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Electric Power Annual

With Data for 2025 Release Date: October 21, 2026 Next Release: October 2027
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SAS Output
Table 11.5 SAIFI Values (Times Per Year) of U.S. Distribution System by State, 2015 - 2025

  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		 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015
New England 1.114 1.301 1.368 1.341 1.354 1.98 1.359 1.785 1.488 1.411 1.056 0.866 0.906 0.919 0.972 1.013 1.03 0.922 1.075 0.858 1.202 0.989 1.075 1.242 1.298 1.333 1.277 1.897 1.299 1.705 1.44 1.291 1.013 1.164 1.382 1.398 1.382 1.362 1.856 1.386 1.744 1.45 1.307 1.029 0.914 0.951 0.944 0.997 1.042 1.101 0.936 1.085 0.91 1.148 0.972
Connecticut 0.935 0.877 0.911 0.905 0.989 1.982 0.998 1.286 1.045 1.16 0.757 0.656 0.649 0.681 0.673 0.69 0.691 0.658 0.731 0.759 0.993 0.699 0.934 0.858 0.876 0.897 0.976 1.962 0.994 1.256 1.035 1.15 0.748 0.928 0.876 0.872 0.821 0.895 1.827 0.971 1.255 0.947 1.063 0.7 0.653 0.644 0.655 0.621 0.639 0.659 0.621 0.705 0.682 0.906 0.647
Maine 2.24 3.636 3.314 3.001 2.492 3.863 2.525 2.801 2.814 2.693 1.871 1.834 2.139 1.979 1.956 2.072 2.117 1.679 2.038 1.93 2.166 1.818 2.091 3.326 3.015 2.786 2.223 3.75 2.292 2.598 2.632 2.369 1.677 2.24 3.636 3.314 3.001 2.492 3.863 2.525 2.801 2.814 2.693 1.871 1.834 2.139 1.979 1.956 2.072 2.117 1.679 2.038 1.93 2.166 1.818
Massachusetts 0.909 0.852 1.069 1.093 1.231 1.216 1.115 1.661 1.026 1.027 0.781 0.744 0.748 0.79 0.897 0.889 0.802 0.77 0.853 0.254 0.91 0.745 0.87 0.829 1.025 0.997 1.108 1.159 1.089 1.612 0.988 0.876 0.782 0.906 0.843 1.057 1.08 1.217 1.302 1.224 1.552 1.087 0.991 0.787 0.744 0.743 0.78 0.885 0.88 1.01 0.842 0.918 0.577 0.923 0.746
New Hampshire 1.12 1.616 1.485 1.417 1.095 1.514 1.168 1.889 2.004 1.534 1.13 0.788 0.775 0.766 0.7 0.858 0.913 0.765 1.082 1.146 1.36 1.095 1.113 1.597 1.48 1.383 0.954 1.504 1.168 1.871 1.982 1.49 1.054 1.447 2.021 1.753 1.783 1.368 1.821 1.429 2.173 2.297 1.537 1.384 1.019 0.985 0.989 0.931 1.078 1.085 0.919 1.268 1.295 1.382 1.353
Rhode Island 0.96 0.896 0.782 0.959 1.429 1.966 1.397 1.57 1.185 1.206 1.231 0.73 0.761 0.667 0.808 0.948 0.945 1.024 1.001 0.775 0.973 0.937 0.949 0.862 0.736 0.932 1.394 1.442 1.247 1.394 1.103 1.046 1.231 0.96 0.896 0.782 0.959 1.429 1.966 1.397 1.57 1.185 1.206 1.231 0.73 0.761 0.667 0.808 0.948 0.945 1.024 1.001 0.775 0.973 0.937
Vermont 2.06 3.34 2.25 2.44 1.91 1.63 1.96 3.39 2.609 1.552 1.765 1.45 1.4 1.38 1.95 1.91 1.63 1.49 2.34 1.632 1.552 1.765 1.42 2.06 2.04 2.26 1.75 1.56 1.9 2.86 2.491 1.372 1.531 1.697 2.516 2.352 2.62 2.074 1.898 1.981 2.619 2.413 1.862 1.67 1.563 1.661 1.58 1.967 2.058 1.926 1.465 1.908 1.889 1.8 1.748
