Missouri electricity prices - 16.22¢/kWh (June 2026)
Residential price, average bill, and the data-center story
- Residential electricity in Missouri costs 16.22¢/kWh as of - +1.9% year over year, per U.S. Energy Information Administration data.
- The average Missouri home used 1,108 kWh that month and paid an average bill of $179.64 (+0.3% vs a year earlier).
- Missouri has the 27th-highest residential electricity price of the 50 states and DC - 12% below the U.S. average of 18.34¢/kWh.
Price by sector
| Sector | ¢/kWh (June 2026) | 1-yr change |
|---|---|---|
| Residential | 16.22¢ | +1.9% |
| Commercial | 12.71¢ | +2.3% |
| Industrial | 9.84¢ | +0.1% |
Data centers & Missouri's electric bills
Missouri regulators approved large-load tariffs for both major utilities in November 2025: Evergy's plan charges new large customers a premium rate, and Ameren Missouri's tariff requires customers of 75 MW or more to sign 12-year minimum contracts with early-exit fees. Separately, Ameren Missouri filed a rate case in June 2026 seeking $343 million (about 10%, or roughly $13 per month for an average residential customer) effective mid-2027, which the company says is not motivated by data-center demand.
- 2025-11 - The Missouri Public Service Commission approved Evergy's large-load tariff in November 2025, setting a premium rate for new large-load customers such as data centers that is higher than the rates paid by existing commercial and industrial customers. Source: St. Louis Public Radio
- 2025-11-24 - On November 24, 2025, the Missouri PSC unanimously approved Ameren Missouri's large-load tariff for customers using 75 MW or more, requiring minimum 12-year contracts, early-exit fees for leaving or under-using contracted energy, two years' notice to terminate or reduce load, and annual compliance reports. Source: St. Louis Public Radio
- 2026-06 - Ameren Missouri filed a rate case in June 2026 seeking a $343 million revenue increase - about 10%, or roughly $13 per month for an average residential customer - to take effect in mid-2027, and the company said the request is not motivated by increased energy demand from data centers. Source: St. Louis Public Radio
Each item above is dated and linked to its primary source; entries are reviewed quarterly. See the large-load tariff tracker and the who-paid-what ledger for the cross-state picture.
Water
Electricity delivered in Missouri carries 3.10 liters of water per kilowatt-hour consumed at the power plants supplying it (1.11 L/kWh excluding hydropower reservoir evaporation), against a national average of 4.28. That is below the national figure, and it is a property of the grid here rather than of any one building: a data center drawing 100 GWh a year in Missouri accounts for about 82 million gallons of power-plant water before it cools anything. All states ranked →
A data center's water use is roughly twelve times larger once the water evaporated at its power plants is counted. The Colorado River arithmetic → · how the water numbers work →
All states ranked → · Download Missouri data (CSV) · Glossary