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Editor: Katerine G., Editor & Data Researcher · Research & publishing: Electric Consumer Editorial Team · Data retrieved · Sources named on this page: EIA-861, EIA retail sales · How we got these numbers · Report an error

Union Electric Co: 12.56 ¢/kWh for homes, 94 minutes of SAIDI

In Missouri, Union Electric Co bills 1,264,469 accounts, 86.6% residential, as an investor owned utility. Businesses and industry take 58% of the 30,764,248 MWh it sells; homes take 42%.

Union Electric Co: 989 kWh a month costs roughly $124 in energy at 12.56 ¢/kWh, -2.7% on the Missouri average of 12.91 ¢.

Businesses and industry take 58% of the 30,764,248 MWh it sells; homes take 42%.

Who buys power from Union Electric Co

Business share of sales
58%homes 42% of 30,764,248 MWh

The customer mix of Union Electric Co is its own: 1,095,619 home accounts buy 42.3% of 30,764,248 MWh, 165,295 commercial accounts buy 44.4%, and the remaining 13.4% goes to 3,554 industrial and other accounts. A typical Union Electric Co home uses 11,866 kWh a year, a typical business account 82,554.

How it compares

Union Electric Co
Union Electric Co, 2024HomeBusinessBillSAIDI
Union Electric Co12.56 ¢/kWh9.73 ¢/kWh$124at 989 kWh94 minSAIDI
Missouri average against this company, which is 10 of 21 on price+0.35 ¢/kWhcompany 2.7% below+0.53 ¢/kWhcompany 5.2% below+$3a month at 989 kWh+5 mincompany 5 below
Evergy Missouri WestLowest in this table12.55 ¢/kWhcompany 0.1% above9.57 ¢/kWhcompany 1.6% above$1240 less than company119 mincompany 25 below

Compare 43 Missouri companies

Union Electric Co: 2025

No 2025 early-release row for Union Electric Co; 2024 stays the latest year.

Union Electric Co 2024 against Missouri 2025
-0.93 ¢12.56 ¢ for Union Electric Co in 2024, 13.49 ¢ for Missouri in 2025

Union Electric Co has no 2025 early-release row; for its 1,095,619 home accounts the latest year is 2024, at 12.56 ¢/kWh and 94 SAIDI minutes.

Carbon context

Union Electric Co serves 1,095,619 homes in Missouri. At 989 kWh a month that is about 648 kg of CO₂, or 7,774 kg a year, at the Missouri plant rate, state generation and not this utility: Missouri generation mix.

Union Electric Co charts

Residential price since 2015: 12.56 ¢ in 2024

11.34 ¢ in 2015, 12.56 ¢ in 2024 (+10.8%); Missouri 11.21 to 12.91 ¢.

Union Electric Co residential price 2015-2024, 2015 to 2024: 10 rows
YearUnion Electric CoGap to Missouri residentialGap to U.S. residential
201511.34+0.13-1.31
201610.73-0.48-1.82
201711.19-0.44-1.70
201810.90-0.44-1.97
201910.38-0.76-2.63
202010.35-0.87-2.80
202110.81-0.60-2.85
202211.35-0.39-3.69
202312.29-0.29-3.71
202412.56-0.35-3.92

10 rows from EIA retail sales.

CSV

Union Electric Co SAIDI, 2015-2024

96 min in 2015, 94 in 2024.

Union Electric Co SAIDI by year, 2015 to 2024: 10 rows
YearUnion Electric Co, no major events
201596
201691
201785
201886
2019106
202086
202190
202292
202393
202494

10 rows from EIA-861 survey.

CSV

Reliability: SAIDI 94.0 min

94.0 min, 0.95x the median reporter, rank 314 of 673.

min

  • Company, no major events94.0
  • Company, with major events148.0

Union Electric Co, Reliability: EIA-861 survey.

CSV

Analyst note

From 11.34 ¢ in 2015 to 12.56 ¢ in 2024, a move of +10.8%: Union Electric Co lagged its state (+15.2%) by 4.4 points, and -19.5 points against the U.S. Union Electric Co's sharpest move came in 2023, +8.3%. The latest year is the high at 12.56 ¢; the low was 10.35 ¢ (2020). 2024: +2.3% here, +2.6% for the Missouri average. SAIDI at Union Electric Co (major events excluded) went from 96 minutes in 2015 to 94 in 2024, -2%, between 85 (2017) and 106 (2019). Against the national median, Union Electric Co came in lower on SAIDI in 9 of 10 years, and 2024 ended at 94 minutes, -5 from the median. 2023: 480 minutes with major events, 93 without, the widest gap of any year. Union Electric Co has 9 cheaper and 11 higher-priced Missouri peers among 21 with 20,000+ homes. Next cheaper, Evergy Missouri West, bills 12.55 ¢ (-0.01). Next higher-priced, Black River Electric Coop, bills 12.81 ¢ (+0.24).

