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Question
What does it cost to run a fusion plant?
Operating costs are low and stable: the fuel is cheap and abundant, there's no fuel-price volatility, and a low-neutron design avoids frequent component changeouts.
Cheap, stable fuel plus high availability underpin the economics — see LCOE, capacity factor, and fuel abundance.
Questions & answers
What are the running costs of a fusion plant?
Much of a fusion plant's cost is upfront capital; operating costs are comparatively low and, importantly, stable. The fuel — deuterium from seawater, plus bred helium-3 — is cheap and effectively unlimited, so there's no exposure to volatile fuel markets. Operations, maintenance, and financing make up most of the ongoing cost.
How does the low-neutron design help operating cost?
A great deal. With no breeding blanket to replace and a first wall that lasts the full plant life, Kronos avoids the frequent, downtime-heavy component changeouts that burden D–T plants — supporting a high capacity factor and lower lifetime cost.
How does this show up in the price of power?
In the LCOE ladder, which falls from first-of-a-kind to fleet scale (specific figures shared with commercial partners under NDA and not published publicly). Stable fuel and high availability are part of why the cost is projected to fall and hold.