Middle Atlantic 1.309 1.34 1.041 1.102 1.156 1.45 1.293 1.466 1.098 1.162 1.047 1.029 0.986 0.89 0.952 0.959 0.96 0.999 1.015 0.927 1.023 0.937 1.193 1.232 0.951 1.017 1.05 1.341 1.193 1.354 1.017 1.084 0.973 1.064 1.099 0.883 0.958 0.999 1.218 1.087 1.237 0.95 0.959 0.849 0.835 0.804 0.736 0.802 0.821 0.82 0.831 0.84 0.781 0.845 0.766
New Jersey 1.12 1.116 0.88 0.876 1.002 1.581 1.193 1.415 0.936 1.158 0.994 0.969 0.944 0.83 0.838 0.886 0.939 0.942 0.962 0.876 0.981 0.833 0.999 0.971 0.783 0.776 0.868 1.438 1.081 1.287 0.881 1.083 0.953 1.123 1.119 0.881 0.875 1 1.583 1.19 1.421 0.934 1.154 0.991 0.971 0.948 0.831 0.838 0.885 0.938 0.942 0.964 0.875 0.98 0.833
New York 1.405 1.668 1.127 1.466 1.311 1.479 1.475 1.518 1.397 1.313 1.173 1.125 1.063 0.963 1.162 1.109 1.077 1.044 1.056 1.02 1.19 1.135 1.37 1.661 1.14 1.489 1.31 1.497 1.487 1.532 1.412 1.235 1.137 0.796 0.91 0.725 0.872 0.854 0.975 0.876 1.005 0.844 0.783 0.671 0.638 0.611 0.586 0.666 0.686 0.683 0.635 0.648 0.62 0.694 0.64
Pennsylvania 1.424 1.393 1.143 1.163 1.227 1.336 1.312 1.489 1.126 1.092 1.02 1.04 0.989 0.914 0.975 0.967 0.939 1.029 1.044 0.935 0.973 0.909 1.282 1.278 1.025 1.059 1.11 1.215 1.187 1.35 0.998 1.011 0.909 1.408 1.353 1.108 1.139 1.2 1.297 1.309 1.431 1.109 1.067 0.994 1.018 0.971 0.878 0.968 0.963 0.928 1.025 1.022 0.938 0.96 0.891
East North Central 1.184 1.159 1.187 1.212 1.264 1.179 1.307 1.199 1.193 1.106 1.201 0.911 0.869 0.808 0.931 0.931 0.909 1 0.974 0.92 0.939 1.036 1.067 1.058 1.113 1.09 1.156 1.071 1.182 1.087 1.103 1.019 1.042 1.175 1.155 1.177 1.204 1.251 1.167 1.297 1.194 1.183 1.104 1.187 0.907 0.868 0.804 0.926 0.928 0.907 1 0.975 0.918 0.939 1.028
Illinois 0.872 0.848 0.833 0.756 0.901 0.925 0.923 0.912 0.921 1.016 1.112 0.703 0.637 0.604 0.643 0.704 0.653 0.762 0.777 0.749 0.83 0.937 0.839 0.815 0.819 0.745 0.876 0.903 0.906 0.887 0.9 0.999 1.072 0.871 0.852 0.835 0.761 0.907 0.924 0.926 0.916 0.926 1.023 1.111 0.704 0.644 0.605 0.645 0.702 0.654 0.763 0.779 0.754 0.831 0.94
Indiana 1.391 1.276 1.414 1.427 1.39 1.31 1.524 1.493 1.313 1.347 1.294 0.977 1.008 0.944 1.136 1.077 1.005 1.171 1.153 1.045 1.064 1.041 1.287 1.14 1.292 1.229 1.141 1.011 1.248 1.232 1.136 1.16 1.142 1.39 1.283 1.447 1.431 1.358 1.289 1.503 1.457 1.27 1.336 1.263 0.984 0.997 0.946 1.123 1.06 0.996 1.17 1.133 1.01 1.048 1.022
Michigan 1.418 1.365 1.543 1.34 1.647 1.375 1.542 1.374 1.413 1.13 1.151 1.038 0.983 0.931 1.016 1.017 1.069 1.162 1.054 0.984 1.004 0.979 1.223 1.252 1.533 1.326 1.615 1.339 1.505 1.346 1.388 1.105 1.119 1.424 1.356 1.512 1.339 1.656 1.384 1.535 1.373 1.414 1.146 1.141 1.036 0.986 0.921 1.015 1.033 1.082 1.162 1.055 0.989 1.012 0.967
