ProLogium advances Dunkirk gigafactory infrastructure and localization

Key highlights
  • Power-up of the construction site is planned for early October 2026 as electrical infrastructure and grid connection activities proceed.
  • A consortium of Sogea Caroni, Exyte and Lucas & Gaillard Architectes is leading site access, fencing and platform works.
  • Ardelec Energie is installing electrical infrastructure while ENEDIS executes grid connection; contractors now operate under a single integrated site framework.
  • The facility will deploy a bespoke cleanroom and dry room tailored to battery manufacturing and is targeting BREEAM certification.
Related project For subscribers
Milestones, plant data, involved companies (owners, investors, licensors, contractors) and news — kept up to date.
ProLogium Dunkirk Gen4 Solid-State Battery Gigafactory · France
Under Construction
2023-05
2026-02
2026-02
—
Operational / Completed · expected date for subscribers

On-site execution

Multiple site and infrastructure workstreams are now underway at the Dunkirk gigafactory, including electrical infrastructure installation and grid connection works that support a planned power-up of the construction site in early October 2026. An HSE on-site coordination meeting in early September aligned active contractors under a single, integrated site framework, moving the project from preparatory work into coordinated execution.

Design and sustainability

The gigafactory will use purpose-built construction and design technologies for high-technology battery manufacturing, including a bespoke cleanroom and dry room solution. The facility is targeting BREEAM certification as part of its sustainability commitments.

European supply chain and localization

The Dunkirk site is positioned as a cornerstone of ProLogium’s European battery ecosystem, intended to link R&D, intellectual property, manufacturing, supply chain and talent development on European soil. The project aims to support more diversified critical supply chains and strengthen regional industrial resilience, with regional authorities working to integrate the facility into the Hauts-de-France industrial ecosystem.

Local workforce and engagement

ProLogium is building local capabilities and talent pipelines, participating in the Fabuleuse Factory event from 30 September to 3 October in Dunkirk and running training and partnership programmes with local high schools, universities and training centres to support long-term operations in the region.

Source: ProLogium

chemXplore Weekly

The week’s project milestones and project news from the chemical industry, free every Wednesday.

Free. One email a week. Unsubscribe any time.

Related articles

24 September 2026
Mercedes‑Benz & ProLogium agree joint testing of Gen4 solid‑state battery cells

Priority access to a new Gen4 inorganic solid‑state cell; Mercedes will run electrical, thermal and safety trials to assess suitability for future EV platforms.

10 February 2026
ProLogium breaks ground on Dunkirk gigafactory

Construction begins on a Dunkirk gigafactory for fourth‑generation solid‑state lithium ceramic batteries to boost European battery manufacturing and supply-chain sovereignty.

9 September 2026
ProLogium and Kyushu Electric Power deepen partnership with strategic investment

Existing partner shifts collaboration from industrial projects to capital participation, advancing plans for next‑generation battery module manufacturing in Japan for heavy‑duty electrification.

2 September 2026
ProLogium begins mass production of Gen 3.5 all‑solid‑state LCB — 381 Wh/kg, 903 Wh/L

185.4 Ah cell posts 381 Wh/kg and 903 Wh/L in TÜV test; UL vacuum test classifies it as all‑solid‑state. Gen 3.5 now in mass production at Taiwan gigafactory.

18 June 2026
ProLogium and Elysian sign MoU to evaluate next‑generation batteries for large electric aircraft

Parties will assess pack‑level energy density targets (320–420 Wh/kg) to support large battery‑electric aircraft with 750–1,000 km ranges and explore European supply‑chain localization.