Electric Power Monthly
| Table A.1.A. Relative Standard Error (Percent) for Net Generation by Fuel Type: |
| Total (All Sectors) by Census Division and State, March 2026 |
| Census Region and State | Coal | Petroleum Liquids | Petroleum Coke | Natural Gas | Other Gases | Nuclear | Hydroelectric Conventional |
|---|---|---|---|---|---|---|---|
| New England | 0 | 15 | 0 | 2 | 0 | 0 | 12 |
| Connecticut | 0 | 46 | 0 | 1 | 0 | 0 | 36 |
| Maine | 0 | 3 | 0 | 13 | 0 | 0 | 15 |
| Massachusetts | 0 | 21 | 0 | 7 | 0 | 0 | 26 |
| New Hampshire | 0 | 20 | 0 | 0 | 0 | 0 | 23 |
| Rhode Island | 0 | 109 | 0 | 13 | 0 | 0 | 308 |
| Vermont | 0 | 223 | 0 | 0 | 0 | 0 | 21 |
| Middle Atlantic | 15 | 21 | 0 | 1 | 26 | 0 | 3 |
| New Jersey | 0 | 58 | 0 | 2 | 0 | 0 | 0 |
| New York | 0 | 26 | 0 | 2 | 0 | 0 | 2 |
| Pennsylvania | 15 | 26 | 0 | 1 | 32 | 0 | 16 |
| East North Central | 1 | 13 | 39 | 1 | 13 | 0 | 17 |
| Illinois | 8 | 20 | 0 | 5 | 0 | 0 | 60 |
| Indiana | 0.38 | 8 | 0 | 3 | 16 | 0 | 39 |
| Michigan | 0 | 11 | 0 | 3 | 0 | 0 | 32 |
| Ohio | 1 | 7 | 124 | 2 | 22 | 0 | 35 |
| Wisconsin | 0.10 | 64 | 0 | 6 | 0 | 0 | 24 |
| West North Central | 3 | 17 | 0 | 9 | 0 | 0 | 12 |
| Iowa | 0 | 18 | 0 | 13 | 0 | 0 | 33 |
| Kansas | 17 | 38 | 0 | 21 | 0 | 0 | 0 |
| Minnesota | 0.32 | 111 | 0 | 14 | 0 | 0 | 36 |
| Missouri | 5 | 24 | 0 | 14 | 0 | 0 | 24 |
| Nebraska | 4 | 74 | 0 | 66 | 0 | 0 | 33 |
| North Dakota | 0.16 | 12 | 0 | 46 | 0 | 0 | 24 |
| South Dakota | 0 | 119 | 0 | 49 | 0 | 0 | 16 |
| South Atlantic | 1 | 12 | 0 | 1 | 0 | 0 | 9 |
| Delaware | 0 | 62 | 0 | 10 | 0 | 0 | 0 |
| District of Columbia | 0 | 3,469 | 0 | 41 | 0 | 0 | 0 |
| Florida | 0 | 32 | 0 | 1 | 0 | 0 | 55 |
| Georgia | 0.12 | 55 | 0 | 3 | 0 | 0 | 16 |
| Maryland | 0 | 3 | 0 | 2 | 0 | 0 | 1 |
| North Carolina | 0.15 | 22 | 0 | 1 | 0 | 0 | 13 |
| South Carolina | 0 | 28 | 0 | 1 | 0 | 0 | 19 |
| Virginia | 0 | 94 | 0 | 3 | 0 | 0 | 23 |
| West Virginia | 2 | 0 | 0 | 11 | 0 | 0 | 20 |
| East South Central | 0 | 5 | 0 | 2 | 140 | 0 | 6 |
| Alabama | 0 | 79 | 0 | 3 | 417 | 0 | 8 |
| Kentucky | 0 | 2 | 0 | 5 | 0 | 0 | 10 |
| Mississippi | 0 | 29 | 0 | 3 | 0 | 0 | 0 |
| Tennessee | 0 | 0.32 | 0 | 1 | 0 | 0 | 9 |
| West South Central | 0 | 17 | 0 | 1 | 6 | 0 | 11 |
| Arkansas | 0 | 12 | 0 | 7 | 0 | 0 | 15 |
| Louisiana | 0 | 38 | 0 | 1 | 8 | 0 | 24 |
| Oklahoma | 0 | 4 | 0 | 4 | 0 | 0 | 20 |
| Texas | 0 | 31 | 0 | 2 | 7 | 0 | 27 |
| Mountain | 2 | 34 | 0 | 1 | 10 | 0 | 8 |
| Arizona | 0 | 50 | 0 | 3 | 0 | 0 | 9 |
| Colorado | 0 | 119 | 0 | 2 | 0 | 0 | 27 |
| Idaho | 0 | 0 | 0 | 36 | 0 | 0 | 13 |
| Montana | 9 | 164 | 0 | 42 | 0 | 0 | 12 |
| Nevada | 0 | 0 | 0 | 0 | 0 | 0 | 9 |
| New Mexico | 0 | 671 | 0 | 5 | 0 | 0 | 82 |
| Utah | 0 | 3 | 0 | 2 | 0 | 0 | 39 |
| Wyoming | 5 | 2 | 0 | 5 | 10 | 0 | 35 |
| Pacific Contiguous | 0 | 53 | 0 | 3 | 2 | 0 | 2 |
| California | 0 | 38 | 0 | 2 | 3 | 0 | 8 |
| Oregon | 0 | 88 | 0 | 8 | 0 | 0 | 5 |
| Washington | 0 | 94 | 0 | 18 | 0 | 0 | 2 |
| Pacific Noncontiguous | 27 | 1 | 0 | 47 | 0 | 0 | 26 |
| Alaska | 27 | 4 | 0 | 47 | 0 | 0 | 27 |
| Hawaii | 0 | 1 | 0 | 0 | 0 | 0 | 84 |
| U.S. Total | 1 | 2 | 26 | 1 | 8 | 0 | 3 |