Electric Power Annual
With Data for 2025
Release Date:
October 21, 2026
Next Release:
October 2027
| Table 11.3 Reliability Metrics Using Any Method of U.S. Distribution System by State, 2025 and 2024 |
| All Events (With Major Events) | Without Major Events | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Percent of Customers Reported | SAIDI (minutes per year) |
SAIFI (times per year) |
CAIDI (minutes per interruption) |
SAIDI (minutes per year) |
SAIFI (times per year) |
CAIDI (minutes per interruption) |
||||||||
| Census Division and State |
Year 2025 | Year 2024 | Year 2025 | Year 2024 | Year 2025 | Year 2024 | Year 2025 | Year 2024 | Year 2025 | Year 2024 | Year 2025 | Year 2024 | Year 2025 | Year 2024 |
| New England | 96.5% | 96.0% | 186.5 | 419.6 | 1.164 | 1.382 | 160.2 | 303.6 | 99.3 | 112.3 | 0.914 | 0.951 | 108.6 | 118 |
| Connecticut | 100.9% | 101.2% | 183.9 | 153.6 | 0.928 | 0.876 | 198.2 | 175.5 | 76.7 | 73.1 | 0.653 | 0.644 | 117.4 | 113.4 |
| Maine | 100.2% | 100.3% | 363.4 | 1748.6 | 2.24 | 3.636 | 162.2 | 480.9 | 191.7 | 274 | 1.834 | 2.139 | 104.5 | 128.1 |
| Massachusetts | 93.3% | 92.3% | 121 | 102 | 0.906 | 0.843 | 133.6 | 120.9 | 75.3 | 76.1 | 0.744 | 0.743 | 101.2 | 102.3 |
| New Hampshire | 99.3% | 99.2% | 231.3 | 922.7 | 1.447 | 2.021 | 159.9 | 456.6 | 135.1 | 132.3 | 1.019 | 0.985 | 132.5 | 134.3 |
| Rhode Island | 96.9% | 97.6% | 183 | 104.3 | 0.96 | 0.896 | 190.6 | 116.4 | 60.1 | 60.8 | 0.73 | 0.761 | 82.3 | 79.9 |
| Vermont | 89.8% | 87.0% | 262.9 | 696.7 | 1.697 | 2.516 | 154.9 | 276.9 | 184.6 | 275 | 1.563 | 1.661 | 118.1 | 165.5 |
| Middle Atlantic | 98.1% | 97.6% | 235.6 | 246.2 | 1.064 | 1.099 | 221.4 | 224 | 97.5 | 97.2 | 0.835 | 0.804 | 116.7 | 120.9 |
| New Jersey | 100.9% | 100.9% | 154.9 | 174.2 | 1.123 | 1.119 | 137.9 | 155.7 | 95.8 | 99.7 | 0.971 | 0.948 | 98.7 | 105.2 |
| New York | 99.3% | 98.2% | 122 | 219.9 | 0.796 | 0.91 | 153.3 | 241.7 | 73.8 | 72 | 0.638 | 0.611 | 115.6 | 117.8 |
| Pennsylvania | 94.5% | 94.5% | 458.1 | 336.1 | 1.408 | 1.353 | 325.4 | 248.3 | 132.8 | 131 | 1.018 | 0.971 | 130.4 | 134.9 |
| East North Central | 95.9% | 95.9% | 319.2 | 349.2 | 1.175 | 1.155 | 271.7 | 302.2 | 112.2 | 112.8 | 0.907 | 0.868 | 123.7 | 130 |
| Illinois | 97.0% | 98.1% | 144.5 | 156.9 | 0.871 | 0.852 | 165.9 | 184 | 62.1 | 59.4 | 0.704 | 0.644 | 88.2 | 92.3 |
| Indiana | 93.0% | 92.0% | 374 | 312.4 | 1.39 | 1.283 | 269.1 | 243.5 | 123.2 | 121.4 | 0.984 | 0.997 | 125.2 | 121.8 |
