TAP135386
SubstationMassachusetts · TOWN OF MIDDLEBOROUGH - (MA)
At a glance
TAP135386 is an electric transmission substation in Massachusetts, on TOWN OF MIDDLEBOROUGH - (MA)'s transmission network. 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #121922 | 115 kV | TOWN OF MIDDLEBOROUGH - (MA) | IN SERVICE | 4.9 mi |
| #123872 | 115 kV | — | IN SERVICE | 6.8 mi |
| #136057 | 115 kV | — | IN SERVICE | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP135386, 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 |
|---|---|---|---|---|---|---|---|
| HYDE PARK | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 4.3 yrs | 66.9 |
| HOLBROOK | Substation-Adjacent | MA | Norfolk County | 345 kV | 600 MW | 4.3 yrs | 66.7 |
| AUBURN STREET | Substation-Adjacent | MA | Norfolk County | 345 kV | 600 MW | 4.3 yrs | 66.5 |
| STOUGHTON | Substation-Adjacent | MA | Norfolk County | 345 kV | 600 MW | 4.3 yrs | 66.2 |
| WEST WALPOLE | Substation-Adjacent | MA | Norfolk County | 345 kV | 600 MW | 4.3 yrs | 66.1 |
| UNKNOWN132928 | Substation-Adjacent | MA | Norfolk County | 345 kV | 600 MW | 4.3 yrs | 65.7 |
| WEST MEDWAY | Substation-Adjacent | MA | Norfolk County | 345 kV | 600 MW | 4.3 yrs | 65.7 |
| BERRY STREET | Substation-Adjacent | MA | Norfolk County | 345 kV | 600 MW | 4.3 yrs | 65.6 |
Who owns the transmission lines at TAP135386?
The 3 connected lines listed above are owned by TOWN OF MIDDLEBOROUGH - (MA). Line voltages range from 115 kV to 115 kV. Their combined recorded length is about 11.8 miles.
How do candidate sites near TAP135386 score?
The 8 highest-scoring candidate sites within about 25 miles range from 66 to 67 on the 0–100 DC Readiness scale. They fall in Suffolk County, Norfolk 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 TAP135386 substation?
TAP135386 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 TAP135386 is at the national midpoint.
How many transmission lines connect to TAP135386 substation?
3 transmission lines terminate at or pass through TAP135386 in the HIFLD line data. The connected lines listed here run at 115 kV. Together the listed lines cover about 11.8 miles.
Who owns TAP135386 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP135386 belong to TOWN OF MIDDLEBOROUGH - (MA). GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP135386 substation located?
TAP135386 is in Massachusetts at 41.9075, -71.0546. The datacenter candidate sites closest to it are in Suffolk County, Norfolk County.
Are there datacenter candidate sites near TAP135386 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP135386. The highest-scoring is HYDE PARK at 67/100. 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, “TAP135386 substation, Massachusetts”, https://gridcensus.com/substations/massachusetts/tap135386-e599a3e8 (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 TAP135386 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.