Total pulverised fuel (PF) related costs provide the means to directly compare alternative coals.
These costs are directly comparable in that the cost calculated for each coal represents equal level
of saleable generation. The components of the fuel related costs calculated for an existing plant are
as follows.
- Annual fuel costs - consist of the FOB mine fuel cost and fuel transportation cost.
- Maintenance costs - associated with maintenance of the steam generator system, air
heaters, fuel preparation and firing system, primary air fans, forced draft fans, induced draft
fans, particulate removal system, fly ash system, bottom ash system, FGD additive
preparation system, FGD system, waste conditioning system, and coal handling system.
- Plant operating costs - consist of scrubber additive costs, fixative costs, and waste disposal
costs.
- Replacement power costs - due to unit derates, unavailability and changes in auxiliary power
requirements.