Ohio 1.275 1.298 1.252 1.518 1.33 1.356 1.475 1.408 1.351 1.181 1.193 1.082 0.999 0.918 1.122 1.12 1.073 1.136 1.174 1.134 1.058 1.128 1.117 1.124 1.075 1.204 1.099 1.168 1.224 1.16 1.149 0.989 1.021 1.275 1.298 1.252 1.517 1.326 1.356 1.474 1.411 1.354 1.184 1.205 1.082 0.999 0.918 1.121 1.121 1.073 1.136 1.178 1.137 1.065 1.141
Wisconsin 0.987 1.041 0.913 1.101 1.079 0.833 1.122 0.768 0.928 0.864 1.456 0.673 0.726 0.633 0.763 0.695 0.71 0.723 0.649 0.583 0.668 1.174 0.943 1.021 0.881 1.053 1.059 0.774 1.051 0.737 0.886 0.826 0.752 0.94 1.02 0.877 1.043 1.011 0.802 1.095 0.811 0.909 0.841 1.319 0.677 0.729 0.631 0.751 0.692 0.703 0.755 0.702 0.625 0.686 1.099
West North Central 1.27 1.229 1.093 1.107 1.176 1.045 1.15 1.037 1.114 1.204 1.136 0.891 0.879 0.811 0.868 0.843 0.855 0.902 0.878 0.86 0.94 0.998 1.142 1.113 0.973 0.98 1.043 0.985 1.063 0.92 0.995 1.053 1.026 1.244 1.217 1.079 1.083 1.145 1.061 1.132 1.026 1.101 1.142 1.109 0.881 0.883 0.811 0.862 0.839 0.849 0.908 0.882 0.865 0.93 0.964
Iowa 1.141 1.213 0.859 0.978 0.959 1.489 1.128 1.021 1.073 1.166 0.997 0.767 0.811 0.645 0.837 0.812 0.864 0.936 0.933 0.968 0.99 0.963 0.949 1.043 0.741 0.76 0.78 1.341 0.961 0.851 0.851 0.897 0.849 1.032 1.15 0.907 0.888 0.923 1.487 1.08 1.015 1.002 1.049 0.964 0.775 0.887 0.709 0.809 0.805 0.849 0.947 0.938 0.907 0.937 0.924
Kansas 1.309 1.503 1.327 1.321 1.537 0.945 1.361 1.163 1.488 1.423 1.629 0.964 1.005 1.004 1.087 1.064 0.89 1.028 0.986 1.145 1.238 1.306 1.174 1.35 1.171 1.143 1.346 0.91 1.342 1.007 1.248 1.281 1.39 1.319 1.506 1.318 1.321 1.534 0.945 1.368 1.168 1.481 1.408 1.629 0.959 1.003 0.998 1.086 1.059 0.886 1.034 0.988 1.145 1.231 1.312
Minnesota 1.176 1.262 0.973 1.207 1.039 1.037 0.987 1.032 0.953 1.217 0.972 0.939 0.902 0.778 0.846 0.867 0.895 0.793 0.889 0.77 0.861 0.828 1.072 1.144 0.859 1.101 0.94 0.962 0.878 0.907 0.877 1.096 0.903 1.175 1.25 0.973 1.21 1.041 1.036 0.994 1.016 0.946 1.193 0.969 0.945 0.901 0.785 0.856 0.876 0.901 0.805 0.885 0.775 0.855 0.813
Missouri 1.372 1.176 1.324 1.057 1.265 1.002 1.301 0.974 1.16 1.042 1.023 0.958 0.924 0.878 0.879 0.834 0.862 1.019 0.831 0.782 0.776 0.932 1.272 1.07 1.263 0.985 1.147 0.969 1.557 1.108 1.303 0.963 1.276 1.365 1.189 1.315 1.05 1.244 0.997 1.297 0.973 1.201 1.05 1.058 0.947 0.919 0.876 0.876 0.828 0.851 1.018 0.841 0.823 0.799 0.951
Nebraska 1.322 1.244 0.555 0.59 1.165 0.792 0.659 1.099 0.909 0.702 0.662 0.614 0.6 0.478 0.534 0.516 0.552 0.549 0.73 0.677 0.578 0.572 1.306 1.235 0.545 0.573 1.144 0.917 0.655 0.651 0.672 0.648 0.523 1.319 1.232 0.558 0.608 1.154 0.79 0.654 1.085 0.879 0.675 0.732 0.604 0.595 0.48 0.541 0.511 0.556 0.547 0.707 0.676 0.556 0.553
