Missouri Electricity Rates
Missouri’s average residential rate is 14¢/kWh—22% below the national average—making it a moderate-cost state (population ~6.2 million). The grid is split between Ameren Missouri (St. Louis and eastern Missouri) and Evergy (Kansas City metro), two utilities with different rate strategies and resource plans. Coal still supplies roughly half of generation but is falling fast; Callaway nuclear anchors baseload. Compare with Kansas (shared Evergy), Illinois (Ameren overlap), Oklahoma (neighbor), and Texas (retail choice).
Two Utilities, Two Cities
Missouri’s electricity story is not one monopoly grid—it is a geographic split between St. Louis and Kansas City, and between two large investor-owned utilities with different rate trajectories. Ameren Missouri anchors the east: roughly 1.2 million customers, dense metro load, and a portfolio that includes Callaway nuclear and aggressive coal retirements. Evergy Missouri Metro anchors the west: about 310,000 Missouri customers in the KC metro, with a rate path that has stayed comparatively flat while neighboring states’ rates climbed.
That rate divergence is the lead: Ameren is retiring coal, filing rate cases, and recovering stranded costs tied to legacy plants like Rush Island. Evergy has highlighted flat Missouri rates over multi-year windows even as regional peers rose—yet it has also filed for a 14.9% increase with a proposed January 2027 effective date. Whether you pay Ameren or Evergy, your bill is shaped by fuel mix, environmental compliance, and PSC-approved plans to replace retiring coal.
The lead: Missouri is a coal-to-clean transition state caught between legacy baseload and new investment. The Show-Me State is not the cheapest in America, but at 14¢/kWh residential vs. 18.05¢ nationally, it remains moderate—with future volatility concentrated in rate cases, not retail choice.
Missouri by the Numbers
Missouri’s Electric Utilities
Ameren dominates eastern Missouri from St. Louis through central corridors; Evergy dominates the Kansas City metro on the Missouri side. Liberty’s Empire District serves southwest Missouri (Joplin area). City Utilities of Springfield and Independence Power & Light are municipals with distinct local governance. Rural electric cooperatives fill the map outside the metro IOUs—important for farms, small towns, and distributed load.
The state’s largest IOU is in active rate cases and integrated resource planning. Ameren is retiring Rush Island coal and navigating stranded asset recovery while building replacement capacity and maintaining Callaway nuclear. For Ameren’s Illinois footprint, see Illinois electricity rates.
Evergy’s Missouri side has filed for a 14.9% rate increase with a proposed January 2027 effective date (subject to PSC review). Evergy has also cited multi-year Missouri rate stability versus neighboring states. Compare the Kansas side on our Kansas electricity rates page.
Liberty operates the Empire District territory—a key provider for southwest Missouri communities and industrial customers tied to regional supply chains. Tariffs and riders differ from Ameren/Evergy; check Liberty’s published schedules for class-specific rates.
Springfield’s municipal utility delivers local public-power governance and cost-of-service discipline. Community priorities and wholesale power contracts shape rates independently of the large IOUs.
Independence is known nationally as Harry Truman’s hometown; locally, IPL is a municipal that serves city residents and businesses with a distinct governance structure.
Green Rates & Clean Power in Missouri
Missouri’s stack is still coal-weighted but shifting. Customers may encounter optional green tariffs, renewable riders, or voluntary REC programs depending on utility and rate class. Pair voluntary programs with onsite solar (Missouri gets decent sun), efficiency incentives, and smart thermostats to manage bills.
Coal’s Decline: Rush Island & Stranded Assets
A decade ago, Missouri generated on the order of ~80% of its electricity from coal. Today the share is closer to ~50% and falling fast—one of the most consequential structural shifts in Midwest power markets. Retirements are not abstract; they show up in rate cases as utilities recover undepreciated plant, build replacement capacity, and pay for transmission and compliance.
Ameren’s Rush Island Energy Center became a flashpoint: the plant faced Clean Air Act issues, and regulators required scrubbers or closure. Ameren chose retirement. The policy tension is the stranded asset problem: ratepayers can end up paying for legacy plant costs while also funding new gas, renewables, and grid to replace the megawatts lost when coal comes offline.
That dynamic is why Missouri rates are rising even though the state’s cents-per-kWh still looks modest versus the national average. The coal transition is not just environmental; it is financial and political, fought through PSC dockets and public hearings.
Why “Stranded Assets” Matter on Your Bill
When a regulated utility closes a plant earlier than expected, remaining investment recovery and decommissioning can move into rate base and riders depending on commission decisions. Customers simultaneously pay for reliability investments that replace retired coal. The result is legitimate bill pressure even when wholesale gas or solar economics look favorable.
Rush Island: Timeline
Rush Island operated as a major coal-fired generator on the Mississippi River, anchoring baseload for Ameren’s eastern Missouri system.
Federal environmental enforcement and Clean Air Act obligations forced a decision: major scrubbing or shutdown.
Ameren pursued closure. Retiring coal shifts the system toward gas, renewables, and nuclear—and triggers rate case debates over who pays for undepreciated investment and replacement.
Missouri’s PSC processes recovery mechanisms, riders, and customer impacts as Ameren’s portfolio decarbonizes under real-world constraints.
Callaway Nuclear: Missouri’s Baseload Anchor
The Callaway Energy Center, near Fulton, Missouri, is the state’s only nuclear plant—a single reactor rated at about 1,236 MW. Ameren owns Callaway, and it supplies roughly 18% of Missouri generation in typical year-average data. As coal plants retire, Callaway becomes more important for baseload and grid stability, not less: it is the always-on carbon-free block that complements variable wind and peaking gas.
