Table 11.4 SAIDI Values (Minutes Per Year) of U.S. Distribution System by State, 2014 - 2024

  IEEE Any Method
  All Events (With Major Event Days) Without Major Event Days Loss of Supply Removed All Events (With Major Event Days) Without Major Event Days
Census Division
and State
2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014
New England 389.8 489.3 309.3 382.1 1272.9 351.5 723.6 776.5 231.2 145.7 306.7 101.4 103.4 98.2 104.1 101.9 95 119.1 107.9 126.3 99.2 109.4 387.1 481.2 349.9 357.7 1284 351.7 721.4 780.4 229.4 140 303.4 419.6 480.5 333 364 1067.1 335.8 715.4 682.4 211.1 137.3 319.6 112.3 107.8 104.2 109.5 144.5 104.4 124.2 114.3 131.9 100.3 114.5
Connecticut 152.8 193.4 187.4 170.9 3033.8 246.6 761.6 348.9 201.1 112.5 93.7 73.6 77.7 73.7 76.7 70.2 67.5 80.9 78.1 103.2 78 93.7 152.3 188.2 187.1 169.7 3032.5 246.6 759 348.6 199.6 111.7 93.6 153.6 164.6 157.4 145.2 2642.6 236.4 655.5 291.3 174 103.3 86.3 73.1 70.3 66.1 68.6 64.6 60.9 75.8 68.2 92 70.2 86.3
Maine 1748.6 1863 963.6 325.2 1725 908.1 665.3 2492.6 535.4 213.6 1049.3 274 247.4 216.7 223.5 244.8 213.7 273 238.5 264.4 198.7 235.3 1701 1781.4 930.7 312.1 1718.4 881.8 639.3 2440.6 510.3 171.3 1046.1 1748.6 1863 963.6 325.2 1725 908.1 665.3 2492.6 535.4 213.6 1049.3 274 247.4 216.7 223.5 244.8 213.7 273 238.5 264.4 198.7 235.3
Massachusetts 103.7 265.3 165.8 527.8 224.1 244.3 865.3 178.7 148.6 86.4 126.8 77 83.5 84.4 88.1 63.6 67.5 81.3 72.7 91.6 71.1 84.1 103.9 268.5 186.4 600.8 231 256.4 907 186.1 153.3 87.6 128.1 102 259.4 163.2 518.7 318.9 250.2 813.3 275.5 144.9 91.2 124.5 76.1 82.2 83 87.2 168.1 96.1 99 92.2 113.1 75.6 83.2
New Hampshire 735.5 590.6 495.5 176.5 408.5 219.6 450.8 915.4 192.5 117.3 815.3 84.2 89.3 78.2 98.3 99 84.9 122 120.5 135.3 104.8 136.6 733 587.7 487.4 165 407.9 219.6 449.7 915 190.9 117 821.9 922.7 645.8 616.7 234.4 499.4 292 508.8 1113.3 192 149.3 862.9 132.3 124.6 107.5 127.1 121.8 111 151.7 151.1 141.1 138.2 172.5
Rhode Island 104.3 104.6 81.9 448.6 548.4 236.5 594.8 728.3 168.9 341.8 54.2 60.8 52.2 63.2 68.8 69.1 68.2 65.1 59.1 69.1 64.3 54.2 99 100.8 81.1 436 452.9 223.8 537.4 716.8 163.2 341.8 54.2 104.3 104.6 81.9 448.6 548.4 236.5 594.8 728.3 168.9 341.8 54.2 60.8 52.2 63.2 68.8 69.1 68.2 65.1 59.1 69.1 64.3 54.2
Vermont 895.8 486.3 914.6 215.3 158.4 334 929.8 1792.4 198.8 193.4 240 231.8 204.3 178.5 215.3 158.4 170.4 357.7 186.2 198.8 193.4 180 884.6 480.1 877.6 210.1 151 329.4 732.1 1782.7 187.4 179.4 240 696.7 744.4 963.5 313.2 255.6 443.8 897.6 873.9 359.4 204.2 745 275 221.3 267.6 262.4 255.6 170.1 262.1 246.4 273.2 205.6 216.4
