Table 11.5 SAIFI Values (Times Per Year) of U.S. Distribution System by State, 2013 - 2022

  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		 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
New England 1.4 1.567 1.056 1.411 1.488 1.785 1.359 1.98 1.354 1.341 1.05 1.035 0.989 1.202 0.858 1.075 0.922 1.03 1.013 0.972 1.304 1.545 1.013 1.291 1.44 1.705 1.299 1.897 1.277 1.333 1.466 1.568 1.029 1.307 1.45 1.744 1.386 1.856 1.362 1.382 1.103 1.056 0.972 1.148 0.91 1.085 0.936 1.101 1.042 0.997
Connecticut 0.931 0.777 0.757 1.16 1.045 1.286 0.998 1.982 0.989 0.905 0.917 0.777 0.699 0.993 0.759 0.731 0.658 0.691 0.69 0.673 0.915 0.777 0.748 1.15 1.035 1.256 0.994 1.962 0.976 0.897 0.931 0.742 0.7 1.063 0.947 1.255 0.971 1.827 0.895 0.821 0.904 0.742 0.647 0.906 0.682 0.705 0.621 0.659 0.639 0.621
Maine 2.894 5.123 1.871 2.693 2.814 2.801 2.525 3.863 2.492 3.001 1.976 2.041 1.818 2.166 1.93 2.038 1.679 2.117 2.072 1.956 2.611 5.101 1.677 2.369 2.632 2.598 2.292 3.75 2.223 2.786 2.894 5.123 1.871 2.693 2.814 2.801 2.525 3.863 2.492 3.001 1.976 2.041 1.818 2.166 1.93 2.038 1.679 2.117 2.072 1.956
Massachusetts 1.14 0.969 0.781 1.027 1.026 1.661 1.115 1.216 1.231 1.093 0.911 0.836 0.745 0.91 0.254 0.853 0.77 0.802 0.889 0.897 1.135 0.954 0.782 0.876 0.988 1.612 1.089 1.159 1.108 0.997 1.129 0.956 0.787 0.991 1.087 1.552 1.224 1.302 1.217 1.08 0.906 0.83 0.746 0.923 0.577 0.918 0.842 1.01 0.88 0.885
New Hampshire 1.98 1.969 1.13 1.534 2.004 1.889 1.168 1.514 1.095 1.417 1.057 1.363 1.095 1.36 1.146 1.082 0.765 0.913 0.858 0.7 1.057 1.816 1.054 1.49 1.982 1.871 1.168 1.504 0.954 1.383 2.173 2.264 1.384 1.537 2.297 2.173 1.429 1.821 1.368 1.783 1.301 1.582 1.353 1.382 1.295 1.268 0.919 1.085 1.078 0.931
Rhode Island 1.26 0.762 1.231 1.206 1.185 1.57 1.397 1.966 1.429 0.959 0.72 0.762 0.937 0.973 0.775 1.001 1.024 0.945 0.948 0.808 1.17 0.76 1.231 1.046 1.103 1.394 1.247 1.442 1.394 0.932 1.26 0.762 1.231 1.206 1.185 1.57 1.397 1.966 1.429 0.959 0.72 0.762 0.937 0.973 0.775 1.001 1.024 0.945 0.948 0.808
Vermont 2.838 2.521 1.765 1.552 2.609 3.39 1.96 1.63 1.91 2.44 1.914 1.388 1.765 1.552 1.632 2.34 1.49 1.63 1.91 1.95 2.838 2.331 1.531 1.372 2.491 2.86 1.9 1.56 1.75 2.26 2.41 2.195 1.67 1.862 2.413 2.619 1.981 1.898 2.074 2.62 1.865 1.492 1.748 1.8 1.889 1.908 1.465 1.926 2.058 1.967