North Dakota 1.186 0.942 1.151 1.425 1.003 1.151 1.006 0.954 1.039 2.063 2.38 0.845 0.881 0.942 1.065 0.956 1 0.832 0.874 0.943 1.932 2.319 1.026 0.681 0.843 1.126 0.643 0.814 0.785 0.693 0.675 1.046 0.713 1.142 0.915 1.055 1.297 0.879 0.972 0.87 0.914 0.966 1.614 2.074 0.818 0.857 0.907 1.036 0.968 0.953 0.819 0.888 0.897 1.852 2.319
South Dakota 1.335 0.815 1.017 1.204 0.979 1.094 1.627 1.108 1.156 1.362 1.121 0.757 0.72 0.894 0.793 0.679 0.896 1.101 0.928 1.064 0.998 0.939 0.863 0.582 0.691 0.89 0.69 0.745 1.114 0.696 0.9 0.88 0.87 1.335 0.815 1.011 1.235 1.009 1.096 1.576 1.084 1.152 1.4 1.133 0.757 0.72 0.894 0.793 0.679 0.896 1.094 0.915 1.049 0.99 0.926
South Atlantic 1.293 1.83 1.341 1.662 1.153 1.464 1.296 1.584 1.768 1.6 1.335 1.075 1.032 1.071 1.097 1.017 1.105 1.085 1.148 1.112 1.195 1.173 1.126 1.671 1.176 1.526 1.052 1.27 1.172 1.469 1.604 1.465 1.18 1.319 1.785 1.344 1.655 1.182 1.475 1.322 1.559 1.742 1.562 1.315 1.09 1.042 1.082 1.105 1.035 1.131 1.101 1.153 1.115 1.199 1.167
Delaware 0.942 0.855 0.842 0.853 0.963 1.51 0.981 1.037 1.131 1.343 1.53 0.789 0.727 0.701 0.767 0.963 0.951 0.864 0.859 0.994 1.147 1.298 0.962 0.857 0.858 0.864 0.953 1.5 0.981 0.98 1.09 1.303 1.369 0.929 0.843 0.83 0.853 0.963 1.51 0.976 1.032 1.128 1.35 1.522 0.779 0.717 0.692 0.767 0.963 0.951 0.86 0.856 0.992 1.156 1.292
District of Columbia 0.324 0.271 0.37 0.302 0.45 0.4 0.59 0.643 0.553 0.82 0.686 0.309 0.246 0.318 0.277 0.41 0.37 0.49 0.538 0.553 0.82 0.686 0.324 0.271 0.37 0.302 0.45 0.4 0.59 0.643 0.55 0.82 0.686 0.324 0.271 0.37 0.302 0.45 0.4 0.59 0.643 0.553 0.82 0.686 0.309 0.246 0.318 0.277 0.41 0.37 0.49 0.538 0.553 0.82 0.686
Florida 0.836 1.784 0.982 1.463 0.901 1.139 0.985 1.112 2.068 1.372 1.096 0.758 0.741 0.78 0.833 0.796 0.893 0.906 0.953 1 1.051 1.041 0.789 1.716 0.929 1.408 0.859 1.058 0.919 1.095 1.993 1.278 1.014 0.858 1.77 1.015 1.48 0.929 1.171 1.012 1.129 2.017 1.357 1.091 0.777 0.762 0.823 0.866 0.834 0.952 0.939 0.972 1.04 1.073 1.06
Georgia 1.843 2.104 1.858 1.668 1.291 1.952 1.361 1.542 2.214 1.525 1.563 1.438 1.244 1.336 1.291 1.241 1.328 1.222 1.248 1.189 1.34 1.279 1.677 1.905 1.765 1.544 1.149 1.746 1.235 1.423 2.064 1.241 1.4 1.854 2.122 1.885 1.695 1.317 1.964 1.382 1.557 2.449 1.526 1.539 1.453 1.264 1.357 1.316 1.268 1.36 1.241 1.257 1.199 1.342 1.265
Maryland 0.956 0.817 0.92 1.16 0.965 0.919 1.049 1.248 0.898 1.099 1.023 0.733 0.686 0.704 0.84 0.79 0.77 0.864 0.939 0.816 1.023 0.972 0.933 0.802 0.882 1.055 0.945 0.882 1.018 1.229 0.862 1.055 0.98 0.956 0.817 0.92 1.156 0.962 0.956 1.049 1.296 0.97 1.092 1.089 0.733 0.686 0.703 0.84 0.79 0.805 0.879 0.965 0.863 1.022 1.044