Middle Atlantic 309.1 196.8 184.7 190.8 588.9 262.5 516.4 172.6 150 193.6 283.1 121.5 112.2 111.7 110.9 105 115.1 113.2 98.2 110.1 97.8 96.5 299.7 185.9 176.3 180.4 573.1 253.6 506.5 163.7 133.5 188.6 276.6 246.2 159.5 175.9 165.6 512.4 213.6 465.4 178.8 120.2 148.7 199.6 97.2 89.9 93.4 97.3 90.4 96.4 94 83.7 89.2 80.9 79
New Jersey 173.3 108.2 89.6 139.2 943.3 249.7 505.5 85.5 137.5 263.6 111.7 98.8 88 78.7 84.3 86.5 86.4 87.4 71 85 64 78.3 161.2 99.2 81.4 127.1 911.3 240.2 491.6 80.4 115.7 259 109.1 174.2 108.3 89.7 138.8 965.2 247.7 509.7 85.8 137.2 260.6 112 99.7 88.5 79 84.7 87 86.8 87.7 71.4 85.7 64.6 78.7
New York 477.3 204.8 347.7 218.8 447.4 323.7 396.5 344.5 206.1 146.4 198 142.8 130.1 150 131.5 142.1 136.9 145.2 132.1 160.2 137.6 116 483.6 207.5 354 221 455.1 327.5 402.7 350 185.1 143 198 219.9 120 203 142 407.7 171 405.5 227.3 107.2 86.5 92.7 72 70 77.6 80.3 79.8 78.9 79.2 72 82.2 76 63.4
Pennsylvania 353.1 265.1 207.5 222.6 355.4 252.5 564 184.5 132.3 166.2 438.3 131.5 125.9 125.4 125.2 107.5 130.5 122.8 108.4 105.1 102.1 104.1 340.9 248.3 195.1 209.6 343.6 240.3 551.3 169.1 122.1 157.4 426.9 336.1 252.7 200.4 217.8 334.2 249.1 518 176.8 126.2 156.7 399.6 131 119.2 126.1 130.2 107.8 127.7 119.3 108.7 101.4 98.8 99.7
East North Central 357.8 489.5 319.7 377 311.1 315.3 254 332.1 189.9 219.4 285.4 114.3 108.8 121.4 120.8 113.8 135.4 128.1 122.5 124.4 125.5 125.7 342.5 483.4 288.6 355.2 294.2 301.3 239.8 322.9 178.1 210.1 271.9 349.2 472.8 313.6 366.2 301.9 310.4 249.5 323.5 189.1 214.2 278.1 112.8 107.1 120.2 119.7 112.8 134.8 127.4 123 124.3 124.1 123.8
Illinois 158 210.4 90.8 127.3 335.6 116.3 143.8 120 136.1 170.9 197.6 59.1 56.2 59.1 63.6 57.1 73.8 72.5 72.8 80.7 88.4 91.9 154.7 209.9 89.2 125.6 333.9 110.3 140.5 117.1 133 168.1 197.3 156.9 208.2 90.4 127 331.1 116.2 142.9 119.7 134.9 169.3 195.7 59.4 56.2 59 63.5 57.1 73.9 72.6 73.3 80.8 88.8 92.5
Indiana 310 467.4 276.5 302.7 294.3 266.6 302.4 223.5 254.2 257.4 236.5 123.3 111.3 139.9 137.4 127.6 147.5 146.1 135.4 129.4 119.7 122.2 252.3 462.1 217.6 225.2 205.1 217.4 263 197.5 234.4 244 218.7 312.4 455.4 279.3 285.8 280.1 260.6 285.9 212.4 252.5 244 239.9 121.4 110.3 137.4 133.1 124.8 146.2 142 131.1 127.4 120.1 120.5
Michigan 481.7 1127.7 520.7 890.9 416.7 570.2 450.2 802.2 268.4 374.5 592.5 161.3 164.8 166.8 178.6 168.3 213.9 186.4 180.1 194.2 183.4 183.3 456.2 1131.2 519.9 882.1 414.3 565.5 448 798.2 262.6 363.7 589 470.4 1093.6 513.1 873.3 410.7 554.9 442.9 778.8 267.8 363.4 574.7 160.1 162.7 166 178.4 167.2 211.1 185 179.4 193.1 178.8 180
