Programmes and agreements / prg-fr-stellaria-equinix-preorder

Stellaria and Equinix pre-order agreement for power from Stellarium reactors (2025)

French molten-salt reactor developer Stellaria signed a pre-order agreement in November 2025 under which data-centre operator Equinix secured the first power-capacity reservation on the Stellarium, which Stellaria plans to deploy from 2035. No site, number of units or reserved capacity is stated. It is a capacity reservation, not a construction order or permit.

Not a deployment project. SMR plans, agreements, studies and government programmes that are not (yet) a single deployment project. They are listed separately and are never counted as projects or reactors.

Type

Customer agreement

Countries concerned

France

Participants and roles

• Developer or vendor: Stellaria
• Host or customer: Equinix

Designs named

Stellarium

Scale as stated

Not stated by the sources

Announced or first reported

Nov 2025

Status

Active
Capacity reservation (pre-order), no site, unit count or reserved capacity stated.

Confidence

low

Last checked

2026-10-14 (record review date, not proof of current activity)

Related deployment projects

• No related deployment project is recorded here.

Sources

• Equinix signs up for power from first Stellaria reactor (reputable_press, published 27 Nov 2025, accessed 2026-10-14)
• Stellaria, CEA to consider experimental MSR at Cadarache (reputable_press, published 27 Apr 2026, accessed 2026-10-14)