CLAY
SubstationNew York · NIAGARA MOHAWK POWER CORP.
CLAY is an electric transmission substation in New York, operated by NIAGARA MOHAWK POWER CORP.. It is classified as high-voltage (345 kv) and connects 16 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 |
|---|---|---|---|---|
| #48235 | 345 kV | NIAGARA MOHAWK POWER CORP. | IN SERVICE | 50.1 mi |
| #6861 | 345 kV | — | IN SERVICE | 63.1 mi |
| #20173 | 345 kV | NIAGARA MOHAWK POWER CORP. | IN SERVICE | 27.8 mi |
| #24118 | 345 kV | NIAGARA MOHAWK POWER CORP. | IN SERVICE | 15.2 mi |
| #24415 | 345 kV | NIAGARA MOHAWK POWER CORP. | IN SERVICE | 29.3 mi |
| #33558 | 345 kV | NIAGARA MOHAWK POWER CORP. | IN SERVICE | 18.6 mi |
| #35718 | 345 kV | NIAGARA MOHAWK POWER CORP. | IN SERVICE | 50.1 mi |
| #5913 | 345 kV | — | IN SERVICE | 63.1 mi |
| #41089 | 115 kV | NIAGARA MOHAWK POWER CORP. | IN SERVICE | 4.1 mi |
| #6472 | 115 kV | NIAGARA MOHAWK POWER CORP. | IN SERVICE | 0.3 mi |
| #24893 | 115 kV | NIAGARA MOHAWK POWER CORP. | IN SERVICE | 4.2 mi |
| #8940 | 115 kV | NIAGARA MOHAWK POWER CORP. | IN SERVICE | 6.7 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of CLAY, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN125434 | Substation-Adjacent | NY | Onondaga County | 345 kV | 600 MW | 3.5 yrs | 72.3 |
| DEWITT | Substation-Adjacent | NY | Onondaga County | 345 kV | 600 MW | 3.5 yrs | 71.2 |
| CLAY | Substation-Adjacent | NY | Onondaga County | 345 kV | 600 MW | 3.5 yrs | 70.1 |
| ASH STREET STATION 223 | Substation-Adjacent | NY | Onondaga County | 115 kV | 100 MW | 3.5 yrs | 67.2 |
| PEBBLE HILL | Substation-Adjacent | NY | Onondaga County | 115 kV | 100 MW | 3.5 yrs | 66.7 |
| UNKNOWN124959 | Substation-Adjacent | NY | Onondaga County | 115 kV | 100 MW | 3.5 yrs | 66.6 |
| SOUTHWOOD | Substation-Adjacent | NY | Onondaga County | 115 kV | 100 MW | 3.5 yrs | 66.5 |
| UNKNOWN125437 | Substation-Adjacent | NY | Onondaga County | 115 kV | 100 MW | 3.5 yrs | 66.5 |
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 CLAY substation, New York. 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.