| Table A.3.A. Relative Standard Error (Percent) for Net Generation by Fuel Type: |
| Independent Power Producers by Census Division and State, January 2026 |
| Census Region and State | Coal | Petroleum Liquids | Petroleum Coke | Natural Gas | Other Gases | Nuclear | Hydroelectric Conventional |
|---|---|---|---|---|---|---|---|
| New England | 0 | 8 | 0 | 3 | 0 | 0 | 8 |
| Connecticut | 0 | 17 | 0 | 1 | 0 | 0 | 30 |
| Maine | 0 | 2 | 0 | 13 | 0 | 0 | 11 |
| Massachusetts | 0 | 7 | 0 | 5 | 0 | 0 | 22 |
| New Hampshire | 0 | 20 | 0 | 0 | 0 | 0 | 16 |
| Rhode Island | 0 | 26 | 0 | 13 | 0 | 0 | 186 |
| Vermont | 0 | 0 | 0 | 0 | 0 | 0 | 19 |
| Middle Atlantic | 5 | 8 | 0 | 1 | 0 | 0 | 9 |
| New Jersey | 0 | 15 | 0 | 4 | 0 | 0 | 0 |
| New York | 0 | 6 | 0 | 2 | 0 | 0 | 9 |
| Pennsylvania | 5 | 24 | 0 | 1 | 0 | 0 | 11 |
| East North Central | 0 | 82 | 11 | 1 | 25 | 0 | 43 |
| Illinois | 0 | 147 | 0 | 5 | 0 | 0 | 44 |
| Indiana | 0 | 0 | 0 | 0.48 | 0 | 0 | 0 |
| Michigan | 0 | 0 | 0 | 1 | 0 | 0 | 113 |
| Ohio | 0 | 97 | 11 | 2 | 25 | 0 | 42 |
| Wisconsin | 0 | 0 | 0 | 790 | 0 | 0 | 90 |
| West North Central | 0 | 128 | 0 | 12 | 0 | 0 | 60 |
| Iowa | 0 | 536 | 0 | 0 | 0 | 0 | 0 |
| Kansas | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Minnesota | 0 | 132 | 0 | 19 | 0 | 0 | 63 |
| Missouri | 0 | 0 | 0 | 3 | 0 | 0 | 0 |
| South Dakota | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| South Atlantic | 6 | 21 | 0 | 1 | 0 | 0 | 8 |
| Delaware | 0 | 74 | 0 | 11 | 0 | 0 | 0 |
| Florida | 0 | 14 | 0 | 5 | 0 | 0 | 0 |
| Georgia | 0 | 51 | 0 | 1 | 0 | 0 | 369 |
| Maryland | 0 | 30 | 0 | 2 | 0 | 0 | 2 |
| North Carolina | 0 | 18 | 0 | 3 | 0 | 0 | 22 |
| South Carolina | 0 | 903 | 0 | 16 | 0 | 0 | 101 |
| Virginia | 0 | 5 | 0 | 0 | 0 | 0 | 57 |
| West Virginia | 8 | 0 | 0 | 25 | 0 | 0 | 33 |
| East South Central | 0 | 1,154 | 0 | 0 | 0 | 0 | 20 |
| Alabama | 0 | 1,154 | 0 | 0 | 0 | 0 | 0 |
| Kentucky | 0 | 0 | 0 | 0 | 0 | 0 | 146 |
| Mississippi | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Tennessee | 0 | 0 | 0 | 0 | 0 | 0 | 21 |
| West South Central | 0 | 91 | 0 | 1 | 0 | 0 | 17 |
| Arkansas | 0 | 0 | 0 | 8 | 0 | 0 | 0 |
| Louisiana | 0 | 0 | 0 | 0.08 | 0 | 0 | 18 |
| Oklahoma | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Texas | 0 | 91 | 0 | 1 | 0 | 0 | 0 |
| Mountain | 5 | 187 | 0 | 3 | 0 | 0 | 26 |
| Arizona | 0 | 0 | 0 | 0.31 | 0 | 0 | 0 |
| Colorado | 0 | 0 | 0 | 6 | 0 | 0 | 63 |
| Idaho | 0 | 0 | 0 | 59 | 0 | 0 | 32 |
| Montana | 6 | 568 | 0 | 0 | 0 | 0 | 86 |
| Nevada | 0 | 0 | 0 | 0 | 0 | 0 | 93 |
| New Mexico | 0 | 0 | 0 | 3 | 0 | 0 | 0 |
| Utah | 0 | 0 | 0 | 80 | 0 | 0 | 0 |
| Wyoming | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Pacific Contiguous | 0 | 469 | 0 | 2 | 0 | 0 | 28 |
| California | 0 | 0 | 0 | 1 | 0 | 0 | 37 |
| Oregon | 0 | 0 | 0 | 1 | 0 | 0 | 57 |
| Washington | 0 | 2,456 | 0 | 41 | 0 | 0 | 64 |
| Pacific Noncontiguous | 51 | 0.06 | 0 | 0 | 0 | 0 | 0 |
| Alaska | 51 | 0 | 0 | 0 | 0 | 0 | 0 |
| Hawaii | 0 | 0.06 | 0 | 0 | 0 | 0 | 0 |
| U.S. Total | 1 | 6 | 8 | 1 | 9 | 0 | 6 |