Full service
17.77¢
per kWh, 2025 average revenue
$131.38 / month at 739 kWh
Price −0.7% from 2024
Investor Owned · 419,451 residential customers · Iowa
Why is my Interstate Power and Light electric bill so high?
EIA respondent: Interstate Power and Light Co. Reviewed October 14, 2026.
In 2025, Interstate Power and Light reported 419,451 residential full service customers under the EIA name Interstate Power and Light Co. Average revenue was 17.77¢ per kWh. The average monthly bill in that filing was $131.38 for 739 kWh.
17.77¢ is above Iowa's 2025 statewide residential average of 13.62¢. In July 2026 the state residential price was 15.99¢, versus 15.31¢ a year earlier (+4.4%). The utility number is a 2025 annual average. The state number is one later month. They answer different questions.
From 2024 to 2025, the average monthly bill for full service changed +2.8%. Average use changed +3.6% and average price changed −0.7%. Holding the 2024 price fixed, the usage change accounts for $4.58 a month. The price change, applied to 2025 usage, accounts for −$0.98.
EIA Form 861, 2025 final · Reviewed October 14, 2026
EIA Electric Power Monthly, Table 5.6.A · Reviewed October 14, 2026
The rate on the record
Investor-owned base rates are usually set in a state docket. Riders can change outside a full rate case. Average revenue per kilowatt-hour is total residential revenue divided by residential sales. It is not a tariff schedule.
| Service | Customers | Price | Monthly use | Monthly bill | Vs 2024 price |
|---|---|---|---|---|---|
| Full service | 419,451 | 17.77¢ | 739 kWh | $131.38 | −0.7% |
EIA-861 sales to ultimate customers, 2025 final, compared with 2024 · Reviewed October 14, 2026
Audit the full service average
Revenue 661,272 thousand dollars. Sales 3,721,680 MWh. Customers 419,451. Cents per kWh = revenue ÷ megawatt-hours × 100. Monthly bill = revenue × 1,000 ÷ customers ÷ 12.
Why a Interstate Power and Light bill moved
Usage and price pulled in opposite directions
From 2024 to 2025 the average full service bill at Interstate Power and Light moved +2.8%, from $127.80 to $131.38. Holding the 2024 price fixed, the usage change of +3.6% is worth $4.58 a month. The price change of −0.7%, from 17.90¢ to 17.77¢, is worth −$0.98 on 2025 usage.
Above the Iowa average
17.77¢ per kWh is above Iowa's 2025 residential average of 13.62¢. July 2026 in the state was 15.99¢, versus 15.31¢ a year earlier (+4.4%). The utility figure is a full year of average revenue. The state figure is one later month. A household that uses more than 739 kWh will not land on $131.38.
One full-service average
419,451 residential customers were on Interstate Power and Light full service in 2025, at 17.77¢ per kWh. That average folds in the customer charge and whatever riders the utility booked as residential revenue. It is not the last block on a tiered tariff.
Season
The 2025 monthly average for this Interstate Power and Light service was 739 kWh, and the Iowa residential average was 861 kWh. A single month can sit far from either figure. Compare kilowatt-hours with the same month last year before you treat the whole increase as a rate hike.
Time-of-use is already on the EIA schedule
EIA's 2025 dynamic-pricing file shows residential time-of-use activity at Interstate Power and Light, with 17,154 residential customers enrolled in dynamic pricing. The expensive window is in the tariff, not in that enrollment count. Shifting a dishwasher or an EV charger only helps if you are actually on that schedule.
EIA-861 2025 and 2024 residential sales · Reviewed October 14, 2026
Rate cases and hikes
Needs verification No rate case for Interstate Power and Light has been reviewed for this page. Orders and pending dockets are public at Iowa Utilities Commission. Iowa's utility regulator was formerly the Iowa Utilities Board. Confirm the live docket site if this link has moved. Needs verification.
Iowa Utilities Commission · Reviewed October 14, 2026
Assistance
LIHEAP is the federal bill program, and the state contact list is the place to start. A Interstate Power and Light income discount, medical baseline, or budget-billing rule was not retrieved from Iowa Utilities Commission. That offer needs verification.
LIHEAP · Reviewed October 14, 2026
How to lower the bill
- Read the kilowatt-hours against this filing's average of 739 kWh a month. If your use is the thing that moved, the dollar total can rise on an unchanged rate.
- On the statement, separate the base energy charge from fuel or rider lines. A rider can move the total in a month when no new base-rate order exists.
- Match this month's weather to last year's same month. A mild comparison month makes an ordinary bill look like a hike.
- Start with LIHEAP for Iowa (https://www.acf.hhs.gov/ocs/map/liheap-map-state-and-territory-contact-listing). A Interstate Power and Light discount beyond that program needs verification.
- 17,154 residential customers were already on a dynamic price in the 2025 EIA file. If you are one of them, the window on the tariff is the lever. If you are not, calling the utility to discuss the schedule is the first step, not shifting load you are not being charged extra for.
- If the read is marked estimated, the next actual read can true the account up or down. The tariff rule for that true-up needs verification.
Full service at the 2025 average price
| Monthly use | Estimated bill |
|---|---|
| 500 kWh | $88.85 |
| 750 kWh | $133.28 |
| 1,000 kWh | $177.70 |
| 1,500 kWh | $266.55 |
| 2,000 kWh | $355.40 |
Usage times the average price. At very low use, a real bill is often higher because a fixed customer charge does not shrink. The tariff needs verification.
Questions people ask
Why is my Interstate Power and Light electric bill so high?
In 2025, Interstate Power and Light reported 419,451 residential full service customers under the EIA name Interstate Power and Light Co. Average revenue was 17.77¢ per kWh. The average monthly bill in that filing was $131.38 for 739 kWh. 17.77¢ is above Iowa's 2025 statewide residential average of 13.62¢. In July 2026 the state residential price was 15.99¢, versus 15.31¢ a year earlier (+4.4%). The utility number is a 2025 annual average. The state number is one later month. They answer different questions. From 2024 to 2025, the average monthly bill for full service changed +2.8%. Average use changed +3.6% and average price changed −0.7%. Holding the 2024 price fixed, the usage change accounts for $4.58 a month. The price change, applied to 2025 usage, accounts for −$0.98.
What was Interstate Power and Light's average residential rate?
Using 2025 EIA-861 revenue and sales, the full service average was 17.77¢ per kWh. Average use was 739 kWh a month and the average bill was $131.38. This folds in whatever customer charges and riders the utility reported. It is not the marginal rate on your tariff.
Did Interstate Power and Light raise rates?
The full service average price changed −0.7% from 2024 to 2025, from 17.90¢ to 17.77¢. That is average revenue per kilowatt-hour, not a commission order. No 2025–2026 order for this utility was retrieved for this page. A separate rider can still move a single month.
What bill assistance can Interstate Power and Light customers ask about?
LIHEAP is the federal program for home energy bills (https://www.acf.hhs.gov/ocs/programs/liheap). Interstate Power and Light may also offer an income-qualified discount, budget billing, or a medical baseline. The current offer, income cutoff, and how to apply need verification with the state LIHEAP office and Iowa Utilities Commission.
Are data centers why this bill went up?
Large computing load is raising U.S. electricity demand, and regulators can later recover new generation and wires costs from customers. EIA has not published a dollar line that isolates data centers on this utility's residential bill. That pass-through needs verification.