How reliable is the power in Wisconsin?
98 minthe average Wisconsin customer was without power in 2024, major events excluded; 297 min with them
Wisconsin ranks 17th of 45 states without major events and 23rd with them (1st = fewest minutes), 32 below the U.S. 129 and 365 below the U.S. 662. Major events added 199 minutes, 67% of the with-events total. The figure covers 2,388,513 customers, 79% of the 3,031,694 EIA lists for Wisconsin.
Wisconsin with and without major events
minutes without power per customer, 2024, Wisconsin and U.S.
- 98Wisconsin, no major events
- 129U.S., no major events
- 297Wisconsin, with major events
- 662U.S., with major events
| Measure | Wisconsin without | Wisconsin with | U.S. without | U.S. with |
|---|---|---|---|---|
| SAIDI, minutes per customer | 98 | 297 | 129 | 662 |
| SAIFI, interruptions per customer | 0.73 | 1.04 | 1.06 | 1.53 |
| CAIDI, minutes per interruption | 134 | 285 | 122 | 433 |
| Median utility, SAIDI minutes | 38 | 88 | — | — |
Which Wisconsin utilities move the number
Wisconsin Electric Power Co serves 51% of the customers in the Wisconsin figure: 51% of lost customer-minutes with major events, 57% without. Without Wisconsin Electric Power Co, the weighted figure would be 298 minutes with major events and 86 without, against 297 and 98.
- Wisconsin Electric Power Co: 1,212,936 customers (51%), 109 min without and 296 with; 51% of lost minutes with major events, 57% without.
- Wisconsin Public Service Corp: 469,161 customers (20%), 95 min without and 465 with; 31% of lost minutes with major events, 19% without.
- Northern States Power Co: 260,234 customers (11%), 122 min without and 209 with; 8% of lost minutes with major events, 14% without.
All Wisconsin utilities in the 2024 file
111 utilities in the 2024 EIA-861 files for Wisconsin: 25 follow IEEE 1366, 12 use another method, 74 filed no reliability figures. 37 are listed.
| City of Kaukauna | Municipal | IEEE 1366 | 16,534 | 7 | 229 | 0.08 | 1.35 | 97 | 1 of 15 | — |
|---|---|---|---|---|---|---|---|---|---|---|
| Superior Water and Light Co | Investor Owned | IEEE 1366 | 14,817 | 7 | 22 | 0.09 | 0.28 | 68 | 2 of 15 | — |
| Manitowoc Public Utilities | Municipal | IEEE 1366 | 18,306 | 8 | 29 | 0.18 | 0.30 | 72 | 3 of 15 | — |
| City of Marshfield - (WI) | Municipal | IEEE 1366 | 13,908 | 20 | 36 | 0.37 | 0.60 | 43 | 4 of 15 | — |
| Sun Prairie Utilities | Municipal | IEEE 1366 | 18,497 | 34 | 34 | 1.01 | 1.01 | 0 | 5 of 15 | — |
| Madison Gas & Electric Co | Investor Owned | IEEE 1366 | 166,686 | 42 | 279 | 0.34 | 0.59 | 85 | 6 of 15 | — |
| Polk-Burnett Electric Coop | Cooperative | IEEE 1366 | 22,144 | 50 | 95 | 0.69 | 0.98 | 48 | 7 of 15 | — |
| Oakdale Electric Coop | Cooperative | IEEE 1366 | 18,055 | 67 | 148 | 0.69 | 1.03 | 55 | 8 of 15 | — |
| Dunn County Electric Coop | Cooperative | IEEE 1366 | 10,601 | 84 | 110 | 0.69 | 0.84 | 23 | 9 of 15 | — |
| Wisconsin Public Service Corp | Investor Owned | IEEE 1366 | 469,161 | 95 | 465 | 0.77 | 1.22 | 80 | 10 of 15 | — |
| Wisconsin Electric Power Co | Investor Owned | IEEE 1366 | 1,212,936 | 109 | 296 | 0.74 | 1.04 | 63 | 11 of 15 | — |
| Northern States Power Co | Investor Owned | IEEE 1366 | 260,234 | 122 | 209 | 0.89 | 1.13 | 41 | 12 of 15 | — |
| Adams-Columbia Electric Coop | Cooperative | IEEE 1366 | 39,641 | 140 | 140 | 1.15 | 1.15 | 0 | 13 of 15 | — |
