U3O8$86.00/lb0.62%|CCJ$121.082.31%|OKLO$74.444.12%|CEG$198.451.15%|URA$28.901.51%|URNM$52.302.84%|NXE$12.573.42%|U3O8$86.00/lb0.62%|CCJ$121.082.31%|OKLO$74.444.12%|CEG$198.451.15%|URA$28.901.51%|URNM$52.302.84%|NXE$12.573.42%|
SECOND ATOMIC AGE

Thermal Efficiency

Thermal efficiency is the ratio of electrical output to thermal energy input from fission. LWRs achieve 33-37%.

Limited by Carnot cycle and steam conditions at 300°C. Advanced designs like supercritical CO2 cycles target 45%. HTGRs reach 48% via higher temperatures.

Why it matters now

Efficiency drives levelized costs in 2025 SMR markets. Microreactors for data centers emphasize high efficiency.

Related reactors

AP1000Xe-100