AECOM provided engineering, procurement, and other services to construct a new “three over one” gas-fired combined cycle plant. The plant uses natural gas to produce 880 megawatts of electricity, enough to power approximately half a million homes. The John Sevier Combined Cycle plant is located within the site boundary of an existing operating facility that contains four 200 megawatt coal-fired units. The new plant has the capability for individual combustion turbine generators to run in simple cycle operation on dual fuel.

AECOM provided engineering and procurement services, field engineering and commissioning support, and materials management. In addition, AECOM executed some of the construction scope under furnish and erect subcontract arrangements. AECOM also provided management of certain procurement purchases and subcontracts which were let by TVA.


  • Award winning project: Power magazine, a Top Plant of 2012
  • 2012 Power Engineering Best Gas-Fired Project of the Year
  • Three Combined Cycle Journal Best Practices Awards, 2013
  • Completed one month ahead of schedule and under budget
  • Safety excellence: 2 million hours without a lost time incident