PORT UNION SUBSTATION
SubstationOhio · DUKE ENERGY
PORT UNION SUBSTATION is an electric transmission substation in Ohio, operated by DUKE ENERGY. It is classified as high-voltage (345 kv) and connects 11 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 |
|---|---|---|---|---|
| #26208 | 345 kV | DUKE ENERGY | IN SERVICE | 46.0 mi |
| #4174 | 345 kV | DUKE ENERGY | IN SERVICE | 6.0 mi |
| #18050 | 345 kV | DUKE ENERGY | IN SERVICE | 12.0 mi |
| #27576 | 138 kV | — | IN SERVICE | 4.4 mi |
| #28741 | 138 kV | DUKE ENERGY | IN SERVICE | 3.1 mi |
| #45154 | 138 kV | — | IN SERVICE | 1.8 mi |
| #46184 | 138 kV | — | IN SERVICE | 9.8 mi |
| #525 | 138 kV | — | IN SERVICE | 5.2 mi |
| #60514 | 138 kV | — | IN SERVICE | 2.9 mi |
| #20682 | 138 kV | — | IN SERVICE | 2.8 mi |
| #24923 | 138 kV | — | IN SERVICE | 5.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of PORT UNION SUBSTATION, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN113019 | Substation-Adjacent | OH | Warren County | 345 kV | 600 MW | 3.2 yrs | 78.5 |
| UNKNOWN113763 | Substation-Adjacent | OH | Hamilton County | 345 kV | 600 MW | 3.2 yrs | 78.5 |
| TAP137571 | Substation-Adjacent | OH | Warren County | 345 kV | 600 MW | 3.2 yrs | 78.3 |
| TERMINAL | Substation-Adjacent | OH | Hamilton County | 345 kV | 600 MW | 3.2 yrs | 78.3 |
| FOSTER | Substation-Adjacent | OH | Warren County | 345 kV | 600 MW | 3.2 yrs | 77.8 |
| TAP137572 | Substation-Adjacent | OH | Warren County | 345 kV | 600 MW | 3.2 yrs | 77.6 |
| WOODSDALE | Substation-Adjacent | IN | Dearborn County | 345 kV | 600 MW | 3.0 yrs | 77.4 |
| WOODSDALE | Substation-Adjacent | OH | Butler County | 345 kV | 600 MW | 3.2 yrs | 77.4 |
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.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for PORT UNION SUBSTATION 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.