MERRIMAC
SubstationVirginia · APPALACHIAN POWER CO
MERRIMAC is an electric transmission substation in Virginia, operated by APPALACHIAN POWER CO. It is classified as sub-transmission (138 kv) and connects 2 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 |
|---|---|---|---|---|
| #2232 | 138 kV | APPALACHIAN POWER CO | IN SERVICE | 7.6 mi |
| #31041 | 138 kV | APPALACHIAN POWER CO | IN SERVICE | 2.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MERRIMAC, 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 |
|---|---|---|---|---|---|---|---|
| CLOVERDALE 765KV | Substation-Adjacent | VA | Salem city | 765 kV | 1,000 MW | 3.0 yrs | 73.9 |
| MATT FUNK | Substation-Adjacent | VA | Salem city | 345 kV | 600 MW | 3.0 yrs | 71.4 |
| JACKSONS FERRY | Substation-Adjacent | VA | Montgomery County | 765 kV | 1,000 MW | 3.0 yrs | 71.1 |
| Greenfield (CLOVERDALE 765KV - JACKSONS FE) | Greenfield | VA | Floyd County | 765 kV | 1,000 MW | 3.0 yrs | 69.8 |
| Greenfield (CLOVERDALE 765KV - JACKSONS FE) | Greenfield | VA | Salem city | 765 kV | 1,000 MW | 3.0 yrs | 68.6 |
| BENT MOUNTAIN | Substation-Adjacent | VA | Salem city | 138 kV | 100 MW | 3.0 yrs | 68.4 |
| JACKSONS FERRY | Substation-Adjacent | VA | Carroll County | 765 kV | 1,000 MW | 3.1 yrs | 68.4 |
| Greenfield (AXTON - JACKSONS FERRY) | Greenfield | VA | Floyd County | 765 kV | 1,000 MW | 3.1 yrs | 67.8 |
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 MERRIMAC substation, Virginia. 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.