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Ameren Illinois rates

Ameren Illinois has one residential plan modeled here. A typical Illinois home using 697 kWh a month pays about $147 a month.

Illinois has retail choice. Prices on this page are all-in: Ameren Illinois’s delivery charges plus its default supply (the rate you pay if you have not chosen a supplier, often called the “price to compare”). If you buy supply from a retail supplier, Ameren Illinois still bills delivery and the supplier’s price replaces the supply part, so the supply rate alone is well below the all-in price shown here.

Investor-owned 1,062,810 residential customers (EIA-861, 2025) Tariffs checked November 12, 2026

Typical all-in priceDS-1 / BGS-1

21.1¢/kWh
DS-1 / BGS-1$147/mo

Residential plans

PlanTypeFixed/moJuly pricesJanuary pricesJuly weekday windows
DS-1 / BGS-1
Residential Service (DS-1 delivery + BGS-1 supply), Rate Zone I		 Tiered $16.57 21.4¢ all hours 17.0¢ 0–800 kWh · 12.5¢ over 800 kWh None

Ameren Illinois: questions

Does Ameren Illinois have peak hours?

Not on the plans modeled here: DS-1 / BGS-1 charges the same price per kWh at every hour, so when you use power does not change the bill.

Peak and off-peak hours of every utility

Charging an EV on Ameren Illinois

1,000 miles a month in a Tesla Model Y Long Range AWD (275 kWh from the wall, EPA 27.5 kWh/100 mi) at 7.2 kW, added to a typical Illinois home’s use, on each plan’s cheapest start hour versus plugging in at 6 pm. Averaged over the year.

PlanBest startCharging, best startCharging from 6 pmWhole bill with EV
DS-1 / BGS-1Any$47/mo$47/mo$194/mo

With an EV charged at its best hour, the cheapest plan overall is DS-1 / BGS-1. Compare plans on your own usage.

Cost to charge each EV on Ameren Illinois DS-1 / BGS-1

1,000 miles a month at 7.2 kW, starting at any hour, added to a typical Illinois home’s bill. Full charge: the EPA range, at the price a typical home pays for extra use (21.4¢/kWh). EPA efficiency, from the wall.

ModelkWh/100 mi1,000 mi a monthFull charge
Lucid Air Pure (2027)23.1$40/mo$20.73
Tesla Model Y Standard RWD (2026)24.3$42/mo$16.66
Tesla Model 3 Standard RWD (2026)24.3$42/mo$16.66
Toyota bZ (2027)25.5$44/mo$17.10
Tesla Model 3 Premium RWD (2027)26$45/mo$20.16
Hyundai Ioniq 6 RWD (2025)26$45/mo$19.00
Tesla Model S (2026)27.1$47/mo$23.74
Tesla Model Y Long Range AWD (2026)27.5$47/mo$19.21
Nissan Leaf 75 kWh (2026)27.8$48/mo$17.99
Chevrolet Bolt (2027)28.2$49/mo$15.78
BMW i4 eDrive40 (2026)28.5$49/mo$20.27
Kia EV3 Long Range FWD (2027)29$50/mo$19.89
Volvo EX30 Single Motor (2026)29.2$50/mo$16.28
Kia EV6 Long Range RWD (2027)29.6$51/mo$20.17
Volkswagen ID.4 (2026)29.8$51/mo$18.52
Hyundai Ioniq 5 RWD (2027)30$51/mo$20.38
Ford Mustang Mach-E RWD Extended Range (2026)30.7$52/mo$20.99
Chevrolet Equinox EV FWD (2027)31.1$53/mo$21.19
Tesla Model X (2026)32.2$55/mo$24.21
Chevrolet Blazer EV FWD (2027)32.3$55/mo$21.53
Honda Prologue FWD (2026)32.5$55/mo$21.38
Nissan Ariya FWD 87 kWh (2026)34.4$58/mo$21.24
Cadillac Lyriq RWD (2027)36.8$62/mo$25.63
Hyundai Ioniq 9 AWD (2027)38$64/mo$25.98
Kia EV9 Long Range RWD (2027)38$64/mo$24.76
Tesla Cybertruck AWD (2026)42.9$71/mo$29.78
Rivian R1S Premium (2027)42.9$71/mo$27.49
Rivian R1T Premium (2027)42.9$71/mo$27.49
Chevrolet Silverado EV Extended Range WT (2026)47.8$79/mo$43.29
Ford F-150 Lightning Extended Range (2025)47.9$79/mo$32.74

How Ameren Illinois’s plans work

DS-1 / BGS-1 (Residential Service (DS-1 delivery + BGS-1 supply), Rate Zone I). In July every kWh costs about 21.4¢, whatever the month's use. Fixed charge: $16.57 a month.

Prices on this page are all-in per kWh, before taxes: base rates, supply and every per-kWh rider in the utility’s current tariff sheets. Your bill shows them as separate lines, and riders can change between tariff revisions.

As a cross-check, Ameren Illinois billed its residential customers an average of 16.70¢ per kWh in 2025 (revenue ÷ sales, EIA-861). A plan taken from URDB is shown only if its all-in price is consistent with that figure, adjusted for Illinois’s price change since.

Sources for each plan

PlanEffectiveSeasonsSource and status
DS-1 / BGS-1
Transcribed from the utility’s tariff		 November 1, 2026 Summer pricing Jun–Sep; winter Oct–May Checked November 3, 2026
Ameren Illinois Rate PBR-R Appendix, Sheet 8.011 (DS-1 2026 charges; eff. 8/28/2025, Docket 25-0083) · Rate DS-1 Residential Delivery Service · HSS/PER informational sheet, Effective November 2026 (125th) - Wayback capture 2026-11-03: https://web.archive.org/web/20261103063607/https://www.ameren.com/-/media/rates/illinois/residential/electric-rates/historical-retail-2016-to-present/2026/aiifhss1126.ashx · HSS/PER informational sheet, Effective October 2026 (124th) · Plug In Illinois (ICC): Ameren price to compare, non-summer Oct 1 2026-May 31 2027 10.441/8.262 c/kWh; TS 2.765 c/kWh effective October 2026, changes January 2027 · ICC Historical Prices to Compare (through Sept 2026) · Rate PBR-R Annual Adjustment Factor (3.65%, 2026) · Rider RBA charges (DS-1 3.09%, 2026) · Rider MAP-R surcharge (0.01% Apr-Dec 2026) · Rider EDITA informational filing (0.00% 2026) · Rider EE charges 2026 · Rider REA informational filing (Sept 2026) · Rider CEAC charges · Rider CSESC charges · Rider ETAC informational filing · Rider USS charges · Rider EEA charges - Rate Zone I · Rider EDR charges (0.000 since 2017) · Rider EUA charges effective June 2026 · Supplemental Customer Charges (Sheet 38) and BEAC $0.80 · UCB/POR Program Charge (Apr-Dec 2026) · Rider PSP Residential Incremental Charge · Rider ESDA charges Oct 2026-May 2027 · Wayback Machine captures of every ameren.com rate PDF above, made 2026-11-03 (ameren.com blocks this server); pattern https://web.archive.org/web/20261103/<ameren URL>

Plans marked “Checked” were transcribed from the utility’s current tariff and rider sheets, all charges included, and are re-checked on the date shown in each file. Other plans come from the OpenEI U.S. Utility Rate Database (CC BY 4.0) and have not yet been checked line by line against the utility’s tariff. Always confirm the current rates on your utility’s website before switching plans.

Cities served by Ameren Illinois

Cities of 100,000 or more whose center lies in Ameren Illinois’s service territory.

Run the numbers on Ameren Illinois

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