Ohio 511 366.6 413.6 244.9 283.6 303.8 240.3 246.8 169.5 167.5 185.5 133.3 127.1 144.1 136 129.2 145.2 150.1 141.8 127.1 139.4 131.4 500.3 336 318.9 191.7 261.5 277.4 210.4 225.1 142.1 149.8 142.1 510.5 366.2 413.2 244.2 283.4 305.2 242 248.4 174.1 172.1 187.9 133.2 127 144 135.9 129.2 146 151.5 143.4 128.9 141 131.8
Wisconsin 296.8 203.8 307.9 361.2 119.9 383.5 117 219.2 147.8 107.8 154.1 97.5 76.8 104.7 88 89.1 90 76.4 69.1 76.3 68.8 78 294.8 200.9 305.2 360.7 114 377.5 108.8 215.3 144.4 102.9 152.9 266.1 183 273.5 311.6 113.3 356.2 122.8 203.5 136.5 105 144.7 91.3 72.4 99.6 86.4 86.4 93 79.6 78.8 79.2 70.3 75.9
West North Central 255.3 222.7 202.8 236.4 226.8 195.2 140.2 221 222.1 179 133.1 93.9 84.6 90.1 88.9 87.6 95.4 91.1 90.3 95.1 95.6 93.2 254.7 215.6 191.7 229.3 249.4 194.8 126.1 218.7 198.9 170.1 127.2 246.9 213.8 194.8 223.6 372 187.2 139.8 210.2 200.9 167.7 134.8 94.3 85.5 89.6 88.1 87.6 95.8 92.1 90.4 93.6 91.7 91.9
Iowa 200.3 83.9 95 137.8 1066.5 126 115.4 128.1 136.5 96 151.3 84.1 60.7 78.2 80.7 85.7 83.7 92.9 103.8 96 88.1 91.1 187 75.5 80.1 115.7 1053 111 102.8 109.7 122.5 85.7 136.3 166.7 104.9 85.8 133.1 1758.7 122.8 126.8 119 117.7 96.8 164.7 89.8 70.4 75.5 79.5 87.9 89.8 92.6 95.2 92 85.5 93.4
Kansas 289.8 287.1 178.3 346 106.6 241.2 151.3 368.6 169.1 350.5 153.4 104 101.8 108.1 113.9 91.8 117.2 105.6 130.9 132.3 131.5 114.9 277.9 274.4 157.9 327.9 100.7 266.1 140 359.5 151.4 242.1 138.5 285.6 283.1 178.8 341.5 107.1 240 154.8 364.8 167.8 347.3 152.4 103.6 101.7 108.1 113 92.3 117.3 108.9 131 131.9 130.7 114.9
Minnesota 222.4 127.1 275.2 121 128 148.9 128.1 129.8 308.9 160.8 123.1 91.5 72.8 81 81.7 84.7 79.9 87.8 71.7 88.6 79.4 77.1 222.3 123.6 270.3 115.7 124.4 137.6 120.2 129.1 302.6 159.9 118.8 219.6 126.4 273.7 120.9 127.6 150.1 127.4 129.7 301.2 154.5 119.4 92.2 73.4 82.2 82.5 85.6 81.2 87.6 73.5 87.7 77.8 76.4
Missouri 212.6 379 149.5 267.9 154.1 261 151.2 307.2 215.4 164.9 134.3 106.6 104.4 97 97.8 96.7 113.6 91.8 90.8 86.6 98.3 101.2 206 391.2 144.2 265.6 159.8 372.9 174.1 445.9 149.8 249.2 139.8 224.3 371.8 148 259.7 152.6 255.2 149.6 305.8 205.7 171.1 136.7 106 106.7 97 97.3 95.1 112.8 94.6 93.3 86.7 98.2 101
Nebraska 697.8 69.4 73 556.9 115.4 78.9 185.7 160.7 63.1 67.9 98.3 69.8 55.6 56.2 59.9 67.4 59.2 76.8 72.5 49.2 50.2 50.7 696.7 66.4 71.1 555.3 96.1 54.9 96.1 110.4 52.2 49 86.3 641.7 72.6 82.1 516 113.4 84 188.2 154.3 83.6 86.2 123 73.6 56.8 62.3 60.8 68.8 62.4 74.2 69.9 52 51.9 66.7
