EIA Form 861 · 2025
Electric utility reliability rankings
How many minutes, and how many times, the average customer of each large U.S. utility was without power in 2025, as the utilities reported to EIA. Excluding major events, IEEE standard.
In 2025 the average customer of a U.S. utility reporting on the IEEE standard was without power for 125.3 minutes, excluding major events, over 1.08 interruptions. Among the 254 such utilities with 50,000 or more customers, the figure ran from 8.1 minutes at City of Fort Collins to 714.4 at Upshur Rural Elec Coop Corp.
Source: U.S. Energy Information Administration, Form EIA-861 reliability data; U.S. figure customer-weighted by this site · 2025
Fewest outage minutes
Utilities with 50,000 or more customers reporting on the IEEE standard, ranked by outage minutes per customer excluding major event days. The median is 100.2 minutes.
| Utility | State | Customers | Outage minutes | Interruptions | Minutes with major events |
|---|---|---|---|---|---|
| City of Fort Collins | Colorado | 80,930 | 8.1 | 0.13 | 8.1 |
| City of Denton | Texas | 65,183 | 11.5 | 0.12 | 47.6 |
| City of Burbank Water and Power | California | 54,898 | 12.8 | 0.19 | 174.4 |
| Lincoln Electric System | Nebraska | 154,489 | 18.4 | 0.25 | 240.5 |
| Dakota Electric Association | Minnesota | 117,505 | 20.5 | 0.29 | 28.7 |
| Cass County Elec Coop Inc | North Dakota | 60,022 | 23.7 | 0.39 | 299.9 |
| Baldwin County El Member Corp | Alabama | 92,539 | 24.1 | 1.42 | 45.9 |
| Rochester Public Utilities | Minnesota | 58,981 | 24.4 | 0.43 | 33.0 |
| City of Lafayette | Louisiana | 71,166 | 26.9 | 0.64 | 29.7 |
| Madison Gas & Electric Co | Wisconsin | 170,341 | 27.3 | 0.28 | 48.8 |
| Greenville Utilities Comm | North Carolina | 77,455 | 27.6 | 0.37 | 42.5 |
| Wright-Hennepin Coop Elec Assn | Minnesota | 56,939 | 29.3 | 0.44 | 45.0 |
| Mountain View Elec Assn, Inc | Colorado | 67,200 | 29.9 | 0.28 | 130.4 |
| Sawnee Electric Membership Corporation | Georgia | 203,530 | 31.1 | 0.72 | 65.6 |
| Modesto Irrigation District | California | 121,547 | 31.3 | 0.37 | 36.3 |
| City of Anaheim | California | 117,000 | 31.9 | 0.59 | 31.9 |
| Cobb Electric Membership Corp | Georgia | 222,657 | 32.0 | 0.78 | 47.7 |
| Potomac Electric Power Co | District of Columbia | 347,904 | 33.9 | 0.31 | 50.3 |
| Brunswick Electric Member Corp | North Carolina | 118,324 | 35.5 | 0.60 | 40.8 |
| PUD No 1 of Benton County | Washington | 57,780 | 36.1 | 0.28 | 36.1 |
| Gainesville Regional Utilities | Florida | 101,948 | 37.2 | 0.77 | 37.2 |
| Denton County Elec Coop, Inc | Texas | 333,690 | 37.4 | 0.29 | 49.4 |
| Cheyenne Light Fuel & Power | Wyoming | 50,163 | 37.5 | 0.62 | 53.5 |
| Commonwealth Edison Co | Illinois | 4,194,773 | 38.0 | 0.54 | 76.6 |
| Palmetto Electric Coop Inc | South Carolina | 81,346 | 38.0 | 0.69 | 50.6 |
Most outage minutes
| Utility | State | Customers | Outage minutes | Interruptions | Minutes with major events |
|---|---|---|---|---|---|
| Upshur Rural Elec Coop Corp | Texas | 50,881 | 714.4 | 4.74 | 1332.1 |
| Monongahela Power Co | West Virginia | 391,428 | 553.3 | 2.83 | 1250.4 |
| Appalachian Power Co | West Virginia | 417,331 | 546.3 | 2.48 | 1034.5 |
| Amicalola Electric Member Corp | Georgia | 56,981 | 531.1 | 3.44 | 727.9 |
