States › Wisconsin › Oconomowoc Utilities
municipal utility · EIA utility 13963
Oconomowoc Utilities
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Annual figures: Form EIA-861 for 2024, final release. Monthly state figures run to July 2026.
Oconomowoc Utilities is a municipal utility that reported 9,972 residential customers in Wisconsin on Form EIA-861 for 2024, with a service territory that touches 1 county.
Its average residential price that year was 13.75¢ per kilowatthour, 20% below the Wisconsin average of 17.18¢ and 17% below the US average of 16.48¢. The figure is residential revenue divided by residential sales, so it folds in fixed charges, riders and every rate schedule the utility bills under.
That works out to an average residential bill of $91.97 a month on average use of 669 kWh a month. Across Wisconsin the average bill was $110.87 on 645 kWh, so a bill gap reflects how much power households use as well as what each kilowatthour costs.
For reliability it reported a SAIDI of 6.0 minutes per customer with major event days included and 0.0 minutes with them excluded, calculated under another method. The median among Wisconsin utilities reporting was 51.0 minutes with major event days; this utility's figure is 88% below that median.
The average price is up 13.5% on 2019, against up 21.2% for Wisconsin as a whole, and up 1.6% on 2023. EIA's early release for 2025, which has not been fully edited, shows 14.17¢.
Compared with Wisconsin, the US and other municipal utilities
| Measure, 2024 | This utility | Municipal utilities, US median | Wisconsin | United States |
|---|---|---|---|---|
| Average residential price per kWh | 13.75¢ | 12.45¢ | 17.18¢ | 16.48¢ |
| Average monthly residential bill | $91.97 | $113.02 | $110.87 | $142.26 |
| Average monthly use, kWh | 669 | 905 | 645 | 863 |
| Residential price change, 1 year | +1.6% | — | +1.8% | +3.0% |
| Residential price change, 5 years | +13.5% | — | +21.2% | +26.7% |
| SAIDI, all events (minutes) | 6.0 | 64.4 | 51.0 median | 184.5 median |
| SAIDI, without major event days | 0.0 | 40.3 | 32.8 median | 99.8 median |
State and US prices, bills and use are EIA's own averages over every customer. The ownership column and the reliability columns are medians across utilities with at least 1,000 residential customers, computed on this site from the final 2024 file. Among the 45 filings by municipal utilities in Wisconsin, the median price was 12.42¢. In Wisconsin this utility's price ranks 27 of 65, counting from the highest.
Average price by year
Oconomowoc UtilitiesWisconsin averageUS average
Year by year
| Year | ¢ per kWh | Wisconsin ¢ | Monthly bill | kWh a month | Residential customers | All sales |
|---|---|---|---|---|---|---|
| 2025 early release | 14.17¢ | 18.16¢ | $96.48 | 681 | 10,391 | 226.9 GWh |
| 2024 | 13.75¢ | 17.18¢ | $91.97 | 669 | 9,972 | 220.2 GWh |
| 2023 | 13.53¢ | 16.88¢ | $91.47 | 676 | 9,796 | 221.4 GWh |
| 2022 | 13.55¢ | 15.62¢ | $96.05 | 709 | 9,335 | 226 GWh |
| 2021 | 12.53¢ | 14.52¢ | $92.14 | 735 | 9,051 | 230.2 GWh |
| 2020 | 12.14¢ | 14.32¢ | $89.59 | 738 | 8,907 | 223.8 GWh |
| 2019 | 12.11¢ | 14.18¢ | $85.75 | 708 | 8,775 | 222.5 GWh |
| 2018 | 11.95¢ | 14.02¢ | $88.70 | 742 | 8,577 | 226.9 GWh |
| 2017 | 12.46¢ | 14.35¢ | $87.87 | 705 | 8,435 | 218.6 GWh |
| 2016 | 12.27¢ | 14.07¢ | $91.75 | 747 | 8,256 | 229.8 GWh |
| 2015 | 12.45¢ | 14.11¢ | $89.45 | 719 | 8,199 | 230.3 GWh |
| 2014 | 12.28¢ | 13.67¢ | $91.55 | 746 | 8,059 | 230.8 GWh |
| 2013 | 11.51¢ | 13.55¢ | $86.04 | 748 | 8,040 | 231.1 GWh |
Bundled residential service only in the price, bill and use columns. Bill = residential revenue ÷ customers ÷ 12; use = residential sales ÷ customers ÷ 12. EIA describes its early release as not fully edited; it is shown for this utility alone and enters no average, median or rank on this site.
Sales by sector, 2024
| Sector | Customers | Sales | Share of sales | Revenue | ¢ per kWh, bundled |
|---|---|---|---|---|---|
| Residential | 9,972 | 80 GWh | 36% | $11,006,000 | 13.75¢ |
| Commercial | 1,400 | 113.3 GWh | 51% | $12,484,800 | 11.02¢ |
| Industrial | 4 | 26.9 GWh | 12% | $2,380,800 | 8.85¢ |
Customers, sales and revenue count every service type the utility reported (bundled, energy-only and delivery-only). The price column uses bundled service alone, because part-bill revenue would understate it. Sources of energy: 226.3 GWh in total, of which 0% was its own net generation and 226.3 GWh was bought wholesale; summer peak demand 55 MW.
