TAP135429
SubstationMassachusetts · NSTAR ELECTRIC COMPANY
TAP135429 is an electric transmission substation in Massachusetts, operated by NSTAR ELECTRIC COMPANY. It is classified as sub-transmission (115 kv) and connects 3 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 |
|---|---|---|---|---|
| #25906 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 0.0 mi |
| #28963 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 0.1 mi |
| #56879 | 115 kV | NSTAR ELECTRIC COMPANY | IN SERVICE | 4.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP135429, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN133456 | Substation-Adjacent | MA | Barnstable County | 345 kV | 600 MW | 3.5 yrs | 61.3 |
| Greenfield (UNKNOWN133456 - TAP135423) | Greenfield | MA | Barnstable County | 345 kV | 600 MW | 3.5 yrs | 59.1 |
| UNKNOWN133715 | Substation-Adjacent | MA | Barnstable County | 115 kV | 100 MW | 3.5 yrs | 59.0 |
| Barnstable Landfill | Brownfield | MA | Barnstable | — | 4 MW | — | 58.1 |
| UNKNOWN133716 | Substation-Adjacent | MA | Barnstable County | 115 kV | 100 MW | 3.5 yrs | 57.0 |
| UNKNOWN133721 | Substation-Adjacent | MA | Barnstable County | 115 kV | 100 MW | 3.5 yrs | 56.5 |
| ORLEANS | Substation-Adjacent | MA | Barnstable County | 115 kV | 100 MW | 3.5 yrs | 55.9 |
| TAP135425 | Substation-Adjacent | MA | Barnstable County | 115 kV | 100 MW | 3.5 yrs | 55.4 |
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 TAP135429 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.