Spearfish Hydro

1000 South Canyon Street, Spearfish, SD 57783

Plant Summary Information

Spearfish Hydro is ranked #41 out of 50 power plants in South Dakota in terms of total annual net electricity generation.

Spearfish Hydro is comprised of 2 generators and generated 4.3 GWh during the 3-month period between September 2025 to December 2025.

Plant Name	Spearfish Hydro
Utility Name	City of Spearfish - (SD)
Location	Lawrence County, SD
Initial Operation Date	October 1912
Last Update	Dec 2025
Annual Generation	18.4 GWh
Annual Consumption	67.7 k MMBtu
Ranked #5,460 out of 13,081 Power Plants Nationwide
Ranked #727 out of 1,311 Water Power Plants Nationwide
Ranked #41 out of 50 South Dakota Power Plants
Ranked #4 out of 4 South Dakota Water Power Plants
Fuel Types	Water
Previous Operator	City of Spearfish (2013 to 2024) City of Spearfish - (SD) (2025 to 2025)

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Summary Information
Plant Name	Spearfish Hydro (58438)
Plant Address	1000 South Canyon Street, Spearfish, SD 57783
Utility	City of Spearfish - (SD) (58434)
Latitude, Longitude	44.47833, -103.85472
Generation Dates on File	Jan 2013 to Dec 2025
Initial Operation Date	October 1912
Annual Generation	18.4 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	MRO
Balancing Authority	Western Area Power Administration - Rocky Mountain Region (WACM)
NAICS Code	Utilities (22)
Sector	Electric Utility (1)
Water Source	Spearfish Creek
Ash Impoundment	No
Transmission / Distribution Owner	Black Hills Power Inc (19545) SD
Grid Voltage	69.00 kV
Energy Storage	No

* Data obtained from the 2025 EIA 860 Report

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	2 MW
Nameplate Power Factor	0.95
Summer Capacity	2 MW
Winter Capacity	1.5 MW
Minimum Load	0.3 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	October 1912
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
Other Planned Modifications	No
Multiple Fuels	No

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	2 MW
Nameplate Power Factor	0.95
Summer Capacity	2 MW
Winter Capacity	1.5 MW
Minimum Load	0.3 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	October 1912
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
Other Planned Modifications	No
Multiple Fuels	No

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
#717	Watertown	Watertown, NY	19.2 GWh
#718	High Dam	Oswego, NY	19.1 GWh
#719	Turnbull Hydro	Fairfield, MT	19.0 GWh
#720	Siphon Power Project	Bend, OR	19.0 GWh
#721	South Edwards	Fine, NY	19.0 GWh
#722	Chatuge	Hayesville, NC	18.9 GWh
#723	Wainiha Hydro	Hanalei, HI	18.8 GWh
#724	Lower Saranac Hydroelectric Facility	Plattsburgh, NY	18.7 GWh
#725	Burton Dam	Clayton, GA	18.5 GWh
#726	Herrings	Carthage, NY	18.4 GWh
#728	Hancock Creek Hydroelectric Project	Snoqualmie, WA	18.3 GWh
#729	Ellsworth Hydro Station	Ellsworth, ME	18.3 GWh
#730	Cadyville	Town ofSchuyler Falls, NY	18.2 GWh
#731	West Point PH	Pioneer, CA	18.1 GWh
#732	Mechanicville Hydroelectric Station	Mechanicville, NY	18.0 GWh
#733	PEC Headworks	Moses Lake, WA	17.7 GWh
#734	Winton	Winton, MN	17.6 GWh
#735	Vallecito Hydroelectric	Bayfield, CO	17.4 GWh
#736	Spaulding 1	Emigrant Gap, CA	17.4 GWh
#737	Cove Hydroelectric	Burney, CA	17.4 GWh

Below are closest 20 power plants surrounding Spearfish Hydro.

Plant Name	Plant Location	Annual Generation	Distance
Barber Creek	Gillette, WY	294.0 MWh	108.4 mi
Ben French	Rapid City, SD	17.4 GWh	39.9 mi
Bowman Wind	Bowman, ND	477.2 GWh	115.3 mi
Cedar Hills Wind Farm	Rhame, ND	47.6 GWh	122.2 mi
Cedar Springs I	Douglas, WY	733.0 GWh	129.1 mi
Cedar Springs II	Douglas, WY	736.0 GWh	128.7 mi
Diamond Willow Wind Facility	Baker, MT	88.0 GWh	125.2 mi
Dry Fork Station	Gillette, WY	2.6 TWh	79.5 mi
Fall River Solar, LLC	Edgemont, SD	170.8 GWh	94.9 mi
Hartzog	Wright, WY	148.0 MWh	94.5 mi
Lange Generating Station	Rapid City, SD	144.5 GWh	38.2 mi
Neil Simpson Gas Turbine #2	Gillette, WY	36.5 GWh	76.4 mi
Neil Simpson II	Gillette, WY	641.8 GWh	76.6 mi
Thunder Spirit Wind, LLC	Hettinger, ND	568.3 GWh	126.9 mi
Wild Springs	New Underwood, SD	269.1 GWh	57.6 mi
Willow Creek Wind Power LLC	Newell, SD	381.0 GWh	39.9 mi
Wygen 1	Gillette, WY	578.0 GWh	76.6 mi
Wygen 2	Gillette, WY	595.6 GWh	76.5 mi
Wygen III	Gillette, WY	95.0 GWh	76.4 mi
Wyodak	Gillette, WY	2.0 TWh	76.5 mi