What is Repowering?

Repowering refers to the modernization or retirement of conventional generating technology resource and it’s upgrade or replacement with a more efficient combined cycle generating resource.  Improves fuel efficiency by 30%.

Repowering Approaches

• Hybrid Repowering -
  Replaces existing dual fueled boiler with one or more gas fueled combustion turbines creating old/new hybrid combined cycle facility
• Backyard Repowering -
  Retire or curtail existing unit(s) – build new state of the art combined cycle gas fired unit at the existing site
• Fleet, System or “Virtual” Repowering -
  Modernize system wide generation resources by adding new efficient generating capacity to displace the utilization of older, less efficient resources (i.e. Caithness)

All repowering options add capacity, improve efficiency and reduce emission rates (lbs/MWhr).

• Total annual emissions at the plant could be higher for CO2 since the facility will run at a higher capacity factor compared to the existing unit

Repowering Sites

• Barret Power Station
• Northport Power Station
• Port Jefferson Power Station