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
Location
Mayes, Oklahoma
Coordinates
Generation (2024)
188.2 GWh
Status
Operating
Technology
Conventional Hydroelectric
Units
4
Location
Mayes, Oklahoma · 36.2317, -95.1822
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.