| Washington-St Tammany E C, Inc | Louisiana | 55,871 | 484.4 | 4.79 | 510.9 |
| Southern Pine Electric Cooperative | Mississippi | 70,472 | 446.5 | 4.58 | 649.0 |
| Entergy Mississippi LLC | Mississippi | 464,256 | 410.1 | 2.07 | 640.1 |
| Matanuska Electric Assn Inc | Alaska | 71,871 | 390.3 | 2.61 | 1133.7 |
| Kentucky Power Co | Kentucky | 160,774 | 376.0 | 2.06 | 911.1 |
| Jackson Energy Coop Corp | Kentucky | 53,902 | 334.0 | 2.48 | 915.0 |
| Southwestern Electric Power Co | Louisiana | 191,414 | 332.1 | 2.59 | 450.9 |
| Appalachian Power Co | Virginia | 553,079 | 327.6 | 1.62 | 1115.5 |
| Southside Electric Coop, Inc | Virginia | 59,312 | 323.6 | 2.87 | 2126.9 |
| Great Lakes Energy Coop | Michigan | 133,028 | 315.4 | 2.07 | 4400.7 |
| South Kentucky Rural E C C | Kentucky | 73,125 | 314.4 | 2.28 | 1367.5 |
| Midwest Energy Inc | Kansas | 50,434 | 313.8 | 2.23 | 581.4 |
| Southwestern Electric Power Co | Texas | 192,887 | 311.7 | 2.63 | 467.1 |
| Entergy Texas Inc. | Texas | 539,043 | 304.5 | 2.22 | 403.1 |
| City of Memphis | Tennessee | 430,114 | 283.2 | 1.99 | 348.7 |
| Dixie Electric Membership Corp | Louisiana | 118,505 | 275.0 | 4.28 | 321.1 |
| Pearl River Valley El Pwr Assn | Mississippi | 54,018 | 260.7 | 3.66 | 295.4 |
| Shenandoah Valley Elec Coop | Virginia | 101,226 | 258.0 | 2.34 | 391.0 |
| Blue Grass Energy Coop Corp | Kentucky | 63,305 | 255.4 | 1.61 | 426.0 |
| Entergy Arkansas LLC | Arkansas | 747,309 | 252.3 | 1.63 | 517.9 |
| Arkansas Valley Elec Coop Corp | Arkansas | 58,983 | 249.5 | 2.59 | 321.7 |
Ownership and territory shape these figures. A compact city network often runs largely underground; a rural cooperative runs long overhead lines through trees. Comparing a utility with others like it, and with its own past years, says more than one ranking.
By state
This site’s customer-weighted average of the utilities in each state that report on the IEEE standard. EIA publishes its own state totals; in some states they count fewer utilities, so the figure here covers more customers. Where the two count the same customers, they agree within 1%.
| State | Outage minutes | Interruptions | Customers covered | Utilities |
|---|---|---|---|---|
| United States | 125.3 | 1.08 | 130,930,686 | 741 |
| District of Columbia | 33.9 | 0.31 | 347,904 | 1 |
| Rhode Island | 60.1 | 0.73 | 514,651 | 1 |
| Arizona | 61.3 | 0.83 | 3,384,796 | 11 |
| Illinois | 62.1 | 0.70 | 5,729,062 | 14 |
| South Dakota | 63.8 | 0.76 | 381,659 | 13 |
| Florida | 65.4 | 0.76 | 10,001,968 | 18 |
| Delaware | 74.6 | 0.79 | 474,613 | 3 |
| North Dakota | 75.2 | 0.85 | 412,043 | 10 |
| Massachusetts | 75.5 | 0.74 | 3,050,099 | 13 |
| Connecticut | 77.0 | 0.66 | 1,732,728 | 5 |
| Maryland | 78.9 | 0.73 | 2,702,635 | 7 |
| Iowa | 79.9 | 0.77 | 915,285 | 13 |
| Nebraska | 86.1 | 0.61 | 757,833 | 9 |
| New Hampshire | 86.1 | 0.79 | 683,695 | 3 |
| Wisconsin | 87.4 | 0.67 | 2,414,692 | 25 |
| Minnesota | 93.2 | 0.94 | 2,514,260 | 36 |
| New Jersey | 95.6 | 0.97 | 4,301,741 | 3 |
| Kansas | 96.3 | 0.96 | 1,276,721 | 13 |
| Utah | 97.9 | 0.82 | 1,250,242 | 9 |
| Oregon | 100.2 | 0.70 | 1,850,471 | 11 |
| Nevada | 100.7 | 1.01 | 1,565,800 | 5 |
| South Carolina | 103.4 | 1.06 | 2,905,071 | 23 |
