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Pensacola DamPensacola Dam was the first hydroelectric facility in the state. GRDA built the dam between December 30, 1938, and March 21, 1940, when depression-era labor was abundant. It is located between the communities of Langley and Disney, spanning over a mile across the Grand River Valley and holding back the 43,500 acres of water that form Grand Lake O' the Cherokees.
In an effort to increase reliability while holding down maintenance costs at Pensacola Dam, the Grand River Dam Authority began a major upgrade project in the fall of 1997.
Though they are Oklahoma’s oldest hydroelectric turbine generators, the six units at Pensacola Dam have performed admirably at the facility for over 50 years. However, increased production capability following the upgrade will ensure that they will play a vital role in the GRDA generation system for the next 50 years and beyond. Following the upgrade, the units should combine to produce an additional 43,000 MWhrs annually.
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