S D Warren Westbrook

89 Cumberland St, Westbrook, ME 4098

Plant Summary Information

S D Warren Westbrook is ranked #31 out of 50 hydroelectric power plants in Maine in terms of total annual net electricity generation.

S D Warren Westbrook is comprised of 16 generators and generated 2.9 GWh during the 3-month period between September 2025 to December 2025.

Plant Name	S D Warren Westbrook
Utility Name	Relevate Power Management LLC
Location	Cumberland County, ME
Initial Operation Date	January 1903
Last Update	Dec 2025
Annual Generation	15.0 GWh
Annual Consumption	51.1 k MMBtu
Ranked #5,694 out of 13,081 Power Plants Nationwide
Ranked #773 out of 1,311 Water Power Plants Nationwide
Ranked #73 out of 236 Maine Power Plants
Ranked #31 out of 50 Maine Water Power Plants
Fuel Types	Water
Previous Operators	S D Warren Co.- Westbrook (2013 to 2020) Sappi North America Westbrook Mill (2021 to 2021) Dichotomy Power, LLC (2022 to 2022) Elevate Power Management LLC (2023 to 2023) Relevate Power Management LLC (2024 to 2025)

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Monthly Net Generation for S D Warren Westbrook

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Monthly Plant Fuel Consumption for S D Warren Westbrook

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S D Warren Westbrook Details

Summary Information
Plant Name	S D Warren Westbrook (50447)
Plant Address	89 Cumberland St, Westbrook, ME 4098
Utility	Relevate Power Management LLC (66098)
Latitude, Longitude	43.68486, -70.35315
Generation Dates on File	Jan 2001 to Dec 2025
Initial Operation Date	January 1903
Annual Generation	15.0 GWh
Fuel Types	Water

Federal Energy Regulatory Commission (FERC) Information
FERC Cogeneration Status	No
FERC Small Power Producer Status	Yes
FERC Small Power Producer Docket Number	81-67-002
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 CHP (3)
Water Source	Presumpscot River
Ash Impoundment	No
Transmission / Distribution Owner	Central Maine Power Co (3266) ME
Grid Voltage	34.50 kV
Energy Storage	No

* Data obtained from the 2025 EIA 860 Report

Generator GEN1 Details Operating January 1903

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.6 MW
Nameplate Power Factor	0.8
Summer Capacity	0.6 MW
Winter Capacity	0.6 MW
Minimum Load	0.2 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1903
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GEN2 Details Operating January 1903

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.6 MW
Nameplate Power Factor	0.8
Summer Capacity	0.6 MW
Winter Capacity	0.6 MW
Minimum Load	0.2 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1903
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GEN3 Details Operating January 1903

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.6 MW
Nameplate Power Factor	0.8
Summer Capacity	0.6 MW
Winter Capacity	0.6 MW
Minimum Load	0.2 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1903
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GEN4 Details Operating January 1913

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.8 MW
Nameplate Power Factor	0.8
Summer Capacity	0.8 MW
Winter Capacity	0.8 MW
Minimum Load	0.3 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1913
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GEN5 Details Operating January 1913

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.8 MW
Nameplate Power Factor	0.8
Summer Capacity	0.8 MW
Winter Capacity	0.8 MW
Minimum Load	0.3 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1913
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GEN6 Details Operating January 1913

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.8 MW
Nameplate Power Factor	0.8
Summer Capacity	0.8 MW
Winter Capacity	0.8 MW
Minimum Load	0.3 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1913
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GEN7 Details Operating January 1940

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.6 MW
Nameplate Power Factor	0.8
Summer Capacity	0.6 MW
Winter Capacity	0.6 MW
Minimum Load	0.2 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1940
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H

Generator GN11 Details Operating January 1940

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.6 MW
Nameplate Power Factor	0.8
Summer Capacity	0.6 MW
Winter Capacity	0.6 MW
Minimum Load	0.2 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1940
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GN12 Details Operating January 1940

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.2 MW
Nameplate Power Factor	0.8
Summer Capacity	0.2 MW
Winter Capacity	0.2 MW
Minimum Load	0.1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1940
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GN13 Details Operating January 1940

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.2 MW
Nameplate Power Factor	0.8
Summer Capacity	0.2 MW
Winter Capacity	0.2 MW
Minimum Load	0.1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1940
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GN14 Details Operating January 1940

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.2 MW
Nameplate Power Factor	0.8
Summer Capacity	0.2 MW
Winter Capacity	0.2 MW
Minimum Load	0.1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1940
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GN15 Details Operating January 1940

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.2 MW
Nameplate Power Factor	0.8
Summer Capacity	0.2 MW
Winter Capacity	0.2 MW
Minimum Load	0.1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1940
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GN16 Details Operating January 1940

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.5 MW
Nameplate Power Factor	0.8
Summer Capacity	0.5 MW
Winter Capacity	0.5 MW
Minimum Load	0.2 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1940
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GN17 Details Operating January 1940

