The Grand River Dam Authority provides reliable, competitively-priced electricity to the many industries of the MidAmerica Industrial Park (MAIP). GRDA has been providing electricity to MAIP industries since the park’s creation in 1960 and actually provided power to the Oklahoma Ordnance Works facility, on the same site, 25 years before MAIP’s creation.

GRDA’s Grand River Energy Center (GREC), including 987 MW of electric generation capacity (combined among gas and thermal generation) is located on the southern edge of MAIP. Also located adjacent to MAIP, the GRDA Transmission Headquarters is home to power line maintenance crews, dedicated to MAIP. The close proximity translates into quick response times and enhanced reliability.

Electricity is delivered to MAIP industries via GRDA’s robust MAIP infrastructure:

  • 161 kV transmission loop (18 miles)
  • 69 kV transmission loop (13 miles)
  • 13.8 kV distribution feeders (44 miles)
  • 6 transmission substations
  • 8 distribution substations

Depending on specific customer needs, new delivery points can be served from existing distribution substations/feeders or new facilities constructed on customer sites. The construction of additional electric transmission facilities within MAIP could also accommodate exceptionally large loads.

The existing 161/69 kV transmission system can support over 900 MVA of industrial load in MAIP. Available service includes:

  • Primary voltages: 161 kV and 69 kV
  • Common secondary voltages: 277/480 V or 120/208 V, 3-phase
  • Single-phase secondary and additional voltage levels of 3-phase service, with approval, are also available.
For more information:

Cameron Philpott, Manager of Business Development, Direct: 918-610-9752 , Mobile: 918-931-1911

GRDA’s MAIP System Reliability:
99.99% (1/2017 – 12/2020)

Key GRDA customers in MAIP:
• American Castings, LLC
• Google
• Cascades
• Pryor Chemical Company
• Solae, LLC

GRDA generation assets:
Pensacola Dam – 126 MW
Robert S. Kerr Dam – 128 MW

Pumped Storage – 260 MW

Coal – 492 MW

Combined Cycle Gas
GREC Unit 3 – 495 MW
Redbud – Winter 457 MW
Redbud – Summer 435 MW

Wind – 385 MW

Visit our Generation page for more information.

GRDA is Oklahoma’s largest public power utility; fully funded by revenues from electric and water sales instead of taxes.  

Created in 1935, GRDA has been producing abundant, reliable and competitively-priced electricity for Oklahoma municipals, industries and electric cooperatives since 1940. Today, a workforce of 500-plus Oklahomans strive to make GRDA an “Oklahoma agency of excellence” by focusing on the 5 E’s: Electricity, Economic Development, Environmental Stewardship, Employees and Efficiency.

GRDA’s diverse generation portfolio helps keep rates low and reliability high.