POSTON
SubstationOhio · AEP
POSTON is an electric transmission substation in Ohio, operated by AEP. It is classified as sub-transmission (138 kv) and connects 8 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 |
|---|---|---|---|---|
| #534 | 138 kV | OHIO POWER CO | IN SERVICE | 24.9 mi |
| #25473 | 138 kV | OHIO POWER CO | IN SERVICE | 9.7 mi |
| #25963 | 138 kV | OHIO POWER CO | IN SERVICE | 3.4 mi |
| #30790 | 138 kV | OHIO POWER CO | IN SERVICE | 4.1 mi |
| #37497 | 138 kV | OHIO POWER CO | IN SERVICE | 3.4 mi |
| #60452 | 138 kV | AEP | IN SERVICE | 7.2 mi |
| #60454 | 138 kV | AEP | IN SERVICE | 5.3 mi |
| #60847 | 138 kV | OHIO POWER CO | IN SERVICE | 42.7 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of POSTON, 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 |
|---|---|---|---|---|---|---|---|
| FLATLICK | Substation-Adjacent | OH | Hocking County | 765 kV | 1,000 MW | 3.2 yrs | 74.8 |
| UNKNOWN154527 | Substation-Adjacent | OH | Fairfield County | 138 kV | 100 MW | 3.2 yrs | 69.6 |
| HARRISON | Substation-Adjacent | OH | Fairfield County | 500 kV | 1,000 MW | 3.2 yrs | 69.5 |
| Greenfield (FLATLICK - MARYSVILLE) | Greenfield | OH | Vinton County | 765 kV | 1,000 MW | 3.2 yrs | 69.3 |
| Greenfield (FLATLICK - MARYSVILLE) | Greenfield | OH | Vinton County | 765 kV | 1,000 MW | 3.2 yrs | 69.1 |
| UNKNOWN116630 | Substation-Adjacent | OH | Jackson County | 138 kV | 100 MW | 3.2 yrs | 69.1 |
| UNKNOWN157678 | Substation-Adjacent | OH | Hocking County | 138 kV | 100 MW | 3.2 yrs | 68.8 |
| Greenfield (FLATLICK - MARYSVILLE) | Greenfield | OH | Hocking County | 765 kV | 1,000 MW | 3.2 yrs | 68.4 |
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.
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This page shows a public slice of the GridCensus dataset for POSTON substation, Ohio. 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.