Rate Plan Comparator

Utilities publish several plans and rarely tell you which one suits your usage. This prices every plan they offer against the same consumption, and ranks the ones a household can actually move onto today, so the ranking reflects your household rather than a headline rate.

Not every utility. 1210 tariffs from 217 utilities, retrieved up to October 8, 2026. A utility missing here is one that has not been indexed yet.

Utility

Alphabetical. Utilities with no priceable plan are left out.

Your territory

Ameren Illinois Company prices some plans separately for each territory, and a household can take only its own territory's version. The utility's bill or rate pages say which territory an address is in.

Your current plan (optional)

The plan name is on your bill. Choose it to see what moving to the cheapest open plan would save.

Electricity used each month

One number, or twelve separated by commas. Which plan wins often changes with the season, so a year of real figures is worth entering.

Sales or utility tax

Applied equally to every plan, so it shifts the totals but not the ranking.

Include fixed monthly charges

Worth turning off and on: a plan with a cheap rate and a high standing charge can win at high usage and lose at low usage.

Choose your territory to rank these plans

Ameren Illinois Company publishes some of its plans once for each of 3 territories, and a household can take only its own territory’s version. The cheapest territory is not a choice anyone can make, so nothing is called cheapest until you choose. Across every territory, the plans open to every household cost $2,505.68 to $5,090.84 a year at this usage.

Plans open to every household, by territory

Annual cost of each plan open to every household at the entered consumption
Plan	Per year	Effective	Confidence
DS-1 Residentialpriced by season · tiered · 2 territories · in effect since March 2026 Price in each territory Zone 2: $2,505.68 Zone 3: $5,090.84	$2,505.68 – $5,090.84	23.2¢ – 47.1¢	High confidence

Restricted plans — priced, not ranked (2)

Means-tested, closed to new customers, needing particular equipment, or only part of a bill. Each is priced so a household that qualifies can compare it.

Annual cost of each restricted plan at the entered consumption
Plan	Per year	Effective	Confidence
DS-1 Residentialpriced by season · tiered · 2 territories · in effect since March 2026 · delivery charges only Price in each territory Zone 1: $2,082.60 Zone 3: $2,140.68	$2,082.60 – $2,140.68	19.3¢ – 19.8¢	High confidence

Older schedules — priced, not ranked (1)

Open to any household on paper, but not a current price: in effect more than 3 years before the rates were checked, undated, or from a utility that no longer sells them.

Annual cost of each older schedule at the entered consumption
Plan	Per year	Effective	Confidence
DS-1priced by season · no start date · the record gives no start date	$322.21	3.0¢	High confidence

How this was worked out5 assumptions, 2 that could move the total

Priced against the 2026 calendar. Weekday and weekend day counts differ between years, which moves the total on a time-of-use tariff.No effect on the total
Weekend rates are applied on Saturday and Sunday. URDB publishes no holiday calendar, so utilities that bill public holidays at weekend rates are not reflected.Effect unknown
Hours are local clock hours with no daylight-saving shift, matching how time-of-use periods are written in the tariff.No effect on the total
Monthly totals were spread evenly across every hour. This tariff prices every hour the same way, so the result is unaffected.No effect on the total
No sales or utility tax was applied. Most US jurisdictions add one, so a real bill will be higher.Real bill likely higher

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Estimate — your actual bill may differ.

Tariff data: NREL/OpenEI Utility Rate Database (CC0 1.0), retrieved October 8, 2026.

Indexed so far: 1210 tariffs from 217 utilities. Not every utility. Utilities are reached two ways: by probing population-centre coordinates in 18 states, and by fetching, by EIA number, the utilities that serve most of each state's homes according to EIA-861. A smaller utility outside both — many rural cooperatives and municipal utilities — will not appear here yet.