Boilers, Coal, Combined Cycle, Gas

GRDA to sign contract for natural gas turbine to replace coal-fired unit

On Friday, at least three members of the Grand River Dam Authority (GRDA)’s Board of Directors will join Oklahoma Governor Mary Fallin to sign a contract with Mitsubishi Hitachi Power Systems of America to purchase a natural gas combustion and steam turbine, known as the 501J.

The turbine will be included in a 495-MW combined cycle power plant at GRDA’s Grand River Energy Center. Previously the facility served as a coal-fired generating site.

GRDA will pay out nearly $450 million dollars over the next three years to build the new facility which replaces coal-fired Unit 1 and refurbishes Unit 2.

The facility is the only coal generating plant in Oklahoma with a sulfur dioxide scrubber, Tulsa World reported. Unit 2 will be refitted with emission control systems.

On Wednesday, GRDA board members approved JPMorgan to lead the financing and Hawkins Delafield & Woods LLP to act as legal advisers.

Upon completion, GRDA will increase its natural gas generation from 25 percent to 45 percent, while reducing reliance on coal generation from 45 percent to 17 percent.