| Michigan | 97.6% | 97.5% | 671.5 | 470.4 | 1.424 | 1.356 | 471.6 | 346.8 | 160.3 | 160.1 | 1.036 | 0.986 | 154.8 | 162.4 |
| Ohio | 96.8% | 96.6% | 205.4 | 510.5 | 1.275 | 1.298 | 161.1 | 393.4 | 130 | 133.2 | 1.082 | 0.999 | 120.2 | 133.4 |
| Wisconsin | 92.4% | 92.3% | 230 | 266.1 | 0.94 | 1.02 | 244.7 | 260.8 | 84.2 | 91.3 | 0.677 | 0.729 | 124.4 | 125.2 |
| West North Central | 84.9% | 84.8% | 295.3 | 246.9 | 1.244 | 1.217 | 237.3 | 202.9 | 98.2 | 94.3 | 0.881 | 0.883 | 111.5 | 106.8 |
| Iowa | 85.5% | 85.4% | 151.8 | 166.7 | 1.032 | 1.15 | 147 | 145 | 78.4 | 89.8 | 0.775 | 0.887 | 101.2 | 101.3 |
| Kansas | 82.4% | 82.4% | 196.1 | 285.6 | 1.319 | 1.506 | 148.7 | 189.7 | 96.9 | 103.6 | 0.959 | 1.003 | 101 | 103.3 |
| Minnesota | 89.1% | 89.0% | 182.4 | 219.6 | 1.175 | 1.25 | 155.2 | 175.6 | 93.7 | 92.2 | 0.945 | 0.901 | 99.1 | 102.3 |
| Missouri | 86.6% | 86.7% | 457.2 | 224.3 | 1.365 | 1.189 | 335.1 | 188.6 | 116.3 | 106 | 0.947 | 0.919 | 122.9 | 115.3 |
| Nebraska | 74.1% | 73.7% | 547.3 | 641.7 | 1.319 | 1.232 | 414.9 | 520.8 | 116.3 | 73.6 | 0.604 | 0.595 | 192.4 | 123.8 |
| North Dakota | 89.1% | 88.5% | 203.5 | 99.1 | 1.142 | 0.915 | 178.2 | 108.4 | 72.8 | 84.2 | 0.818 | 0.857 | 89 | 98.3 |
| South Dakota | 76.5% | 75.4% | 268.5 | 84.7 | 1.335 | 0.815 | 201.2 | 104 | 61.4 | 62.1 | 0.757 | 0.72 | 81.1 | 86.2 |
| South Atlantic | 96.9% | 96.6% | 206.9 | 1247.3 | 1.319 | 1.785 | 156.9 | 698.7 | 119.3 | 129.3 | 1.09 | 1.042 | 109.5 | 124 |
| Delaware | 88.9% | 89.1% | 102.5 | 116.1 | 0.929 | 0.843 | 110.2 | 137.8 | 73.7 | 65.9 | 0.779 | 0.717 | 94.6 | 91.9 |
| District of Columbia | 98.7% | 98.9% | 50.3 | 32.6 | 0.324 | 0.271 | 155.2 | 120.2 | 33.9 | 26.4 | 0.309 | 0.246 | 109.9 | 107.2 |
| Florida | 100.0% | 100.4% | 70.5 | 1321.5 | 0.858 | 1.77 | 82.2 | 746.6 | 63.4 | 66.4 | 0.777 | 0.762 | 81.6 | 87.1 |
| Georgia | 90.0% | 88.9% | 269.3 | 1229.1 | 1.854 | 2.122 | 145.2 | 579.2 | 147 | 212.3 | 1.453 | 1.264 | 101.2 | 168 |
| Maryland | 98.5% | 98.6% | 178.3 | 118.1 | 0.956 | 0.817 | 186.5 | 144.5 | 78.9 | 75.1 | 0.733 | 0.686 | 107.6 | 109.6 |
| North Carolina | 95.6% | 96.0% | 191.7 | 1441 | 1.375 | 1.812 | 139.4 | 795 | 140.7 | 141.4 | 1.196 | 1.172 | 117.6 | 120.6 |
| South Carolina | 98.7% | 96.5% | 151.1 | 3136.5 | 1.251 | 2.365 | 120.7 | 1326.3 | 103.6 | 117.8 | 1.063 | 1.207 | 97.4 | 97.6 |
| Virginia | 97.0% | 96.4% | 445.7 | 418.3 | 1.951 | 1.627 | 228.5 | 257.1 | 177 | 166.4 | 1.44 | 1.342 | 123 | 124 |
