TAP140681
SubstationMassachusetts
At a glance
TAP140681 is an electric transmission substation in Massachusetts. 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
Ownership
No owner is recorded for the lines that connect here.
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #125812 | 115 kV | — | IN SERVICE | 1.4 mi |
| #129770 | 115 kV | — | IN SERVICE | 2.5 mi |
| #136378 | 115 kV | — | IN SERVICE | 1.9 mi |
| #144569 | 115 kV | — | IN SERVICE | 2.5 mi |
| #149220 | 115 kV | — | IN SERVICE | 1.8 mi |
| #149237 | 115 kV | — | IN SERVICE | 1.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP140681, 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 |
|---|---|---|---|---|---|---|---|
| K STREET | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 4.3 yrs | 72.4 |
| MYSTIC | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 4.3 yrs | 72.4 |
| UNKNOWN133682 | Substation-Adjacent | MA | Middlesex County | 450 kV | 600 MW | 4.3 yrs | 68.3 |
| EAGLE | Substation-Adjacent | NH | Hillsborough County | 345 kV | 600 MW | 4.3 yrs | 68.2 |
| KINGSTON STREET | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 4.3 yrs | 68.2 |
| NORTH CAMBRIDGE | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 4.3 yrs | 68.1 |
| WAKEFIELD JUNCTION | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 4.3 yrs | 67.9 |
| UNKNOWN132744 | Substation-Adjacent | NH | Hillsborough County | 345 kV | 600 MW | 4.3 yrs | 67.6 |
How do candidate sites near TAP140681 score?
The 8 highest-scoring candidate sites within about 25 miles range from 68 to 72 on the 0–100 DC Readiness scale. They fall in Suffolk County, Middlesex County, Hillsborough County. The Massachusetts average across 1,861 scored sites is 54.2. 305 of those Massachusetts sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP140681 substation?
TAP140681 has a maximum voltage of 115 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so TAP140681 is at the national midpoint.
How many transmission lines connect to TAP140681 substation?
3 transmission lines terminate at or pass through TAP140681 in the HIFLD line data. The connected lines listed here run at 115 kV. Together the listed lines cover about 11.5 miles.
Where is TAP140681 substation located?
TAP140681 is in Massachusetts at 42.5179, -71.1501. The datacenter candidate sites closest to it are in Suffolk County, Middlesex County, Hillsborough County.
Are there datacenter candidate sites near TAP140681 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP140681. The highest-scoring is K STREET at 72/100. Across Massachusetts, the average DC Readiness score is 54.2.
More in Massachusetts
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “TAP140681 substation, Massachusetts”, https://gridcensus.com/substations/massachusetts/tap140681-6b892865 (data as of June 29, 2026).
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
Every site and score for TAP140681 substation, Massachusetts is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.