| Riverland Energy Cooperative | Cooperative | IEEE 1366 | 20,060 | 144 | 262 | 1.38 | 1.76 | 45 | 14 of 15 | — |
| Barron Electric Coop | Cooperative | IEEE 1366 | 19,756 | 145 | 275 | 1.50 | 1.98 | 47 | 15 of 15 | — |
| Wisconsin Power & Light Co | Investor Owned | Other method | 501,445 | 68 | 154 | 0.78 | 0.99 | — | Not ranked | other method, not comparable |
| Wisconsin Rapids W W & L Comm | Municipal | Other method | 14,758 | — | 73 | — | 0.82 | — | Not ranked | other method, not comparable |
| Scenic Rivers Energy Coop | Cooperative | Other method | 14,646 | 156 | 178 | 1.60 | 1.80 | — | Not ranked | other method, not comparable |
| Oconomowoc Utilities | Municipal | Other method | 11,112 | 0 | 6 | 0.00 | 0.06 | — | Not ranked | other method, not comparable |
| City of Sturgeon Bay - (WI) | Municipal | IEEE 1366 | 9,589 | 3 | 28 | 0.08 | 0.30 | 90 | Not ranked | under 10,000 customers |
| City of Menasha - (WI) | Municipal | Other method | 9,413 | 4 | 4 | 0.11 | 0.11 | — | Not ranked | other method, not comparable; under 10,000 customers |
| City of Stoughton - (WI) | Municipal | IEEE 1366 | 9,317 | 37 | 56 | 0.44 | 0.57 | 34 | Not ranked | under 10,000 customers |
| City of Plymouth - (WI) | Municipal | IEEE 1366 | 8,768 | 31 | 31 | 0.30 | 0.30 | 0 | Not ranked | under 10,000 customers |
| Hartford Electric | Municipal | Other method | 7,985 | 0 | 2 | 0.00 | 0.03 | — | Not ranked | other method, not comparable; under 10,000 customers |
| Rock Energy Cooperative | Cooperative | IEEE 1366 | 7,640 | 38 | 88 | 0.38 | 0.55 | 57 | Not ranked | under 10,000 customers |
| Village of Waunakee - (WI) | Municipal | IEEE 1366 | 7,564 | 40 | 40 | 0.28 | 0.28 | 0 | Not ranked | under 10,000 customers |
| Cedarburg Light & Water Comm | Municipal | Other method | 7,023 | 0 | 66 | 0.00 | 0.71 | — | Not ranked | other method, not comparable; under 10,000 customers |
| City of River Falls | Municipal | IEEE 1366 | 6,612 | 13 | 13 | 0.15 | 0.15 | 0 | Not ranked | under 10,000 customers |
| Two Rivers Water & Light | Municipal | IEEE 1366 | 6,198 | 0 | 89 | 0.00 | 0.88 | 100 | Not ranked | under 10,000 customers |
| Shawano Municipal Utilities | Municipal | Other method | 6,000 | — | 34 | — | 0.53 | — | Not ranked | other method, not comparable; under 10,000 customers |
| City of New Richmond | Municipal | IEEE 1366 | 5,479 | 32 | 51 | 0.87 | 1.18 | 37 | Not ranked | under 10,000 customers |
| Waupun Utilities | Municipal | IEEE 1366 | 4,510 | 13 | 13 | 0.13 | 0.13 | 0 | Not ranked | under 10,000 customers |
| Slinger Utilities | Municipal | Other method | 3,044 | 0 | 0 | 0.00 | 0.01 | — | Not ranked | other method, not comparable; under 10,000 customers |
| City of Richland Center - (WI) | Municipal | Other method | 2,940 | — | 4 | — | 0.10 | — | Not ranked | other method, not comparable; under 10,000 customers |
| City of New Holstein - (WI) | Municipal | Other method | 2,734 | 0 | 20 | 0.00 | 0.15 | — | Not ranked | other method, not comparable; under 10,000 customers |
| Florence Utility Comm | Municipal | IEEE 1366 | 1,500 | 42 | 42 | 0.28 | 0.28 | 0 | Not ranked | under 10,000 customers |
| Village of Muscoda - (WI) | Municipal | Other method | 1,098 | 13 | 13 | 0.06 | 0.06 | — | Not ranked | other method, not comparable; under 10,000 customers |
Wisconsin utilities with no reliability figures
74 in the sales file, no SAIDI or SAIFI row; the 25 largest are listed.
