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Technical Library › Glossary of Fusion & Plasma Terms
Glossary
Aegis / MetroVolt burner · design render
Aegis / MetroVolt burner · design render · © 2026 KFE

Fuelling Efficiency

Tritium inventory breakdown across the system — TMAP8.
Tritium inventory breakdown across the system — TMAP8. canon 2026-08-27 · © 2026 KFE

How much injected fuel actually reaches and stays in the plasma.

Glossary of Fusion & Plasma TermsUpdated 2026-08-11

Fuelling efficiency measures the fraction of injected fuel that ends up sustaining the plasma rather than being pumped away. Pellet fuelling is more efficient than gas because it penetrates deeper.

Related

Pellet Fuelling →Density Control →Gas Puffing →
← PreviousFuel ThroughputNext →Full-Power Year