North Dakota 102.7 262.3 677.6 101.6 123.3 132.6 111.2 91.2 152.8 113.6 102.5 87 93.9 102.8 88.4 86.8 77.1 96 70.4 110.4 101 91.6 82.2 259 789.8 77 113.3 131.6 83.8 81.8 147.1 80.2 76.7 99.1 208.6 559.6 85.4 101.1 107.1 94.4 85.9 123.8 113.9 87 84.2 89.9 99.6 85.9 82.5 74.3 95.2 67.5 108.3 99 87
South Dakota 85.6 78.1 338.3 101.3 97.4 311.4 93.1 101.7 255.8 135 120.6 61.5 63.9 126.3 61.9 71.5 108.2 73 80.3 84.4 107.6 107.9 67.5 62.2 244.7 78.2 86.7 250.6 75.7 87.7 119.1 98.1 93.5 84.7 77 327.1 105.6 97.3 295 92.1 100.6 252.2 133.3 115.8 62.1 63.2 123.5 62.7 73.2 106.7 74 81.2 83.8 106.5 106.2
South Atlantic 1405.8 240.4 615.8 191.2 321.4 206 639 1241.6 576.5 195.4 309.4 133.1 119.7 127.9 113 122.6 124.2 135.3 122.4 129.3 123.2 119.7 1352.3 211.7 635 184.8 283.3 196.5 630.8 1237.8 559.7 183.5 379.2 1247.3 227.4 663.7 192.8 307.2 205.6 615 1118.6 518.9 185.6 281.2 129.3 117.5 125.6 112.1 121.5 123.7 131.9 119.9 128.6 119.3 115.5
Delaware 117.9 109.7 79.8 64.3 271.9 102 136.2 154.6 148.7 191.4 169.8 66.8 61.2 66.4 64.3 84.9 74.2 73.8 83.3 102.3 115.5 113.9 118.9 112.1 80.8 64.8 276.1 102 135.3 153.1 147.3 180 162.7 116.1 108.2 79.8 64.3 271.9 101.6 135.9 153.9 149.1 189.9 169.1 65.9 60.4 66.4 64.3 84.9 74 74.1 83.2 103.2 114.7 113.7
District of Columbia 32.6 71.9 33.7 52 44 77 109.2 57.5 115 112.4 96 26.4 33.3 26.3 42 39 55 52.9 57.5 115 112.4 82 32.6 71.9 33.7 52 44 77 109.2 57.5 115 112.4 96 32.6 71.9 33.7 52 44 77 109.2 57.5 115 112.4 96 26.4 33.3 26.3 42 39 55 52.9 57.5 115 112.4 82
Florida 1487.6 172.3 1011.3 82.9 200.4 88.9 305.5 2693.2 388.2 86.1 89.4 66.7 69.4 69.8 65.3 72.5 74 79.6 76.7 82.7 79.3 86.6 1485.6 160 1012.6 77.2 194.9 83.2 302.8 2666.6 387 80.3 122.4 1321.5 160.1 1146.3 80.8 188.7 89 325.4 2504.2 352.1 85.4 92.1 66.4 69.2 69.7 64.8 73 74.2 77.4 78.6 81.8 77.9 85.5
Georgia 1208.1 342.7 212.4 140.5 521.7 149.8 230.7 1030.8 424 248.2 252.3 211.4 133.4 129.3 123.8 130.5 125.8 118.8 115.2 120.6 108.5 97.8 768 300.3 185.2 122.9 509.8 117.2 238.9 906.4 177.8 355.1 210.7 1229.1 349.2 264.3 145.8 509.9 152.3 373.2 1049.2 424.4 243.7 246.3 212.3 136.8 134.6 129.4 133.3 127.7 122.5 122.1 134.5 109.1 99.1
Maryland 118.1 166.2 260 127.6 113.8 143.8 330.4 103.1 120.7 117.2 255.9 75.1 66.9 84.2 80.2 76.2 89 93.6 81.5 104.5 100.2 93.6 116.7 156.1 224.6 125.1 109.2 139.3 328.4 100.7 115.5 113.8 244.4 118.1 166.2 259.1 127.1 120.3 141.3 337.1 116.5 120.3 124.4 244.8 75.1 66.9 84.2 80.2 80.9 90.6 95 85.6 105.3 109 93
North Carolina 1518.1 262.5 486 215.2 437.4 287.5 1877.6 282.2 857.5 220.8 519 143.9 156.4 150.7 125.9 146 147 168 151.1 152.1 131.3 118.7 1475 249.9 423.1 207.3 414.4 266.1 1670.3 253.4 852.6 200.5 471.1 1441 252 456.3 205.5 417.9 287.6 1761.5 264 824.6 210.6 481.9 141.4 153.5 148.6 123.6 143.7 146.2 162.3 146.3 148.6 128.2 117.1
