Gilman Mill

35 Riverside Ave, Gilman, VT 5904

Plant Summary Information

Gilman Mill is ranked #39 out of 46 hydroelectric power plants in Vermont in terms of total annual net electricity generation.

Gilman Mill is comprised of 4 generators and generated 227.0 MWh during the 3-month period between September 2025 to December 2025.

Plant Name	Gilman Mill
Utility Name	Ampersand Gilman Hydro LP
Location	Essex County, VT
Initial Operation Date	January 1941
Last Update	Dec 2025
Annual Generation	2.2 GWh
Annual Consumption	7.5 k MMBtu
Ranked #10,642 out of 13,081 Power Plants Nationwide
Ranked #1,231 out of 1,311 Water Power Plants Nationwide
Ranked #88 out of 114 Vermont Power Plants
Ranked #39 out of 46 Vermont Water Power Plants
Fuel Types	Water

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Summary Information
Plant Name	Gilman Mill (10608)
Plant Address	35 Riverside Ave, Gilman, VT 5904
Utility	Ampersand Gilman Hydro LP (56467)
Latitude, Longitude	44.4122, -71.7228
Generation Dates on File	Jan 2001 to Dec 2025
Initial Operation Date	January 1941
Annual Generation	2.2 GWh
Fuel Types	Water

Federal Energy Regulatory Commission (FERC) Information
FERC Cogeneration Status	No
FERC Small Power Producer Status	No
FERC Exempt Wholesale Generator Status	No

Regulatory Information
Regulatory Status	Non-Regulated
NERC Region	NPCC
Balancing Authority	ISO New England Inc. (ISNE)
NAICS Code	Utilities (22)
Sector	IPP Non-CHP (2)
Water Source	Connecticut River
Ash Impoundment	No
Transmission / Distribution Owner	Green Mountain Power Corp (7601) VT
Grid Voltage	34.50 kV
Energy Storage	No

* Data obtained from the 2025 EIA 860 Report

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	0.8 MW
Nameplate Power Factor	0.8
Summer Capacity	0.7 MW
Winter Capacity	0.7 MW
Minimum Load	0.1 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	January 1941
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	1H

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	0.8 MW
Nameplate Power Factor	0.8
Summer Capacity	0.6 MW
Winter Capacity	0.6 MW
Minimum Load	0.1 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	January 1941
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	1H

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	1 MW
Nameplate Power Factor	0.8
Summer Capacity	0.9 MW
Winter Capacity	0.9 MW
Minimum Load	0.3 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	January 1966
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	1H

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	2.2 MW
Nameplate Power Factor	0.8
Summer Capacity	2.1 MW
Winter Capacity	2.1 MW
Minimum Load	0.2 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	March 1986
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	1H

Owner Name	Address	Generator	Ownership
*We couldn't locate any owners for this plant*

Power plants with a similar annual net generation from Water.

Rank	Plant Name	Plant Location	Annual Generation
#1221	Rocky River (SC)	Iva, SC	2.4 GWh
#1222	Sissonville Hydro	Potsdam, NY	2.4 GWh
#1223	Danbury Dam	Danbury, WI	2.3 GWh
#1224	Boltonville Hydro Associates	Boltonville, VT	2.3 GWh
#1225	Pepperell Hydro Power Plant	Pepperell, MA	2.3 GWh
#1226	San Gabriel Hydro Project	Azusa, CA	2.3 GWh
#1227	Taftville	Taftville, CT	2.2 GWh
#1228	West Danville 15	Danville, VT	2.2 GWh
#1229	Alta Powerhouse	Alta, CA	2.2 GWh
#1230	Cadys Falls	Morrisville, VT	2.2 GWh
#1232	Lochmere Hydroelectric Plant	Tilton, NH	2.1 GWh
#1233	Salmon Falls	South Berwick, ME	2.1 GWh
#1234	Deadwood Creek	Dobbins, CA	2.1 GWh
#1235	Hillsborough Hosiery	Hillsboro, NH	2.1 GWh
#1236	Manitou Springs	Manitou Spring, CO	2.0 GWh
#1237	Puueo	Hilo, HI	2.0 GWh
#1238	Kings Falls Hydroelectric	Copenhagen, NY	2.0 GWh
#1239	Tacoma	Durango, CO	1.9 GWh
#1240	Tenth Street	Norwich, CT	1.9 GWh
#1241	Graniteville Enterprise Division	Augusta, GA	1.9 GWh

Below are closest 20 power plants surrounding Gilman Mill.

Plant Name	Plant Location	Annual Generation	Distance
Berlin Gorham	Berlin, NH	101.1 GWh	27.6 mi
Boltonville Hydro Associates	Boltonville, VT	2.3 GWh	25 mi
Burgess BioPower	Berlin, NH	390.2 GWh	27.3 mi
Comerford	Monroe, NH	296.8 GWh	15 mi
Dodge Falls Associates	Bath, NH	21.6 GWh	21.8 mi
East Barnet	Barnet, VT	4.7 GWh	16.6 mi
Golden Solar	St. Johnsbury, VT	3.6 GWh	12.4 mi
Gorham	Gorham, NH	8.4 GWh	26 mi
Great Falls (VT)	Lyndon, VT	1.9 GWh	14.9 mi
GSPP Gilman, LLC	Lunenburg, VT	3.0 GWh	0.4 mi
Jericho Power	Berlin, NH	22.5 GWh	24.8 mi
Lost Nation	Groveton, NH	422.0 MWh	16.9 mi
Mcindoes	Barnet, VT	39.1 GWh	19.7 mi
NE Renewable Whitefield, LLC	Whitefield, NH	59.3 GWh	9.5 mi
Pontook Hydro Facility	Dummer, NH	50.9 GWh	27.9 mi
Ryegate Associates, LLC	East Ryegate, VT	157.6 GWh	21.5 mi
S C Moore	Littleton, NH	254.7 GWh	9.2 mi
Sheffield Wind	Sheffield, VT	56.9 GWh	26.1 mi
Smith (NH)	Berlin, NH	87.5 GWh	27.2 mi
West Danville 15	Danville, VT	2.2 GWh	23 mi