Interstate Power and Light Co
3 residential tariffs on file in IA, ranging from $0.1746 to $0.1749 per kWh at 1,000 kWh a month.
The gap between this utility's cheapest and most expensive residential tariff is $3 a year for a household using 1,000 kWh a month. Tariffs are not always open to everyone — some require electric heating, a demand meter or program enrollment — so check eligibility with the utility before switching.
Residential tariffs
| Tariff | Structure | Filed | Fixed/mo | $/kWh @1,000 | Annual |
|---|---|---|---|---|---|
| Electric Residential Service Usage - 400 | Time-of-use | 2025 | $15.50 | $0.1746 | $2,095.38 |
| Electric Residential Service Usage Time of Day - 407 | Time-of-use | 2025 | $15.50 | $0.1749 | $2,098.32 |
| Electric Residential Service Optional Demand - 507 | Time-of-use | 2025 | $15.50 | not priced | — |
Solar and net metering
Interstate Power and Light Co reports 10,120 residential solar installations to the EIA, totalling 82.574 MW. That means exported power is likely to earn something here, though what an exported kWh is worth depends on state rules rather than on the tariff in most cases.
For reference, Interstate Power and Light Co collected an average of $0.1790 per kWh from residential customers in the most recent EIA survey, across all its tariffs and all usage levels. A single tariff priced at 1,000 kWh a month will differ from that blended figure.