While on average the top decile consisted of units with larger capacities, higher steam pressures,
higher load factors, and a higher percentage burning bituminous coal, there was significant
overlap with the rest of the fleet. For example, the average steam pressure at the turbine of the top
decile is around 3,000 psig, but there are ten units within the top decile with steam pressures in
the 1,800 psig to 2,000 psig range. Also, the net nameplate capacity of the units in the top decile,
while larger on average, ranged from 114 MW to 1,426 MW, indicating that even small plants can
achieve higher than average efficiencies.
While on average the top decile consisted of units with larger capacities, higher steam pressures,higher load factors, and a higher percentage burning bituminous coal, there was significantoverlap with the rest of the fleet. For example, the average steam pressure at the turbine of the topdecile is around 3,000 psig, but there are ten units within the top decile with steam pressures inthe 1,800 psig to 2,000 psig range. Also, the net nameplate capacity of the units in the top decile,while larger on average, ranged from 114 MW to 1,426 MW, indicating that even small plants canachieve higher than average efficiencies.
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