ESSEX HILLTOP
SubstationVermont · GREEN MOUNTAIN POWER CORP
At a glance
ESSEX HILLTOP is an electric transmission substation in Vermont, on GREEN MOUNTAIN POWER CORP's transmission network. It is classified as distribution (<69 kv) and connects 2 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 |
|---|---|---|---|---|
| #119937 | 35 kV | GREEN MOUNTAIN POWER CORP | IN SERVICE | 3.3 mi |
| #106451 | — | GREEN MOUNTAIN POWER CORP | — | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of ESSEX HILLTOP, 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 |
|---|---|---|---|---|---|---|---|
| South Burlington Landfill | Brownfield | VT | Chittenden | — | 2 MW | 4.3 yrs | 67.4 |
| NEW HAVEN | Substation-Adjacent | VT | Addison County | 345 kV | 600 MW | 4.3 yrs | 65.6 |
| OZ Chittenden | Greenfield | VT | Chittenden | — | — | 4.3 yrs | 63.7 |
| ESSEX | Substation-Adjacent | VT | Chittenden County | 115 kV | 100 MW | 4.3 yrs | 63.0 |
| EAST AVENUE | Substation-Adjacent | VT | Chittenden County | 115 kV | 100 MW | 4.3 yrs | 62.9 |
| WILLISTON | Substation-Adjacent | VT | Chittenden County | 115 kV | 100 MW | 4.3 yrs | 62.9 |
| WILLISTON | Substation-Adjacent | VT | Chittenden County | 115 kV | 100 MW | 4.3 yrs | 62.8 |
| QUEEN CITY | Substation-Adjacent | VT | Chittenden County | 115 kV | 100 MW | 4.3 yrs | 62.8 |
How does ESSEX HILLTOP compare with other substations in Vermont?
Vermont has 317 substation records in HIFLD, of which 131 carry a station name; the rest are unnamed tap points, risers and line ends. 60 named substations in the state are in ESSEX HILLTOP's below 69 kV band (46% of named stations). 41 sit in a higher band. 5 named substations in Vermont operate at 345 kV or above. The highest voltage recorded in the state is 345 kV, and the state median is 46 kV.
Who owns the transmission lines at ESSEX HILLTOP?
The 2 connected lines listed above are owned by GREEN MOUNTAIN POWER CORP. Line voltages range from 35 kV to 35 kV. Their combined recorded length is about 3.4 miles.
How do candidate sites near ESSEX HILLTOP score?
The 8 highest-scoring candidate sites within about 25 miles range from 63 to 67 on the 0–100 DC Readiness scale. They fall in Chittenden, Addison County, Chittenden 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
What voltage is ESSEX HILLTOP substation?
ESSEX HILLTOP has a maximum voltage of 35 kV. That places it in the below 69 kV band. The median named US substation in this dataset is 115 kV, so ESSEX HILLTOP is below the national midpoint.
How many transmission lines connect to ESSEX HILLTOP substation?
2 transmission lines terminate at or pass through ESSEX HILLTOP in the HIFLD line data. The connected lines listed here run at 35 kV. Together the listed lines cover about 3.4 miles.
Who owns ESSEX HILLTOP substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at ESSEX HILLTOP belong to GREEN MOUNTAIN POWER CORP. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is ESSEX HILLTOP substation located?
ESSEX HILLTOP is in Vermont at 44.4826, -73.1161. The datacenter candidate sites closest to it are in Chittenden, Addison County, Chittenden County.
Are there datacenter candidate sites near ESSEX HILLTOP substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of ESSEX HILLTOP. The highest-scoring is South Burlington Landfill at 67/100. Across Vermont, the average DC Readiness score is 54.3.
Other 35 kV substations in Vermont
- MISS PAPER· 4 lines
- IRASVILLE· 3 lines
- MARSHFIELD PLANT 6· 3 lines
- NORTHFIELD· 3 lines
- COLLEGE· 2 lines
- JOHNSON· 2 lines
- MONTPELIER· 2 lines
- SAND ROAD· 2 lines
- All named substations in Vermont· 131 stations
- Datacenter candidate sites in Vermont· 758 sites
- Brownfield and retired plant sites in Vermont
- Substations by state
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, “ESSEX HILLTOP substation, Vermont”, https://gridcensus.com/substations/vermont/essex-hilltop-4a557086 (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 ESSEX HILLTOP 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.