South Carolina 3155 169.8 302.4 122.9 332.6 338.2 488.6 386.9 1698.8 234.3 787 115.9 126.5 114.8 101.3 121.3 106.3 138.8 119.4 122.1 121.9 102 2972.9 140.4 274.4 106.2 308.9 319.8 463.6 371.1 1663.3 195.3 777.9 3136.5 167.2 301.1 120.9 323.8 326.5 470.5 372.8 1645.4 224.1 799.5 117.8 126.1 114.8 100.7 119.9 105.6 137 117.8 121.3 119.3 100.1
Virginia 962.1 292.8 1108.2 798.2 337.7 478 1133.7 279.2 317.6 249 287.1 245.1 239.9 342.3 262.7 250.6 285.4 307.8 218 219.7 208.5 243 911.2 280.6 1103.6 793.3 308.6 439.2 1099.9 232.1 302.8 231.8 259.3 418.3 221.1 593.9 434.4 308.6 309 507.4 192.9 237.7 203.5 187.3 166.4 159.3 187.5 164.9 165.3 182.1 187.8 142.2 164.8 148 148.3
West Virginia 1165.5 751.5 1003.2 1117.2 604.2 755.2 739.7 690.8 743.4 814.6 662.8 486.1 385.7 543.6 451.6 467.9 471.3 513.1 451.8 439.1 458 449.8 1067.4 700.4 850.9 1002 538.6 691.2 676.3 618 582.9 771.6 597.6 1165.5 751.5 1003.2 1117.2 604.2 755.2 739.7 690.8 743.4 814.6 662.8 486.1 385.7 543.6 451.6 467.9 471.3 513.1 451.8 439.1 458 449.8
East South Central 423.7 864.3 392.5 573.8 825.2 269.4 314.9 427.7 216 272.4 263.9 176.3 186.5 187.8 152.6 147.6 160.3 156.3 144.4 147.9 154.5 152.6 423 876.2 393 582 798.5 266.7 299.8 406 210.9 255.7 253.6 415.7 715.5 349.2 513.1 902.2 269.5 290.6 389.2 203.1 239.7 226.4 162.8 168.7 175.5 147.5 146.2 156 147.4 140.5 142.1 140.5 137.6
Alabama 197.7 400.2 231.3 175.7 3320.4 183.7 457.8 242.4 174.2 274.7 282.9 120.8 189.5 198.4 110.9 144.6 106.8 136.8 130.8 140.1 167.9 154.9 189.6 380.2 230.1 215.8 3440.8 158.4 195.4 199.5 161 224.2 289.6 279.4 294.2 210.1 234.9 1743.5 174.1 308 314.5 174.8 212.3 206.1 117.8 120.2 138.8 119.1 127.3 120.2 120.6 115.9 115.8 124.9 125.4
Kentucky 537.7 861.5 345.5 698.8 284.7 204.2 407.5 193.3 194.3 245.8 249.5 145.7 140.6 151.5 130.3 125.3 148.9 146.7 120 139 140.4 146.7 520.1 841.1 328.1 630.1 275 192.1 399.8 173.9 183.9 232 233.4 648.3 868.2 345.8 707.8 282.4 203.3 406.2 194.1 191.9 243.9 246.8 153.3 143.4 151.7 129.8 125.1 148.5 146.7 120.1 137.4 139.7 145.1
Mississippi 607.3 877.8 455.9 1189.8 1611.7 466.1 271.6 580.2 276.3 363.3 279.4 279 266.6 243.3 224.5 203.9 214.3 209.7 205.5 179.9 227.7 180 693.8 991.9 519.9 1419.2 1558.2 537.3 310.2 588 302.7 316.9 278.6 567.1 802.1 448.5 1134.4 1496.7 536.5 267.5 566.8 277.4 310.4 226 266.3 252.8 246.7 220.6 211.3 220 211.9 211.3 187.3 197.5 155.7
