ARC
ARC is a tokamak fusion project run by Commonwealth Fusion Systems in United States. It is planned. Like every fusion device built so far, it has produced no net electricity.
No hardware. Site selected in Chesterfield County, Virginia; the design follows SPARC.
Intended as the first fusion plant to sell electricity, at 400 MWe. Everything about it depends on SPARC working first.
| Organisation | Commonwealth Fusion Systems |
|---|---|
| Approach | tokamak |
| Confinement | magnetic |
| Country | United States |
| Status | Planned |
| First plasma | not yet |
| Target date | early 2030s |
|---|---|
| Power target | 400MW |
| Energy gain target | none stated |
| Net electricity | No. no fusion device has produced any |
Other tokamak projects
Fusion needs tritium, and the world's civilian stock comes mostly from CANDU fission reactors. See the fusion overview.
ARC in context
14 of the 24 fusion projects on record use the tokamak approach: 7 operating, 3 under construction, 3 planned and 1 closed.
Its stated fusion power target is 400 MW, 2nd of the 6 projects that state one (median 300 MW).
| Measure | ARC | Median of all projects | Standing |
|---|---|---|---|
| Fusion power target (MW) | 400 | 300 | 2 of 6 |
Worked out from the entries on this site only, so a figure compares ARC with what is recorded here, not with everything that exists. An entry with no value for a measure is left out of that measure's ranking and median.
Sources
- World Nuclear Association, Nuclear Fusion Power · retrieved 2026-09-07
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data