| Utility | Type | Customers |
|---|---|---|
| Northwestern Wisconsin Elec Co | Investor Owned | 15,034 |
| Dahlberg Light & Power Co | Investor Owned | 12,258 |
| East Central Energy | Cooperative | 5,570 |
| Reedsburg Utility Comm | Municipal | 5,564 |
| North Central Power Co Inc | Investor Owned | 5,516 |
| Lake Mills Light & Water | Municipal | 4,580 |
| City of Evansville | Municipal | 4,467 |
| Jefferson Utilities | Municipal | 4,333 |
| Village of Mt. Horeb - (WI) | Municipal | 4,286 |
| New London Electric&Water Util | Municipal | 4,142 |
| City of Columbus - (WI) | Municipal | 2,906 |
| City of Black River Falls | Municipal | 2,886 |
| Pioneer Power and Light Co | Investor Owned | 2,278 |
| Village of Prairie Du Sac - (WI) | Municipal | 2,227 |
| Algoma Utility Comm | Municipal | 2,050 |
| Waterloo Light & Water Comm | Municipal | 1,926 |
| Brodhead Water & Lighting Comm | Municipal | 1,857 |
| City of Lodi - (WI) | Municipal | 1,801 |
| City of Boscobel - (WI) | Municipal | 1,782 |
| Oconto Falls Water & Light Comm | Municipal | 1,674 |
| Hustisford Utilities | Municipal | 1,597 |
| City of Eagle River - (WI) | Municipal | 1,587 |
| Village of New Glarus - (WI) | Municipal | 1,296 |
| City of Westby | Municipal | 1,275 |
| Juneau Utility Comm | Municipal | 1,166 |
The biggest Wisconsin utilities against the U.S.
- Wisconsin Electric Power Co (investor owned, 39% of Wisconsin customers in the file): SAIDI without major events 109 min, 20 below the U.S. 129; with major events 296 min against 662.
- Wisconsin Power & Light Co (investor owned, 17% of Wisconsin customers in the file): reports on another method, SAIFI 0.99, not compared with the U.S. figure.
- Wisconsin Public Service Corp (investor owned, 15% of Wisconsin customers in the file): SAIDI without major events 95 min, 34 below the U.S. 129; with major events 465 min against 662.
- Northern States Power Co (investor owned, 9% of Wisconsin customers in the file): SAIDI without major events 122 min, 7 below the U.S. 129; with major events 209 min against 662.
- Madison Gas & Electric Co (investor owned, 6% of Wisconsin customers in the file): SAIDI without major events 42 min, 88 below the U.S. 129; with major events 279 min against 662.
Wisconsin by type of utility
Among Wisconsin utilities that report under IEEE 1366, municipal utilities average 20 minutes without major events and cooperative utilities 107.
| Type | Utilities | Customers | SAIDI without | Median utility | SAIDI with |
|---|---|---|---|---|---|
| Investor Owned | 5 | 2,123,834 | 102 | 95 | 319 |
| Cooperative | 7 | 137,897 | 107 | 84 | 166 |
| Municipal | 13 | 126,782 | 20 | 20 | 62 |
Next to Wisconsin in the ranking
Wisconsin report card
Smart meters: 94% of residential meters, 21 utilities (U.S. 92%). Wisconsin time-based rates: 15 of 19 utilities, 1.6% of residential customers enrolled (U.S. 10.6%). Wisconsin efficiency spend: $31.2 per customer (U.S. $124.2). Demand response: 39 W per customer (U.S. 77). Wisconsin net-metered systems: 7.1 per 1,000 customers. Rankings.
Is your Wisconsin utility better or worse than the Wisconsin median?
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More
- Wisconsin against all states
- Wisconsin utilities among the best and worst
- Wisconsin utility reliability and price by company
- Wisconsin major outage reports from the Department of Energy
- Wisconsin electricity prices
- Wisconsin help with your bill
37 Wisconsin filings in EIA-861 2024 (retrieved 2026-10-01), 15 ranked utilities. Method and sources.
Questions
How many minutes without power did the average Wisconsin customer have in 2024?
98 minutes without major events and 297 with them (25 IEEE 1366 utilities, customer-weighted).
Why do the two Wisconsin numbers differ so much?
Major events add 199 of the 297 minutes (67%); Wisconsin Electric Power Co supplies 51% of the with-events total.
Which Wisconsin utility reported the fewest and the most minutes?
Among 15 utilities with 10,000+ customers: City of Kaukauna 7 minutes without major events, and Barron Electric Coop 145.
Which Wisconsin utilities use which method?
25 follow IEEE 1366, 12 use another method, 74 filed no reliability figures.