Tennessee 289.3 926.9 428.3 316.8 618.4 252.9 217.5 621.5 212.9 257.5 277.7 169.9 192.7 194.1 151.7 144.5 160.4 145.6 141.7 141.6 134.6 143.9 283.3 933.4 425.9 299.5 601.1 251.6 213.1 603.1 206.4 256.3 263 278.6 857.9 404.5 302.7 588 266.9 199.8 512.8 197.2 222.4 225 159.5 186.1 188.3 149.4 148.4 161.4 139.6 142.4 144.4 124.9 131
West South Central 1268.9 685.6 242.8 1893.7 1018.2 309 203.4 455.6 265.6 318 204.8 164.2 163.3 178.3 186.6 153.5 162.3 150.3 144.8 145.8 155.3 130.9 1295.8 671.2 238.8 1400.7 1044.4 286.5 197.5 425.5 260.2 295.2 242 1050.4 579.1 237.4 1456.9 1101.8 330 194.6 440 260.6 343.2 193.6 142.3 142 154.9 161.2 171.3 142.4 134.6 145.7 145.1 154.9 128.7
Arkansas 527.8 915.3 437.5 308.4 771.6 451.2 330.9 405.6 400.5 326.2 238.5 201.9 230.7 279.6 199.4 210.6 228 214.1 176 213.7 222.6 216.5 377.8 879 427.2 286.2 727.9 376.1 325.8 383 404.8 324.8 593.9 509.1 911.2 415.5 315.9 708.4 437.7 322.9 395.4 397.3 306.7 235.1 194.6 221.7 274.7 195.9 204.7 221.9 210 178.3 208.3 216.8 212.2
Louisiana 630.6 663.2 323.8 5868.8 4331.9 521.2 285.7 423.5 442.6 411.9 499.1 215.9 199.3 252.2 265 217.9 223.5 214.2 196.9 190.1 199 156.7 603 633.7 306.6 5836.4 4204.5 441.5 260.7 400.9 429.8 392.1 271.9 727.5 584.2 304 4811.1 3624.4 472.3 276 390.6 392.9 361.1 310.4 206 195 246.1 228.2 216.4 208.1 206.1 192.1 185.7 188.9 154.1
Oklahoma 220.7 1339.4 165.6 165.9 565.1 186.2 154.7 194 326.3 597 115.9 121.3 123.8 122.4 126.2 139.3 138.4 113.9 118 122.3 123.1 102.6 188.1 1012.7 141.7 132.9 475.5 153.5 135.5 147.8 316.1 346 92.1 270.9 896.6 195.6 179.4 2922 334.9 175.6 291.2 316.6 831.4 119.1 119.6 139.3 144.2 146.5 144.3 139 127.2 140.6 149.5 166.8 104.1
Texas 1614.3 583.1 204.6 1496.4 419.4 254.8 170.4 486.8 216.8 279.8 198.6 153.4 150.3 153.7 174.7 132.7 141.4 130.2 135.1 132.7 143 118.6 1724.6 604.3 202.6 683.7 426.3 248.4 165.9 457.5 208.7 270.2 206.6 1270.6 496.2 212 1175.3 432.7 290.7 167.2 477.6 210.8 271.7 192.5 129.4 124.7 127.5 147.4 163.7 121.8 113.7 133.8 129.3 139.1 116.9
Mountain 176.3 117.9 153.2 166.3 178.8 131.1 119 131.7 131.3 131.7 107.3 102.4 90.4 95.4 95.5 87.3 91.2 88.6 95.6 90.6 95.2 88.1 169.5 101.2 123.5 138.1 179.7 125.3 106.8 125.2 134 128.8 99.3 181.3 120.2 155.9 174.8 181.6 134.4 125.5 161.4 136.5 148.6 111.6 105.8 91.7 98.5 99.7 90.7 94.5 91.6 98.1 91.7 100.5 90.9
Arizona 83.6 103.8 136.9 101.9 70.6 83.3 111.6 89.5 86.9 89.6 86.9 69.8 66.9 69.1 69.3 62 64 57.6 50.8 67.9 66 59.8 75.8 88.7 103.7 91 65 71.6 94.3 82.9 85.9 87.4 83.4 87.5 106.8 139.7 106.2 71.9 85.8 114.6 90.7 86.3 90.9 87.2 72 69.3 72.3 71.7 63.6 67.2 61.1 51.4 67.5 66 59.7
