, creating foreclosure risk if payments are missed. This content is informational only; consult a financial advisor before signing PACE. Missouri has no state solar tax credit — the thirty-percent federal Investment Tax Credit is the primary incentive for most residents.
Incentive data updated: May 2026(may be outdated)
Average Solar Cost in Missouri
Average installed solar costs in Missouri typically range from $2.75 to $2.85 per watt before incentives, moderately competitive for the Midwest region. A standard six-kilowatt residential system costs approximately sixteen thousand five hundred to eighteen thousand dollars before the federal Investment Tax Credit — comparable to neighboring Illinois and Ohio, reflecting Missouri's regional installation market. The thirty-percent federal ITC reduces net installed cost to approximately eleven thousand five hundred fifty to twelve thousand six hundred dollars. Missouri's ten-year property tax exemption under Mo. Rev. Stat. § 137.100(20) protects homeowners from reassessment during the first decade — a meaningful benefit during the loan repayment window. Missouri does not exempt solar equipment from its 4.225 percent state sales tax plus applicable local additions, meaning homeowners pay full sales tax on the installed system — a contrast with states like Wisconsin and Vermont that provide sales tax exemptions. The Show-Me Solar Loan PACE program, available through participating municipalities, can offer alternative financing structures with longer terms than conventional solar loans, but homeowners should understand the lien structure before committing. Kansas City and St. Louis metro areas typically have the deepest installer competition, with installation pricing at or below the statewide average; rural Missouri may see moderately higher pricing due to fewer competing contractors.
- Avg. installed cost
- $2.80/W
- Typical 6 kW system
- $16,500–$18,000
Top Solar Incentives in Missouri
Live incentive data not currently available for Missouri. See the federal incentive guidance via our Solar Tax Credit Calculator.
Electricity Rates in Missouri
Missouri residential electricity rates average approximately eleven to thirteen cents per kilowatt-hour — moderate nationally, near the national average, but lower than high-cost solar markets like Massachusetts, Rhode Island, or Connecticut. Ameren Missouri, serving the St. Louis metro, central Missouri, and eastern Missouri, uses tiered and time-of-use rate structures in the eleven-to-fourteen-cent range. Evergy Metro, serving the Kansas City metro and western Missouri — formed by the 2018 merger of KCP&L and Westar Energy — uses tiered rates in the twelve-to-fifteen-cent range. Liberty Utilities serves a smaller portion of southwestern Missouri with flat rates in the eleven-to-thirteen-cent range. Missouri PSC's full retail-rate net metering means exported electricity earns the same per-kilowatt-hour value as consumption, making self-consumption and grid export financially equivalent. Missouri's rates are moderate rather than high, producing reasonable but not exceptional solar ROI compared to states with rates above twenty cents per kilowatt-hour. Homeowners with higher-than-average electricity consumption — particularly those with EV charging, electric heating, or pool pumps — will best leverage Missouri's retail-rate NEM and recover installation costs more quickly. Rate trends have remained relatively stable in Missouri, with Ameren and Evergy rate cases proceeding through regular PSC review cycles.
Peak Sun Hours in Missouri
Missouri's solar resource is moderate to good for the Midwest, benefiting from its central-continental latitude and lower cloud cover than Great Lakes states. Kansas City at approximately thirty-nine degrees north latitude receives approximately four point seven to five peak sun hours per day — meaningfully better than Chicago or Minneapolis, and comparable to the Ohio-Pennsylvania corridor. St. Louis and eastern Missouri receive similar resource, averaging four point eight to five peak sun hours per day. A six-kilowatt system in Kansas City typically produces eight thousand two hundred to eight thousand eight hundred kilowatt-hours per year — adequate to offset a substantial fraction of Missouri household electricity consumption, averaging approximately one thousand kilowatt-hours per month according to EIA data. Missouri's seasonal production pattern is pronounced: summer months produce significantly more solar output than winter, with January and February production at roughly fifty-five to sixty-five percent of peak summer months. Missouri's combination of moderate electricity rates and good central-continental solar resource produces acceptable payback economics, particularly given the ten-year property tax exemption. Springfield and southern Missouri receive slightly better solar resource than Kansas City and St. Louis, benefiting from southern latitude and lower average cloud cover.
Example ROI for a 6 kW System
- Estimated annual savings
- $850
- Payback period
- 9.5 years
- 25-year net savings
- $22,000
Run a personalized estimate with your ZIP code using the Solar ROI Calculator.
Major Cities in Missouri
- Kansas City64108
- St. Louis63103
- Springfield65806
- Independence64050
- Columbia65201
Common Questions About Solar in Missouri
How does Missouri's 10-year property tax exemption for solar work?