A 2.7% discount to Missouri comes with ordinary reliability, 94 minutes or 0.95x the national median.

Home accounts at Union Electric Co went from 1,043,603 in 2015 to 1,095,619 in 2024, +5.0%. Business customers paid 0.77 times the home price in 2024 (9.73 against 12.56 ¢); the ratio was 0.77 in 2015. SAIFI went from 0.77 in 2015 to 0.67 in 2024, between 0.67 and 0.90.

Facts

Customer accounts
1,264,46937.8% of Missouri total
Residential accounts
1,095,61937.3% of Missouri homes
Commercial accounts
165,29513.1% of the base
Residential rate
12.56 ¢/kWhplace 10 of 21, -2.7% against the state
Commercial rate
9.73 ¢/kWhplace 6 of 33, -5.2% against the state
SAIDI, no major events
94.0 minbetter than 53% of reporters
SAIFI, no major events
0.670.66x the median
SAIDI with major events
148.0 min36.5% from event days
Net-metered capacity
133.1 MW10,048 installations
Counties served
65all in Missouri
Average residential use
11,866 kWh/yr989 a month
Implied monthly bill
$124-$39 on the U.S. rate, 989 kWh
Residential rate since 2015
+10.8%11.34 to 12.56 ¢/kWh
SAIDI trend
-2%96 min in 2015, 94 in 2024

Data tables

2024 by sector, Union Electric Co

Union Electric Co sectorAccountsRate ¢/kWhGap to Missouri ¢/kWh
Residential1,095,61912.56-0.35
Commercial165,2959.73-0.53

Year by year, Union Electric Co

YearHome accounts, Union Electric CoHome ¢Business ¢RatioSAIDISAIFI
20151,043,60311.348.690.77960.77
20161,047,64010.738.370.78910.73
20171,053,59011.198.460.76850.68
20181,060,49310.908.660.79860.72
20191,066,03510.388.180.791060.90
20201,071,99910.357.900.76860.71
20211,077,43610.818.420.78900.69
20221,082,24311.358.900.78920.73
20231,087,97112.299.590.78930.67
20241,095,61912.569.730.77940.67

Peers of Union Electric Co in Missouri, place 10 of 21 on home price

Utility near Union Electric Co on priceSAIDI min, gap to Union Electric CoHome ¢, gap to Union Electric CoGap % to Union Electric CoAccounts, Union Electric Co = 1
7. Three Rivers Electric Coop+43-0.09-0.7%0.02
8. Howell-Oregon Elec Coop, IncNo data-0.02-0.2%0.02
9. Evergy Missouri West+25-0.01-0.1%0.27
10. Union Electric Co (this utility)9412.56-1.00
11. Black River Electric Coop+353+0.24+1.9%0.02
12. Intercounty Electric Coop Assn+86+0.45+3.6%0.03
13. Boone Electric Coop-44+0.84+6.7%0.03

Who buys Union Electric Co's electricity

Class at Union Electric CoAccountsOf Union Electric Co accountsOf Union Electric Co MWh soldkWh a year per Union Electric Co account
Residential1,095,61986.6%42.3%11,866
Commercial165,29513.1%44.4%82,554
Industrial and other3,5540.28%13.4%1,158,498

Union Electric Co among Ameren group

Union Electric Co and its neighbours on priceSAIDI min, gap to Union Electric CoHome ¢, gap to Union Electric CoAccounts, Union Electric Co = 1
1. Ameren Illinois Company (IL)+27-0.810.97
2. Union Electric Co (MO, this utility)9412.561.00
3. Union Electric Membership Corp (NC)-41+0.810.07

Union Electric Co: meters, rate options and solar

MeasureUnion Electric CoMissouri contextUnion Electric Co detail
Union Electric Co home meters on AMI99.9%Missouri 87.6%1,099,976 of 1,101,514 meters
Home meters, AMR (drive-by read)536Missouri figure not published0.0% of meters
Homes with daily digital access734,610Missouri figure not published67% of the 1,095,619 home accounts
Time-of-use rate for Union Electric Co homesOffered6 of 12 Missouri utilities offer one891,431 homes on dynamic pricing, 81.36% of 1,095,619
Net-metered installations10,04880% residential7.4 homes per 1,000 accounts, 13.2 kW average

Monthly energy cost by use, Union Electric Co

kWhShare of a 989 kWh monthCost a month at 12.56 ¢vs U.S.Cost a year
25025%$31.41-$9.79$377
50051%$62.81-$19.59$754
75076%$94.22-$29.38$1,131
1,000101%$125.63-$39.17$1,508
1,500152%$188.44-$58.76$2,261
2,000202%$251.25-$78.35$3,015

