Conowingo

2569 Shures Landing Rd., Darlington, MD 21034

Plant Summary Information

Conowingo is ranked #21 out of 1,374 hydroelectric power plants nationwide in terms of total annual net electricity generation.

Conowingo is comprised of 11 generators and generated 840.4 GWh during the 3-month period between November 2023 to February 2024.

Plant Name	Conowingo
Utility Name	Constellation Power, Inc
Location	Harford County, MD
Initial Operation Date	March 1928
Last Update	Feb 2024
Annual Generation	2.0 TWh
Annual Consumption	6.9 M MMBtu
Ranked #523 out of 11,455 Power Plants Nationwide
Ranked #21 out of 1,374 Water Power Plants Nationwide
Ranked #5 out of 165 Maryland Power Plants
Ranked #1 out of 2 Maryland Water Power Plants
Fuel Types	Water
Previous Operator	Exelon Power (2013 to 2021) Constellation Power, Inc (2022 to 2022)

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Monthly Net Generation for Conowingo

Conowingo Details

Summary Information
Plant Name	Conowingo (1574)
Plant Address	2569 Shures Landing Rd. Darlington, MD 21034
Utility	Constellation Power, Inc (6035)
Latitude, Longitude	39.6572, -76.1752
Generation Dates on File	Jan 2001 to Feb 2024
Initial Operation Date	March 1928
Annual Generation	2.0 TWh
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	RFC
Balancing Authority	PJM Interconnection, LLC (PJM)
NAICS Code	Utilities (22)
Sector	IPP Non-CHP (2)
Water Source	Susquehanna River
Ash Impoundment	No
Transmission / Distribution Owner	PECO Energy Co (14940) PA
Grid Voltage	220.00 kV
Energy Storage	No

* Data obtained from the 2022 EIA 860 Report

Generator 1 Details Operating March 1928

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	CONOWING13 KV GEN1
RTO ISO Location Designation For Reporting Wholesale Sales Data	CONOWING13 KV GEN1
Nameplate Capacity	45 MW
Nameplate Power Factor	0.9
Summer Capacity	48 MW
Winter Capacity	48 MW
Minimum Load	5 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	March 1928
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	10M
Multiple Fuels	No

Generator 2 Details Operating March 1928

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	CONOWING13 KV GEN2
RTO ISO Location Designation For Reporting Wholesale Sales Data	CONOWING13 KV GEN2
Nameplate Capacity	36 MW
Nameplate Power Factor	0.9
Summer Capacity	36 MW
Winter Capacity	36 MW
Minimum Load	5 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	March 1928
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	10M
Multiple Fuels	No

Generator 3 Details Operating March 1928

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	CONOWING13 KV GEN3
RTO ISO Location Designation For Reporting Wholesale Sales Data	CONOWING13 KV GEN3
Nameplate Capacity	48 MW
Nameplate Power Factor	0.9
Summer Capacity	48 MW
Winter Capacity	48 MW
Minimum Load	5 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	March 1928
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	10M
Multiple Fuels	No

Generator 4 Details Operating April 1928

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	CONOWING13 KV GEN4
RTO ISO Location Designation For Reporting Wholesale Sales Data	CONOWING13 KV GEN4
Nameplate Capacity	47.7 MW
Nameplate Power Factor	0.9
Summer Capacity	48 MW
Winter Capacity	48 MW
Minimum Load	5 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	April 1928
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	10M
Multiple Fuels	No

Generator 5 Details Operating June 1928

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	CONOWING13 KV GEN5
RTO ISO Location Designation For Reporting Wholesale Sales Data	CONOWING13 KV GEN5
Nameplate Capacity	36 MW
Nameplate Power Factor	0.9
Summer Capacity	36 MW
Winter Capacity	36 MW
Minimum Load	5 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	June 1928
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	10M
Multiple Fuels	No

Generator 7 Details Operating June 1928

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	CONOWING13 KV UNIT07
RTO ISO Location Designation For Reporting Wholesale Sales Data	CONOWING13 KV UNIT07
Nameplate Capacity	48 MW
Nameplate Power Factor	0.9
Summer Capacity	48 MW
Winter Capacity	48 MW
Minimum Load	5 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	June 1928
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	10M
Multiple Fuels	No

Generator 6 Details Operating July 1928

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	CONOWING13 KV GEN6
RTO ISO Location Designation For Reporting Wholesale Sales Data	CONOWING13 KV GEN6
Nameplate Capacity	47.7 MW
Nameplate Power Factor	0.9
Summer Capacity	48 MW
Winter Capacity	48 MW
Minimum Load	5 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	July 1928
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	10M
Multiple Fuels	No