North Carolina 1.362 1.826 1.526 1.97 1.249 1.718 1.449 2.284 1.381 1.856 1.383 1.192 1.176 1.282 1.238 1.065 1.21 1.114 1.168 1.162 1.149 1.142 1.247 1.678 1.399 1.788 1.152 1.525 1.278 2.041 1.209 1.759 1.227 1.375 1.812 1.506 1.927 1.242 1.697 1.437 2.168 1.334 1.79 1.336 1.196 1.172 1.274 1.236 1.066 1.206 1.109 1.147 1.137 1.138 1.117
South Carolina 1.256 2.368 1.512 1.87 1.158 1.482 1.497 1.77 1.609 2.445 1.49 1.06 1.198 1.289 1.154 1.027 1.129 1.006 1.238 1.125 1.226 1.18 1.073 2.054 1.197 1.571 0.951 1.227 1.285 1.496 1.467 2.175 1.19 1.251 2.365 1.507 1.87 1.161 1.475 1.483 1.746 1.585 2.417 1.454 1.063 1.207 1.291 1.156 1.031 1.124 1.004 1.224 1.115 1.228 1.166
Virginia 2.351 2.238 1.655 2.541 1.981 1.808 2.091 2.605 1.617 1.692 1.548 1.692 1.641 1.522 1.838 1.565 1.608 1.7 1.744 1.443 1.509 1.449 2.057 2.038 1.561 2.444 1.883 1.695 1.943 2.447 1.51 1.349 1.418 1.951 1.627 1.461 1.853 1.576 1.633 1.727 1.817 1.375 1.545 1.429 1.44 1.342 1.283 1.343 1.254 1.323 1.342 1.389 1.176 1.346 1.245
West Virginia 3.082 2.832 2.353 2.737 2.383 2.437 2.801 2.646 2.333 2.351 2.415 2.463 2.287 1.871 2.225 2.096 2.163 2.352 2.352 2.057 2.104 2.15 2.604 2.5 2.1 2.251 2.106 2.113 2.486 2.355 2.027 2.052 2.197 3.082 2.832 2.353 2.737 2.383 2.437 2.801 2.646 2.333 2.351 2.415 2.463 2.287 1.871 2.225 2.096 2.163 2.352 2.352 2.057 2.104 2.15
East South Central 1.836 1.955 2.408 2.505 1.825 1.963 1.899 1.851 1.704 1.676 1.764 1.528 1.553 1.626 1.691 1.417 1.355 1.546 1.502 1.318 1.455 1.476 1.711 1.872 2.332 2.332 1.698 1.825 1.788 1.748 1.577 1.519 1.588 1.938 2.03 2.256 2.291 1.785 2.029 1.807 1.757 1.771 1.661 1.726 1.443 1.493 1.51 1.588 1.374 1.326 1.469 1.428 1.275 1.392 1.392
Alabama 1.918 1.749 2.281 2.28 1.378 3.499 1.783 1.959 1.92 1.759 2.021 1.431 1.29 1.481 1.973 1.161 1.372 1.097 1.488 1.403 1.541 1.625 1.736 1.654 1.972 2.151 1.58 3.364 1.528 1.744 1.754 1.492 1.842 2.011 1.87 1.574 1.448 1.43 2.381 1.41 1.522 1.959 1.571 1.699 0.986 1.037 0.979 1.159 1.08 1.13 1.1 1.174 1.07 1.167 1.244
Kentucky 1.862 1.783 1.859 1.707 1.527 1.354 1.617 1.782 1.336 1.467 1.595 1.415 1.216 1.129 1.278 1.132 1.102 1.389 1.269 1.094 1.273 1.334 1.674 1.58 1.657 1.525 1.322 1.225 1.425 1.56 1.148 1.216 1.311 1.917 1.955 1.903 1.781 1.529 1.351 1.61 1.785 1.347 1.457 1.588 1.442 1.32 1.167 1.3 1.131 1.1 1.383 1.27 1.096 1.261 1.332
Mississippi 2.502 2.482 2.627 2.168 2.29 2.379 2.012 1.733 2.121 1.861 2.148 1.997 1.882 2.113 1.729 1.494 1.407 1.587 1.604 1.486 1.634 1.809 2.701 2.714 2.932 2.254 2.468 2.374 2.154 1.87 2.319 1.918 1.928 2.594 2.555 2.717 2.429 2.367 2.513 2.096 1.762 2.196 1.927 1.969 2.032 1.963 2.142 1.967 1.556 1.487 1.607 1.633 1.571 1.712 1.579
