| Utility | State | Customers | Residential rate |
|---|
| Dahlberg Light & Power Co | WI | 12,339 | 13.16¢ |
| Dakota Electric Association | MN | 117,913 | 15.63¢ |
| Dakota Energy Coop Inc | SD | 3,645 | 16.28¢ |
| Dakota Valley Elec Coop Inc | ND | 7,019 | 12.74¢ |
| Dalton Utilities | GA | 18,039 | 10.34¢ |
| Darke Rural Electric Coop, Inc | OH | 5,255 | — |
| Darlington Light & Power Co | IN | 763 | — |
| David Energy Supply LLC | NY | 1,936 | 13.31¢ |
| Daviess Martin County R E M C | IN | 8,585 | 14.90¢ |
| Dawson Power District | NE | 23,512 | 11.32¢ |
| Dayton Power & Light Co | OH | 153,100 | 16.12¢ |
| Deaf Smith Electric Coop, Inc | TX | 4,507 | 8.57¢ |
| Decatur County Rural E M C | IN | 8,402 | 15.02¢ |
| Decatur Utilities | AL | 26,999 | 12.14¢ |
| Deep East Texas Elec Coop Inc | TX | 45,605 | 14.05¢ |
| Delano Municipal Utilities (MN) | MN | 3,570 | — |
| Delaware County Elec Coop Inc | NY | 5,490 | — |
| Delaware Electric Cooperative | DE | 122,301 | 13.89¢ |
| Delmarva Power | DE | 505,595 | 19.69¢ |
| Delta Electric Power Assn | MS | 28,939 | 12.70¢ |
| Delta Montrose Electric Assn | CO | 37,301 | 14.90¢ |
| Denton County Elec Coop, Inc | TX | 337,015 | 13.18¢ |
| Deseret Generation & Tran Coop | CO | 1 | — |
| Desert Community Energy | CA | 32,195 | 18.07¢ |
| Devonshire Energy, LLC | DC | 4 | — |
| Digital Power USA, Inc. | TX | 1 | — |
| Direct Energy Business | TX | 90,248 | — |
| Direct Energy Services | MA | 1,310,067 | 14.56¢ |
| Discount Power Inc - (CT) | MA | 12,200 | 21.73¢ |
| Diverse Power Incorporated | GA | 38,635 | 17.24¢ |
| Dixie Electric Coop - (AL) | AL | 27,176 | 15.44¢ |
| Dixie Electric Membership Corp - (LA) | LA | 119,759 | 13.53¢ |
| Dixie Electric Power Assn - (MS) | MS | 41,654 | 13.90¢ |
| Dixie Escalante R E A, Inc | UT | 34,851 | 9.24¢ |
| DOD USMC Marine Air Ground Combat | CA | 1,514 | — |
| Dominion Energy South Carolina, Inc | SC | 824,270 | 16.41¢ |
| Doniphan Elec Coop Assn, Inc | KS | 1,592 | — |
| Douglas Electric Coop - (OR) | OR | 10,744 | — |
| Douglas Electric Coop, Inc | SD | 823 | — |
| DS&O Electric Cooperative, Inc. | KS | 8,567 | — |
| DTE Electric Company | MI | 2,290,492 | 20.25¢ |
| Dublin Municipal Electric Util | IN | 489 | — |
| Dubois Rural Electric Coop Inc | IN | 14,574 | 13.92¢ |
| Duck River Elec Member Corp | TN | 86,055 | 13.59¢ |
| Duke Energy Carolinas, LLC | NC | 2,962,438 | 13.43¢ |
| Duke Energy Florida, LLC | FL | 2,037,985 | 18.36¢ |
| Duke Energy Indiana, LLC | IN | 921,804 | 14.98¢ |
| Duke Energy Kentucky | KY | 155,775 | 13.86¢ |
| Duke Energy Ohio Inc | OH | 297,189 | 16.83¢ |
| Duke Energy Progress - (NC) | NC | 1,782,155 | 15.07¢ |
| Duncan Valley Elec Coop, Inc | AZ | 2,335 | — |
| Dunn County Electric Coop | WI | 10,676 | 16.17¢ |
| Duquesne Light Co | PA | 476,364 | 23.47¢ |
| Dynegy Energy Services, LLC | OH | 793,547 | 9.00¢ |