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	0.5 MW
Nameplate Power Factor	0.8
Summer Capacity	0.5 MW
Winter Capacity	0.5 MW
Minimum Load	0.2 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1940
Combined Heat & Power	No
Sector Name	IPP CHP (3)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator GEN9 Details Out of Service January 1982

Technology	Wood/Wood Waste Biomass
Prime Mover	Steam Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	47.5 MW
Nameplate Power Factor	0.85
Summer Capacity	40.5 MW
Winter Capacity	47.5 MW
Minimum Load	5 MW
Uprate/Derate Completed	No
Status	Out of Service
First Operation Date	January 1982

Combined Heat & Power	Yes
Sector Name	IPP CHP (3)
Topping Or Bottoming	B
Energy Source	Wood/Wood Waste Solids / Bituminous Coal / Residual Fuel Oil / Distillate Fuel Oil
Startup Source	Residual Fuel Oil / Wood/Wood Waste Solids
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	OVER
Pulverized Coal Technology	Yes
Subcritical Technology	Yes
Multiple Fuels	Yes
Cofire Fuels	Yes
Switch Between Oil And Natural Gas	No

Multifuel Details
Cofire Energy Source	WDS / BIT / RFO / DFO

Generator GN10 Details Out of Service October 1985

Technology	Wood/Wood Waste Biomass
Prime Mover	Steam Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	591_:_UN_PRID_CRN115_SWBK
RTO ISO Location Designation For Reporting Wholesale Sales Data	591_:_UN_PRID_CRN115_SWBK
Nameplate Capacity	15 MW
Nameplate Power Factor	0.85
Summer Capacity	15.8 MW
Winter Capacity	15.8 MW
Minimum Load	5 MW
Uprate/Derate Completed	No
Status	Out of Service
First Operation Date	October 1985
Combined Heat & Power	Yes

Sector Name	IPP CHP (3)
Topping Or Bottoming	B
Energy Source	Wood/Wood Waste Solids / Bituminous Coal / Residual Fuel Oil / Distillate Fuel Oil
Startup Source	Residual Fuel Oil / Wood/Wood Waste Solids
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	OVER
Pulverized Coal Technology	Yes
Subcritical Technology	Yes
Supercritical Technology	No
Multiple Fuels	Yes
Cofire Fuels	Yes
Switch Between Oil And Natural Gas	No

Multifuel Details
Cofire Energy Source	WDS / BIT / RFO / DFO

S D Warren Westbrook Plant Owners

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

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#767	Drop 3 (CA)	Holtville, CA	15.3 GWh
#768	Olsen	Whitmore, CA	15.3 GWh
#769	Deer Creek PH	Nevada City, CA	15.2 GWh
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#771	Drum 1	Alta, CA	15.1 GWh
#772	Oakdale	Monticello, IN	15.0 GWh
#774	Washoe	Verdi, NV	14.9 GWh
#775	Jones Fork	Fresh Pond, CA	14.9 GWh
#776	Murphys	Murphys, CA	14.8 GWh
#777	Eagle Point	Eagle Point, OR	14.8 GWh
#778	Vinelands Power Plant	Palisade, CO	14.7 GWh
#779	Flat Rock	Fine, NY	14.6 GWh
#780	Copper Dam Plant	Hood River, OR	14.6 GWh
#781	Guernsey	Guernsey, WY	14.6 GWh
#782	Spanish Fork	Spanish Fork, UT	14.5 GWh
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Nearby Power Plants

Below are closest 20 power plants surrounding S D Warren Westbrook.

Plant Name	Plant Location	Annual Generation	Distance
Baldwin (ME)	West Baldwin, ME	9.6 GWh	21.5 mi
Bonny Eagle	Hollis, ME	31.3 GWh	12.9 mi
BWC Beech Ridge Brook, LLC	Scarborough, ME	7.7 GWh	5.6 mi
Cape Gas Turbine	Portland, ME	752.0 MWh	5.7 mi
Cataract Hydro	Saco, ME	23.1 GWh	13.9 mi
Dynamic - Gray Solar	Gray, ME	5.2 GWh	14.5 mi
Gorham Solar 1 (CSG)	Gorham, ME	6.6 GWh	3.3 mi
MEVS Waterhouse	Scarborogh, ME	3.1 GWh	7.2 mi
Naples	Naples, ME	3.0 GWh	22.7 mi
North Gorham	Gorham, ME	6.5 GWh	9.5 mi
Pejepscot Hydroelectric Project	Topsham, ME	49.7 GWh	25 mi
Regional Waste Systems	Portland, ME	87.1 GWh	2.2 mi
Roosevelt Trail	Windham, ME	1.4 GWh	12.9 mi
Shaker	Gray, ME	6.2 GWh	14.5 mi
Skelton	Dayton, ME	77.2 GWh	12.9 mi
Standish	Standish, ME	7.3 GWh	10.7 mi
Waterboro	East Waterboro, ME	3.3 GWh	19.4 mi
West Buxton	Buxton, ME	20.6 GWh	12.5 mi
Westbrook Energy Center Power Plant	Westbrook, ME	3.5 TWh	2.2 mi
William F Wyman Hybrid	Yarmouth, ME	338.6 GWh	10.8 mi