Markham

4221 E 545 RD, Locust Grove, OK 74352

Plant Summary Information

Markham is ranked #5 out of 9 hydroelectric power plants in Oklahoma in terms of total annual net electricity generation.

Markham is comprised of 4 generators and generated 26.9 GWh during the 3-month period between September 2024 to December 2024.

Plant NameMarkham
Utility NameGrand River Dam Authority
LocationMayes County, OK
Initial Operation DateMay 1964
Last Update Dec 2024
Annual Generation 188.2 GWh
Annual Consumption 677.7 k MMBtu
Ranked #2,463 out of 12,299 Power Plants Nationwide
Ranked #221 out of 1,323 Water Power Plants Nationwide
Ranked #88 out of 132 Oklahoma Power Plants
Ranked #5 out of 9 Oklahoma Water Power Plants
Fuel Types Water

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Monthly Net Generation for Markham

Markham Details

Summary Information
Plant NameMarkham (2980)
Plant Address4221 E 545 RD, Locust Grove, OK 74352
UtilityGrand River Dam Authority (7490)
Latitude, Longitude36.2317, -95.1822
Generation Dates on FileJan 2001 to Dec 2024
Initial Operation DateMay 1964
Annual Generation 188.2 GWh
Fuel Types Water
 
Federal Energy Regulatory Commission (FERC) Information
FERC Cogeneration StatusNo
FERC Small Power Producer StatusNo
FERC Exempt Wholesale Generator StatusNo
Regulatory Information
Regulatory StatusRegulated
NERC RegionMRO
Balancing AuthoritySouthwest Power Pool (SWPP)
NAICS CodeUtilities (22)
Sector Electric Utility (1)
Water SourceGrand Neosho
Ash Impoundment No
Transmission / Distribution OwnerGrand River Dam Authority (7490) OK
Grid Voltage 161.00 kV / 115.00 kV
Energy StorageNo

Generator 1 Details Operating May 1964

TechnologyConventional Hydroelectric
Prime MoverHydroelectric Turbine
OwnershipSingle Owner
RTO ISO LMP Node DesignationGRDAKERR_HYDUN1
RTO ISO Location Designation For Reporting Wholesale Sales DataGRDAKERR_HYDUN1_RA
Nameplate Capacity32.1 MW
Nameplate Power Factor0.93
Summer Capacity31.4 MW
Winter Capacity31.4 MW
Minimum Load18 MW
Uprate/Derate Completed No
StatusOperating
First Operation DateMay 1964
Combined Heat & Power No
Sector NameElectric Utility (1)
Energy SourceWater
Solid Fuel Gasification No
Carbon Capture TechnologyNo
Time From Cold Shutdown To Full Load10M
Other Planned ModificationsNo
Multiple FuelsNo

Generator 2 Details Operating May 1964

TechnologyConventional Hydroelectric
Prime MoverHydroelectric Turbine
OwnershipSingle Owner
RTO ISO LMP Node DesignationGRDAKERR_HYDUN2
RTO ISO Location Designation For Reporting Wholesale Sales DataGRDAKERR_HYDUN2_RA
Nameplate Capacity32.1 MW
Nameplate Power Factor0.93
Summer Capacity31.6 MW
Winter Capacity31.6 MW
Minimum Load18 MW
Uprate/Derate Completed No
StatusOperating
First Operation DateMay 1964
Combined Heat & Power No
Sector NameElectric Utility (1)
Energy SourceWater
Solid Fuel Gasification No
Carbon Capture TechnologyNo
Time From Cold Shutdown To Full Load10M
Other Planned ModificationsNo
Multiple FuelsNo

Generator 3 Details Operating May 1964

TechnologyConventional Hydroelectric
Prime MoverHydroelectric Turbine
OwnershipSingle Owner
RTO ISO LMP Node DesignationGRDAKERR_HYDUN3
RTO ISO Location Designation For Reporting Wholesale Sales DataGRDAKERR_HYDUN3_RA
Nameplate Capacity32.1 MW
Nameplate Power Factor0.93
Summer Capacity31.5 MW
Winter Capacity31.5 MW
Minimum Load18 MW
Uprate/Derate Completed No
StatusOperating
First Operation DateMay 1964
Combined Heat & Power No
Sector NameElectric Utility (1)
Energy SourceWater
Solid Fuel Gasification No
Carbon Capture TechnologyNo
Time From Cold Shutdown To Full Load10M
Other Planned ModificationsNo
Multiple FuelsNo

Generator 4 Details Operating May 1964

TechnologyConventional Hydroelectric
Prime MoverHydroelectric Turbine
OwnershipSingle Owner
RTO ISO LMP Node DesignationGRDAKERR_HYDUN4
RTO ISO Location Designation For Reporting Wholesale Sales DataGRDAKERR_HYDUN4_RA
Nameplate Capacity32.1 MW
Nameplate Power Factor0.93
Summer Capacity31.2 MW
Winter Capacity31.2 MW
Minimum Load18 MW
Uprate/Derate Completed No
StatusOperating
First Operation DateMay 1964
Combined Heat & Power No
Sector NameElectric Utility (1)
Energy SourceWater
Solid Fuel Gasification No
Carbon Capture TechnologyNo
Time From Cold Shutdown To Full Load10M
Other Planned ModificationsNo
Multiple FuelsNo

Markham Plant Owners

Owner NameAddressGeneratorOwnership
We couldn't locate any owners for this plant

Power Plants with Similar Net Generation

Power plants with a similar annual net generation from Water.

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#211Edison SaultSault Ste. Marie, MI199.0 GWh
#212Sam Rayburn DamJasper, TX198.5 GWh
#213Cowlitz FallsRandle, WA196.3 GWh
#214ColtonPierrepont, NY195.0 GWh
#215WoodleafForbestown, CA193.8 GWh
#216Prospect 2Prospect, OR193.1 GWh
#217Kern River 1Bakersfield, CA192.1 GWh
#218DenisonDenison, TX191.9 GWh
#219DegrayArkadelphia, AR189.7 GWh
#220Pit 1Burney, CA188.4 GWh
#222NorforkSalesville, AR187.6 GWh
#223North ForkEstacada, OR186.7 GWh
#224John C BoyleKeno, OR186.6 GWh
#225Little Falls (WA)Ford, WA185.3 GWh
#226Boone DamKingsport, TN184.5 GWh
#227TilleryMount Gilead, NC184.2 GWh
#228Toketee FallsIdleyld Park, OR184.1 GWh
#229Weiss DamLeesburg, AL184.0 GWh
#230AlderLa Grande, WA182.9 GWh
#231NantahalaTopton, NC182.7 GWh

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