Middle Atlantic 1.135 1.143 1.047 1.162 1.098 1.466 1.293 1.45 1.156 1.102 0.994 0.922 0.937 1.023 0.927 1.015 0.999 0.96 0.959 0.952 1.036 1.06 0.973 1.084 1.017 1.354 1.193 1.341 1.05 1.017 0.885 0.903 0.849 0.959 0.95 1.237 1.087 1.218 0.999 0.958 0.765 0.747 0.766 0.845 0.781 0.84 0.831 0.82 0.821 0.802
New Jersey 1.358 0.953 0.994 1.158 0.936 1.415 1.193 1.581 1.002 0.876 1.228 0.867 0.833 0.981 0.876 0.962 0.942 0.939 0.886 0.838 1.182 0.914 0.953 1.083 0.881 1.287 1.081 1.438 0.868 0.776 1.333 0.953 0.991 1.154 0.934 1.421 1.19 1.583 1 0.875 1.204 0.868 0.833 0.98 0.875 0.964 0.942 0.938 0.885 0.838
New York 1.308 1.15 1.173 1.313 1.397 1.518 1.475 1.479 1.311 1.466 0.949 0.96 1.135 1.19 1.02 1.056 1.044 1.077 1.109 1.162 1.317 1.15 1.137 1.235 1.412 1.532 1.487 1.497 1.31 1.489 0.723 0.635 0.671 0.783 0.844 1.005 0.876 0.975 0.854 0.872 0.57 0.552 0.64 0.694 0.62 0.648 0.635 0.683 0.686 0.666
Pennsylvania 1 1.282 1.02 1.092 1.126 1.489 1.312 1.336 1.227 1.163 0.936 0.952 0.909 0.973 0.935 1.044 1.029 0.939 0.967 0.975 0.903 1.143 0.909 1.011 0.998 1.35 1.187 1.215 1.11 1.059 0.974 1.218 0.994 1.067 1.109 1.431 1.309 1.297 1.2 1.139 0.902 0.919 0.891 0.96 0.938 1.022 1.025 0.928 0.963 0.968
East North Central 1.203 1.15 1.201 1.106 1.193 1.199 1.307 1.179 1.264 1.212 0.89 0.959 1.036 0.939 0.92 0.974 1 0.909 0.931 0.931 1.134 1.069 1.042 1.019 1.103 1.087 1.182 1.071 1.156 1.09 1.186 1.146 1.187 1.104 1.183 1.194 1.297 1.167 1.251 1.204 0.885 0.957 1.028 0.939 0.918 0.975 1 0.907 0.928 0.926
Illinois 1.093 1.124 1.112 1.016 0.921 0.912 0.923 0.925 0.901 0.756 0.86 0.95 0.937 0.83 0.749 0.777 0.762 0.653 0.704 0.643 1.09 1.105 1.072 0.999 0.9 0.887 0.906 0.903 0.876 0.745 1.1 1.126 1.111 1.023 0.926 0.916 0.926 0.924 0.907 0.761 0.866 0.954 0.94 0.831 0.754 0.779 0.763 0.654 0.702 0.645
Indiana 1.206 1.258 1.294 1.347 1.313 1.493 1.524 1.31 1.39 1.427 0.962 1.047 1.041 1.064 1.045 1.153 1.171 1.005 1.077 1.136 0.925 1.107 1.142 1.16 1.136 1.232 1.248 1.011 1.141 1.229 1.18 1.28 1.263 1.336 1.27 1.457 1.503 1.289 1.358 1.431 0.944 1.049 1.022 1.048 1.01 1.133 1.17 0.996 1.06 1.123
Michigan 1.531 1.23 1.151 1.13 1.413 1.374 1.542 1.375 1.647 1.34 0.913 0.898 0.979 1.004 0.984 1.054 1.162 1.069 1.017 1.016 1.504 1.199 1.119 1.105 1.388 1.346 1.505 1.339 1.615 1.326 1.523 1.213 1.141 1.146 1.414 1.373 1.535 1.384 1.656 1.339 0.915 0.893 0.967 1.012 0.989 1.055 1.162 1.082 1.033 1.015
