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Electric Power Annual

With Data for 2024 Release Date: October 16, 2025 Next Release: October 2026 full report PDF
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SAS Output
Table 11.5 SAIFI Values (Times 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 1.301 1.368 1.341 1.354 1.98 1.359 1.785 1.488 1.411 1.056 1.567 0.906 0.919 0.972 1.013 1.03 0.922 1.075 0.858 1.202 0.989 1.035 1.242 1.298 1.333 1.277 1.897 1.299 1.705 1.44 1.291 1.013 1.545 1.382 1.398 1.382 1.362 1.856 1.386 1.744 1.45 1.307 1.029 1.568 0.951 0.944 0.997 1.042 1.101 0.936 1.085 0.91 1.148 0.972 1.056
Connecticut 0.877 0.911 0.905 0.989 1.982 0.998 1.286 1.045 1.16 0.757 0.777 0.649 0.681 0.673 0.69 0.691 0.658 0.731 0.759 0.993 0.699 0.777 0.858 0.876 0.897 0.976 1.962 0.994 1.256 1.035 1.15 0.748 0.777 0.876 0.872 0.821 0.895 1.827 0.971 1.255 0.947 1.063 0.7 0.742 0.644 0.655 0.621 0.639 0.659 0.621 0.705 0.682 0.906 0.647 0.742
Maine 3.636 3.314 3.001 2.492 3.863 2.525 2.801 2.814 2.693 1.871 5.123 2.139 1.979 1.956 2.072 2.117 1.679 2.038 1.93 2.166 1.818 2.041 3.326 3.015 2.786 2.223 3.75 2.292 2.598 2.632 2.369 1.677 5.101 3.636 3.314 3.001 2.492 3.863 2.525 2.801 2.814 2.693 1.871 5.123 2.139 1.979 1.956 2.072 2.117 1.679 2.038 1.93 2.166 1.818 2.041
Massachusetts 0.852 1.069 1.093 1.231 1.216 1.115 1.661 1.026 1.027 0.781 0.969 0.748 0.79 0.897 0.889 0.802 0.77 0.853 0.254 0.91 0.745 0.836 0.829 1.025 0.997 1.108 1.159 1.089 1.612 0.988 0.876 0.782 0.954 0.843 1.057 1.08 1.217 1.302 1.224 1.552 1.087 0.991 0.787 0.956 0.743 0.78 0.885 0.88 1.01 0.842 0.918 0.577 0.923 0.746 0.83
New Hampshire 1.616 1.485 1.417 1.095 1.514 1.168 1.889 2.004 1.534 1.13 1.969 0.775 0.766 0.7 0.858 0.913 0.765 1.082 1.146 1.36 1.095 1.363 1.597 1.48 1.383 0.954 1.504 1.168 1.871 1.982 1.49 1.054 1.816 2.021 1.753 1.783 1.368 1.821 1.429 2.173 2.297 1.537 1.384 2.264 0.985 0.989 0.931 1.078 1.085 0.919 1.268 1.295 1.382 1.353 1.582
Rhode Island 0.896 0.782 0.959 1.429 1.966 1.397 1.57 1.185 1.206 1.231 0.762 0.761 0.667 0.808 0.948 0.945 1.024 1.001 0.775 0.973 0.937 0.762 0.862 0.736 0.932 1.394 1.442 1.247 1.394 1.103 1.046 1.231 0.76 0.896 0.782 0.959 1.429 1.966 1.397 1.57 1.185 1.206 1.231 0.762 0.761 0.667 0.808 0.948 0.945 1.024 1.001 0.775 0.973 0.937 0.762
Vermont 3.34 2.25 2.44 1.91 1.63 1.96 3.39 2.609 1.552 1.765 2.521 1.4 1.38 1.95 1.91 1.63 1.49 2.34 1.632 1.552 1.765 1.388 2.06 2.04 2.26 1.75 1.56 1.9 2.86 2.491 1.372 1.531 2.331 2.516 2.352 2.62 2.074 1.898 1.981 2.619 2.413 1.862 1.67 2.195 1.661 1.58 1.967 2.058 1.926 1.465 1.908 1.889 1.8 1.748 1.492