Missouri's property tax exemption for solar is established under Mo. Rev. Stat. § 137.100(20), which exempts solar energy systems used to heat, cool, or generate electricity from both real and personal property tax for ten years from the installation date. During that ten-year window, your county assessor cannot include the solar installation value in your property tax assessment. However, year eleven marks a meaningful change: after the ten-year sunset, the system becomes assessable at fair market value. A solar system depreciates over time, so fair market value in year eleven may be modest — but property tax protection is not permanent. The exemption applies to both solar panels and battery storage systems. Missouri's ten-year exemption is more limited than Michigan, which provides a permanent full exemption, but more generous than Ohio or Georgia, which offer no statewide property tax exemption at all. Factor the post-ten-year property tax impact into long-term ROI calculations.
What is the Show-Me Solar Loan or PACE financing in Missouri, and should I use it?
Missouri offers Property Assessed Clean Energy financing through participating municipalities under programs often called the Show-Me Solar Loan. PACE allows homeowners to finance solar through a municipal assessment on the property, repaid over fifteen to twenty-five years at rates that can be competitive with traditional solar loans. The PACE obligation can transfer to the next owner at sale — you are not required to pay off the balance before selling, though disclosure is required. However, the Consumer Financial Protection Bureau has raised consumer-protection concerns about PACE: the lien attaches to the property, not the individual, creating potential foreclosure risk if payments are missed. PACE also carries a superior lien position in some cases, meaning it must be repaid before a conventional mortgage in a distressed sale. Not all Missouri cities offer PACE programs. This content is informational only; consult a financial advisor and an attorney before committing to PACE. Compare terms carefully against conventional solar loans, home equity lines, and manufacturer financing — the lien structure requires careful consideration.
Ameren Missouri vs. Evergy Metro — what is the difference for solar customers?
For net metering, the policy difference is minimal: Missouri's PSC requires all investor-owned utilities — Ameren Missouri, Evergy Metro, and Liberty Utilities — to provide net metering at the full retail rate under the same statewide NEM 1.0 rules. The residential system size cap is one hundred kilowatts for all three utilities. The primary differences lie in service territory and rate structure. Ameren Missouri serves the St. Louis metro, central Missouri, and eastern Missouri using tiered and time-of-use rate structures in the eleven-to-fourteen-cent range. Evergy Metro serves the Kansas City metro and western Missouri — formed by the 2018 merger of Kansas City Power and Light with Westar Energy — using tiered rates in the twelve-to-fifteen-cent range. Liberty Utilities serves southwestern Missouri with flat rates in the eleven-to-thirteen-cent range. A portion of Missouri is also served by rural electric cooperatives not subject to PSC NEM requirements, though many offer voluntary programs — verify your specific utility before installation. Missouri's NEM framework is more stable than Illinois's Smart Solar Billing transition — an advantage for homeowners evaluating long-term economics.
What happens to my property tax exemption after 10 years in Missouri?
After the ten-year window established under Mo. Rev. Stat. § 137.100(20), your solar system becomes assessable at fair market value under standard Missouri property tax rules. In practice, this means that at your county's next reassessment cycle following the ten-year mark, the county assessor may include the depreciated value of your solar installation in the assessed value of your property. Missouri reassesses residential property every two years, so the timing of when you first see a property tax impact depends on both your installation date and your county's reassessment schedule. The good news is that solar equipment depreciates over time — by year eleven, a system installed at seventeen thousand dollars may have a depreciated market value of five to eight thousand dollars or less, limiting the property tax impact. Still, the change is real: a county millage rate of five to eight mills on five thousand dollars of added assessed value adds twenty-five to forty dollars annually in property taxes — a manageable but non-zero cost to factor into long-term ROI projections. Homeowners who install storage alongside solar should be aware that batteries are also covered by the ten-year exemption and similarly become assessable afterward. Contact your county assessor's office to understand local reassessment schedules and how they handle solar installations after the exemption period.
Does Missouri require a special license for solar installers, and how do I verify one?
Missouri does not require a statewide solar-specific license for solar installation contractors. Instead, Missouri regulates solar installation electrical work through the standard Electrical Contractor license, administered by the Missouri Division of Professional Registration under the Department of Commerce and Insurance. You can verify an Electrical Contractor license at the Missouri Division of Professional Registration website at pr.mo.gov. Some Missouri municipalities and counties have additional local licensing or permitting requirements beyond the state Electrical Contractor license — Kansas City, St. Louis city, and St. Louis County, for example, may have municipal electrical contractor requirements that supplement state licensing. When evaluating installers, verify the state Electrical Contractor license through pr.mo.gov, check for NABCEP certification as a quality indicator beyond minimum state requirements, request references from completed Missouri installations, and verify BBB standing. Because Missouri has no solar-specific license, NABCEP certification — particularly the NABCEP PV Installation Professional credential — is a meaningful quality differentiator. Get at least three quotes to compare pricing, warranty terms, and installer experience in your county's permitting environment.
