Grayson County, Texas: power grid and siting data
Grayson County is in ERCOT's NORTH load zone. It has 27 mapped substations, owned mostly by Oncor, Grayson Collin Electric Co Op and Multivision Properties Lp; the highest voltage is 138 kV. The ERCOT queue lists 3 generation projects (2 solar and 1 gas) and 1 battery storage project here.
Substations in Grayson County
20 at 138 kV, 1 at 115 kV, 6 at 69 kV and below.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Unnamed station | 138 kV | Oncor | 7 | map |
| Unnamed station | 138 kV | Multivision Properties Lp | 3 | map |
| Unnamed station | 138 kV | Sanderson Cecile Elizabeth Estate | 3 | map |
| Unnamed station | 138 kV | Usa | 3 | map |
| Tap305109 | 138 kV | Grayson Collin Electric Co Op | 3 | map |
| Tap305271 | 138 kV | not recorded | 3 | map |
| Unnamed station | 138 kV | Texas Instruments Inc | 3 | map |
| Unnamed station | 138 kV | Brazos Elec Power Co Op Inc U | 3 | map |
| Tap310558 | 138 kV | Alexander James H Etux Phyllis | 3 | map |
| Unnamed station | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Grayson Collin Electric Cooperative Inc | 2 | map |
| Unnamed station | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Finisar Sherman Re Holdco Llc | 2 | map |
| Unnamed station | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Grayson Collin Electric Cooperative | 1 | map |
| Unnamed station | 138 kV | Grayson Collin Electric Co Op | 1 | map |
| Unnamed station | 138 kV | Oncor | 0 | map |
| Unnamed station | 115 kV | Rayburn | 0 | map |
| Unnamed station | 69 kV | Oncor | 4 | map |
| Unnamed station | 69 kV | Texoma Area Solid Waste Authority | 3 | map |
| Unnamed station | 69 kV | Oncor | 2 | map |
| Unnamed station | 69 kV | Oncor | 2 | map |
| Unnamed station | 69 kV | Oncor | 1 | map |
| Unnamed station | 69 kV | Grayson Collin Electric Co Op | 1 | map |
ERCOT interconnection queue
3 generation projects are queued in Grayson County: 2 solar and 1 gas. By stage: 2 with a signed interconnection agreement and 1 in full interconnection study. 1 battery storage project is queued, 0 with a signed interconnection agreement.
From the ERCOT GIS report. Project names, developers, MW and dates are on Pro.
Planned transmission
6 planned grid projects touch Grayson County: 2 new substations and 4 new or rebuilt lines, 1 at 345 kV or above.
Wholesale power prices
The NORTH load zone averaged $39.98/MWh day-ahead over the last 7 days. Nearest generator pricing nodes: DENISON_G1_2 $39.58, FRMR_BS2_RN1 $40.05 and CMPD_SLR_RN $38.87.
ERCOT day-ahead settlement point prices. Hourly history, battery spreads and real-time prices are on the map.
Data centers and large loads
1 announced data center campus in Grayson County.
- Denison takes proactive step on potential data centers KXII 2026-05-19
- Denison establishes data center guidelines KTEN 2026-05-19
- Denison city council takes up data center zoning changes; public weighs in with mixed reaction KXII 2026-05-18
- Proposal for data center in Sherman pulled KXII 2026-05-02
- Data center proposal on hold in Sherman KTEN 2026-05-01
Jurisdiction
Nearest city to the county center: Southmayd (0.1 mi). Outside city limits and ETJ, development falls under county rules and state law. City limits and estimated ETJ are on the map.
Nearby counties
See Grayson County on the map
Every substation, line, queue project, pipeline and price node in Texas, plus Dub, an AI landman who answers questions about any spot. Free account, no card.
Sources: HIFLD and OpenStreetMap substations and lines, ERCOT GIS report (queue, 2026-09), ERCOT day-ahead prices, TxDOT and StratMap boundaries, Barrio Energy research. Updated 2026-11-09. Screening data only; the serving utility confirms capacity.