What was computed
0 direct CO2 (f_n 0.797 breeder / 5.44% burner [T]); lifecycle ~10-30 gCO2e/kWh class, ~40 t steel/~90 m3 concrete per MW [R]
Reproduce this
# Reproduce ENV-A1 against the frozen record pip install kronos-toolkit # github.com/KronosFE/kronos-toolkit python -c "from kronos_toolkit.verify import run_regression; run_regression()" # ENV-A1 is anchored in the 2026-08-27 freeze spine (verdict: reproduced).