Middle Atlantic 1.34 1.041 1.102 1.156 1.45 1.293 1.466 1.098 1.162 1.047 1.143 0.986 0.89 0.952 0.959 0.96 0.999 1.015 0.927 1.023 0.937 0.922 1.232 0.951 1.017 1.05 1.341 1.193 1.354 1.017 1.084 0.973 1.06 1.099 0.883 0.958 0.999 1.218 1.087 1.237 0.95 0.959 0.849 0.903 0.804 0.736 0.802 0.821 0.82 0.831 0.84 0.781 0.845 0.766 0.747
New Jersey 1.116 0.88 0.876 1.002 1.581 1.193 1.415 0.936 1.158 0.994 0.953 0.944 0.83 0.838 0.886 0.939 0.942 0.962 0.876 0.981 0.833 0.867 0.971 0.783 0.776 0.868 1.438 1.081 1.287 0.881 1.083 0.953 0.914 1.119 0.881 0.875 1 1.583 1.19 1.421 0.934 1.154 0.991 0.953 0.948 0.831 0.838 0.885 0.938 0.942 0.964 0.875 0.98 0.833 0.868
New York 1.668 1.127 1.466 1.311 1.479 1.475 1.518 1.397 1.313 1.173 1.15 1.063 0.963 1.162 1.109 1.077 1.044 1.056 1.02 1.19 1.135 0.96 1.661 1.14 1.489 1.31 1.497 1.487 1.532 1.412 1.235 1.137 1.15 0.91 0.725 0.872 0.854 0.975 0.876 1.005 0.844 0.783 0.671 0.635 0.611 0.586 0.666 0.686 0.683 0.635 0.648 0.62 0.694 0.64 0.552
Pennsylvania 1.393 1.143 1.163 1.227 1.336 1.312 1.489 1.126 1.092 1.02 1.282 0.989 0.914 0.975 0.967 0.939 1.029 1.044 0.935 0.973 0.909 0.952 1.278 1.025 1.059 1.11 1.215 1.187 1.35 0.998 1.011 0.909 1.143 1.353 1.108 1.139 1.2 1.297 1.309 1.431 1.109 1.067 0.994 1.218 0.971 0.878 0.968 0.963 0.928 1.025 1.022 0.938 0.96 0.891 0.919
East North Central 1.159 1.187 1.212 1.264 1.179 1.307 1.199 1.193 1.106 1.201 1.15 0.869 0.808 0.931 0.931 0.909 1 0.974 0.92 0.939 1.036 0.959 1.058 1.113 1.09 1.156 1.071 1.182 1.087 1.103 1.019 1.042 1.069 1.155 1.177 1.204 1.251 1.167 1.297 1.194 1.183 1.104 1.187 1.146 0.868 0.804 0.926 0.928 0.907 1 0.975 0.918 0.939 1.028 0.957
Illinois 0.848 0.833 0.756 0.901 0.925 0.923 0.912 0.921 1.016 1.112 1.124 0.637 0.604 0.643 0.704 0.653 0.762 0.777 0.749 0.83 0.937 0.95 0.815 0.819 0.745 0.876 0.903 0.906 0.887 0.9 0.999 1.072 1.105 0.852 0.835 0.761 0.907 0.924 0.926 0.916 0.926 1.023 1.111 1.126 0.644 0.605 0.645 0.702 0.654 0.763 0.779 0.754 0.831 0.94 0.954
Indiana 1.276 1.414 1.427 1.39 1.31 1.524 1.493 1.313 1.347 1.294 1.258 1.008 0.944 1.136 1.077 1.005 1.171 1.153 1.045 1.064 1.041 1.047 1.14 1.292 1.229 1.141 1.011 1.248 1.232 1.136 1.16 1.142 1.107 1.283 1.447 1.431 1.358 1.289 1.503 1.457 1.27 1.336 1.263 1.28 0.997 0.946 1.123 1.06 0.996 1.17 1.133 1.01 1.048 1.022 1.049
Michigan 1.365 1.543 1.34 1.647 1.375 1.542 1.374 1.413 1.13 1.151 1.23 0.983 0.931 1.016 1.017 1.069 1.162 1.054 0.984 1.004 0.979 0.898 1.252 1.533 1.326 1.615 1.339 1.505 1.346 1.388 1.105 1.119 1.199 1.356 1.512 1.339 1.656 1.384 1.535 1.373 1.414 1.146 1.141 1.213 0.986 0.921 1.015 1.033 1.082 1.162 1.055 0.989 1.012 0.967 0.893
