Costs
Cost estimates by B&W for commercial
implementation of coal reburning technology
are based on two sizes of cyclone boilers,
with 50% NOx reduction for each size.
For a 110-MWe (gross) power plant, the
same size as Nelson Dewey Unit 2, total
capital is $66/kW. This figure decreases to
$43/kW at a capacity of 605 MWe. Tenyear
levelized costs (current dollars) are 2.4
mills/kWh at 110 MWe and 1.6 mills/kWh
at 605 MWe. The corresponding costs are
$1,075/ton of NOx removed at 110 MWe
and $408/ton at 605 MWe. Site-specific
factors, such as the type of boiler, will affect
the economics.