DEWAR STREET
SubstationMassachusetts · NSTAR ELECTRIC COMPANY
DEWAR STREET is an electric transmission substation in Massachusetts, operated by NSTAR ELECTRIC COMPANY. It is classified as sub-transmission (115 kv) and connects 4 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 |
|---|---|---|---|---|
| #9417 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 2.3 mi |
| #9418 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 2.3 mi |
| #9419 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 9.3 mi |
| #9420 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 9.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of DEWAR STREET, 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 |
| KINGSTON STREET | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 3.5 yrs | 72.2 |
| K STREET | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 3.5 yrs | 71.1 |
| WALTHAM | Substation-Adjacent | MA | Middlesex County | 230 kV | 300 MW | 3.5 yrs | 70.9 |
| NORTH CAMBRIDGE | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 3.5 yrs | 70.6 |
| TEWKSBURY SUBSTATION | Substation-Adjacent | MA | Middlesex County | 230 kV | 300 MW | 3.5 yrs | 70.5 |
| GOLDEN HILLS | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 3.5 yrs | 70.4 |
| MYSTIC | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 3.5 yrs | 70.1 |
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 DEWAR STREET 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.