Ohio 1.298 1.252 1.518 1.33 1.356 1.475 1.408 1.351 1.181 1.193 1.197 0.999 0.918 1.122 1.12 1.073 1.136 1.174 1.134 1.058 1.128 1.107 1.124 1.075 1.204 1.099 1.168 1.224 1.16 1.149 0.989 1.021 1.006 1.298 1.252 1.517 1.326 1.356 1.474 1.411 1.354 1.184 1.205 1.209 0.999 0.918 1.121 1.121 1.073 1.136 1.178 1.137 1.065 1.141 1.113
Wisconsin 1.041 0.913 1.101 1.079 0.833 1.122 0.768 0.928 0.864 1.456 0.835 0.726 0.633 0.763 0.695 0.71 0.723 0.649 0.583 0.668 1.174 0.673 1.021 0.881 1.053 1.059 0.774 1.051 0.737 0.886 0.826 0.752 0.812 1.02 0.877 1.043 1.011 0.802 1.095 0.811 0.909 0.841 1.319 0.838 0.729 0.631 0.751 0.692 0.703 0.755 0.702 0.625 0.686 1.099 0.693
West North Central 1.229 1.093 1.107 1.176 1.045 1.15 1.037 1.114 1.204 1.136 1.129 0.879 0.811 0.868 0.843 0.855 0.902 0.878 0.86 0.94 0.998 1.009 1.113 0.973 0.98 1.043 0.985 1.063 0.92 0.995 1.053 1.026 1.026 1.217 1.079 1.083 1.145 1.061 1.132 1.026 1.101 1.142 1.109 1.105 0.883 0.811 0.862 0.839 0.849 0.908 0.882 0.865 0.93 0.964 0.988
Iowa 1.213 0.859 0.978 0.959 1.489 1.128 1.021 1.073 1.166 0.997 1.224 0.811 0.645 0.837 0.812 0.864 0.936 0.933 0.968 0.99 0.963 0.993 1.043 0.741 0.76 0.78 1.341 0.961 0.851 0.851 0.897 0.849 1.06 1.15 0.907 0.888 0.923 1.487 1.08 1.015 1.002 1.049 0.964 1.201 0.887 0.709 0.809 0.805 0.849 0.947 0.938 0.907 0.937 0.924 0.992
Kansas 1.503 1.327 1.321 1.537 0.945 1.361 1.163 1.488 1.423 1.629 1.354 1.005 1.004 1.087 1.064 0.89 1.028 0.986 1.145 1.238 1.306 1.207 1.35 1.171 1.143 1.346 0.91 1.342 1.007 1.248 1.281 1.39 1.217 1.506 1.318 1.321 1.534 0.945 1.368 1.168 1.481 1.408 1.629 1.348 1.003 0.998 1.086 1.059 0.886 1.034 0.988 1.145 1.231 1.312 1.21
Minnesota 1.262 0.973 1.207 1.039 1.037 0.987 1.032 0.953 1.217 0.972 1.016 0.902 0.778 0.846 0.867 0.895 0.793 0.889 0.77 0.861 0.828 0.924 1.144 0.859 1.101 0.94 0.962 0.878 0.907 0.877 1.096 0.903 0.957 1.25 0.973 1.21 1.041 1.036 0.994 1.016 0.946 1.193 0.969 0.995 0.901 0.785 0.856 0.876 0.901 0.805 0.885 0.775 0.855 0.813 0.901
Missouri 1.176 1.324 1.057 1.265 1.002 1.301 0.974 1.16 1.042 1.023 1.079 0.924 0.878 0.879 0.834 0.862 1.019 0.831 0.782 0.776 0.932 0.968 1.07 1.263 0.985 1.147 0.969 1.557 1.108 1.303 0.963 1.276 1.08 1.189 1.315 1.05 1.244 0.997 1.297 0.973 1.201 1.05 1.058 1.078 0.919 0.876 0.876 0.828 0.851 1.018 0.841 0.823 0.799 0.951 0.975
Nebraska 1.244 0.555 0.59 1.165 0.792 0.659 1.099 0.909 0.702 0.662 0.69 0.6 0.478 0.534 0.516 0.552 0.549 0.73 0.677 0.578 0.572 0.603 1.235 0.545 0.573 1.144 0.917 0.655 0.651 0.672 0.648 0.523 0.569 1.232 0.558 0.608 1.154 0.79 0.654 1.085 0.879 0.675 0.732 0.869 0.595 0.48 0.541 0.511 0.556 0.547 0.707 0.676 0.556 0.553 0.699