Generator 8 Details Operating March 1964

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	CONOWING13 KV GEN8
RTO ISO Location Designation For Reporting Wholesale Sales Data	CONOWING13 KV GEN8
Nameplate Capacity	55.6 MW
Nameplate Power Factor	0.9
Summer Capacity	65 MW
Winter Capacity	65 MW
Minimum Load	30 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	March 1964
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	10M
Multiple Fuels	No

Generator 9 Details Operating March 1964

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	CONOWING13 KV GEN9
RTO ISO Location Designation For Reporting Wholesale Sales Data	CONOWING13 KV GEN9
Nameplate Capacity	55.6 MW
Nameplate Power Factor	0.9
Summer Capacity	65 MW
Winter Capacity	65 MW
Minimum Load	30 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	March 1964
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	10M
Multiple Fuels	No

Generator 10 Details Operating May 1964

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	CONOWING13 KV G10
RTO ISO Location Designation For Reporting Wholesale Sales Data	CONOWING13 KV G10
Nameplate Capacity	55.6 MW
Nameplate Power Factor	0.9
Summer Capacity	65 MW
Winter Capacity	65 MW
Minimum Load	30 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	May 1964
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	10M
Multiple Fuels	No

Generator 11 Details Operating May 1964

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
RTO ISO LMP Node Designation	CONOWING13 KV G11
RTO ISO Location Designation For Reporting Wholesale Sales Data	CONOWING13 KV G11
Nameplate Capacity	55.6 MW
Nameplate Power Factor	0.9
Summer Capacity	65 MW
Winter Capacity	65 MW
Minimum Load	30 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	May 1964
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	10M
Multiple Fuels	No

Conowingo Plant Owners

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

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#13	Wells	Pateros, WA	3.7 TWh
#14	Boundary	Metaline, WA	3.1 TWh
#15	Wilson Dam	Muscle Shoals, AL	2.4 TWh
#16	Oahe	Pierre, SD	2.3 TWh
#17	Libby	Libby, MT	2.2 TWh
#18	Shasta	Redding, CA	2.2 TWh
#19	Rock Island	Wenatchee, WA	2.1 TWh
#20	Dworshak	Ahsahka, ID	2.1 TWh
#22	Garrison	Riverside, ND	2.0 TWh
#23	Noxon Rapids	Noxon, MT	1.8 TWh
#24	Lower Monumental	Kahlotus, WA	1.7 TWh
#25	Lower Granite	Pomeroy, WA	1.7 TWh
#26	Little Goose	Dayton, WA	1.7 TWh
#27	Edward C Hyatt	Oroville, CA	1.7 TWh
#28	Brownlee	Cambridge, ID	1.7 TWh
#29	Colgate	Dobbins, CA	1.6 TWh
#30	Fort Randall	Pickstown, SD	1.6 TWh
#31	Hells Canyon	Oxbow, OR	1.6 TWh

Nearby Power Plants

Below are closest 20 power plants surrounding Conowingo.

Plant Name	Plant Location	Annual Generation	Distance
APG New Chesapeake	Aberdeen, MD	4.4 GWh	11.4 mi
APG Old Bayside	Aberdeen, MD	3.3 GWh	11 mi
Archdiocese of Baltimore J	Perryman, MD	3.7 GWh	14.8 mi
Archdiocese of Baltimore L	Perryman, MD	3.7 GWh	14.8 mi
Baltimore City B	Perryman, MD	3.4 GWh	15.5 mi
Baltimore City D	Perryman, MD	3.4 GWh	15.5 mi
Baltimore City F	Perryman, MD	3.4 GWh	15.5 mi
Baltimore City G	Perryman, MD	2.9 GWh	15.5 mi
Essential Power Rock Springs LLC	Rising Sun, MD	228.2 GWh	4.3 mi
Havre de Grace II - E at Perryman	Perryman, MD	2.1 GWh	15.5 mi
Holtwood	Holtwood, PA	985.1 GWh	14.4 mi
IKEA Perryville 460	Perryville, MD	5.5 GWh	9.2 mi
Keystone Solar	Quarryville, PA	7.9 GWh	14.3 mi
Mason Solar One LLC	Elkton, MD	2.2 GWh	13.9 mi
McCormick & Co. Inc. at Belcamp	Belcamp, MD	2.5 GWh	12.3 mi
Peach Bottom	Delta, PA	23.9 TWh	8.6 mi
Perryman	Harford County, MD	244.7 GWh	15 mi
The Clorox Company	Aberdeen, MD	2.8 GWh	12.9 mi
Wildcat Point Generation Facility	Conowingo, MD	4.4 TWh	4.4 mi
York Energy Center	Delta, PA	9.6 TWh	8.9 mi