| Wyoming | 111.3 | 0.92 | 261,849 | 7 |
| Missouri | 115.9 | 0.96 | 2,780,993 | 27 |
| Colorado | 117.1 | 1.08 | 2,798,517 | 22 |
| Indiana | 120.8 | 0.98 | 3,108,154 | 29 |
| Oklahoma | 127.2 | 1.30 | 1,022,350 | 20 |
| Alabama | 127.3 | 1.43 | 444,191 | 14 |
| Ohio | 130.1 | 1.08 | 5,601,440 | 30 |
| Montana | 135.4 | 1.18 | 510,555 | 6 |
| Pennsylvania | 136.3 | 1.04 | 5,335,766 | 5 |
| California | 139.6 | 1.07 | 15,173,734 | 23 |
| North Carolina | 142.1 | 1.19 | 5,352,739 | 36 |
| New Mexico | 143.0 | 1.11 | 915,444 | 10 |
| Idaho | 143.6 | 0.97 | 974,392 | 9 |
| Washington | 144.4 | 1.04 | 3,417,659 | 20 |
| New York | 144.8 | 1.13 | 2,045,998 | 4 |
| Georgia | 145.5 | 1.44 | 4,866,140 | 31 |
| Tennessee | 146.9 | 1.46 | 2,588,109 | 40 |
| Texas | 150.0 | 1.52 | 9,670,375 | 50 |
| Vermont | 150.6 | 1.45 | 40,952 | 1 |
| Michigan | 161.0 | 1.04 | 4,826,558 | 20 |
| Kentucky | 171.1 | 1.42 | 2,266,515 | 30 |
| Maine | 191.7 | 1.83 | 864,575 | 3 |
| Hawaii | 202.0 | 2.36 | 35,470 | 1 |
| Arkansas | 211.7 | 1.61 | 1,429,225 | 15 |
| Louisiana | 229.7 | 1.99 | 1,795,076 | 7 |
| Alaska | 242.7 | 2.20 | 286,815 | 5 |
| Virginia | 249.6 | 1.69 | 1,267,008 | 14 |
| Mississippi | 318.6 | 2.00 | 1,076,830 | 12 |
| West Virginia | 498.1 | 2.46 | 1,005,288 | 4 |
Download every ranked utility as CSV, with customers, outage minutes and interruptions with and without major events.
What these figures leave out
- Utilities on another standard. Some utilities report outages to EIA by their own method. Their figures are not comparable and are not ranked.
- Momentary interruptions. SAIDI and SAIFI count sustained outages, usually longer than five minutes. Blinks that reset equipment are not in them.
- Commercial customers alone. The averages cover every customer, homes included.
- Self-reporting. Each utility reports its own figures to EIA.
Common questions
- What is SAIDI?
- The System Average Interruption Duration Index: the total minutes of sustained outage the average customer experienced in a year. SAIFI is how many sustained interruptions the average customer had. Both are defined in IEEE Standard 1366 and reported to EIA by each utility.
- What are major event days?
- Days whose outage total is far outside a utility’s normal range, usually storms, identified by a statistical test in IEEE 1366. Removing them gives a figure that reflects the everyday network. This page ranks on that figure and shows the figure with major events beside it.
- Which state has the most reliable electricity?
- By this site’s customer-weighted average of each state’s IEEE-standard utilities, excluding major events, the District of Columbia had the fewest outage minutes in 2025 (33.9) and West Virginia the most (498.1). Utilities that report on another standard are not in these figures.
- Why does reliability matter to a business?
- An outage stops tills, refrigeration, production and data, and frequent short interruptions can cost more than one long one. A business deciding on backup power, battery storage or a site can set a utility’s record against the state and the U.S.
Reliability is one half of a utility’s record; the price on your bill is the other. A person can read the bill. Nobody calls unless you ask.