PIERCE MILLS
SubstationVermont
At a glance
PIERCE MILLS is an electric transmission substation in Vermont. It is classified as unclassified and connects 0 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.
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of PIERCE MILLS, 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 |
|---|---|---|---|---|---|---|---|
| MONROE | Substation-Adjacent | NH | Caledonia County | 450 kV | 600 MW | 4.3 yrs | 65.0 |
| TAP136713 | Substation-Adjacent | NH | Caledonia County | 230 kV | 300 MW | 4.3 yrs | 60.6 |
| UNKNOWN132759 | Substation-Adjacent | NH | Coos County | 115 kV | 100 MW | 4.3 yrs | 57.3 |
| UNKNOWN133765 | Substation-Adjacent | VT | Caledonia County | 115 kV | 100 MW | 4.3 yrs | 57.1 |
| ST JOHNSBURY | Substation-Adjacent | VT | Caledonia County | 115 kV | 100 MW | 4.3 yrs | 57.1 |
| TAP136699 | Substation-Adjacent | VT | Caledonia County | 115 kV | 100 MW | 4.3 yrs | 56.3 |
| IRASBURG | Substation-Adjacent | VT | Orleans County | 115 kV | 100 MW | 4.3 yrs | 56.3 |
| TAP137086 | Substation-Adjacent | NH | Caledonia County | 115 kV | 100 MW | 4.3 yrs | 56.1 |
How do candidate sites near PIERCE MILLS score?
The 8 highest-scoring candidate sites within about 25 miles range from 56 to 65 on the 0–100 DC Readiness scale. They fall in Caledonia County, Coos County, Orleans County. The Vermont average across 758 scored sites is 54.3. 82 of those Vermont sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to PIERCE MILLS substation?
0 transmission lines terminate at or pass through PIERCE MILLS in the HIFLD line data.
Where is PIERCE MILLS substation located?
PIERCE MILLS is in Vermont at 44.4654, -72.0048. The datacenter candidate sites closest to it are in Caledonia County, Coos County, Orleans County.
Are there datacenter candidate sites near PIERCE MILLS substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of PIERCE MILLS. The highest-scoring is MONROE at 65/100. Across Vermont, the average DC Readiness score is 54.3.
More in Vermont
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, “PIERCE MILLS substation, Vermont”, https://gridcensus.com/substations/vermont/pierce-mills-af48af39 (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 PIERCE MILLS substation, Vermont 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.