Is solar worth it in Missouri?

What drives solar payback in Missouri

Missouri homeowners pay about 13.8¢/kWh, which is 4.6¢ below the national average. A rooftop here generates roughly 1350 kWh per kW each year — about the typical US figure. On exports, Missouri offers full retail net metering: Retail net metering plus some utility rebates help offset lower power prices.

A worked example

For a Missouri home with a $121/month power bill (typical household usage at Missouri’s rate):

That nets out to a payback of about 14.1 years — shorter than simply dividing net cost by year-one savings, because power prices climb ~2.5%/yr so your savings grow each year. Assumes 3.00 $/W installed before incentives and a typical 40% self-consumption; your actual cost, roof and usage will differ — adjust the calculator above.

Who supplies your power in Missouri

Missouri's grid is split between three investor-owned utilities and a large number of municipal and cooperative providers. Ameren Missouri covers the St Louis region and much of eastern and central Missouri. Evergy — through its Evergy Metro and Evergy Missouri West units, the former Kansas City Power & Light — serves the Kansas City area and western counties. Liberty (the old Empire District Electric) covers the south-west around Joplin. Beyond the big three, dozens of rural electric co-ops and municipals such as City Utilities of Springfield and Columbia Water & Light serve their own territories. Net-metering rights are strongest with the three investor-owned utilities; co-op and municipal terms vary, so always confirm your specific provider's policy before signing.

What you’re paid for what you export

Missouri's Net Metering and Easy Connection Act gives homeowners the good version of net metering: exports are credited at essentially the full retail rate, so a kilowatt-hour pushed out cancels one drawn back almost exactly. Credits roll forward month to month, and residential systems up to 100 kW qualify — a ceiling so far above any household array that you can ignore it. The one caveat comes at the utility's annual true-up, when any leftover balance is typically settled at the much lower avoided-cost rate rather than retail; deliberate overbuilding therefore buys you little, so size the array to your own usage. It's worth appreciating what you have here — this is the kind of full retail crediting that California and several other states have already walked away from.

Missouri incentives & taxes in 2026

The rules here are decent; the rebates are the wobbly part. Under Proposition C — the voter-approved Renewable Energy Standard — Ameren Missouri, Evergy and Liberty have historically offered per-watt solar rebates, but the amounts have shrunk over the years and the programmes are periodically capped or paused, so what's actually on offer changes frequently. Missouri does give you a property-tax exemption, meaning the array won't raise your home's assessed value. There is no statewide sales-tax exemption and no SREC market of note. Because rebate terms move so often, ask your utility for the current offer before you buy rather than trusting anything published months ago.

The 30% federal credit ended on 31 December 2025 and can now only reach a homeowner indirectly through a lease or PPA. Check the current state and utility programs on DSIRE’s Missouri list, then type any incentive into the calculator above to see how it shortens your payback.

What solar costs in Missouri

Expect roughly $2.50 to $3.10 a watt installed — about what the rest of the country pays — with the competitive St Louis and Kansas City metros at the cheaper end. Call it $20,000 to $25,000 for an 8 kW system before any utility rebate. At Missouri's 1,350 kWh per kW each year, that array generates around 10,800 kWh annually, enough to cover most households in the state. The catch sits on the other side of the ledger: at a retail rate of just 13.7 cents/kWh, each of those kilowatt-hours is worth less than it would be in a pricier state, and that is what slows the payback.

The honest verdict for Missouri

A middling case, honestly. In Missouri's favour: full retail net metering, which makes every exported kilowatt-hour genuinely valuable. Against it: power that costs only 13.7 cents/kWh — so each solar kilowatt-hour saves less than it would elsewhere — and utility rebates that have thinned out and can change without much notice. Realistic payback for an owned system runs 11 to 15 years, quicker if you catch a live rebate and use most of what you generate on-site. Solar works here; it just doesn't dazzle, so drive a hard bargain on the install price.

Driving electric — or heating electric — in Missouri?

Your home electricity rate also sets what it costs to charge an EV and whether a heat pump beats a gas furnace. See the Missouri EV charging cost and the Missouri heat pump vs gas comparison.

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