Ohio 1.168 1.197 1.193 1.181 1.351 1.408 1.475 1.356 1.33 1.518 0.945 1.107 1.128 1.058 1.134 1.174 1.136 1.073 1.12 1.122 1.017 1.006 1.021 0.989 1.149 1.16 1.224 1.168 1.099 1.204 1.176 1.209 1.205 1.184 1.354 1.411 1.474 1.356 1.326 1.517 0.952 1.113 1.141 1.065 1.137 1.178 1.136 1.073 1.121 1.121
Wisconsin 0.869 0.835 1.456 0.864 0.928 0.768 1.122 0.833 1.079 1.101 0.715 0.673 1.174 0.668 0.583 0.649 0.723 0.71 0.695 0.763 0.837 0.812 0.752 0.826 0.886 0.737 1.051 0.774 1.059 1.053 0.816 0.838 1.319 0.841 0.909 0.811 1.095 0.802 1.011 1.043 0.695 0.693 1.099 0.686 0.625 0.702 0.755 0.703 0.692 0.751
West North Central 1.258 1.129 1.136 1.204 1.114 1.037 1.15 1.045 1.176 1.107 0.953 1.009 0.998 0.94 0.86 0.878 0.902 0.855 0.843 0.868 1.15 1.026 1.026 1.053 0.995 0.92 1.063 0.985 1.043 0.98 1.255 1.105 1.109 1.142 1.101 1.026 1.132 1.061 1.145 1.083 0.975 0.988 0.964 0.93 0.865 0.882 0.908 0.849 0.839 0.862
Iowa 1.068 1.224 0.997 1.166 1.073 1.021 1.128 1.489 0.959 0.978 0.946 0.993 0.963 0.99 0.968 0.933 0.936 0.864 0.812 0.837 0.918 1.06 0.849 0.897 0.851 0.851 0.961 1.341 0.78 0.76 0.96 1.201 0.964 1.049 1.002 1.015 1.08 1.487 0.923 0.888 0.844 0.992 0.924 0.937 0.907 0.938 0.947 0.849 0.805 0.809
Kansas 1.584 1.354 1.629 1.423 1.488 1.163 1.361 0.945 1.537 1.321 1.25 1.207 1.306 1.238 1.145 0.986 1.028 0.89 1.064 1.087 1.314 1.217 1.39 1.281 1.248 1.007 1.342 0.91 1.346 1.143 1.571 1.348 1.629 1.408 1.481 1.168 1.368 0.945 1.534 1.321 1.248 1.21 1.312 1.231 1.145 0.988 1.034 0.886 1.059 1.086
Minnesota 1.247 1.016 0.972 1.217 0.953 1.032 0.987 1.037 1.039 1.207 0.875 0.924 0.828 0.861 0.77 0.889 0.793 0.895 0.867 0.846 1.176 0.957 0.903 1.096 0.877 0.907 0.878 0.962 0.94 1.101 1.215 0.995 0.969 1.193 0.946 1.016 0.994 1.036 1.041 1.21 0.859 0.901 0.813 0.855 0.775 0.885 0.805 0.901 0.876 0.856
Missouri 1.086 1.079 1.023 1.042 1.16 0.974 1.301 1.002 1.265 1.057 0.813 0.968 0.932 0.776 0.782 0.831 1.019 0.862 0.834 0.879 1.123 1.08 1.276 0.963 1.303 1.108 1.557 0.969 1.147 0.985 1.134 1.078 1.058 1.05 1.201 0.973 1.297 0.997 1.244 1.05 0.859 0.975 0.951 0.799 0.823 0.841 1.018 0.851 0.828 0.876
Nebraska 0.774 0.69 0.662 0.702 0.909 1.099 0.659 0.792 1.165 0.59 0.661 0.603 0.572 0.578 0.677 0.73 0.549 0.552 0.516 0.534 0.077 0.569 0.523 0.648 0.672 0.651 0.655 0.917 1.144 0.573 0.838 0.869 0.732 0.675 0.879 1.085 0.654 0.79 1.154 0.608 0.577 0.699 0.553 0.556 0.676 0.707 0.547 0.556 0.511 0.541
