States › Missouri › St. Louis County
Electric utilities serving St. Louis County, Missouri
Utilities that list the county in their Form EIA-861 service territory for 2024, with each one's average price, bill and outage minutes.
1 utility list St. Louis County, Missouri, in the service territory they reported to EIA for 2024: Union Electric Co.
Its average residential price was 12.56¢ per kilowatthour, against a Missouri average of 12.91¢ and a US average of 16.48¢. Each price is the utility's figure for all of its Missouri customers, not for this county alone.
The median SAIDI they reported was 148.0 minutes per customer including major event days; the median among all Missouri utilities reporting was 157.6.
The Census Bureau estimates the county's population at 990,911. EIA does not publish customers by county, so which utility serves a given address has to be confirmed with the utility or the state utility commission.
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Figures are for each utility's whole Missouri operation; EIA publishes nothing at county level.
Utilities and their 2024 figures
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| Union Electric Co | Investor-owned | 1,095,619 | 12.56¢ | $124.23 | 148.0 | 94.0 |
Ordered by residential customers in Missouri. Short-form filers are small utilities that report only totals to EIA, so no residential price is available. A utility with no customers shown reported its retail sales elsewhere or delivers power that other companies bill for.
Against the state and the country
| Measure, 2024 | Utilities listing St. Louis County | Missouri | United States |
|---|---|---|---|
| Average residential price per kWh | 12.56¢ median | 12.91¢ | 16.48¢ |
| Average monthly residential bill | $124.23 median | $129.18 | $142.26 |
| SAIDI, all events (minutes) | 148.0 median | 157.6 median | 184.5 median |
| SAIDI, without major event days | 94.0 median | 97.0 median | 99.8 median |
| Utilities counted | 1 | 45 | 1,413 |
Outage minutes reported
SAIDI for 2024 across each utility's whole system, including major event days (paler bars: only the figure without major event days was reported). Not a measure of outages in St. Louis County itself.
Population: 990,911 (U.S. Census Bureau, Vintage 2025 estimate). Statewide, residential sales came to 5,618 kWh per resident in 2024.
Other Missouri counties
- Scott County 3
- Shannon County 5
- Shelby County 5
- St. Charles County 2
- St. Clair County 6
- St. Francois County 3
- St. Louis city 2
- Ste. Genevieve County 2
- Stoddard County 3
- Stone County 5
- Sullivan County 6
- Taney County 5
All 115 counties and every Missouri utility
Questions and answers
Who provides electricity in St. Louis County?
Union Electric Co list the county in their Form EIA-861 service territory for 2024. Territories overlap, and a utility may cover only a corner of the county.
What is the electricity price in St. Louis County?
EIA has no county-level prices. The utilities serving the county reported average residential prices of 12.56¢ per kilowatthour across their Missouri customers in 2024; the state average was 12.91¢.
How reliable is power in St. Louis County?
Reliability is reported per utility, not per county. The utilities listed reported a median of 148.0 minutes of interruption per customer in 2024 including major event days and 94.0 minutes excluding them.
Provenance
Source: U.S. Energy Information Administration, Form EIA-861 for 2024, final release: service territory file (counties by utility), sales to ultimate customers, reliability and short form files. State and US averages: Form EIA-861M workbook. Population: U.S. Census Bureau. Public domain. To confirm the utility at an address, ask the utility or the state utility commission.