North Dakota 0.942 1.151 1.425 1.003 1.151 1.006 0.954 1.039 2.063 2.38 1.797 0.881 0.942 1.065 0.956 1 0.832 0.874 0.943 1.932 2.319 1.725 0.681 0.843 1.126 0.643 0.814 0.785 0.693 0.675 1.046 0.713 0.957 0.915 1.055 1.297 0.879 0.972 0.87 0.914 0.966 1.614 2.074 1.419 0.857 0.907 1.036 0.968 0.953 0.819 0.888 0.897 1.852 2.319 1.725
South Dakota 0.815 1.017 1.204 0.979 1.094 1.627 1.108 1.156 1.362 1.121 1.048 0.72 0.894 0.793 0.679 0.896 1.101 0.928 1.064 0.998 0.939 0.964 0.582 0.691 0.89 0.69 0.745 1.114 0.696 0.9 0.88 0.87 0.698 0.815 1.011 1.235 1.009 1.096 1.576 1.084 1.152 1.4 1.133 1.009 0.72 0.894 0.793 0.679 0.896 1.094 0.915 1.049 0.99 0.926 0.949
South Atlantic 1.83 1.341 1.662 1.153 1.464 1.296 1.584 1.768 1.6 1.335 1.42 1.032 1.071 1.097 1.017 1.105 1.085 1.148 1.112 1.195 1.173 1.15 1.671 1.176 1.526 1.052 1.27 1.172 1.469 1.604 1.465 1.18 1.411 1.785 1.344 1.655 1.182 1.475 1.322 1.559 1.742 1.562 1.315 1.385 1.042 1.082 1.105 1.035 1.131 1.101 1.153 1.115 1.199 1.167 1.152
Delaware 0.855 0.842 0.853 0.963 1.51 0.981 1.037 1.131 1.343 1.53 1.414 0.727 0.701 0.767 0.963 0.951 0.864 0.859 0.994 1.147 1.298 1.176 0.857 0.858 0.864 0.953 1.5 0.981 0.98 1.09 1.303 1.369 1.331 0.843 0.83 0.853 0.963 1.51 0.976 1.032 1.128 1.35 1.522 1.415 0.717 0.692 0.767 0.963 0.951 0.86 0.856 0.992 1.156 1.292 1.179
District of Columbia 0.271 0.37 0.302 0.45 0.4 0.59 0.643 0.553 0.82 0.686 0.69 0.246 0.318 0.277 0.41 0.37 0.49 0.538 0.553 0.82 0.686 0.64 0.271 0.37 0.302 0.45 0.4 0.59 0.643 0.55 0.82 0.686 0.69 0.271 0.37 0.302 0.45 0.4 0.59 0.643 0.553 0.82 0.686 0.69 0.246 0.318 0.277 0.41 0.37 0.49 0.538 0.553 0.82 0.686 0.64
Florida 1.784 0.982 1.463 0.901 1.139 0.985 1.112 2.068 1.372 1.096 1.134 0.741 0.78 0.833 0.796 0.893 0.906 0.953 1 1.051 1.041 1.105 1.716 0.929 1.408 0.859 1.058 0.919 1.095 1.993 1.278 1.014 1.5 1.77 1.015 1.48 0.929 1.171 1.012 1.129 2.017 1.357 1.091 1.148 0.762 0.823 0.866 0.834 0.952 0.939 0.972 1.04 1.073 1.06 1.136
Georgia 2.104 1.858 1.668 1.291 1.952 1.361 1.542 2.214 1.525 1.563 1.53 1.244 1.336 1.291 1.241 1.328 1.222 1.248 1.189 1.34 1.279 1.179 1.905 1.765 1.544 1.149 1.746 1.235 1.423 2.064 1.241 1.4 1.29 2.122 1.885 1.695 1.317 1.964 1.382 1.557 2.449 1.526 1.539 1.508 1.264 1.357 1.316 1.268 1.36 1.241 1.257 1.199 1.342 1.265 1.169
Maryland 0.817 0.92 1.16 0.965 0.919 1.049 1.248 0.898 1.099 1.023 1.284 0.686 0.704 0.84 0.79 0.77 0.864 0.939 0.816 1.023 0.972 1.01 0.802 0.882 1.055 0.945 0.882 1.018 1.229 0.862 1.055 0.98 1.219 0.817 0.92 1.156 0.962 0.956 1.049 1.296 0.97 1.092 1.089 1.265 0.686 0.703 0.84 0.79 0.805 0.879 0.965 0.863 1.022 1.044 1.008