Reliability
Minutes of sustained interruption per customer in 2024, as the utility reported them under another method. SAIFI: 0.06 interruptions per customer with major event days, 0.00 without; CAIDI 94.6 minutes per interruption. EIA's Wisconsin total across all reporting utilities was 266.1 minutes with major event days and 91.3 without. Major event days are storms and similar events that a utility's chosen method sets apart; methods differ, so treat comparisons as approximate. What SAIDI and SAIFI mean.
| Year | SAIDI, all events | SAIDI, no major events | SAIFI, all events | SAIFI, no major events | Method |
|---|---|---|---|---|---|
| 2025 early release | 11.0 | 0.0 | 0.18 | 0.00 | Other |
| 2024 | 6.0 | 0.0 | 0.06 | 0.00 | Other |
| 2023 | 11.0 | 0.0 | 0.12 | 0.00 | Other |
| 2022 | 6.4 | 0.0 | 0.22 | 0.00 | Other |
| 2021 | 9.3 | 0.0 | 0.16 | 0.00 | Other |
| 2020 | 7.3 | — | 0.06 | — | Other |
| 2019 | 8.9 | — | 0.11 | — | Other |
| 2018 | 3.9 | — | 0.04 | — | Other |
| 2017 | 2.4 | — | 0.07 | — | Other |
| 2016 | 5.0 | — | 0.08 | — | Other |
| 2015 | 6.7 | — | 0.06 | — | Other |
| 2014 | 10.5 | — | 0.16 | — | Other |
| 2013 | 16.6 | — | 0.23 | — | Other |
Counties in its service territory
Counties the utility listed on Form EIA-861 for 2024. Listing a county does not mean the utility serves all of it.
Other utilities in Wisconsin
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| City of Menasha | Municipal | 8,607 | 12.42¢ | $73.52 | 4.1 | 4.1 |
| City of Stoughton | Municipal | 8,391 | 12.60¢ | $79.76 | 56.3 | 37.1 |
| City of Marshfield | Municipal | 11,928 | 10.07¢ | $67.91 | 35.7 | 20.4 |
| Wisconsin Rapids W W & L Comm | Municipal | 12,395 | 13.37¢ | $84.73 | 73.0 | — |
| City of Sturgeon Bay | Municipal | 7,786 | 12.47¢ | $71.43 | 27.7 | 2.7 |
| City of Plymouth | Municipal | 7,358 | 11.80¢ | $82.38 | 31.0 | 31.0 |
| Hartford Electric | Municipal | 6,998 | 11.71¢ | $72.31 | 2.3 | 0.0 |
| City of Kaukauna | Municipal | 14,543 | 12.53¢ | $89.14 | 229.5 | 6.6 |
All Wisconsin utilities · Municipal utilities nationwide
Questions and answers
How much does electricity cost from Oconomowoc Utilities?
Residential customers paid an average of 13.75¢ per kilowatthour in 2024. EIA derives this by dividing residential revenue by residential sales; it is an average across all rate schedules and charges, not a tariff rate.
How does that compare with Wisconsin?
The Wisconsin average residential price in 2024 was 17.18¢ and the US average 16.48¢; Oconomowoc Utilities was 20% below the state figure. Among 65 utility filings with a bundled residential price in Wisconsin, it had the 27th highest.
What is the average Oconomowoc Utilities bill?
$91.97 a month in 2024, on average residential use of 669 kWh a month (annual revenue and sales divided by customers and by twelve). The Wisconsin average was $110.87 on 645 kWh.
How reliable is Oconomowoc Utilities service?
It reported 6.0 minutes of interruption per customer (SAIDI) including major event days and 0.0 minutes excluding them, with 0.06 interruptions per customer (SAIFI) in 2024. Utilities calculate these under differing methods, so comparisons are approximate.
Is the Oconomowoc Utilities price rising?
The average residential price was up 1.6% in 2024 compared with 2023 and up 13.5% compared with 2019. EIA's early, not fully edited release for 2025 shows 14.17¢.
Which counties does Oconomowoc Utilities serve?
Its Form EIA-861 service territory lists 1 county: Waukesha County, WI. A county can appear in several utilities' territories.
Provenance
Source: U.S. Energy Information Administration. Annual figures are from Form EIA-861 (sales to ultimate customers, reliability, operational data and service territory files), final release for 2024, respondent "Oconomowoc Utilities", utility number 13963; the 2025 row is from EIA's early release. State and US averages are from the Form EIA-861M sales and revenue workbook, published through July 2026. All are US government works in the public domain. Page built 30 Sep 2026. Errors in processing are corrected at the next build; see corrections. For tariffs and rate schedules, consult the utility or the state utility commission.