TRISTATE
SubstationKentucky · APPALACHIAN POWER CO
TRISTATE is an electric transmission substation in Kentucky, operated by APPALACHIAN POWER CO. It is classified as high-voltage (345 kv) and connects 7 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #27961 | 345 kV | — | IN SERVICE | 14.0 mi |
| #1391 | 138 kV | APPALACHIAN POWER CO | IN SERVICE | 2.2 mi |
| #20307 | 138 kV | — | IN SERVICE | 4.4 mi |
| #537 | 138 kV | APPALACHIAN POWER CO | IN SERVICE | 2.2 mi |
| #28886 | 138 kV | — | IN SERVICE | 5.4 mi |
| #49837 | 138 kV | APPALACHIAN POWER CO | IN SERVICE | 6.8 mi |
| #22321 | 138 kV | APPALACHIAN POWER CO | IN SERVICE | 7.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TRISTATE, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| HANGING ROCK ENERGY FACILITY | Substation-Adjacent | KY | Greenup County | 765 kV | 1,000 MW | 3.2 yrs | 74.7 |
| BROADFORD (765 KV) | Substation-Adjacent | KY | Lawrence County | 765 kV | 1,000 MW | 3.6 yrs | 73.5 |
| TRISTATE | Substation-Adjacent | KY | Boyd County | 345 kV | 600 MW | 3.2 yrs | 73.3 |
| HANGING ROCK | Substation-Adjacent | KY | Boyd County | 765 kV | 1,000 MW | 3.2 yrs | 72.0 |
| CULLODEN | Substation-Adjacent | WV | Lincoln County | 765 kV | 1,000 MW | 3.2 yrs | 71.0 |
| TRISTATE | Substation-Adjacent | KY | Boyd County | 345 kV | 600 MW | 3.6 yrs | 71.0 |
| BAKER | Substation-Adjacent | OH | Lawrence County | 765 kV | 1,000 MW | 3.2 yrs | 70.3 |
| BIG SANDY | Substation-Adjacent | KY | Lawrence County | 345 kV | 600 MW | 3.6 yrs | 70.2 |
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for TRISTATE substation, Kentucky. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.