Electric Power Monthly
| Table A.1.C. Relative Standard Error (Percent) for Small Scale Solar Generation and Capacity |
| by Sector, Census Division and State, March 2025 |
| Census Region and State | Residential | Commercial | Industrial | Transportation | Total |
|---|---|---|---|---|---|
| New England | 0.15 | 1 | 5 | . | 0.28 |
| Connecticut | 0.10 | 1 | 0 | . | 0.29 |
| Maine | 0 | 0 | 0 | . | 0 |
| Massachusetts | 0.22 | 1 | 12 | . | 1 |
| New Hampshire | 0 | 0 | 0 | . | 0 |
| Rhode Island | 0 | 0 | 0 | . | 0 |
| Vermont | 2 | 2 | 0 | . | 2 |
| Middle Atlantic | 1 | 1 | 3 | . | 0.41 |
| New Jersey | 0.25 | 0.31 | 2 | . | 0.22 |
| New York | 0.04 | 0 | 1 | . | 0.02 |
| Pennsylvania | 3 | 6 | 7 | . | 3 |
| East North Central | 1 | 1 | 3 | . | 1 |
| Illinois | 1 | 1 | 44 | . | 1 |
| Indiana | 8 | 1 | 10 | . | 3 |
| Michigan | 3 | 5 | 32 | . | 3 |
| Ohio | 4 | 3 | 1 | . | 2 |
| Wisconsin | 6 | 5 | 8 | . | 4 |
| West North Central | 1 | 1 | 1 | . | 1 |
| Iowa | 1 | 1 | 2 | . | 1 |
| Kansas | 1 | 3 | 15 | . | 1 |
| Minnesota | 2 | 2 | 1 | . | 1 |
| Missouri | 1 | 1 | 5 | . | 1 |
| Nebraska | 2 | 7 | 0 | . | 2 |
| North Dakota | 6 | 0 | 0 | . | 5 |
| South Dakota | 0 | 0 | 0 | . | 0 |
| South Atlantic | 1 | 1 | 2 | . | 1 |
| Delaware | 3 | 2 | 10 | . | 2 |
| District of Columbia | 0 | 0 | 0 | . | 0 |
| Florida | 1 | 4 | 2 | . | 1 |
| Georgia | 10 | 9 | 20 | . | 7 |
| Maryland | 1 | 1 | 4 | . | 1 |
| North Carolina | 2 | 2 | 0 | . | 2 |
| South Carolina | 3 | 4 | 0 | . | 3 |
| Virginia | 2 | 2 | 0 | . | 1 |
| West Virginia | 0 | 0 | 0 | . | 0 |
| East South Central | 10 | 3 | 12 | . | 8 |
| Alabama | 0 | 0 | 0 | . | 0 |
| Kentucky | 11 | 4 | 0 | . | 9 |
| Mississippi | 19 | 7 | 60 | . | 14 |
| Tennessee | 0 | 0 | 0 | . | 0 |
| West South Central | 1 | 4 | 25 | . | 2 |
| Arkansas | 3 | 6 | 27 | . | 7 |
| Louisiana | 2 | 14 | 0 | . | 2 |
| Oklahoma | 3 | 9 | 7 | . | 3 |
| Texas | 2 | 6 | 206 | . | 2 |
| Mountain | 0.18 | 0.23 | 0.26 | . | 0.15 |
| Arizona | 0.19 | 0.22 | 0 | . | 0.15 |
| Colorado | 1 | 1 | 1 | . | 1 |
| Idaho | 1 | 3 | 0 | . | 1 |
| Montana | 1 | 0 | 0 | . | 1 |
| Nevada | 0.14 | 0.18 | 0 | . | 0.13 |
| New Mexico | 1 | 1 | 0 | . | 1 |
| Utah | 1 | 1 | 0 | . | 0.47 |
| Wyoming | 0.20 | 0 | 0 | . | 0.17 |
| Pacific Contiguous | 0.10 | 0.35 | 0.05 | . | 0.10 |
| California | 0.08 | 0.34 | 0.05 | . | 0.09 |
| Oregon | 1 | 2 | 1 | . | 1 |
| Washington | 2 | 6 | 1 | . | 2 |
| Pacific Noncontiguous | 0 | 0 | 0 | . | 0 |
| Alaska | 0 | 0 | 0 | . | 0 |
| Hawaii | 0 | 0 | 0 | . | 0 |
| U.S. Total | 0.16 | 0.23 | 1 | . | 0.14 |