North Carolina 1.826 1.526 1.97 1.249 1.718 1.449 2.284 1.381 1.856 1.383 1.512 1.176 1.282 1.238 1.065 1.21 1.114 1.168 1.162 1.149 1.142 1.015 1.678 1.399 1.788 1.152 1.525 1.278 2.041 1.209 1.759 1.227 1.302 1.812 1.506 1.927 1.242 1.697 1.437 2.168 1.334 1.79 1.336 1.471 1.172 1.274 1.236 1.066 1.206 1.109 1.147 1.137 1.138 1.117 1.009
South Carolina 2.368 1.512 1.87 1.158 1.482 1.497 1.77 1.609 2.445 1.49 1.853 1.198 1.289 1.154 1.027 1.129 1.006 1.238 1.125 1.226 1.18 1.132 2.054 1.197 1.571 0.951 1.227 1.285 1.496 1.467 2.175 1.19 1.623 2.365 1.507 1.87 1.161 1.475 1.483 1.746 1.585 2.417 1.454 1.816 1.207 1.291 1.156 1.031 1.124 1.004 1.224 1.115 1.228 1.166 1.122
Virginia 2.238 1.655 2.541 1.981 1.808 2.091 2.605 1.617 1.692 1.548 1.59 1.641 1.522 1.838 1.565 1.608 1.7 1.744 1.443 1.509 1.449 1.445 2.038 1.561 2.444 1.883 1.695 1.943 2.447 1.51 1.349 1.418 1.38 1.627 1.461 1.853 1.576 1.633 1.727 1.817 1.375 1.545 1.429 1.381 1.342 1.283 1.343 1.254 1.323 1.342 1.389 1.176 1.346 1.245 1.229
West Virginia 2.832 2.353 2.737 2.383 2.437 2.801 2.646 2.333 2.351 2.415 2.366 2.287 1.871 2.225 2.096 2.163 2.352 2.352 2.057 2.104 2.15 2.132 2.5 2.1 2.251 2.106 2.113 2.486 2.355 2.027 2.052 2.197 2.089 2.832 2.353 2.737 2.383 2.437 2.801 2.646 2.333 2.351 2.415 2.366 2.287 1.871 2.225 2.096 2.163 2.352 2.352 2.057 2.104 2.15 2.132
East South Central 1.955 2.408 2.505 1.825 1.963 1.899 1.851 1.704 1.676 1.764 1.75 1.553 1.626 1.691 1.417 1.355 1.546 1.502 1.318 1.455 1.476 1.413 1.872 2.332 2.332 1.698 1.825 1.788 1.748 1.577 1.519 1.588 1.547 2.03 2.256 2.291 1.785 2.029 1.807 1.757 1.771 1.661 1.726 1.663 1.493 1.51 1.588 1.374 1.326 1.469 1.428 1.275 1.392 1.392 1.34
Alabama 1.749 2.281 2.28 1.378 3.499 1.783 1.959 1.92 1.759 2.021 2.04 1.29 1.481 1.973 1.161 1.372 1.097 1.488 1.403 1.541 1.625 1.675 1.654 1.972 2.151 1.58 3.364 1.528 1.744 1.754 1.492 1.842 1.97 1.87 1.574 1.448 1.43 2.381 1.41 1.522 1.959 1.571 1.699 1.476 1.037 0.979 1.159 1.08 1.13 1.1 1.174 1.07 1.167 1.244 1.139
Kentucky 1.783 1.859 1.707 1.527 1.354 1.617 1.782 1.336 1.467 1.595 1.664 1.216 1.129 1.278 1.132 1.102 1.389 1.269 1.094 1.273 1.334 1.347 1.58 1.657 1.525 1.322 1.225 1.425 1.56 1.148 1.216 1.311 1.368 1.955 1.903 1.781 1.529 1.351 1.61 1.785 1.347 1.457 1.588 1.65 1.32 1.167 1.3 1.131 1.1 1.383 1.27 1.096 1.261 1.332 1.342
