Cobble Mountain

Old Granville Road, Granville, MA 1034

Plant Summary Information

Cobble Mountain is ranked #19 out of 29 hydroelectric power plants in Massachusetts in terms of total annual net electricity generation.

Cobble Mountain is comprised of 3 generators and generated 2.2 GWh during the 3-month period between September 2023 to December 2023.

Plant Name	Cobble Mountain
Utility Name	City of Holyoke Gas and Electric Dept.
Location	Hampden County, MA
Initial Operation Date	January 1930
Last Update	Dec 2023
Annual Generation	10.5 GWh
Annual Consumption	38.6 k MMBtu
Ranked #5,828 out of 11,852 Power Plants Nationwide
Ranked #951 out of 1,371 Water Power Plants Nationwide
Ranked #72 out of 598 Massachusetts Power Plants
Ranked #19 out of 29 Massachusetts Water Power Plants
Fuel Types	Water

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Summary Information
Plant Name	Cobble Mountain (1630)
Plant Address	Old Granville Road, Granville, MA 1034
Utility	City of Holyoke Gas and Electric Dept. (8776)
Latitude, Longitude	42.11711, -72.86466
Generation Dates on File	Jan 2001 to Dec 2023
Initial Operation Date	January 1930
Annual Generation	10.5 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	Regulated
NERC Region	NPCC
Balancing Authority	ISO New England Inc. (ISNE)
NAICS Code	Utilities (22)
Sector	Electric Utility (1)
Water Source	Cobble Mountain Reservoir
Ash Impoundment	No
Transmission / Distribution Owner	Western Massachusetts Electric Company (20455) MA
Grid Voltage	69.00 kV
Energy Storage	No

* Data obtained from the 2023 EIA 860 Report

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Wholly Owned by Other Entity
Nameplate Capacity	13 MW
Nameplate Power Factor	0.8
Summer Capacity	12.9 MW
Winter Capacity	13 MW
Minimum Load	3 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1930
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Time From Cold Shutdown To Full Load	10M

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Wholly Owned by Other Entity
Nameplate Capacity	7 MW
Nameplate Power Factor	0.8
Summer Capacity	6.8 MW
Winter Capacity	6.9 MW
Minimum Load	1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1930
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Time From Cold Shutdown To Full Load	10M

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Wholly Owned by Other Entity
Nameplate Capacity	13 MW
Nameplate Power Factor	0.8
Summer Capacity	12.9 MW
Winter Capacity	13 MW
Minimum Load	3 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1930
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Time From Cold Shutdown To Full Load	10M

Owner Name	Address	Generator	Ownership
Springfield Water & Sewer Comm	P O Box 995, Springfield, MA 1101	Generator 1	100.00%
Springfield Water & Sewer Comm	P O Box 995, Springfield, MA 1101	Generator 2	100.00%
Springfield Water & Sewer Comm	P O Box 995, Springfield, MA 1101	Generator 3	100.00%

Power plants with a similar annual net generation from Water.

Rank	Plant Name	Plant Location	Annual Generation
#941	Brainerd Public Utilities	Brainerd, MN	10.9 GWh
#942	Gross Hydro Plant	Boulder, CO	10.8 GWh
#943	New Hogan Power Plant	Valley Springs, CA	10.8 GWh
#944	Shavano Falls Hydro	Montrose, CO	10.8 GWh
#945	Indian Orchard	Indian Orchard, MA	10.6 GWh
#946	Boulder Canyon Hydro	Boulder, CO	10.6 GWh
#947	Big Creek Water Works	Hyampom, CA	10.6 GWh
#948	Whitman	Ketchikan, AK	10.6 GWh
#949	Mill Creek 3	Mill Creek, CA	10.5 GWh
#950	Mink Creek Hydro	Preston, ID	10.5 GWh
#952	Dietrich Drop	Shoshone, ID	10.5 GWh
#953	Pittsford	Pittsford, VT	10.4 GWh
#954	Rochester Hydro	Mazeppa, MN	10.3 GWh
#955	Ladysmith Dam	Ladysmith, WI	10.3 GWh
#956	Johnson Falls	Town of Stephenson, WI	10.3 GWh
#957	Seneca Falls Hydroelectric Project	Seneca Falls, NY	10.2 GWh
#958	Quail Creek Hydro Plant #1	Hurricane, UT	10.2 GWh
#959	International Paper Livermore Hydro	Livermore Falls, ME	10.2 GWh
#960	Marble Falls	Marble Falls, TX	10.2 GWh
#961	Upper Beaver	Beaver, UT	10.2 GWh

Below are closest 20 power plants surrounding Cobble Mountain.

Plant Name	Plant Location	Annual Generation	Distance
CED Westfield Solar, LLC	Westfield, MA	3.3 GWh	6.9 mi
CES Agawam Tuckahoe Solar Hybrid	Agawam, MA	7.0 GWh	9.8 mi
ENGIE 2019 ProjectCo-MA1, LLC	Agawam, MA	5.4 GWh	12 mi
Goodwin Hydroelectric	W. Hartland, CT	12.9 GWh	11.9 mi
Goose Pond Solar	Southwick, MA	7.0 GWh	8.7 mi
GSPP Terrawatt Westfield LLC CSG	Westfield, MA	5.9 GWh	8.2 mi
Holiday Hill Community Wind	Russell, MA	9.5 GWh	6.6 mi
Holyoke Solar Cooperative at Mueller	Holyoke, MA	3.9 GWh	10.6 mi
Indian River Hydro	Russell, MA	1.8 GWh	4.9 mi
International Paper Woronoco Mill	Woronoco, MA	6.2 GWh	3.7 mi
Kearsarge Southwick LLC	Southwick, MA	5.5 GWh	8.3 mi
Route 57 Solar	Agawam, MA	2.1 GWh	11 mi
Southampton Solar PV	Southampton, MA	2.6 GWh	9.8 mi
Southwick Solar PV	Southwick, MA	8.3 GWh	7.5 mi
Sunpin Blandford	Southwick, MA	6.2 GWh	9.1 mi
Syncarpha Blandford Hybrid CSG	Blandford, MA	8.1 GWh	7.6 mi
Texon Hydroelectric Project	Russell, MA	6.1 GWh	7.2 mi
Tolland Solar NG LLC	Tolland, MA	4.8 GWh	10.3 mi
Town of Otis Wind Energy Project	Otis, MA	2.8 GWh	11.2 mi
Twiss Street Solar	Westfield, MA	2.2 GWh	6.4 mi