Electricity in Grayson County, Texas
6 electric utilities serve homes in Grayson County, Texas: Oncor, CoServ Electric, Texas-New Mexico Power, Grayson-Collin Electric Cooperative, Cooke County Electric Cooperative Association and Fannin County Electric Cooperative. In 2025, the average home bill of these utilities was $157.07 (CoServ Electric) to $192.28 (Grayson-Collin Electric Cooperative) a month. This page covers 2 cities with 25,000 or more people in the county, from Sherman to Denison.
- 2 cities
- 6 utilities
- EIA and Census data, 2025
Electric utilities in Grayson County
EIA lists utilities by county, not by address. Your address has one utility: its name is on your bill, or type your ZIP code in the utility finder.
| Utility | Homes in Texas | Average bill 2025 | 1,000 kWh now |
|---|---|---|---|
| OncorInvestor-owned utility · delivery only · bill calculator | 3,545,814 | — | $72.74delivery charges |
| CoServ ElectricElectric cooperative · bill calculator | 310,805 | $157.071,192 kWh, 13.2¢ | — |
| Texas-New Mexico PowerInvestor-owned utility · delivery only | 237,930 | — | — |
| Grayson-Collin Electric CooperativeElectric cooperative | 97,950 | $192.281,128 kWh, 17.0¢ | — |
| Cooke County Electric Cooperative AssociationElectric cooperative | 16,192 | $181.471,174 kWh, 15.5¢ | — |
| Fannin County Electric CooperativeElectric cooperative | 11,962 | $190.781,174 kWh, 16.2¢ | — |
1 smaller utility with fewer than 1,000 homes is also listed in the county. The average bill is the 2025 average of each utility's homes that bought their power from it (EIA-861). The Texas average was $170.95 a month.
Compare retail plans: 174 electricity plans in the Oncor area.
Compare retail plans: 169 electricity plans in the Texas-New Mexico Power (TNMP) area.
Cities in Grayson County
| City | People | City-owned utility | Solar kWh a year per kW |
|---|---|---|---|
| Sherman | 52,417 | — | 1,515 |
| Denison | 26,822 | — | 1,511 |
A city-owned utility is a municipal utility in the county with the city's name (EIA data). Solar output: PVWatts version 8 for a south-facing roof; see the solar savings calculator.
More about Texas: Texas electric rates, all Texas utilities, home energy rebates and natural gas bills.
Who provides electricity in Grayson County?
6 electric utilities serve homes in Grayson County, Texas: Oncor, CoServ Electric, Texas-New Mexico Power, Grayson-Collin Electric Cooperative, Cooke County Electric Cooperative Association and Fannin County Electric Cooperative. The name of your utility is on your bill.
Which cities in Grayson County are on this page?
Sherman and Denison.
Sources: EIA-861 data, 2025 (utilities by county, homes and average bills); Census Bureau city population estimates, Vintage 2025; PVWatts (National Laboratory of the Rockies).