The operating license was extended to 2044, giving investors and regulators a long horizon for planning. Ameren has also studied advanced nuclear options, including small modular reactors (SMRs), as part of a longer-term resource strategy. For customers, Callaway is the quiet anchor behind the headlines about coal retirements.
Approximate state generation mix; shares shift annually with weather, gas prices, retirements, and imports.
Why Callaway Matters as Coal Retires
Wind and solar add megawatt-hours; they still need dispatchable partners. Callaway provides a large, stable tranche of generation that reduces reliance on volatile fuel markets for a meaningful fraction of Missouri’s annual electricity. As Rush Island-style coal exits accelerate, that baseload role becomes more visible in planning studies and reliability discussions.
Has Missouri Considered Deregulation?
No. Missouri remains a traditionally regulated electricity state. The Missouri Public Service Commission (PSC) sets rates, reviews integrated resource plans, and adjudicates rate cases for major investor-owned utilities. Ameren and Evergy operate as regulated monopolies in their territories, with obligations to serve and commission oversight of capital plans.
Missouri briefly considered retail restructuring in the late 1990s/early 2000s wave that swept many states, but never enacted broad retail choice. With moderate average rates (14¢/kWh residential vs. 18.05¢ national) and a two-utility geography, there has been limited political momentum for Texas-style shopping. Municipal utilities and co-ops add further complexity to any hypothetical market design.
States with Full Retail Electricity Choice
Missouri uses PSC regulation, but customers in these states can shop competitive electricity rates with full retail choice:
Texas · Ohio · Pennsylvania · Illinois · Connecticut · New York
Missouri Business Electricity Rates
Commercial rates near 11.25¢/kWh support heavy manufacturing, agriculture, and iconic consumer brands. Missouri’s economy blends auto plants, aerospace, row-crop and livestock agriculture, and beer production—each with large, power-sensitive loads.
Auto Manufacturing
GM Wentzville and Ford Kansas City Assembly (including F-150 production) anchor high-volume vehicle manufacturing. Stamping, paint, and body shops draw sustained megawatt demand with tight power-quality requirements.
Aerospace & Defense
Boeing in St. Louis supports defense programs including F/A-18 and F-15 work—composite curing, machining, and test facilities that run large electrical loads.
Agriculture
Missouri is a major producer of soybeans, corn, and cattle. Grain elevators, feed mills, cold storage, and processing plants cluster across rural feeders and co-op territories.
Beer & Beverage
Anheuser-Busch is headquartered in St. Louis with one of the largest breweries in the world. Brewing, packaging, and refrigeration create predictable baseload with seasonal peaks.
How to Lower Your Missouri Electricity Bill
Even at 14¢/kWh, bills respond to weather, rate design, and behavior. Stack utility programs, efficiency, and—where economics work—solar.
Ameren & Evergy Programs
Use Ameren Missouri efficiency programs and Evergy rebates for smart thermostats, HVAC, insulation, and commercial equipment. Offers change by season—verify eligibility on each utility’s site.
Weatherization & Smart Thermostats
Air sealing and attic insulation deliver fast paybacks against humid summers and cold snaps. A smart thermostat helps reduce cooling and heating waste without sacrificing comfort.
Solar & Time-of-Use
Rooftop solar can pencil out in Missouri’s decent sun resource; model credits and net metering rules with your utility. If your tariff offers time-of-use rates, shift EV charging and discretionary loads off-peak.
Frequently Asked Questions About Missouri Electricity
Why are Missouri rates rising?
Rates reflect coal retirements, replacement investment, fuel costs, and environmental compliance. Rush Island retirement and stranded-cost recovery debates are central for Ameren. Evergy has filed for a 14.9% increase with a proposed January 2027 effective date. All major changes move through PSC-approved rate cases.
What is Callaway nuclear?
Callaway Energy Center is Missouri’s only nuclear plant—a single reactor (~1,236 MW) near Fulton, owned by Ameren. It supplies roughly 18% of state generation and provides baseload as coal retires. The license runs to 2044.
Is Missouri deregulated?
No. Missouri uses traditional PSC regulation. Retail choice was discussed in the late 1990s/early 2000s but not enacted. Compare with Texas, Ohio, or Pennsylvania.
What is the average electricity rate in Missouri?
Missouri’s average residential rate is about 14¢/kWh as of March 2026—roughly 22% below the 18.05¢/kWh national average. Commercial rates average near 11.25¢/kWh (population ~6.2 million).
Who are Ameren Missouri and Evergy?
Ameren Missouri serves ~1.2 million customers across St. Louis and central/eastern Missouri. Evergy Missouri Metro serves ~310,000 customers in the Kansas City metro on the Missouri side. Evergy also operates in Kansas—see Kansas electricity rates.
What happened to Rush Island?
Rush Island was a major coal plant facing Clean Air Act compliance costs. Ameren chose retirement over scrubbing. That decision feeds stranded asset and rider debates as Missouri replaces coal with other resources.
What is Missouri’s energy mix?
Approximate shares: coal ~50% (falling), natural gas ~20%, nuclear ~18% (Callaway), wind ~8%, solar ~3%, hydro ~1%.
What is a typical monthly electric bill in Missouri?
Many Missouri homes land near ~$191/month on average, depending on size, efficiency, and seasonal HVAC use. Bills differ between Ameren and Evergy territories.
About this Data
Rate and mix figures are compiled from the U.S. Energy Information Administration (EIA), the Missouri Public Service Commission, Ameren Missouri, Evergy, and the ElectricChoice.com electric rate marketplace. Green rates (voluntary renewable tariffs and riders) vary by utility and rate class. Last data refresh: March 2026.