North Dakota 1.601 1.797 2.38 2.063 1.039 0.954 1.006 1.151 1.003 1.425 1.568 1.725 2.319 1.932 0.943 0.874 0.832 1 0.956 1.065 0.855 0.957 0.713 1.046 0.675 0.693 0.785 0.814 0.643 1.126 2.757 1.419 2.074 1.614 0.966 0.914 0.87 0.972 0.879 1.297 3.405 1.725 2.319 1.852 0.897 0.888 0.819 0.953 0.968 1.036
South Dakota 1.88 1.048 1.121 1.362 1.156 1.108 1.627 1.094 0.979 1.204 1.037 0.964 0.939 0.998 1.064 0.928 1.101 0.896 0.679 0.793 1.44 0.698 0.87 0.88 0.9 0.696 1.114 0.745 0.69 0.89 1.867 1.009 1.133 1.4 1.152 1.084 1.576 1.096 1.009 1.235 1.054 0.949 0.926 0.99 1.049 0.915 1.094 0.896 0.679 0.793
South Atlantic 1.249 1.42 1.335 1.6 1.768 1.584 1.296 1.464 1.153 1.662 1.075 1.15 1.173 1.195 1.112 1.148 1.085 1.105 1.017 1.097 1.114 1.411 1.18 1.465 1.604 1.469 1.172 1.27 1.052 1.526 1.293 1.385 1.315 1.562 1.742 1.559 1.322 1.475 1.182 1.655 1.083 1.152 1.167 1.199 1.115 1.153 1.101 1.131 1.035 1.105
Delaware 1.464 1.414 1.53 1.343 1.131 1.037 0.981 1.51 0.963 0.853 1.283 1.176 1.298 1.147 0.994 0.859 0.864 0.951 0.963 0.767 1.376 1.331 1.369 1.303 1.09 0.98 0.981 1.5 0.953 0.864 1.46 1.415 1.522 1.35 1.128 1.032 0.976 1.51 0.963 0.853 1.28 1.179 1.292 1.156 0.992 0.856 0.86 0.951 0.963 0.767
District of Columbia 0.88 0.69 0.686 0.82 0.553 0.643 0.59 0.4 0.45 0.302 0.88 0.64 0.686 0.82 0.553 0.538 0.49 0.37 0.41 0.277 0.76 0.69 0.686 0.82 0.55 0.643 0.59 0.4 0.45 0.302 0.88 0.69 0.686 0.82 0.553 0.643 0.59 0.4 0.45 0.302 0.88 0.64 0.686 0.82 0.553 0.538 0.49 0.37 0.41 0.277
Florida 0.965 1.134 1.096 1.372 2.068 1.112 0.985 1.139 0.901 1.463 0.933 1.105 1.041 1.051 1 0.953 0.906 0.893 0.796 0.833 0.936 1.5 1.014 1.278 1.993 1.095 0.919 1.058 0.859 1.408 1.126 1.148 1.091 1.357 2.017 1.129 1.012 1.171 0.929 1.48 1.017 1.136 1.06 1.073 1.04 0.972 0.939 0.952 0.834 0.866
Georgia 1.266 1.53 1.563 1.525 2.214 1.542 1.361 1.952 1.291 1.668 1.137 1.179 1.279 1.34 1.189 1.248 1.222 1.328 1.241 1.291 0.774 1.29 1.4 1.241 2.064 1.423 1.235 1.746 1.149 1.544 1.327 1.508 1.539 1.526 2.449 1.557 1.382 1.964 1.317 1.695 1.152 1.169 1.265 1.342 1.199 1.257 1.241 1.36 1.268 1.316
Maryland 1.14 1.284 1.023 1.099 0.898 1.248 1.049 0.919 0.965 1.16 1.044 1.01 0.972 1.023 0.816 0.939 0.864 0.77 0.79 0.84 1.002 1.219 0.98 1.055 0.862 1.229 1.018 0.882 0.945 1.055 1.123 1.265 1.089 1.092 0.97 1.296 1.049 0.956 0.962 1.156 1.036 1.008 1.044 1.022 0.863 0.965 0.879 0.805 0.79 0.84
