On its exhaust-honest operating ledger a MetroVolt unit exports 486 MW of electricity — round-the-clock, fuel-secure, carbon-free — with the gate-adjudicated hot-ion ceiling (0.61–0.84 GW, labeled history) held as upside on the same machine. That is roughly 400,000 American homes from one compact plant, before the upside.
The plant ledger is computed line by line at the frozen Mode-D point (Table 22, deposited): 1,221 MW fusion; the radiation stream (876 MW) harvested by the photon channel at η_γ = 0.20 — the direct train's largest working line — the honored f_exh = 0.18 charged-exhaust stream through the electrostatic chain; bottoming cycle on the balance; 652 MW gross, 486 MW net after all plant loads, Q_eng 3.9. The hot-ion ceiling ledgers (1.18/1.34 GW gross, 0.61/0.84 GW net) are retained as labeled history.
Both postures obey the same discipline as the physics: no efficiency is booked beyond its cited heritage, and the sustainment power that runs the plasma is charged fully against output.
486 MWe firm is a fleet-planning number: it replaces a retiring mid-size coal or gas unit on a similar grid interconnect, without the fuel logistics and without the emissions. The gated ceiling is the same interconnect earning substantially more — a growth option embedded in every unit sold, priced as such.
| Net electric, operating (exhaust-honest) | 486 MWe (Q_eng 3.9) |
| Ceiling, hot-ion (gated history) | 0.61–0.84 GWe |
| Gross electric, operating | 652 MWe |
| Machine footprint | R₀ = 5.75 m tokamak core |
| Basis | Table-22 ledger, deposited, reproducible |