| West Virginia | 97.6% | 97.3% | 1013.2 | 1165.5 | 3.082 | 2.832 | 328.8 | 411.5 | 498.1 | 486.1 | 2.463 | 2.287 | 202.2 | 212.6 |
| East South Central | 79.8% | 86.5% | 353.2 | 415.7 | 1.938 | 2.03 | 182.2 | 204.7 | 170.4 | 162.8 | 1.443 | 1.493 | 118.1 | 109.1 |
| Alabama | 72.7% | 80.7% | 371.6 | 279.4 | 2.011 | 1.87 | 184.7 | 149.4 | 114.6 | 117.8 | 0.986 | 1.037 | 116.3 | 113.6 |
| Kentucky | 96.6% | 96.5% | 408.2 | 648.3 | 1.917 | 1.955 | 212.9 | 331.7 | 173.1 | 153.3 | 1.442 | 1.32 | 120.1 | 116.1 |
| Mississippi | 77.6% | 83.2% | 501.2 | 567.1 | 2.594 | 2.555 | 193.2 | 221.9 | 305.5 | 266.3 | 2.032 | 1.963 | 150.4 | 135.6 |
| Tennessee | 75.3% | 85.9% | 229 | 278.6 | 1.643 | 2 | 139.3 | 139.3 | 150.6 | 159.5 | 1.539 | 1.764 | 97.9 | 90.4 |
| West South Central | 96.8% | 96.1% | 253.1 | 1050.4 | 1.82 | 2.148 | 139 | 489 | 146.4 | 142.3 | 1.394 | 1.302 | 105 | 109.3 |
| Arkansas | 89.4% | 89.2% | 464.8 | 509.1 | 2.131 | 2.128 | 218.1 | 239.3 | 206.2 | 194.6 | 1.581 | 1.587 | 130.5 | 122.7 |
| Louisiana | 93.6% | 93.5% | 269.5 | 727.5 | 2.324 | 2.722 | 116 | 267.2 | 218.9 | 206 | 2.02 | 1.751 | 108.3 | 117.6 |
| Oklahoma | 89.8% | 90.6% | 285.5 | 270.9 | 1.816 | 1.731 | 157.2 | 156.5 | 144.8 | 119.6 | 1.277 | 1.147 | 113.4 | 104.3 |
| Texas | 99.2% | 98.1% | 223.5 | 1270.6 | 1.704 | 2.114 | 131.2 | 600.9 | 128.7 | 129.4 | 1.287 | 1.218 | 100 | 106.2 |
| Mountain | 93.3% | 93.3% | 171.6 | 181.3 | 1.105 | 1.192 | 155.3 | 152.1 | 103 | 105.8 | 0.972 | 0.979 | 106 | 108.1 |
| Arizona | 96.3% | 96.6% | 69.9 | 87.5 | 0.892 | 0.988 | 78.3 | 88.6 | 62.6 | 72 | 0.836 | 0.898 | 74.8 | 80.1 |
| Colorado | 94.0% | 93.7% | 269.9 | 255.1 | 1.281 | 1.409 | 210.6 | 181 | 116.7 | 119 | 1.082 | 1.142 | 107.8 | 104.3 |
| Idaho | 95.2% | 95.1% | 306.2 | 232.8 | 1.158 | 1.314 | 264.3 | 177.1 | 149 | 174 | 0.974 | 1.136 | 152.9 | 153.2 |
| Montana | 73.4% | 74.7% | 288.1 | 351.5 | 1.358 | 1.621 | 212.2 | 216.9 | 137.2 | 156.6 | 1.196 | 1.161 | 114.8 | 134.9 |
| Nevada | 103.1% | 103.1% | 127.8 | 158.9 | 1.125 | 1.108 | 113.6 | 143.4 | 100.7 | 63.8 | 1.007 | 0.658 | 100 | 97 |
| New Mexico | 90.8% | 90.1% | 172 | 278.8 | 1.294 | 1.321 | 133 | 211.1 | 149.3 | 156.5 | 1.154 | 1.109 | 129.3 | 141.1 |
| Utah | 89.1% | 88.3% | 117.5 | 119.8 | 0.883 | 1.03 | 133 | 116.3 | 99.1 | 106.7 | 0.835 | 0.966 | 118.8 | 110.4 |
| Wyoming | 76.4% | 76.0% | 224.2 | 137.8 | 1.514 | 0.999 | 148 | 138 | 104.7 | 109.1 | 0.867 | 0.869 | 120.7 | 125.6 |