Colorado 257 100.2 143.7 185.4 136.4 184.5 99.9 132.7 154.5 107.9 86.7 118.9 89.2 96.9 104.8 83.4 84.3 86.5 80.2 83.5 83.9 81.6 251.2 96.2 138.2 168.4 131.5 181.9 96.5 122.1 147.2 103 80.9 255.1 99.2 141.5 180.9 134.2 180.5 113.3 228.5 165.5 110.1 84 119 88.4 96.2 102.6 82.6 83.6 85.5 78.6 82.5 83.4 79
Idaho 204.4 134.4 167.4 438 286.5 155.4 169.9 253.9 183 238.1 168.4 152.5 121.8 144.5 137.5 158.1 132.3 140.8 223.9 157.6 193.2 139.9 150.5 95.9 112.7 223.8 173.6 122.9 155.7 239 174 204.2 145.9 232.8 137.5 180.7 475.2 324.9 166.6 174.1 313.8 197.2 465.3 245.2 174 119.4 158.3 162.1 180.7 143.9 144.9 248.5 166 266.4 183.8
Montana 341.7 113.9 224.7 251.7 275.3 165.8 135.4 218.9 155.7 295.4 144.9 152.3 113.9 139.6 142.6 136 121.7 118.3 160.8 128.8 143.5 123.8 298.1 93.9 187.7 211.2 240.7 138.9 107.4 209.1 110.7 284.7 137.3 351.5 118.7 225.6 309.9 271.3 169.3 142.7 215.4 160.7 287.9 138.8 156.6 117.1 146.1 146 140.9 127 118 161.4 129.9 142.3 123.5
Nevada 158.9 138.7 195.1 102.4 73.3 87 126.2 114.4 95.7 107 75.7 63.8 81.2 77 69.6 55.3 77.5 76.7 87.7 73.7 55.4 62.6 116.7 96.9 424.3 6.8 54.4 92 93.3 82.8 457 153.8   158.9 138.7 195.1 102.4 73.3 87 126.2 114.4 95.7 107 75.7 63.8 81.2 77 69.6 55.3 77.5 76.7 87.7 73.7 55.4 62.6
New Mexico 272.6 156 175.2 204.3 140.1 158.2 132.9 121.2 130.4 108.8 74.5 152 123.7 125.4 120 113.6 121.5 123.9 114.5 102.2 95.6 76.3 255.4 139 134.6 190.9 136.4 141.6 118.1 105.1 103.3 53.3 27 278.8 168.9 182.6 221.2 148.2 170.2 138.3 140.6 136.3 122.3 82.4 156.5 132.3 129.1 131.7 118.8 128.4 126 115.7 104.1 99.2 79.8
Utah 115.4 127.7 108.7 113.4 591.8 144.4 115.5 142.1 193.4 203.2 193.9 105 108.5 96.6 98 100.9 110.8 115.5 116.3 106.1 156.4 151 108.9 119.9 103.4 114.9 614 140.5 119.8 139.1 206.4 217.6 167.9 119.8 127.1 111.3 116 575.1 146.2 125.3 139 190.1 199.6 187.2 106.7 109.8 100.4 100.9 101.5 115.4 126.6 114.6 105.6 155.5 148.9
Wyoming 137.8 121.4 159 167.9 293.4 166.8 125.4 201.4 180.2 181.3 201.9 116 102.6 116.1 115.6 105.1 134 107.1 171.9 135.6 163.3 177.4 128.6 106.4 157.3 165.1 263.5 151.1 116.9 190.1 172.5 159.4 166.5 137.8 127 170.1 170.5 289.7 164.5 136.7 217.6 192.5 184.6 193.2 109.1 96 113 116.3 111.3 130 117.6 191.1 150.2 165.7 177.6
Pacific Contiguous 371.7 299.1 246.2 483.8 282.8 528.9 200.9 258.5 147.8 188.1 160.6 159.6 147.8 152.8 145.5 110.4 106.1 101 108.8 103.5 97.2 106.1 380 287.3 232.3 421.8 266.3 522.5 159.8 217.7 141.4 170.5 158.6 365.4 294.2 242.3 464.7 270.2 507.7 200 244.7 145.3 204.8 157.8 155.8 144.6 148.8 141.6 107.7 104.2 98.5 106.3 100.5 95.5 103
