We set out to answer one question: how much US cell capacity can a buyer actually contract right now? Producing, qualified, compliant, not locked to someone else's program. The number is small enough to reframe the terawatt-hour of announcements sitting behind it. SK On posted 821 billion won in quarterly operating profit and we still can't isolate how much comes from recurring battery operations. China has ESS lines running a cell format the market is already moving past. The reported figure and the actionable figure have quietly diverged. This issue measures how far.