North Carolina 1.351 1.512 1.383 1.856 1.381 2.284 1.449 1.718 1.249 1.97 1.024 1.015 1.142 1.149 1.162 1.168 1.114 1.21 1.065 1.238 1.255 1.302 1.227 1.759 1.209 2.041 1.278 1.525 1.152 1.788 1.341 1.471 1.336 1.79 1.334 2.168 1.437 1.697 1.242 1.927 1.014 1.009 1.117 1.138 1.137 1.147 1.109 1.206 1.066 1.236
South Carolina 1.058 1.853 1.49 2.445 1.609 1.77 1.497 1.482 1.158 1.87 0.989 1.132 1.18 1.226 1.125 1.238 1.006 1.129 1.027 1.154 0.99 1.623 1.19 2.175 1.467 1.496 1.285 1.227 0.951 1.571 1.045 1.816 1.454 2.417 1.585 1.746 1.483 1.475 1.161 1.87 0.982 1.122 1.166 1.228 1.115 1.224 1.004 1.124 1.031 1.156
Virginia 2.078 1.59 1.548 1.692 1.617 2.605 2.091 1.808 1.981 2.541 1.636 1.445 1.449 1.509 1.443 1.744 1.7 1.608 1.565 1.838 1.905 1.38 1.418 1.349 1.51 2.447 1.943 1.695 1.883 2.444 1.615 1.381 1.429 1.545 1.375 1.817 1.727 1.633 1.576 1.853 1.171 1.229 1.245 1.346 1.176 1.389 1.342 1.323 1.254 1.343
West Virginia 2.294 2.366 2.415 2.351 2.333 2.646 2.801 2.437 2.383 2.737 1.709 2.132 2.15 2.104 2.057 2.352 2.352 2.163 2.096 2.225 1.731 2.089 2.197 2.052 2.027 2.355 2.486 2.113 2.106 2.251 2.294 2.366 2.415 2.351 2.333 2.646 2.801 2.437 2.383 2.737 1.709 2.132 2.15 2.104 2.057 2.352 2.352 2.163 2.096 2.225
East South Central 1.604 1.75 1.764 1.676 1.704 1.851 1.899 1.963 1.825 2.505 1.403 1.413 1.476 1.455 1.318 1.502 1.546 1.355 1.417 1.691 1.403 1.547 1.588 1.519 1.577 1.748 1.788 1.825 1.698 2.332 1.591 1.663 1.726 1.661 1.771 1.757 1.807 2.029 1.785 2.291 1.353 1.34 1.392 1.392 1.275 1.428 1.469 1.326 1.374 1.588
Alabama 1.973 2.04 2.021 1.759 1.92 1.959 1.783 3.499 1.378 2.28 1.666 1.675 1.625 1.541 1.403 1.488 1.097 1.372 1.161 1.973 1.735 1.97 1.842 1.492 1.754 1.744 1.528 3.364 1.58 2.151 1.447 1.476 1.699 1.571 1.959 1.522 1.41 2.381 1.43 1.448 1.22 1.139 1.244 1.167 1.07 1.174 1.1 1.13 1.08 1.159
Kentucky 1.508 1.664 1.595 1.467 1.336 1.782 1.617 1.354 1.527 1.707 1.309 1.347 1.334 1.273 1.094 1.269 1.389 1.102 1.132 1.278 1.256 1.368 1.311 1.216 1.148 1.56 1.425 1.225 1.322 1.525 1.502 1.65 1.588 1.457 1.347 1.785 1.61 1.351 1.529 1.781 1.305 1.342 1.332 1.261 1.096 1.27 1.383 1.1 1.131 1.3
Mississippi 1.729 2.042 2.148 1.861 2.121 1.733 2.012 2.379 2.29 2.168 1.386 1.371 1.809 1.634 1.486 1.604 1.587 1.407 1.494 1.729 1.55 1.761 1.928 1.918 2.319 1.87 2.154 2.374 2.468 2.254 1.708 1.714 1.969 1.927 2.196 1.762 2.096 2.513 2.367 2.429 1.316 1.238 1.579 1.712 1.571 1.633 1.607 1.487 1.556 1.967
