GRDA fulfills its responsibilities by operating three hydroelectric facilities, and managing two lakes, along the Grand River system. These facilities, along with the Grand River Energy Center, combine for a total generation capability of 1,480 megawatts (MW). GRDA transmits and delivers this wholesale electricity across its 24-county service area in Northeast Oklahoma via a sophisticated energy delivery systems. GRDA sells electricity to three customer classes: municipals, electric cooperatives, and industries.