| Pacific Contiguous | 97.3% | 98.5% | 344.9 | 365.4 | 1.29 | 1.413 | 267.5 | 258.7 | 133.6 | 155.8 | 1.018 | 1.117 | 131.2 | 139.5 |
| California | 98.5% | 100.0% | 344.6 | 279.6 | 1.282 | 1.345 | 268.9 | 208 | 135 | 158.2 | 1.054 | 1.154 | 128 | 137.1 |
| Oregon | 92.8% | 93.0% | 297.4 | 591 | 1.123 | 1.346 | 264.7 | 439.1 | 103.5 | 130.9 | 0.707 | 0.857 | 146.3 | 152.8 |
| Washington | 95.2% | 95.2% | 372.5 | 623.5 | 1.413 | 1.752 | 263.5 | 355.9 | 144.3 | 158.6 | 1.024 | 1.087 | 140.9 | 146 |
| Pacific Noncontiguous | 93.3% | 93.4% | 378.8 | 323 | 2.464 | 2.607 | 153.7 | 123.9 | 207.4 | 213.7 | 1.841 | 2.066 | 112.7 | 103.4 |
| Alaska | 84.2% | 84.2% | 540.9 | 327.1 | 3.203 | 2.591 | 168.9 | 126.3 | 242.7 | 192.4 | 2.204 | 1.862 | 110.1 | 103.3 |
| Hawaii | 99.7% | 99.9% | 282.1 | 320.6 | 2.023 | 2.616 | 139.4 | 122.6 | 187.5 | 225.6 | 1.636 | 2.18 | 114.6 | 103.5 |
| U.S. Total | 94.7% | 95.0% | 262.6 | 611.3 | 1.338 | 1.521 | 196.3 | 401.9 | 120.8 | 126 | 1.053 | 1.043 | 114.7 | 120.8 |
| SAIDI = System Average Interruption Duration Index. It is the minutes of non-momentary electric interruptions, per year, the average customer experienced. SAIFI = System Average Interruption Frequency Index. It is the number of non-momentary electric interruptions, per year, the average customer experienced. CAIDI = Customer Average Interruption Duration Index. It is average number of minutes it takes to restore non-momentary electric interruptions. Any method combines data from utilities that use IEEE standard with data from utilities that do not. For utilities using the IEEE method, a Major Event Day is any day that exceeds a daily SAIDI threshold called Tmed. Tmed is a duration statistic calculated from daily SAIDI values from the past five years. For utilities not using IEEE methods, Major Events are self-determined by the reporting utility. Percent of Customers Reported is an estimate of the percentage of total customers covered by these metrics. The numerator is reported number of meters used on the reliability schedule, while the denominator is the number of customers reported on the sales to ultimate customers schedule. It is possible, in some instances, for this metric to exceed 100%. |
| For a five minute video explanation of these metrics, go to https://youtu.be/oVH9L0fCMTU. |
| Source: U.S. Energy Information Administration, Form EIA-861, Annual Electric Power Industry Report. |