SUMMERFIELD
SubstationOhio · OHIO POWER CO
SUMMERFIELD is an electric transmission substation in Ohio, operated by OHIO POWER CO. It is classified as sub-transmission (138 kv) and connects 5 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
Ownership & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #334 | 138 kV | OHIO POWER CO | IN SERVICE | 12.1 mi |
| #17852 | 138 kV | OHIO POWER CO | UNDER CONSTRUCTION | 10.3 mi |
| #20800 | 138 kV | OHIO POWER CO | IN SERVICE | 6.7 mi |
| #29786 | 138 kV | WHEELING POWER CO | IN SERVICE | 29.1 mi |
| #46588 | 138 kV | OHIO POWER CO | IN SERVICE | 10.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SUMMERFIELD, 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 |
|---|---|---|---|---|---|---|---|
| KAMMER (138KV) | Substation-Adjacent | OH | Monroe County | 345 kV | 600 MW | 3.2 yrs | 69.9 |
| WASHINGTON ENERGY FACILITY | Substation-Adjacent | OH | Noble County | 345 kV | 600 MW | 3.2 yrs | 68.5 |
| Greenfield (UNKNOWN151647 - KAMMER (765KV)) | Greenfield | OH | Belmont County | 765 kV | 1,000 MW | 3.2 yrs | 68.3 |
| Greenfield (UNKNOWN151647 - KAMMER (765KV)) | Greenfield | OH | Belmont County | 765 kV | 1,000 MW | 3.2 yrs | 68.3 |
| Greenfield (UNKNOWN151647 - KAMMER (765KV)) | Greenfield | OH | Guernsey County | 765 kV | 1,000 MW | 3.2 yrs | 67.8 |
| TAP163634 | Substation-Adjacent | OH | Noble County | 138 kV | 100 MW | 3.2 yrs | 67.7 |
| Greenfield (UNKNOWN151647 - KAMMER (765KV)) | Greenfield | OH | Belmont County | 765 kV | 1,000 MW | 3.2 yrs | 67.5 |
| Greenfield (KAMMER (138KV) - WASHINGTON EN) | Greenfield | OH | Monroe County | 345 kV | 600 MW | 3.2 yrs | 66.9 |
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 SUMMERFIELD 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.