I think the discrepancy is not all the thermal output is converted to electricity: > A1B reactors likely produce enough steam to generate 125 megawatts (168,0

I think the discrepancy is not all the thermal output is converted to electricity: > A1B reactors likely produce enough steam to generate 125 megawatts (168,000 hp) of electricity, plus 350,000 shaft horsepower (260 MW) to power the four propeller shafts.