99 Islands

1502 Ninety-Nine Islands, Blacksburg, SC 29702

Plant Summary Information

99 Islands is ranked #11 out of 29 hydroelectric power plants in South Carolina in terms of total annual net electricity generation.

99 Islands is comprised of 4 generators and generated 8.5 GWh during the 3-month period between September 2023 to December 2023.

Plant Name	99 Islands
Utility Name	Duke Energy Carolinas, LLC
Location	Cherokee County, SC
Initial Operation Date	May 1910
Last Update	Dec 2023
Annual Generation	62.1 GWh
Annual Consumption	228.9 k MMBtu
Ranked #3,648 out of 11,835 Power Plants Nationwide
Ranked #456 out of 1,371 Water Power Plants Nationwide
Ranked #52 out of 190 South Carolina Power Plants
Ranked #11 out of 29 South Carolina Water Power Plants
Fuel Types	Water

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Summary Information
Plant Name	99 Islands (3272)
Plant Address	1502 Ninety-Nine Islands, Blacksburg, SC 29702
Utility	Duke Energy Carolinas, LLC (5416)
Latitude, Longitude	35.0314, -81.4936
Generation Dates on File	Jan 2001 to Dec 2023
Initial Operation Date	May 1910
Annual Generation	62.1 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	SERC
Balancing Authority	Duke Energy Carolinas (DUK)
NAICS Code	Utilities (22)
Sector	Electric Utility (1)
Water Source	Broad River
Ash Impoundment	No
Transmission / Distribution Owner	Duke Energy Carolinas, LLC (5416) SC
Grid Voltage	44.00 kV
Energy Storage	No

* Data obtained from the 2023 EIA 860 Report

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	3 MW
Nameplate Power Factor	0.8
Summer Capacity	4.2 MW
Winter Capacity	4.2 MW
Minimum Load	4.2 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	May 1910
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	3 MW
Nameplate Power Factor	1
Summer Capacity	3.4 MW
Winter Capacity	3.4 MW
Minimum Load	3.4 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	May 1910
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	3 MW
Nameplate Power Factor	0.8
Summer Capacity	4.2 MW
Winter Capacity	4.2 MW
Minimum Load	4.2 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	May 1910
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	3 MW
Nameplate Power Factor	1
Summer Capacity	3.4 MW
Winter Capacity	3.4 MW
Minimum Load	3.4 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	May 1910
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M

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
#446	London	Handley, WV	65.1 GWh
#447	Kelly Ridge	Oroville, CA	65.0 GWh
#448	Crescent	Crescent, NY	64.7 GWh
#449	Wise	Auburn, CA	64.6 GWh
#450	Johnson 2	Lexington, NE	64.6 GWh
#451	Woodland Pulp, LLC	Baileyville, ME	366.6 GWh
#452	Fontenelle	Le Barge, WY	63.7 GWh
#453	Deerfield 5	Florida, MA	63.1 GWh
#454	Foster	Foster, OR	62.4 GWh
#455	Mystic	Fishtail, MT	62.3 GWh
#457	Snoqualmie	Snoqualmie, WA	61.9 GWh
#458	Lockhart	Lockhart, SC	61.7 GWh
#459	Flambeau Hydroelectric Station	Ladysmith, WI	61.4 GWh
#460	Terminus Hydroelectric Project	Lemon Cove, CA	61.3 GWh
#461	Blanchard	Royalton, MN	60.7 GWh
#462	Packwood	Packwood, WA	60.4 GWh
#463	Upper Falls	Spokane, WA	59.9 GWh
#464	Browns Falls	Oswegatchie, NY	59.5 GWh
#465	Minidoka	Rupert, ID	59.4 GWh
#466	Little Quinnesec Falls Hydro Project	Niagara, WI	58.9 GWh

Below are closest 20 power plants surrounding 99 Islands.

Plant Name	Plant Location	Annual Generation	Distance
231 Dixon 74 Solar I, LLC	Kings Mountain, NC	3.8 GWh	15.1 mi
232 Long Branch 29 Solar I, LLC	Shelby, NC	2.3 GWh	14.4 mi
Battleground	Kings Mountain, NC	5.4 GWh	16 mi
Beetle Solar	Mooresboro, NC	6.0 GWh	14 mi
Broad River Energy Center	Gaffney, SC	483.7 GWh	5.6 mi
Cherokee County Cogen	Gaffney, SC	276.3 GWh	7.3 mi
Cherokee Falls	Blacksburg, SC	1.5 GWh	3.7 mi
Cleveland Cnty Generating Facility	Kings Mountain, NC	640.9 GWh	10.6 mi
County Home Solar Center, LLC	Shelby, NC	3.3 GWh	16 mi
Dixon Dairy Road Solar	Kings Mountain, NC	5.2 GWh	12.5 mi
Gaston Shoals	Blacksburg, SC	19.3 GWh	9.4 mi
Hutchinson Farm	Shelby, NC	9.3 GWh	15.9 mi
Kings Mountain Energy Center	Kings Mountain, NC	3.3 TWh	13.9 mi
Lafayette Solar I, LLC	Shelby, NC	3.2 GWh	14.4 mi
Lux Solar, LLC	Kings Mountain, NC	3.9 GWh	14.9 mi
Mill Creek (SC)	Blacksburg, SC	38.5 GWh	9.6 mi
Mohea Solar Energy Center, LLC	Gaffney, SC	8.6 GWh	8.4 mi
Roper Farm, LLC	Grover, NC	9.4 GWh	11.2 mi
SID Solar I, LLC	Shelby, NC	8.1 GWh	15.7 mi
York Road Solar I, LLC	Kings Mountain, NC	3.1 GWh	16 mi