Electricity rates — Union Electric Co

What a typical bill costs

At 1,000 kWh a month the 6 generally available plans here run from $1,169.34 on 1(M) Residential Ultimate Saver Service to $1,669.56 on 1(M) Residential Evening/Morning Saver Service, with a median of $1,408.43.

Effective rates, bill divided by kilowatt-hours, span 9.7¢ to 13.9¢ per kWh at that usage.

What Union Electric Co's customers were billed in 2024

At 989 kWh a month, Union Electric Co's median open plan comes to 11.8¢ per kWh, 6% below the 12.6¢ its customers were billed in 2024, riders included. Rates set since 2024 account for some of that.

How it compares

Among the 109 utilities indexed, Union Electric Co's cheapest open plan is the 9th-lowest, 29% less than their median of $1,649.16. It sits between Louisville Gas & Electric Co ($1,162.23) and Georgia Power Co ($1,170.19).

No other utility indexed in Missouri has a cheaper open plan; the other 3 all start higher.

Its fixed charge, $9.00 a month on 1(M) Residential Ultimate Saver Service, is lower than on the cheapest plan of 92 of the other 108 utilities.

1(M) Residential Evening/Morning Saver Service is tiered: past 750 kWh a month, each kWh costs 3.4¢ less. Of the 51 utilities whose plans step, that is the 12th-largest step.

1(M) Residential Overnight Saver Service changes price with the season: a kWh costs 7.1¢ more in June to September than in October to May, and the same 1,000 kWh is billed $146.05 in its dearest month against $95.95 in its cheapest.

In the guides: What a bill costs before a single kilowatt-hour · The price that changes once the meter passes a line · The price that changes with the month

How the answer changes with usage

1(M) Residential Ultimate Saver Service is cheapest at every level tested — $638.67 a year at 500 kWh a month, $2,230.63 at 2,000 kWh.

The penalty for a poor choice grows with usage: $250.13 a year at 500 kWh against $862.89 at 2,000 kWh.

Cheapest 6 plans at 1,000 kWh a month

1(M) Residential Ultimate Saver Service — $1,169.34 a year, 9.7¢ per kWh effective, time-of-use and demand-charged. It carries a $9.00 monthly standing charge. In effect since October 2024.

1(M) Residential Overnight Saver Service — $1,351.80 a year, 11.3¢ per kWh effective, time-of-use. It carries a $9.00 monthly standing charge. In effect since October 2024.

1(M) Residential Grandfathered Optional TOD (Time Of Day) — $1,380.85 a year, 11.5¢ per kWh effective, tiered and time-of-use. It carries a $9.00 monthly standing charge. In effect since October 2024.

1(M) Residential Anytime Service Rate — $1,436.00 a year, 12.0¢ per kWh effective, tiered and priced by season. It carries a $9.00 monthly standing charge. In effect since October 2024.

1(M) Residential Smart Saver Service — $1,480.57 a year, 12.3¢ per kWh effective, time-of-use. It carries a $9.00 monthly standing charge. In effect since October 2024.

1(M) Residential Evening/Morning Saver Service — $1,669.56 a year, 13.9¢ per kWh effective, tiered and time-of-use. It carries a $9.00 monthly standing charge. In effect since October 2024.

How these plans are structured

Of 6 priceable plans: 3 tiered, 5 time-of-use, 1 priced by season, 1 with demand charges.

Every plan carries a $9.00 fixed monthly charge.

Who provides these plans

EIA-861 lists Union Electric Co serving homes in Missouri and in no other state, which is how its plans are placed there. 6 of its 6 published residential schedules can be priced.

The largest saving available here

Moving from 1(M) Residential Evening/Morning Saver Service to 1(M) Residential Ultimate Saver Service saves $500.22 a year at 1,000 kWh a month, with no change in consumption.

What this does not cover

5 of these plans price by the hour, so their figures are marked lower confidence.