This decision allows the company to proceed with construction of a coal-based unit that will provide both necessary baseload energy and an economic boost to the state of Kansas.
According to the company, the $2.2bn project will take approximately 52 months to build.
Sunflower is a regional wholesale power supplier and is owned by six distribution cooperatives that serve 400,000 members throughout central and western Kansas.
The company operates a 1,275MW system of wind, gas and coal-based generating plants and a 2,300-mile transmission system for the needs of its six member cooperatives.