Tennessee 1.553 1.939 2.803 3.326 2.007 2.128 2.134 1.956 1.865 1.806 1.787 1.464 1.752 1.891 1.988 1.69 1.539 1.783 1.704 1.473 1.571 1.504 1.44 1.896 2.773 3.073 1.824 2.005 2.065 1.896 1.753 1.707 1.738 1.643 2 2.812 3.196 2.019 2.14 2.151 1.901 1.806 1.78 1.769 1.539 1.764 1.898 1.949 1.706 1.573 1.794 1.689 1.469 1.566 1.49
West South Central 1.857 2.23 1.928 1.775 2.988 1.918 1.756 1.553 1.781 1.733 1.915 1.574 1.446 1.405 1.498 1.434 1.302 1.361 1.35 1.359 1.386 1.43 1.725 2.129 1.784 1.673 3.019 1.796 1.613 1.452 1.604 1.611 1.773 1.82 2.148 1.843 1.721 2.684 2.306 1.742 1.506 1.757 1.702 1.863 1.394 1.302 1.257 1.345 1.303 1.47 1.223 1.224 1.342 1.369 1.399
Arkansas 2.174 2.137 2.123 2.16 1.674 1.858 1.94 1.721 2.089 2.084 2.05 1.61 1.617 1.578 1.803 1.401 1.437 1.522 1.473 1.48 1.717 1.779 2.045 1.807 1.909 1.886 1.434 1.669 1.676 1.613 1.859 1.867 1.853 2.131 2.128 2.102 2.11 1.658 1.833 1.934 1.771 2.046 2.033 1.982 1.581 1.587 1.54 1.77 1.383 1.434 1.508 1.483 1.455 1.677 1.752
Louisiana 2.205 2.356 1.881 1.992 3.355 3.34 2.133 2.032 2.267 2.082 2.279 1.987 1.661 1.501 1.859 1.781 1.625 1.612 1.819 1.715 1.745 1.811 1.955 2.21 1.759 1.855 3.093 3.124 1.986 1.849 2.032 1.913 2.02 2.324 2.722 2.124 2.077 3.295 3.228 2.166 2.096 2.289 2.118 2.266 2.02 1.751 1.641 1.931 1.848 1.721 1.648 1.84 1.727 1.773 1.805
Oklahoma 1.724 1.584 2.079 1.452 1.519 1.787 1.6 1.449 1.463 1.69 1.87 1.295 1.265 1.134 1.264 1.272 1.199 1.338 1.202 1.184 1.296 1.282 1.435 1.251 1.713 1.169 1.163 1.428 1.271 1.218 1.184 1.352 1.582 1.816 1.731 1.862 1.442 1.4 2.111 1.53 1.331 1.445 1.582 1.782 1.277 1.147 1.143 1.266 1.244 1.101 1.149 1.134 1.151 1.253 1.174
Texas 1.756 2.293 1.889 1.704 3.33 1.636 1.66 1.428 1.691 1.638 1.843 1.519 1.398 1.39 1.399 1.382 1.223 1.281 1.24 1.3 1.295 1.338 1.657 2.27 1.777 1.656 3.525 1.543 1.549 1.348 1.531 1.547 1.733 1.704 2.114 1.763 1.654 2.9 2.222 1.672 1.389 1.667 1.599 1.781 1.287 1.218 1.175 1.203 1.201 1.486 1.118 1.089 1.283 1.27 1.308
Mountain 1.093 1.185 0.966 1.044 1.131 1.017 1.015 1.006 1.117 1.08 1.046 0.964 0.973 0.848 0.905 0.905 0.837 0.901 0.855 0.896 0.901 0.928 1 1.109 0.884 0.963 0.981 0.966 0.934 0.902 1.032 1.007 0.991 1.105 1.192 0.989 1.061 1.195 1.026 1.026 1.023 1.126 1.09 1.072 0.972 0.979 0.863 0.916 0.958 0.844 0.908 0.865 0.897 0.908 0.938
Arizona 0.881 0.963 0.951 1.024 1.055 0.797 0.865 0.917 0.867 0.839 0.857 0.825 0.88 0.788 0.871 0.813 0.742 0.748 0.582 0.562 0.756 0.776 0.889 0.935 0.916 0.979 0.988 0.75 0.782 0.823 0.81 0.781 0.789 0.892 0.988 0.984 1.053 1.22 0.818 0.886 0.943 0.885 0.833 0.857 0.836 0.898 0.817 0.897 0.973 0.767 0.775 0.611 0.575 0.751 0.776