Tennessee 1.681 1.779 1.787 1.806 1.865 1.956 2.134 2.128 2.007 3.326 1.572 1.504 1.504 1.571 1.473 1.704 1.783 1.539 1.69 1.988 1.524 1.668 1.738 1.707 1.753 1.896 2.065 2.005 1.824 3.073 1.767 1.803 1.769 1.78 1.806 1.901 2.151 2.14 2.019 3.196 1.526 1.552 1.49 1.566 1.469 1.689 1.794 1.573 1.706 1.949
West South Central 1.526 1.534 1.915 1.733 1.781 1.553 1.756 1.918 2.988 1.775 1.285 1.269 1.43 1.386 1.359 1.35 1.361 1.302 1.434 1.498 1.453 1.514 1.773 1.611 1.604 1.452 1.613 1.796 3.019 1.673 1.598 1.477 1.863 1.702 1.757 1.506 1.742 2.306 2.684 1.721 1.272 1.249 1.399 1.369 1.342 1.224 1.223 1.47 1.303 1.345
Arkansas 1.77 1.841 2.05 2.084 2.089 1.721 1.94 1.858 1.674 2.16 1.579 1.585 1.779 1.717 1.48 1.473 1.522 1.437 1.401 1.803 1.792 2.177 1.853 1.867 1.859 1.613 1.676 1.669 1.434 1.886 1.796 1.793 1.982 2.033 2.046 1.771 1.934 1.833 1.658 2.11 1.567 1.551 1.752 1.677 1.455 1.483 1.508 1.434 1.383 1.77
Louisiana 2.814 2.987 2.279 2.082 2.267 2.032 2.133 3.34 3.355 1.992 1.247 1.481 1.811 1.745 1.715 1.819 1.612 1.625 1.781 1.859 1.468 1.596 2.02 1.913 2.032 1.849 1.986 3.124 3.093 1.855 2.54 2.387 2.266 2.118 2.289 2.096 2.166 3.228 3.295 2.077 1.449 1.533 1.805 1.773 1.727 1.84 1.648 1.721 1.848 1.931
Oklahoma 1.727 1.117 1.87 1.69 1.463 1.449 1.6 1.787 1.519 1.452 1.222 1.085 1.282 1.296 1.184 1.202 1.338 1.199 1.272 1.264 1.416 0.94 1.582 1.352 1.184 1.218 1.271 1.428 1.163 1.169 1.547 1.075 1.782 1.582 1.445 1.331 1.53 2.111 1.4 1.442 1.007 1.027 1.174 1.253 1.151 1.134 1.149 1.101 1.244 1.266
Texas 1.426 1.494 1.843 1.638 1.691 1.428 1.66 1.636 3.33 1.704 1.253 1.21 1.338 1.295 1.3 1.24 1.281 1.223 1.382 1.399 1.397 1.466 1.733 1.547 1.531 1.348 1.549 1.543 3.525 1.656 1.537 1.441 1.781 1.599 1.667 1.389 1.672 2.222 2.9 1.654 1.241 1.187 1.308 1.27 1.283 1.089 1.118 1.486 1.201 1.203
Mountain 1.057 0.97 1.046 1.08 1.117 1.006 1.015 1.017 1.131 1.044 0.964 0.887 0.928 0.901 0.896 0.855 0.901 0.837 0.905 0.905 0.989 0.885 0.991 1.007 1.032 0.902 0.934 0.966 0.981 0.963 1.043 0.96 1.072 1.09 1.126 1.023 1.026 1.026 1.195 1.061 0.949 0.88 0.938 0.908 0.897 0.865 0.908 0.844 0.958 0.916
