Markham
A 128.4 MW hydroelectric power plant in Mayes, Oklahoma, owned by Grand River Dam Authority, commissioned in 1964.
Facility nameplate · EIA Plant ID 2980Hydroelectric
Nameplate capacity
128.4 MW
Primary fuel
Hydroelectric
Commissioned
1964
Owner
Grand River Dam Authority
Location
Mayes, Oklahoma
Coordinates
Generation (2024)
188.2 GWh
Status
Operating
Technology
Conventional Hydroelectric
Units
4
Reported annual generation
| Year | GWh | |
|---|---|---|
| 2015 | 347.7 | |
| 2016 | 251.7 | |
| 2017 | 248.6 | |
| 2018 | 176.3 | |
| 2019 | 549.2 | |
| 2020 | 337.9 | |
| 2021 | 287.7 | |
| 2022 | 210.8 | |
| 2023 | 123.5 | |
| 2024 | 188.2 |
Nearby power plants
| Plant | Fuel | Capacity | Distance |
|---|---|---|---|
| Salina | Hydroelectric | 259.2 MW | ~8 km |
| Chouteau | Natural Gas | 1.07 GW | ~9 km |
| GREC | Natural Gas | 1.19 GW | ~11 km |
| Pensacola | Hydroelectric | 130.1 MW | ~29 km |
| Fort Gibson | Hydroelectric | 44.8 MW | ~40 km |
| Northeastern | Natural Gas | 1.48 GW | ~51 km |
See all hydroelectric plants in Oklahoma or browse all plants in Oklahoma.