Colorado 1.286 1.415 0.925 1.041 1.139 1.032 1.112 0.965 1.214 1.168 1.013 1.085 1.145 0.873 0.923 0.915 0.873 0.882 0.915 0.899 0.935 0.92 1.178 1.335 0.85 0.97 1.005 0.957 1.028 0.873 1.028 1.008 0.938 1.281 1.409 0.915 1.031 1.103 0.998 1.079 0.973 1.193 1.155 1.011 1.082 1.142 0.865 0.917 0.892 0.847 0.858 0.897 0.875 0.924 0.911
Idaho 1.158 1.314 1.071 1.168 1.779 1.589 1.243 1.198 1.697 1.338 1.668 0.974 1.136 0.985 1.091 1.235 1.211 1.144 1.094 1.615 1.16 1.418 0.81 0.959 0.757 0.815 1.222 1.173 0.961 1.096 1.574 1.231 1.455 1.158 1.314 1.071 1.168 1.779 1.589 1.243 1.198 1.693 1.351 1.744 0.974 1.136 0.985 1.091 1.235 1.211 1.144 1.094 1.615 1.179 1.424
Montana 1.335 1.628 1.052 1.398 1.621 1.343 1.345 1.192 1.551 1.259 1.694 1.179 1.163 1.052 1.214 1.348 1.055 1.237 1.182 1.361 1.136 1.446 1.065 1.36 0.852 1.059 1.133 1.143 1.022 0.802 1.528 0.944 1.574 1.358 1.621 1.068 1.376 1.706 1.364 1.327 1.278 1.575 1.262 1.752 1.196 1.161 1.055 1.203 1.341 1.057 1.243 1.183 1.361 1.136 1.446
Nevada 1.125 1.108 0.942 0.984 0.837 0.722 0.815 0.976 0.905 0.835 0.731 1.007 0.658 0.745 0.722 0.669 0.582 0.773 0.813 0.811 0.735 0.557 0.528 1.313 1.131 1.953 0.061 0.558 0.88 1.443 1.033 1.36 1.751 1.125 1.108 0.942 0.984 0.837 0.722 0.815 0.976 0.905 0.835 0.731 1.007 0.658 0.745 0.722 0.669 0.582 0.773 0.813 0.811 0.735 0.557
New Mexico 1.201 1.325 1.102 1.089 1.239 0.92 1.113 1.113 1.242 1.34 0.961 1.108 1.106 0.908 0.963 1.04 0.865 1.028 1.098 1.061 1.016 0.905 1.068 1.128 0.966 1 1.074 0.86 0.934 0.899 0.876 0.928 0.389 1.294 1.321 1.242 1.166 1.446 1.01 1.213 1.146 1.297 1.452 1.13 1.154 1.109 0.997 1.005 1.218 0.933 1.098 1.118 1.094 1.117 1.033
Utah 0.865 1.008 0.912 0.858 0.912 1.319 1.001 1.008 1.075 1.313 1.363 0.817 0.956 0.866 0.82 0.857 0.87 0.935 1.005 0.957 0.972 1.223 0.858 1.002 0.919 0.857 0.922 1.316 1.014 1.022 1.079 1.357 1.421 0.883 1.03 0.916 0.887 0.934 1.32 0.998 1.019 1.065 1.31 1.35 0.835 0.966 0.879 0.854 0.873 0.882 0.941 1.017 0.945 0.964 1.219
Wyoming 1.514 0.999 0.935 1.286 1.131 1.892 1.455 1.319 1.685 1.511 1.505 0.925 0.925 0.825 1.146 0.959 1.089 1.37 1.19 1.615 1.356 1.444 1.433 1.018 0.915 1.244 1.102 1.703 1.419 1.148 1.542 1.445 1.258 1.514 0.999 0.994 1.332 1.163 1.836 1.49 1.269 1.662 1.488 1.486 0.867 0.869 0.77 1.074 0.897 1.024 1.285 1.19 1.615 1.356 1.444
