Image: ENERGY.GOV · Public domain · Wikimedia Commons
A compact tokamak built with high-temperature superconducting magnets to demonstrate net fusion energy.
What it changes
Aims to prove a tokamak can make more energy than it consumes at a size a utility could site, pulling fusion onto a commercial supply chain.
Availability
Preview (us)
Access and cost
Get Commonwealth Fusion SPARC — No product is sold and pricing is not published; CFS intends to sell power from ARC plants rather than reactors.
Evidence it works
- Lists SPARC as in progress, ARC commercialization as starting, and high-temperature superconducting magnets as done. — source
- Describes SPARC as the device intended to demonstrate net energy gain before the ARC commercial plant. — source
What it cannot do yet
- Under construction: no access, no firm date and no published price for anything CFS will sell.
- Results so far come from components such as the HTS magnets; net energy from the machine itself is not demonstrated.
Commonwealth Fusion Systems · Research · Last verified 2026-09-17. Claims are re-checked on a 30-day clock; the date above is when this line was last confirmed.
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