Technology
The Dogwood Energy Facility is a modern, highly efficient electric generator capable of producing up to 675 MW of power using natural gas. Following the upgrade in 2020-2021 to Siemens’ advanced FD6 turbine technology, Dogwood will be one of the most efficient generators in the SPP region.
The facility has two main generating units, each utilizing a Siemens Westinghouse 501F combustion turbine and sharing a common steam turbine.
Dogwood is referred to as a “combined cycle” plant because electricity is first produced in the combustion turbine generators, then the exhaust heat is recovered in steam boilers that feed the steam turbine to produce 50% more electricity.
Air emissions from the facility are controlled using Siemen’s dry low-NOx burner technology and further reduced in a catalytic conversion system located in the exhaust stream. Dogwood emits CO2 at a rate that is about one-half that of a typical coal-fired facility.
Facility Main Components:
Two Siemens Westinghouse 501FD2 gas turbine engines equipped with advanced dry low-NOx combustors. The engines are being upgraded in 2020-2021 to Siemens’ advanced FD6 turbine technology
Evaporative inlet cooling for combustion turbines
Two Toshiba 3-pressure, reheat heat recovery steam generators
Selective catalytic reduction to achieve low air emissions of 4 ppm NOx
A Toshiba steam turbine
Seven-cell evaporative cooling tower
Two Siemens electrical generators and one Toshiba generator with dedicated step-up transformers
Associated mechanical, electrical and control system equipment
Zero liquid discharge system for wastewater handling