Pacific Contiguous 1.311 1.42 1.295 1.306 1.412 1.134 1.226 0.983 1.294 1.052 1.019 1.03 1.133 1.035 1.091 1.016 0.875 0.847 0.845 0.887 0.898 0.809 1.271 1.41 1.215 1.224 0.979 0.696 0.908 0.612 0.886 1.033 0.994 1.29 1.413 1.284 1.29 1.396 1.119 1.223 0.993 1.293 1.056 1.047 1.018 1.117 1.027 1.078 1.008 0.873 0.85 0.846 0.9 0.9 0.822
California 1.305 1.353 1.409 1.259 1.315 1.093 1.259 0.958 1.275 1.014 0.916 1.069 1.181 1.097 1.146 1.042 0.883 0.872 0.857 0.884 0.923 0.816 1.334 1.429 1.393 1.221 0.8 0.443 0.869 0.504 0.771 1.022 0.933 1.282 1.345 1.397 1.248 1.309 1.077 1.261 0.955 1.284 1.027 0.925 1.054 1.154 1.086 1.127 1.033 0.879 0.876 0.854 0.894 0.938 0.833
Oregon 1.118 1.324 0.808 1.311 1.604 1.13 0.989 0.9 1.344 1.105 1.051 0.702 0.824 0.738 0.804 0.758 0.749 0.747 0.795 0.859 0.778 0.711 1.014 1.197 0.753 1.215 1.473 1.075 0.919 0.842 1.302 1.029 1.026 1.123 1.346 0.825 1.288 1.571 1.142 0.996 0.916 1.318 1.091 1.006 0.707 0.857 0.751 0.813 0.764 0.753 0.745 0.804 0.867 0.776 0.717
Washington 1.445 1.774 1.05 1.52 1.756 1.327 1.205 1.168 1.367 1.243 1.702 1.033 1.085 0.915 0.99 1.035 0.91 0.783 0.817 0.925 0.83 0.842 1.159 1.445 0.725 1.24 1.45 1.138 1.066 0.989 1.229 1.098 1.342 1.413 1.752 1.025 1.481 1.692 1.302 1.174 1.211 1.321 1.172 1.701 1.024 1.087 0.908 0.991 1.024 0.906 0.779 0.827 0.946 0.782 0.826
Pacific Noncontiguous 3.071 2.55 3.374 4.959 2.372 1.494 1.744 2.26 1.713 1.67 2.057 2.221 1.92 2.366 3.406 1.723 1.436 1.307 1.954 1.45 1.309 1.481 2.293 1.524 2.503 3.431 1.778 1.129 1.443 1.781 1.625 1.487 2.55 2.464 2.607 2.127 2.341 1.799 1.581 2.102 2.389 1.955 2.028 2.873 1.841 2.066 1.595 1.745 1.335 1.436 1.307 1.954 1.45 1.556 1.663
Alaska 3.024 2.321 3.26 4.959 2.372 1.968 1.92 2.931 1.574 2.111 2.319 2.204 1.862 2.366 3.406 1.723 2.218 1.588 2.603 1.826 1.858 1.531 2.763 1.84 2.503 3.431 1.778 1.501 1.578 2.345 1.548 2.444 2.55 3.203 2.591 2.701 3.523 2.132 2.195 2.192 3.137 1.709 2.261 2.555 2.204 1.862 2.366 3.406 1.723 2.218 1.588 2.603 1.826 1.858 1.531
Hawaii 3.45 4.39 3.922     1.207 1.64 1.867 1.794 1.3 1.911 2.36 2.39       1.112 1.192 1.688 1.295 1.002 1.454 0 0       0.975 1.387 1.549 1.657 1.049   2.023 2.616 1.788 1.647 1.6 1.217 2.05 1.959 2.092 1.897 2.986 1.636 2.18 1.398 1.195 1.199 1.112 1.192 1.688 1.295 1.444 1.711
U.S. Total 1.34 1.531 1.348 1.426 1.436 1.385 1.332 1.34 1.42 1.327 1.275 1.08 1.065 1.022 1.09 1.039 1.013 1.04 1.051 1.023 1.082 1.073 1.226 1.431 1.242 1.315 1.294 1.238 1.189 1.193 1.254 1.23 1.163 1.338 1.521 1.333 1.405 1.425 1.44 1.325 1.325 1.394 1.292 1.246 1.053 1.043 0.999 1.064 1.025 1.037 1.017 1.028 1.007 1.062 1.046

SAIFI = System Average Interruption Frequency Index. It is the number 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.

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