Outage record, Union Electric Co

Measure, Union Electric CoNo eventsAll eventsConverted
SAIDI minutes94.0148.01.57 h
SAIFI interruptions0.6700.7701.49 yr apart
CAIDI minutes140.3192.22.34 h

Territory of Union Electric Co

65 Missouri counties, region SERC:

Counties served by Union Electric CoPettisRandolphMillerOsageMorganAdairKnoxMariesMoniteauCrawfordPulaskiCaldwellMontgomeryClintonGentryGasconadeAudrainCharitonMaconLinnDaviessBollingerLivingstonWarrenMonroeWashingtonDunklinHowardColeClarkCamdenRayFranklinSte. GenevieveMarionCallawayRallsSt. FrancoisIronPikeLewisScotlandMadisonReynoldsPhelpsSt. LouisSullivanPerryBooneStoddardSt. CharlesNew MadridSalineCooperButlerDeKalbSchuylerPemiscotCape GirardeauMississippiJeffersonScottClayLincoln

Missouri other states: 65 of 65 counties of Union Electric Co drawn

Union Electric Co: 65 counties listed by EIA-861, Census 2023 outlines.

CSV
County list
  • Adair
  • Audrain
  • Bollinger
  • Boone
  • Butler
  • Caldwell
  • Callaway
  • Camden
  • Cape Girardeau
  • Chariton
  • Clark
  • Clay
  • Clinton
  • Cole
  • Cooper
  • Crawford
  • Daviess
  • DeKalb
  • Dunklin
  • Franklin
  • Gasconade
  • Gentry
  • Howard
  • Iron
  • Jefferson
  • Knox
  • Lewis
  • Lincoln
  • Linn
  • Livingston
  • Macon
  • Madison
  • Maries
  • Marion
  • Miller
  • Mississippi
  • Moniteau
  • Monroe
  • Montgomery
  • Morgan
  • New Madrid
  • Osage
  • Pemiscot
  • Perry
  • Pettis
  • Phelps
  • Pike
  • Pulaski
  • Ralls
  • Randolph
  • Ray
  • Reynolds
  • Saline
  • Schuyler
  • Scotland
  • Scott
  • St Charles
  • St Francois
  • St Louis
  • St Louis City
  • Ste Genevieve
  • Stoddard
  • Sullivan
  • Warren
  • Washington

Questions on Union Electric Co

How many customers does Union Electric Co serve in Missouri?

1,264,469 accounts in 2024: residential 1,095,619, commercial 165,295, industrial 3,554.

What is the average residential rate of Union Electric Co?

In 2024 homes paid 12.56 cents; against the Missouri average that is -2.7%.

How reliable is Union Electric Co by SAIDI and SAIFI?

SAIDI 94.0 min and SAIFI 0.67 a year, major events excluded; ratio to the national median 0.95, CAIDI 140 min.

How much solar net metering is on the Union Electric Co grid?

10,048 installations with 133.1 MW, of which residential installations number 8,059.

What is the monthly bill at Union Electric Co for average use?

989 kWh at 12.56 cents comes to about $124, energy only.

How does Union Electric Co rank on price within Missouri?

Rank 10 of 21 in Missouri on price, -2.7% against the state average; 9 charge less than 12.56 ¢.

What share of Union Electric Co sales do homes buy?

Homes take 42.3% of 30,764,248 MWh, commercial accounts 44.4%, industrial and other 13.4%; the 165,295 commercial accounts use 82,554 kWh each, 7.0 times a home.

At Union Electric Co, are smart meters in homes, with a TOU option?

1,099,976 of 1,101,514 home meters are AMI, 99.9%. Union Electric Co offers a home time-of-use rate; 891,431 customers use dynamic pricing, 81.36% of its homes.

Has Union Electric Co moved up the Missouri price list since 2015?

16th cheapest of 21 in 2015, 10th of 21 in 2024; its price rose 10.8% while Missouri rose 15.2%.

How does Union Electric Co compare with 2 similar utilities?

Place 2 of 3 on home price at 12.56 ¢ (Ameren group); median 12.56 ¢, cheapest member 11.76 ¢.

Has Union Electric Co filed 2025 data with EIA?

Union Electric Co has no early-release row; 2024 stands at 12.56 cents and 94 SAIDI minutes.

Utilities with a similar home price

Home prices nearest to Union Electric Co at 12.56 ¢/kWh in 2024, among companies with a page here, any state.

More on Union Electric Co

Rate plans on file

6 home plan records, energy charges: 5.3 to 41.3 ¢/kWh.

Who offers time-of-use and tiered rates (17 Apr 2026 snapshot).

Primary sources for Union Electric Co: 12.56 ¢/kWh for homes, 94 minutes of SAIDI

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Union Electric Co: 989 kWh a month costs roughly $124 in energy at 12.56 ¢/kWh, -2.7% on the Missouri average of 12.91 ¢.