Mississippi 2.482 2.627 2.168 2.29 2.379 2.012 1.733 2.121 1.861 2.148 2.042 1.882 2.113 1.729 1.494 1.407 1.587 1.604 1.486 1.634 1.809 1.371 2.714 2.932 2.254 2.468 2.374 2.154 1.87 2.319 1.918 1.928 1.761 2.555 2.717 2.429 2.367 2.513 2.096 1.762 2.196 1.927 1.969 1.714 1.963 2.142 1.967 1.556 1.487 1.607 1.633 1.571 1.712 1.579 1.238
Tennessee 1.939 2.803 3.326 2.007 2.128 2.134 1.956 1.865 1.806 1.787 1.779 1.752 1.891 1.988 1.69 1.539 1.783 1.704 1.473 1.571 1.504 1.504 1.896 2.773 3.073 1.824 2.005 2.065 1.896 1.753 1.707 1.738 1.668 2 2.812 3.196 2.019 2.14 2.151 1.901 1.806 1.78 1.769 1.803 1.764 1.898 1.949 1.706 1.573 1.794 1.689 1.469 1.566 1.49 1.552
West South Central 2.23 1.928 1.775 2.988 1.918 1.756 1.553 1.781 1.733 1.915 1.534 1.446 1.405 1.498 1.434 1.302 1.361 1.35 1.359 1.386 1.43 1.269 2.129 1.784 1.673 3.019 1.796 1.613 1.452 1.604 1.611 1.773 1.514 2.148 1.843 1.721 2.684 2.306 1.742 1.506 1.757 1.702 1.863 1.477 1.302 1.257 1.345 1.303 1.47 1.223 1.224 1.342 1.369 1.399 1.249
Arkansas 2.137 2.123 2.16 1.674 1.858 1.94 1.721 2.089 2.084 2.05 1.841 1.617 1.578 1.803 1.401 1.437 1.522 1.473 1.48 1.717 1.779 1.585 1.807 1.909 1.886 1.434 1.669 1.676 1.613 1.859 1.867 1.853 2.177 2.128 2.102 2.11 1.658 1.833 1.934 1.771 2.046 2.033 1.982 1.793 1.587 1.54 1.77 1.383 1.434 1.508 1.483 1.455 1.677 1.752 1.551
Louisiana 2.356 1.881 1.992 3.355 3.34 2.133 2.032 2.267 2.082 2.279 2.987 1.661 1.501 1.859 1.781 1.625 1.612 1.819 1.715 1.745 1.811 1.481 2.21 1.759 1.855 3.093 3.124 1.986 1.849 2.032 1.913 2.02 1.596 2.722 2.124 2.077 3.295 3.228 2.166 2.096 2.289 2.118 2.266 2.387 1.751 1.641 1.931 1.848 1.721 1.648 1.84 1.727 1.773 1.805 1.533
Oklahoma 1.584 2.079 1.452 1.519 1.787 1.6 1.449 1.463 1.69 1.87 1.117 1.265 1.134 1.264 1.272 1.199 1.338 1.202 1.184 1.296 1.282 1.085 1.251 1.713 1.169 1.163 1.428 1.271 1.218 1.184 1.352 1.582 0.94 1.731 1.862 1.442 1.4 2.111 1.53 1.331 1.445 1.582 1.782 1.075 1.147 1.143 1.266 1.244 1.101 1.149 1.134 1.151 1.253 1.174 1.027
Texas 2.293 1.889 1.704 3.33 1.636 1.66 1.428 1.691 1.638 1.843 1.494 1.398 1.39 1.399 1.382 1.223 1.281 1.24 1.3 1.295 1.338 1.21 2.27 1.777 1.656 3.525 1.543 1.549 1.348 1.531 1.547 1.733 1.466 2.114 1.763 1.654 2.9 2.222 1.672 1.389 1.667 1.599 1.781 1.441 1.218 1.175 1.203 1.201 1.486 1.118 1.089 1.283 1.27 1.308 1.187
Mountain 1.185 0.966 1.044 1.131 1.017 1.015 1.006 1.117 1.08 1.046 0.97 0.973 0.848 0.905 0.905 0.837 0.901 0.855 0.896 0.901 0.928 0.887 1.109 0.884 0.963 0.981 0.966 0.934 0.902 1.032 1.007 0.991 0.885 1.192 0.989 1.061 1.195 1.026 1.026 1.023 1.126 1.09 1.072 0.96 0.979 0.863 0.916 0.958 0.844 0.908 0.865 0.897 0.908 0.938 0.88
