Electric Power Monthly
| Table A.8.A. Relative Standard Error for Average Price of Electricity to Ultimate Customers |
| by End-Use Sector, Census Division, and State, March 2026 |
| Census Region and State | Residential | Commercial | Industrial | Transportation | Total |
|---|---|---|---|---|---|
| New England | 0.32 | 0.17 | 1 | 0 | 0.19 |
| Connecticut | 0.44 | 0.38 | 1 | 0 | 0.29 |
| Maine | 1 | 1 | 1 | 0 | 0.34 |
| Massachusetts | 1 | 0.25 | 2 | 0 | 0.31 |
| New Hampshire | 1 | 0.35 | 1 | 0 | 0.42 |
| Rhode Island | 0.23 | 0 | 0 | 0 | 0.07 |
| Vermont | 3 | 2 | 3 | 0 | 2 |
| Middle Atlantic | 0.22 | 0.09 | 0.16 | 0 | 0.09 |
| New Jersey | 0.37 | 0.10 | 0.35 | 0 | 0.12 |
| New York | 1 | 0.15 | 1 | 0 | 0.21 |
| Pennsylvania | 0.21 | 0.16 | 0.08 | 0 | 0.10 |
| East North Central | 0.22 | 0.25 | 0.24 | 0 | 0.14 |
| Illinois | 0.42 | 0.21 | 0.27 | 0 | 0.20 |
| Indiana | 1 | 1 | 1 | 0 | 0.45 |
| Michigan | 0.36 | 1 | 1 | 0 | 0.48 |
| Ohio | 0.31 | 0.15 | 0.23 | 0 | 0.15 |
| Wisconsin | 1 | 2 | 2 | 0 | 1 |
| West North Central | 1 | 1 | 1 | 0 | 1 |
| Iowa | 1 | 4 | 2 | 0 | 1 |
| Kansas | 2 | 3 | 3 | 0 | 2 |
| Minnesota | 1 | 3 | 2 | 0 | 1 |
| Missouri | 1 | 1 | 1 | 0 | 1 |
| Nebraska | 1 | 3 | 3 | 0 | 2 |
| North Dakota | 1 | 2 | 1 | 0 | 1 |
| South Dakota | 2 | 8 | 5 | 0 | 4 |
| South Atlantic | 0.37 | 0.40 | 1 | 0 | 0.26 |
| Delaware | 1 | 1 | 3 | 0 | 1 |
| District of Columbia | 0 | 0 | 0 | 0 | 0 |
| Florida | 1 | 1 | 2 | 0 | 0.43 |
| Georgia | 1 | 1 | 2 | 0 | 1 |
| Maryland | 0.31 | 0.13 | 1 | 0 | 0.15 |
| North Carolina | 1 | 1 | 2 | 0 | 1 |
| South Carolina | 1 | 1 | 2 | 0 | 1 |
| Virginia | 1 | 1 | 1 | 0 | 0.44 |
| West Virginia | 0.38 | 0.39 | 0.01 | 0 | 0.26 |
| East South Central | 1 | 1 | 1 | 0 | 0.36 |
| Alabama | 1 | 2 | 1 | 0 | 1 |
| Kentucky | 1 | 1 | 1 | 0 | 1 |
| Mississippi | 2 | 2 | 2 | 0 | 1 |
| Tennessee | 1 | 1 | 1 | 0 | 0.40 |
| West South Central | 1 | 1 | 1 | 0 | 0.42 |
| Arkansas | 2 | 2 | 2 | 0 | 1 |
| Louisiana | 1 | 1 | 1 | 0 | 1 |
| Oklahoma | 2 | 2 | 2 | 0 | 1 |
| Texas | 1 | 1 | 1 | 0 | 0.48 |
| Mountain | 0.35 | 0.49 | 1 | 0 | 0.29 |
| Arizona | 0.36 | 0.40 | 2 | 0 | 0.32 |
| Colorado | 1 | 1 | 1 | 0 | 1 |
| Idaho | 1 | 3 | 2 | 0 | 1 |
| Montana | 1 | 6 | 3 | 0 | 2 |
| Nevada | 1 | 0.45 | 1 | 0 | 0.39 |
| New Mexico | 2 | 2 | 2 | 0 | 1 |
| Utah | 2 | 1 | 2 | 0 | 1 |
| Wyoming | 2 | 4 | 2 | 0 | 2 |
| Pacific Contiguous | 0.24 | 0.43 | 0.49 | 0 | 0.23 |
| California | 0.21 | 0.31 | 0.34 | 0 | 0.17 |
| Oregon | 1 | 1 | 2 | 0 | 1 |
| Washington | 0.46 | 1 | 2 | 0 | 1 |
| Pacific Noncontiguous | 1 | 6 | 2 | 0 | 2 |
| Alaska | 2 | 11 | 6 | 0 | 5 |
| Hawaii | 0.24 | 0 | 0 | 0 | 0.07 |
| U.S. Total | 0.16 | 0.18 | 0.21 | 0 | 0.11 |