Arizona 0.816 0.844 0.857 0.839 0.867 0.917 0.865 0.797 1.055 1.024 0.762 0.717 0.776 0.756 0.562 0.582 0.748 0.742 0.813 0.871 0.708 0.788 0.789 0.781 0.81 0.823 0.782 0.75 0.988 0.979 0.824 0.84 0.857 0.833 0.885 0.943 0.886 0.818 1.22 1.053 0.762 0.717 0.776 0.751 0.575 0.611 0.775 0.767 0.973 0.897
Colorado 1.183 0.974 1.013 1.168 1.214 0.965 1.112 1.032 1.139 1.041 1.094 0.956 0.92 0.935 0.899 0.915 0.882 0.873 0.915 0.923 1.004 0.943 0.938 1.008 1.028 0.873 1.028 0.957 1.005 0.97 1.087 0.927 1.011 1.155 1.193 0.973 1.079 0.998 1.103 1.031 0.996 0.909 0.911 0.924 0.875 0.897 0.858 0.847 0.892 0.917
Idaho 1.642 1.266 1.668 1.338 1.697 1.198 1.243 1.589 1.779 1.168 1.395 1.148 1.418 1.16 1.615 1.094 1.144 1.211 1.235 1.091 1.376 1.116 1.455 1.231 1.574 1.096 0.961 1.173 1.222 0.815 1.644 1.287 1.744 1.351 1.693 1.198 1.243 1.589 1.779 1.168 1.395 1.156 1.424 1.179 1.615 1.094 1.144 1.211 1.235 1.091
Montana 1.433 1.188 1.694 1.259 1.551 1.192 1.345 1.343 1.621 1.398 1.274 1.128 1.446 1.136 1.361 1.182 1.237 1.055 1.348 1.214 1.375 1.104 1.574 0.944 1.528 0.802 1.022 1.143 1.133 1.059 1.363 1.134 1.752 1.262 1.575 1.278 1.327 1.364 1.706 1.376 1.274 1.128 1.446 1.136 1.361 1.183 1.243 1.057 1.341 1.203
Nevada 0.617 0.702 0.731 0.835 0.905 0.976 0.815 0.722 0.837 0.984 0.58 0.632 0.557 0.735 0.811 0.813 0.773 0.582 0.669 0.722 1   1.751 1.36 1.033 1.443 0.88 0.558 0.061 1.953 0.617 0.702 0.731 0.835 0.905 0.976 0.815 0.722 0.837 0.984 0.58 0.632 0.557 0.735 0.811 0.813 0.773 0.582 0.669 0.722
New Mexico 0.975 0.812 0.961 1.34 1.242 1.113 1.113 0.92 1.239 1.089 0.897 0.795 0.905 1.016 1.061 1.098 1.028 0.865 1.04 0.963 0.797 0.261 0.389 0.928 0.876 0.899 0.934 0.86 1.074 1 1.04 0.846 1.13 1.452 1.297 1.146 1.213 1.01 1.446 1.166 0.924 0.825 1.033 1.117 1.094 1.118 1.098 0.933 1.218 1.005
Utah 1.461 1.373 1.363 1.313 1.075 1.008 1.001 1.319 0.912 0.858 1.313 1.211 1.223 0.972 0.957 1.005 0.935 0.87 0.857 0.82 1.237 1.139 1.421 1.357 1.079 1.022 1.014 1.316 0.922 0.857 1.352 1.356 1.35 1.31 1.065 1.019 0.998 1.32 0.934 0.887 1.289 1.193 1.219 0.964 0.945 1.017 0.941 0.882 0.873 0.854
Wyoming 1.852 1.565 1.505 1.511 1.685 1.319 1.455 1.892 1.131 1.286 1.574 1.496 1.444 1.356 1.615 1.19 1.37 1.089 0.959 1.146 1.522 1.297 1.258 1.445 1.542 1.148 1.419 1.703 1.102 1.244 1.814 1.501 1.486 1.488 1.662 1.269 1.49 1.836 1.163 1.332 1.574 1.496 1.444 1.356 1.615 1.19 1.285 1.024 0.897 1.074
