TAP140856
SubstationConnecticut
At a glance
TAP140856 is an electric transmission substation in Connecticut. 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 |
|---|---|---|---|---|
| #114109 | 115 kV | — | IN SERVICE | 2.1 mi |
| #116584 | 115 kV | — | IN SERVICE | 1.3 mi |
| #146553 | 115 kV | — | IN SERVICE | 0.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP140856, 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 |
|---|---|---|---|---|---|---|---|
| BRIDGEPORT RESCO | Substation-Adjacent | CT | Greater Bridgeport Planning Region | 345 kV | 600 MW | 4.3 yrs | 71.7 |
| NEW HAVEN HARBOR | Substation-Adjacent | CT | South Central Connecticut Planning Region | 345 kV | 600 MW | 4.3 yrs | 68.8 |
| PLUMTREE | Substation-Adjacent | CT | Western Connecticut Planning Region | 345 kV | 600 MW | 4.3 yrs | 68.2 |
| DEVON | Substation-Adjacent | CT | Greater Bridgeport Planning Region | 115 kV | 100 MW | 4.3 yrs | 65.0 |
| WATERSIDE | Substation-Adjacent | CT | Westchester County | 115 kV | 100 MW | 4.3 yrs | 63.9 |
| SHEPAUG | Substation-Adjacent | CT | Naugatuck Valley Planning Region | 115 kV | 100 MW | 4.3 yrs | 63.9 |
| FREIGHT | Substation-Adjacent | CT | Naugatuck Valley Planning Region | 115 kV | 100 MW | 4.3 yrs | 63.5 |
| ELM WEST | Substation-Adjacent | CT | South Central Connecticut Planning Region | 115 kV | 100 MW | 4.3 yrs | 63.4 |
How do candidate sites near TAP140856 score?
The 8 highest-scoring candidate sites within about 25 miles range from 63 to 72 on the 0–100 DC Readiness scale. They fall in Greater Bridgeport Planning Region, South Central Connecticut Planning Region, Western Connecticut Planning Region, Westchester County. The Connecticut average across 919 scored sites is 56.7. 171 of those Connecticut sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP140856 substation?
TAP140856 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 TAP140856 is at the national midpoint.
How many transmission lines connect to TAP140856 substation?
3 transmission lines terminate at or pass through TAP140856 in the HIFLD line data. The connected lines listed here run at 115 kV. Together the listed lines cover about 3.7 miles.
Where is TAP140856 substation located?
TAP140856 is in Connecticut at 41.1681, -73.2081. The datacenter candidate sites closest to it are in Greater Bridgeport Planning Region, South Central Connecticut Planning Region, Western Connecticut Planning Region.
Are there datacenter candidate sites near TAP140856 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP140856. The highest-scoring is BRIDGEPORT RESCO at 72/100. Across Connecticut, the average DC Readiness score is 56.7.
More in Connecticut
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, “TAP140856 substation, Connecticut”, https://gridcensus.com/substations/connecticut/tap140856-0b06b0fb (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 TAP140856 substation, Connecticut 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.