What was computed
RESOLVED as design answer: 4-nines requires grid-tied Tier III/IV topology; islanded ceiling 99.9% w/ N+2+BESS stated plainly; restart modeling = name
Reproduce this
# Reproduce MV-L1-A4 against the frozen record pip install kronos-toolkit # github.com/KronosFE/kronos-toolkit python -c "from kronos_toolkit.verify import run_regression; run_regression()" # MV-L1-A4 is anchored in the 2026-08-27 freeze spine (verdict: revised).