Pacific Contiguous 0.865 1.04 1.019 1.052 1.294 0.983 1.226 1.134 1.412 1.306 0.792 0.878 0.809 0.898 0.887 0.845 0.847 0.875 1.016 1.091 0.833 1.023 0.994 1.033 0.886 0.612 0.908 0.696 0.979 1.224 0.857 1.033 1.047 1.056 1.293 0.993 1.223 1.119 1.396 1.29 0.785 0.883 0.822 0.9 0.9 0.846 0.85 0.873 1.008 1.078
California 0.839 0.914 0.916 1.014 1.275 0.958 1.259 1.093 1.315 1.259 0.8 0.873 0.816 0.923 0.884 0.857 0.872 0.883 1.042 1.146 0.847 0.94 0.933 1.022 0.771 0.504 0.869 0.443 0.8 1.221 0.833 0.911 0.925 1.027 1.284 0.955 1.261 1.077 1.309 1.248 0.798 0.873 0.833 0.938 0.894 0.854 0.876 0.879 1.033 1.127
Oregon 0.817 1.346 1.051 1.105 1.344 0.9 0.989 1.13 1.604 1.311 0.661 0.88 0.711 0.778 0.859 0.795 0.747 0.749 0.758 0.804 0.677 1.061 1.026 1.029 1.302 0.842 0.919 1.075 1.473 1.215 0.792 1.271 1.006 1.091 1.318 0.916 0.996 1.142 1.571 1.288 0.663 0.869 0.717 0.776 0.867 0.804 0.745 0.753 0.764 0.813
Washington 1.085 1.673 1.702 1.243 1.367 1.168 1.205 1.327 1.756 1.52 0.846 0.912 0.842 0.83 0.925 0.817 0.783 0.91 1.035 0.99 0.913 1.502 1.342 1.098 1.229 0.989 1.066 1.138 1.45 1.24 1.025 1.513 1.701 1.172 1.321 1.211 1.174 1.302 1.692 1.481 0.786 0.947 0.826 0.782 0.946 0.827 0.779 0.906 1.024 0.991
Pacific Noncontiguous 2.298 2.259 2.057 1.67 1.713 2.26 1.744 1.494 2.372 4.959 1.432 1.57 1.481 1.309 1.45 1.954 1.307 1.436 1.723 3.406 2.323 2.722 2.55 1.487 1.625 1.781 1.443 1.129 1.778 3.431 2.175 2.344 2.873 2.028 1.955 2.389 2.102 1.581 1.799 2.341 1.572 1.787 1.663 1.556 1.45 1.954 1.307 1.436 1.335 1.745
Alaska 2.298 2.259 2.319 2.111 1.574 2.931 1.92 1.968 2.372 4.959 1.432 1.57 1.531 1.858 1.826 2.603 1.588 2.218 1.723 3.406 2.323 2.722 2.55 2.444 1.548 2.345 1.578 1.501 1.778 3.431 2.302 2.484 2.555 2.261 1.709 3.137 2.192 2.195 2.132 3.523 1.432 1.57 1.531 1.858 1.826 2.603 1.588 2.218 1.723 3.406
Hawaii     1.911 1.3 1.794 1.867 1.64 1.207         1.454 1.002 1.295 1.688 1.192 1.112           1.049 1.657 1.549 1.387 0.975     2.13 2.307 2.986 1.897 2.092 1.959 2.05 1.217 1.6 1.647 1.605 1.845 1.711 1.444 1.295 1.688 1.192 1.112 1.199 1.195
U.S. Total 1.187 1.257 1.275 1.327 1.42 1.34 1.332 1.385 1.436 1.426 0.994 1.038 1.073 1.082 1.023 1.051 1.04 1.013 1.039 1.09 1.113 1.202 1.163 1.23 1.254 1.193 1.189 1.238 1.294 1.315 1.2 1.22 1.246 1.292 1.394 1.325 1.325 1.44 1.425 1.405 0.992 1.019 1.046 1.062 1.007 1.028 1.017 1.037 1.025 1.064

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.