Oconomowoc Utilities electricity rates
Municipal utility · Wisconsin · MISO region · MISO
Oconomowoc Utilities is a city-owned municipal utility, governed locally rather than by the state commission, serving 10,391 homes in Wisconsin. Its residential customers pay an average of 14.62¢/kWh including fixed and delivery charges, 19% less than the U.S. average.
Rate basis: EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend.
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Oconomowoc Utilities bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $73.10 | $70.45 |
| 1,000 kWh | $146.20 | $128.90 |
| 1,500 kWh | $219.30 | $187.35 |
| 2,000 kWh | $292.40 | $245.80 |
*Rg-1 Residential Service Three Phase (effective 2014-01-31, $12.00/month customer charge), energy and fixed charges from the OpenEI Utility Rate Database. Riders, fuel adjustments and taxes are often billed separately, so real bills usually land closer to the all-in column. Calculate your bill.
Oconomowoc Utilities residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Rg-1 Residential Service Three Phase | 2014-01-31 | $12.00 | 11.69¢ |
| Rg-2 Residential Service Optional Time-of-Day Three Phase 7am-7pmtime-of-use | 2014-01-31 | $12.00 | 20.5¢ (7am–7pm) · 5.9¢ (12am–7am, 7pm–12am) — summer weekdays |
| Rg-2 Residential Service Optional Time-of-Day Three Phase 8am-8pmtime-of-use | 2014-01-31 | $12.00 | 20.5¢ (8am–8pm) · 5.9¢ (12am–8am, 8pm–12am) — summer weekdays |
| Rg-2 Residential Service Optional Time-of-Day Single Phase 8am-8pmtime-of-use | 2014-01-31 | $6.00 | 20.5¢ (8am–8pm) · 5.9¢ (12am–8am, 8pm–12am) — summer weekdays |
| Rg-2 Residential Service Optional Time-of-Day Three Phase 9am-9pmtime-of-use | 2014-01-31 | $12.00 | 20.5¢ (9am–9pm) · 5.9¢ (12am–9am, 9pm–12am) — summer weekdays |
| Rg-2 Residential Service Optional Time-of-Day Single Phase 9am-9pmtime-of-use | 2014-01-31 | $6.00 | 20.5¢ (9am–9pm) · 5.9¢ (12am–9am, 9pm–12am) — summer weekdays |
| Rg-2 Residential Service Optional Time-of-Day Single Phase 7am-7pmtime-of-use | 2014-01-31 | $6.00 | 20.5¢ (7am–7pm) · 5.9¢ (12am–7am, 7pm–12am) — summer weekdays |
| Rg-1 Residential Service Single Phase | 2007-09-01 | $6.00 | 11.69¢ |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Oconomowoc Utilities rate history
2015–2025: +14% change in the average residential rate (12.45¢ → 14.17¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | Oconomowoc Utilities | Wisconsin avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 11 | 243 | 266 |
| Outages per customer (SAIFI) | 0.17 | 0.95 | 1.34 |
| Average restoration time (CAIDI) | 63 min | — | — |
| Outage minutes excluding major storms | 0 | 84 | 121 |
Outages in counties served (2025)
From ORNL EAGLE-I, which tracks customers without power every 15 minutes. These counts cover every utility in each county. Weighted across Oconomowoc Utilities's counties, customers averaged 4 hr 12 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Waukesha | 252 | 46 | 14,153 | 2025-08-12 |
Oconomowoc Utilities service area
Oconomowoc Utilities serves Waukesha County in Wisconsin and 1 ZIP codes.
Waukesha
Cities: Oconomowoc, Okauchee Lake
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Customers with daily usage data online | 10,391 |
| Time-based rate programs | Time-of-use rates |
| Homes on time-based rates | 107 |
| Net-metered solar homes | 94 |
Oconomowoc Utilities at a glance
| Ownership | Municipal utility |
| Services | Distribution |
| Commercial rate | 11.93¢/kWh |
| Industrial rate | 9.16¢/kWh |
| Retail revenue (2025) | $27,789,100 |
| Electricity sold (2025) | 226,895 MWh |
| Peak demand | 55 MW summer · 35 MW winter |
| Line losses | 2.6% |
| Balancing authority | MISO |
| EIA utility ID | 13963 |
Other utilities in Wisconsin
Frequently asked questions
What is Oconomowoc Utilities's electricity rate?
Oconomowoc Utilities residential customers pay an average of 14.62¢ per kWh, all charges included (EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend). That's 22% below the Wisconsin average of 18.74¢ and 19% below the U.S. average.
What is the average Oconomowoc Utilities electric bill?
About $100 a month. The average Oconomowoc Utilities home uses 681 kWh a month. At 1,000 kWh the bill would be about $146.
How many customers does Oconomowoc Utilities have?
Oconomowoc Utilities serves 10,391 residential customers and 11,754 customers in total in Wisconsin, across 1 county.
How reliable is Oconomowoc Utilities?
In 2025, the average Oconomowoc Utilities customer was without power for 11 min (SAIDI) over 0.17 interruptions (SAIFI), including major storms. Excluding major event days it was 0 min. The Wisconsin average was 4 hr 3 min and the U.S. average 4 hr 26 min.
Does Oconomowoc Utilities offer time-of-use rates?
Yes. The OpenEI rate database lists 6 time-of-use residential plans, including Rg-2 Residential Service Optional Time-of-Day Three Phase 7am-7pm. Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does Oconomowoc Utilities offer net metering for solar?
Oconomowoc Utilities had 94 residential net-metered customers in 2025 with 0.7 MW of capacity. Estimate solar savings at this utility's rate.
Sources: EIA-861 2025 and EIA-861M (through July 2026), OpenEI URDB, ORNL EAGLE-I, U.S. Census. Methodology. Spot an error? Rates change often, so confirm with Oconomowoc Utilities before making decisions.