Gregg County, Texas: power grid and siting data
SWEPCO (AEP, non-ERCOT) owns most of the substations near the county center. It has 26 mapped substations, owned mostly by SWEPCO (AEP, non-ERCOT), Southwestern Electric and Rusk Co Electric; the highest voltage is 138 kV. The ERCOT queue lists 0 generation projects and 0 battery storage projects here.
Substations in Gregg County
9 at 138 kV, 17 at 69 kV and below.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Unnamed station | 138 kV | Eastman Chemical Co | 6 | map |
| Lake Lamond | 138 kV | SWEPCO (AEP, non-ERCOT) | 5 | map |
| Unnamed station | 138 kV | SWEPCO (AEP, non-ERCOT) | 4 | map |
| Unnamed station | 138 kV | Southwestern Electric | 3 | map |
| Longview | 138 kV | Southwestern Electric | 3 | map |
| Greggton | 138 kV | SWEPCO (AEP, non-ERCOT) | 2 | map |
| Unnamed station | 138 kV | SWEPCO (AEP, non-ERCOT) | 1 | map |
| Unnamed station | 138 kV | Air Liquide Large Industries | 1 | map |
| Unnamed station | 138 kV | SWEPCO (AEP, non-ERCOT) | 0 | map |
| Whitney | 69 kV | SWEPCO (AEP, non-ERCOT) | 9 | map |
| Knox Lee | 69 kV | SWEPCO (AEP, non-ERCOT) | 7 | map |
| Harrison Road | 69 kV | SWEPCO (AEP, non-ERCOT) | 3 | map |
| Tap308042 | 69 kV | Group D Mgmt Lp & Bluebird Mgmt Lp | 3 | map |
| Tap310538 | 69 kV | Rusk Co Electric | 3 | map |
| Tap310800 | 69 kV | Singer John Christopher | 3 | map |
| Spring Hill | 69 kV | SWEPCO (AEP, non-ERCOT) | 2 | map |
| Unnamed station | 69 kV | SWEPCO (AEP, non-ERCOT) | 2 | map |
| Unnamed station | 69 kV | Jlf Holding Llc | 2 | map |
| Unnamed station | 69 kV | SWEPCO (AEP, non-ERCOT) | 2 | map |
| Unnamed station | 69 kV | SWEPCO (AEP, non-ERCOT) | 2 | map |
| Unnamed station | 69 kV | SWEPCO (AEP, non-ERCOT) | 2 | map |
| Unnamed station | 69 kV | SWEPCO (AEP, non-ERCOT) | 2 | map |
| Unnamed station | 69 kV | Rusk Co Electric | 1 | map |
| Letourneau | 69 kV | Joy Global Longview Operations Llc | 1 | map |
| Unnamed station | 69 kV | Mid Valley Pipeline Co | 0 | map |
| Unnamed station | 69 kV | Plains Marketing Lp | 0 | map |
ERCOT interconnection queue
No generation projects are queued in Gregg County. No battery storage projects are queued.
From the ERCOT GIS report. Project names, developers, MW and dates are on Pro.
Planned transmission
No planned substations, lines or upgrades are recorded in Gregg County.
Wholesale power prices
No price data.
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 Gregg County.
Jurisdiction
Nearest city to the county center: Longview (0.9 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 Gregg 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.