HIGH HILL SWITCHING STATION
SubstationMassachusetts · NSTAR ELECTRIC COMPANY
HIGH HILL SWITCHING STATION is an electric transmission substation in Massachusetts, operated by NSTAR ELECTRIC COMPANY. It is classified as sub-transmission (115 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #1277 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 2.0 mi |
| #7835 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 4.2 mi |
| #17072 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 6.6 mi |
| #21572 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 2.4 mi |
| #46791 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 5.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of HIGH HILL SWITCHING STATION, 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 |
|---|---|---|---|---|---|---|---|
| ANP BELLINGHAM ENERGY PROJECT | Substation-Adjacent | MA | Norfolk County | 345 kV | 600 MW | 3.5 yrs | 72.9 |
| BERRY STREET | Substation-Adjacent | RI | Providence County | 345 kV | 600 MW | 3.5 yrs | 69.1 |
| FALL RIVER | Substation-Adjacent | RI | Bristol County | 345 kV | 600 MW | 3.5 yrs | 68.8 |
| UNKNOWN136319 | Substation-Adjacent | RI | Providence County | 115 kV | 100 MW | 3.5 yrs | 68.6 |
| ROBINSON AVENUE | Substation-Adjacent | RI | Providence County | 115 kV | 100 MW | 3.5 yrs | 68.5 |
| UNKNOWN133428 | Substation-Adjacent | MA | Plymouth County | 345 kV | 600 MW | 3.5 yrs | 68.1 |
| NORTH ATTLEBORO | Substation-Adjacent | MA | Norfolk County | 115 kV | 100 MW | 3.5 yrs | 66.9 |
| TAP136310 | Substation-Adjacent | RI | Bristol County | 115 kV | 100 MW | 3.5 yrs | 66.8 |
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 HIGH HILL SWITCHING STATION substation, Massachusetts. 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.