DS-1 Residential Zone 3
Ameren Illinois Company · Time-of-use + tiered · filed 2026
What this tariff charges
| Fixed charge | $14.01 per month |
|---|---|
| Structure | Time-of-use + tiered |
| Filed | 2026-03-01 |
Energy rates
The charged price is the base rate plus its adjustment. Adjustments carry fuel and rider costs and are frequently most of the bill, so a comparison built on the base rate alone is meaningless.
Period 0
| Tier | Up to | Base | Adjustment | Charged $/kWh |
|---|---|---|---|---|
| 1 | 800.0 kWh | 0.04572 | 0.12772 | 0.17344 |
| 2 | no limit | 0.02427 | 0.12772 | 0.15199 |
Period 1
| Tier | Up to | Base | Adjustment | Charged $/kWh |
|---|---|---|---|---|
| 1 | no limit | 0.07811 | 0.12772 | 0.20583 |
What it costs at different usage levels
| kWh per month | Annual total | Effective $/kWh |
|---|---|---|
| 500 | $1,273.53 | $0.2122 |
| 1000 | $2,344.61 | $0.1954 |
| 2000 | $4,383.82 | $0.1827 |
Effective rate includes the fixed charge, which is why it falls as usage rises. This is a time-of-use tariff, so the result also depends on when power is used; an average residential pattern is assumed. Details →
Rooftop solar on this tariff
A 7 kW system costing $21,000 before incentives would save between $904 and $1,657 a year on this tariff, paying back in 13–23 years . No federal tax credit is included: Section 25D ended on December 31, 2025.
no sell rate filed, but this utility reports residential net metering - the range spans no export credit to full retail netting. Compare across this state →
The utility's own description
Delivery Voltage Services for secondary rate Zone 3
URDB rate id 69cbdc3611bf8df0c7097e6a · utility source document · all Ameren Illinois Company tariffs