Arizona 0.963 0.951 1.024 1.055 0.797 0.865 0.917 0.867 0.839 0.857 0.844 0.88 0.788 0.871 0.813 0.742 0.748 0.582 0.562 0.756 0.776 0.717 0.935 0.916 0.979 0.988 0.75 0.782 0.823 0.81 0.781 0.789 0.788 0.988 0.984 1.053 1.22 0.818 0.886 0.943 0.885 0.833 0.857 0.84 0.898 0.817 0.897 0.973 0.767 0.775 0.611 0.575 0.751 0.776 0.717
Colorado 1.415 0.925 1.041 1.139 1.032 1.112 0.965 1.214 1.168 1.013 0.974 1.145 0.873 0.923 0.915 0.873 0.882 0.915 0.899 0.935 0.92 0.956 1.335 0.85 0.97 1.005 0.957 1.028 0.873 1.028 1.008 0.938 0.943 1.409 0.915 1.031 1.103 0.998 1.079 0.973 1.193 1.155 1.011 0.927 1.142 0.865 0.917 0.892 0.847 0.858 0.897 0.875 0.924 0.911 0.909
Idaho 1.314 1.071 1.168 1.779 1.589 1.243 1.198 1.697 1.338 1.668 1.266 1.136 0.985 1.091 1.235 1.211 1.144 1.094 1.615 1.16 1.418 1.148 0.959 0.757 0.815 1.222 1.173 0.961 1.096 1.574 1.231 1.455 1.116 1.314 1.071 1.168 1.779 1.589 1.243 1.198 1.693 1.351 1.744 1.287 1.136 0.985 1.091 1.235 1.211 1.144 1.094 1.615 1.179 1.424 1.156
Montana 1.628 1.052 1.398 1.621 1.343 1.345 1.192 1.551 1.259 1.694 1.188 1.163 1.052 1.214 1.348 1.055 1.237 1.182 1.361 1.136 1.446 1.128 1.36 0.852 1.059 1.133 1.143 1.022 0.802 1.528 0.944 1.574 1.104 1.621 1.068 1.376 1.706 1.364 1.327 1.278 1.575 1.262 1.752 1.134 1.161 1.055 1.203 1.341 1.057 1.243 1.183 1.361 1.136 1.446 1.128
Nevada 1.108 0.942 0.984 0.837 0.722 0.815 0.976 0.905 0.835 0.731 0.702 0.658 0.745 0.722 0.669 0.582 0.773 0.813 0.811 0.735 0.557 0.632 1.313 1.131 1.953 0.061 0.558 0.88 1.443 1.033 1.36 1.751   1.108 0.942 0.984 0.837 0.722 0.815 0.976 0.905 0.835 0.731 0.702 0.658 0.745 0.722 0.669 0.582 0.773 0.813 0.811 0.735 0.557 0.632
New Mexico 1.325 1.102 1.089 1.239 0.92 1.113 1.113 1.242 1.34 0.961 0.812 1.106 0.908 0.963 1.04 0.865 1.028 1.098 1.061 1.016 0.905 0.795 1.128 0.966 1 1.074 0.86 0.934 0.899 0.876 0.928 0.389 0.261 1.321 1.242 1.166 1.446 1.01 1.213 1.146 1.297 1.452 1.13 0.846 1.109 0.997 1.005 1.218 0.933 1.098 1.118 1.094 1.117 1.033 0.825
Utah 1.008 0.912 0.858 0.912 1.319 1.001 1.008 1.075 1.313 1.363 1.373 0.956 0.866 0.82 0.857 0.87 0.935 1.005 0.957 0.972 1.223 1.211 1.002 0.919 0.857 0.922 1.316 1.014 1.022 1.079 1.357 1.421 1.139 1.03 0.916 0.887 0.934 1.32 0.998 1.019 1.065 1.31 1.35 1.356 0.966 0.879 0.854 0.873 0.882 0.941 1.017 0.945 0.964 1.219 1.193
Wyoming 0.999 0.935 1.286 1.131 1.892 1.455 1.319 1.685 1.511 1.505 1.565 0.925 0.825 1.146 0.959 1.089 1.37 1.19 1.615 1.356 1.444 1.496 1.018 0.915 1.244 1.102 1.703 1.419 1.148 1.542 1.445 1.258 1.297 0.999 0.994 1.332 1.163 1.836 1.49 1.269 1.662 1.488 1.486 1.501 0.869 0.77 1.074 0.897 1.024 1.285 1.19 1.615 1.356 1.444 1.496
