Municipal · Wisconsin · EIA 13963
Oconomowoc Utilities
Municipal · Wisconsin · 11K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 11 minutes/customer.
Reliability verdict
Oconomowoc Utilities shows above-average chronic reliability in 2023: 0 minutes SAIDI excluding major events (11 minutes including them) across 11K customers.
- 11 min
- SAIDI 2023
- 0.12
- SAIFI 2023
- 0 min
- SAIDI ex-MED
- 11K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: short interruption minutes vs the 911 utility cohort (≤96 min tercile cut).
What short-outage Oconomowoc Utilities filings show
Oconomowoc Utilities is a municipally-owned utility operating in Wisconsin under EIA identifier 13963. It reports service to approximately 11,188 customer accounts and generated about $0.03 billion in annual electric revenue, with a service footprint spanning 1 ZIP code. Being municipally owned, the utility answers to a local board or city council rather than a state commission, and carries a federal income tax exemption.
In 2023, the average Oconomowoc Utilities customer experienced 11.0 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). Excluding major weather events from that total, that is comfortably under the 120–180 minute national benchmark range, a sign of solid grid resilience and quick outage response. The SAIFI figure, which tracks average outage events per customer, came in at 0.12 for the same period, meaning customers statistically saw about 0 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 0.0 minutes, the gap between that figure and the headline 11.0 reveals how much weather, not day-to-day infrastructure, drove outages.
With 4 consecutive years of EIA data (2020–2023), Oconomowoc Utilities's reliability record can be judged on trend rather than one isolated year. SAIDI has increased from 7.3 to 11.0 minutes, which may reflect either worsening weather exposure or delayed grid modernization.
Based on this utility's own EIA Form 861 reliability record -- baseline (major-event- excluded) outage duration, total outage duration, and outage frequency -- each benchmarked against every reporting utility nationwide. Not a measure of electricity rates or customer service, which this portal does not track.
11 minutes per customer per year
Annual minutes without electric service (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Oconomowoc Utilities from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Oconomowoc Utilities SAIDI trend
Oconomowoc Utilities vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
11 Among the lowest fewer outage minutes than 96% of 911 utilities
Utilities nationwide, banded by latest reported SAIDI (minutes)
Each bar is a band; taller bars hold more utilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source U.S. EIA Form 861 reliability filings · August 2026
Price vs. reliability
Where Oconomowoc Utilities sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Oconomowoc Utilities charges more per customer than 38% of them, and is more reliable (lower SAIDI) than 98% of them, placing it in the quadrant where it pays less while still being more reliable, the best-value quadrant. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $2,343/year · Latest SAIDI: 11.0 minutes/year.
SAIDI 2023 breakdown: 11.0 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI |
|---|---|---|---|
| 2020 | 7.3 | - | 0.057 |
| 2021 | 9.3 | 0.0 | 0.159 |
| 2022 | 6.4 | 0.0 | 0.216 |
| 2023 | 11.0 | 0.0 | 0.115 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Oconomowoc Utilities serves 1 ZIP code in Wisconsin.
Frequently Asked Questions
How reliable is Oconomowoc Utilities?
Oconomowoc Utilities had a SAIDI of 11.0 minutes in 2023 including major weather events, but 0.0 minutes excluding them (the IEEE-standard day-to-day reliability measure, the difference points to a major storm that year rather than an ongoing problem). Excluding major storm impacts, this beats the national average, a sign of above-average reliability.
What type of utility is Oconomowoc Utilities?
Oconomowoc Utilities is classified as a Municipal serving Wisconsin.
How many customers does Oconomowoc Utilities serve?
Oconomowoc Utilities serves approximately 11,188 customers in Wisconsin.
How has Oconomowoc Utilities's reliability changed over time?
Oconomowoc Utilities has 4 years of reliability data (2020-2023). SAIDI has remained relatively stable over this period. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- Municipal
- State
- Wisconsin
- Customers
- 11,188
- Annual Revenue
- $0.03B
- EIA ID
- 13963
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Oconomowoc Utilities. Same-state SAIDI neighbors stay in Read-with below; these neighborhoods are nearest other-state utilities with at least 10,000 reported customers.
Similar customer count
Nearest utilities by Form 861 customers (11K here), outside Wisconsin.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (11.0 here), outside Wisconsin, excluding the customer-peer set.
Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer · methodology.