California 285 352.5 202.4 335.2 280.7 610.7 199.4 243.2 119.9 120.4 113 164.4 157.1 156.5 148 107.6 106.7 99.5 104 100.8 93.2 103.3 306.3 351.5 195.3 266 266 615.7 150 190.2 119.7 123.9 116.8 279.6 346.6 198.5 325.2 267.1 587.6 195.2 233.4 117.1 118.4 108.8 158.2 152 150.5 142.7 104 103.9 96 100.9 98.7 91.9 99.8
Oregon 579.3 122.9 325.2 1588.3 325.9 230.4 111.4 314.5 233.5 225.9 259.9 124.1 103.5 121 113.9 103.4 101.6 90.3 111.6 101.1 102.2 108.1 547 115.9 304 1500.8 317.9 224.4 103.6 315.6 175.8 220.5 227.3 591 126.9 322.9 1489.2 311 221.6 113.1 295.7 240.3 212.6 289.3 130.9 108 123.4 116.5 104.4 103.6 92.5 111.2 100.5 102.1 107
Washington 643.5 153.8 403.6 554.5 268.6 310.9 265.3 311.3 258 620.9 412.6 157.3 129.8 153.5 151.1 126.9 105.8 115.5 135.8 121.3 120 124.2 587.2 113.4 345.6 468.6 237.8 292.2 244.2 301.3 236.7 417.2 362.8 623.5 151.7 395.3 527.3 261.6 300 270.4 269.5 226 646.3 330.5 158.6 130.6 154.9 150.4 127 105.6 114 129.9 109.3 110.9 117.9
Pacific Noncontiguous 329.8 456.2 891.3 537.3 174 218 250.2 215.4 149.1 332.4 312 195.4 325.7 334.9 230.6 140.8 134.1 163.9 119.3 116.8 119.3 161.5 307.3 472.5 820.6 501.7 157.1 209.3 238.3 225.5 153.3 782.3 264.9 323 448.4 330.8 285.5 174.3 226.2 243.9 216.6 151.7 361.1 274.1 213.7 184.6 162.9 145.5 140.8 134.1 163.9 119.3 123.6 127 126.3
Alaska 323.2 499.4 891.3 537.3 256.9 279 339.3 149.2 196.6 657.8 312 192.4 325.7 334.9 230.6 245.5 184.1 193.1 136.9 176.9 155.1 161.5 371 472.5 820.6 501.7 251.4 317.1 359.2 159.6 272.5 782.3 264.9 327.1 374.8 575.2 379.1 268 280.1 335.3 152.7 192.5 605.4 313.8 192.4 325.7 334.9 230.6 245.5 184.1 193.1 136.9 176.9 155.1 161.5
Hawaii 382.6 248.8     123.8 182.1 198 254.3 109.3 152   219.3       97.3 113.4 151.9 112 83.2 99.4   0       118 164.8 188.7 252.7 98.9     320.6 491.8 187.2 229.7 118.7 195.2 191.4 252.3 128.7 266.1 262.5 225.6 148.6 105.9 115.7 97.3 113.4 151.9 112 103.9 116.7 117
U.S. Total 662.6 366.6 333 475.8 456.1 295.5 349.2 505.9 268.4 209 236.2 131.6 123.9 131.1 125.7 116 122.2 121.4 117 119.8 117 114.2 646.1 357.7 324.7 404.5 460.5 289.1 338.5 489.6 257 198.2 244.8 611.3 342 335.5 440 491.9 284.6 346.4 473.1 249.2 205 219 126 118.4 125.7 121.5 119 118.6 117.2 114.4 116.9 113.1 109.7

SAIDI = System Average Interruption Duration Index. It is the minutes of non-momentary electric interruptions, per year, the average customer experienced.
IEEE refers to the IEEE 1366-2003 or the IEEE 1366-2012 standard. 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.
Loss of Supply Removed excludes outages due to loss of supply from the high-voltage/bulk power system.
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.