Pacific Contiguous 1.42 1.295 1.306 1.412 1.134 1.226 0.983 1.294 1.052 1.019 1.04 1.133 1.035 1.091 1.016 0.875 0.847 0.845 0.887 0.898 0.809 0.878 1.41 1.215 1.224 0.979 0.696 0.908 0.612 0.886 1.033 0.994 1.023 1.413 1.284 1.29 1.396 1.119 1.223 0.993 1.293 1.056 1.047 1.033 1.117 1.027 1.078 1.008 0.873 0.85 0.846 0.9 0.9 0.822 0.883
California 1.353 1.409 1.259 1.315 1.093 1.259 0.958 1.275 1.014 0.916 0.914 1.181 1.097 1.146 1.042 0.883 0.872 0.857 0.884 0.923 0.816 0.873 1.429 1.393 1.221 0.8 0.443 0.869 0.504 0.771 1.022 0.933 0.94 1.345 1.397 1.248 1.309 1.077 1.261 0.955 1.284 1.027 0.925 0.911 1.154 1.086 1.127 1.033 0.879 0.876 0.854 0.894 0.938 0.833 0.873
Oregon 1.324 0.808 1.311 1.604 1.13 0.989 0.9 1.344 1.105 1.051 1.346 0.824 0.738 0.804 0.758 0.749 0.747 0.795 0.859 0.778 0.711 0.88 1.197 0.753 1.215 1.473 1.075 0.919 0.842 1.302 1.029 1.026 1.061 1.346 0.825 1.288 1.571 1.142 0.996 0.916 1.318 1.091 1.006 1.271 0.857 0.751 0.813 0.764 0.753 0.745 0.804 0.867 0.776 0.717 0.869
Washington 1.774 1.05 1.52 1.756 1.327 1.205 1.168 1.367 1.243 1.702 1.673 1.085 0.915 0.99 1.035 0.91 0.783 0.817 0.925 0.83 0.842 0.912 1.445 0.725 1.24 1.45 1.138 1.066 0.989 1.229 1.098 1.342 1.502 1.752 1.025 1.481 1.692 1.302 1.174 1.211 1.321 1.172 1.701 1.513 1.087 0.908 0.991 1.024 0.906 0.779 0.827 0.946 0.782 0.826 0.947
Pacific Noncontiguous 2.55 3.374 4.959 2.372 1.494 1.744 2.26 1.713 1.67 2.057 2.259 1.92 2.366 3.406 1.723 1.436 1.307 1.954 1.45 1.309 1.481 1.57 1.524 2.503 3.431 1.778 1.129 1.443 1.781 1.625 1.487 2.55 2.722 2.607 2.127 2.341 1.799 1.581 2.102 2.389 1.955 2.028 2.873 2.344 2.066 1.595 1.745 1.335 1.436 1.307 1.954 1.45 1.556 1.663 1.787
Alaska 2.321 3.26 4.959 2.372 1.968 1.92 2.931 1.574 2.111 2.319 2.259 1.862 2.366 3.406 1.723 2.218 1.588 2.603 1.826 1.858 1.531 1.57 1.84 2.503 3.431 1.778 1.501 1.578 2.345 1.548 2.444 2.55 2.722 2.591 2.701 3.523 2.132 2.195 2.192 3.137 1.709 2.261 2.555 2.484 1.862 2.366 3.406 1.723 2.218 1.588 2.603 1.826 1.858 1.531 1.57
Hawaii 4.39 3.922     1.207 1.64 1.867 1.794 1.3 1.911   2.39       1.112 1.192 1.688 1.295 1.002 1.454   0       0.975 1.387 1.549 1.657 1.049     2.616 1.788 1.647 1.6 1.217 2.05 1.959 2.092 1.897 2.986 2.307 2.18 1.398 1.195 1.199 1.112 1.192 1.688 1.295 1.444 1.711 1.845
U.S. Total 1.531 1.348 1.426 1.436 1.385 1.332 1.34 1.42 1.327 1.275 1.257 1.065 1.022 1.09 1.039 1.013 1.04 1.051 1.023 1.082 1.073 1.038 1.431 1.242 1.315 1.294 1.238 1.189 1.193 1.254 1.23 1.163 1.202 1.521 1.333 1.405 1.425 1.44 1.325 1.325 1.394 1.292 1.246 1.22 1.043 0.999 1.064 1.025 1.037 1.017 1.028 1.007 1.062 1.046 1.019

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.