Best Solar Installers in Missouri
Missouri does not require a statewide solar-specific license. Solar installation electrical work must be performed by a contractor holding a Missouri Electrical Contractor license from the Division of Professional Registration under the Missouri Department of Commerce and Insurance. Verify your installer's Electrical Contractor license at pr.mo.gov before signing a contract. Some Missouri municipalities — including Kansas City, St. Louis city, and St. Louis County — have additional local licensing or permitting requirements beyond the state Electrical Contractor license; confirm local requirements with your county or city before proceeding. Look for NABCEP-certified professionals (particularly the PV Installation Professional credential) as a quality indicator beyond the state licensing minimum. Missouri's ten-year property tax exemption sunset at year 11 is an important financial consideration — verify with your installer that they can help you document the installation date accurately for exemption purposes.
- Get at least 3 quotes from different installers to compare pricing and equipment.
- Check installer ratings with the BBB before signing a contract.
- Verify contractor licensing with Missouri Division of Professional Registration — Electrical Contractor license (MO does not require statewide solar-specific license; some municipalities have additional requirements — consult local). Ask for proof of a 20–25 year panel warranty.
Top Utility Companies in Missouri
Ameren Missouri
Service area: St. Louis, St. Louis County, central Missouri, eastern Missouri, Jefferson City, Columbia (partial)
Tariff: tier-2, TOU
Residential rate: 11.0–14.0¢/kWh (as of 2026-05)
NEM program: MO PSC Net Metering at full retail rate — NEM 1.0; residential cap 100 kW; annual true-up at avoided-cost rate for any net annual excess generation. Ameren Missouri tariff (PSC-regulated). NEM relatively stable through 2025 PSC orders.
Evergy Metro (formerly KCP&L / Kansas City Power & Light)
Service area: Kansas City, Johnson County (KS fringe), Independence, western Missouri, Topeka area (KS)
Tariff: tier-2
Residential rate: 12.0–15.0¢/kWh (as of 2026-05)
NEM program: MO PSC Net Metering at full retail rate — NEM 1.0; residential cap 100 kW; annual true-up. Evergy formed by 2018 merger of Kansas City Power & Light (KCP&L) and Westar Energy. Missouri PSC-regulated operations. NEM stable through 2025.
Liberty Utilities Missouri
Service area: southwestern Missouri, Joplin area, Carthage
Tariff: flat
Residential rate: 11.0–13.0¢/kWh (as of 2026-05)
NEM program: MO PSC Net Metering at full retail rate — NEM 1.0; residential cap 100 kW; annual true-up at avoided-cost rate. Smaller service territory in southwestern MO.
Net Metering Policy in Missouri
- Version
- NEM NEM-1.0
- Effective date
- 2003-08-28
- Buyback rate
- retail
- System size cap
- 100 kW
- Grandfathering
- No transition planned; MO PSC NEM stable under current orders as of LAST_VALIDATED
Missouri PSC Net Metering at full retail rate — statewide uniform across all IOUs (Ameren Missouri, Evergy Metro, Liberty Utilities Missouri). Residential cap 100 kW — among the most generous in the Midwest. Annual true-up: any net annual excess generation above consumption is compensated at avoided-cost rate (lower than retail); monthly credit rollover at retail rate during year. PSC orders relatively stable through 2025; no transition to below-retail compensation currently planned. MO NEM more straightforward than Illinois Smart Solar Billing (2025 transition away from retail-rate). Note: rural electric cooperatives and municipal utilities in MO are not subject to PSC NEM requirements but many offer voluntary programs — verify with your specific utility. MO has NO state solar tax credit (only federal 30% ITC). Solar equipment NOT exempt from MO 4.225% state sales tax.
Property Tax Exemption in Missouri
- Status
- partial
- Exemption
- 100%
- Applies to
- solar-pvstorage
Mo. Rev. Stat. § 137.100(20) — solar energy system used to heat, cool, or generate electricity is exempt from BOTH real property tax AND personal property tax for 10 YEARS from the installation date. After the 10-year sunset, the solar system is assessed at fair market value (potential property tax increase beginning year 11+; system is depreciated by then, limiting impact). sunsetDate is per-system and calculated as installation date + 10 years; no single statewide date. status: 'partial' reflects the 10-year sunset window (not permanent exemption). Show-Me Solar Loan / PACE financing available through participating Missouri municipalities — informational only; CFPB caution: PACE lien attaches to property (not individual), creating potential foreclosure risk if payments are missed and superior lien position in distressed sales; consult financial advisor before PACE. Missouri has NO state solar tax credit — only federal 30% ITC. Solar equipment NOT exempt from MO 4.225% state sales tax + applicable local additions.