TL;DR · 30-second read

The Short Version

SoftBank, the Japanese investor behind many of the world’s biggest artificial intelligence bets, plans to spend up to 75 billion euros on computer warehouses for artificial intelligence in northern France.

At full size they would use about as much electricity as five large nuclear reactors produce. The first stage is due by 2031.

The surprise: SoftBank and a French electrical company will also build factories at the port of Dunkirk to make the buildings’ metal housings and power equipment. At this scale, producing the equipment fast enough is part of the challenge, not just finding the electricity.

SoftBank plans to develop and operate up to 5 gigawatts (GW) of AI data center capacity in France, with an investment of up to €75 billion ($87.5bn), Data Center Dynamics reported on May 30, 2026. The first phase, costing an initial €45 billion ($52.5bn), aims to deliver 3.1GW in the Hauts-de-France region by 2031, with initial campuses planned at Dunkirk (Loon-Plage), Bosquel and Bouchain.

State-owned utility EDF is partnering on the project and providing the site of a former power plant at Bouchain. Separately, SoftBank will work with Schneider Electric on an industrial production cluster at the Port of Dunkirk: a SoftBank-operated plant making data center enclosures and a Schneider site integrating data center power modules. Financial terms of the Schneider partnership were not disclosed.

Executive Summary

SoftBank’s France plan is one of the largest AI data center commitments announced in Europe, and French economy minister Roland Lescure described it as a first for the group in Europe. The headline figures are ceilings — up to 5GW and up to €75 billion — but the first phase carries firmer markers: 3.1GW, €45 billion, three named sites and a 2031 target date.

The detail that matters most for the industry is not the investment total but the factory cluster at Dunkirk. SoftBank is not only buying data center capacity; it is setting up its own enclosure manufacturing and pairing it with Schneider Electric’s power-module integration next door. That signals the project’s pace is expected to depend on how fast physical equipment can be produced and installed, alongside how fast France’s grid can connect the load.

Two open questions will decide whether the plan lands on schedule: whether gigawatt-scale grid connections in Hauts-de-France can be delivered by 2031, and how SoftBank funds this alongside its other large commitments.

The Dunkirk Factory Is the Tell

A data center at this scale is less a single building than an assembly of standardized parts: enclosures (the prefabricated shells that house equipment), switchgear, transformers, uninterruptible power supplies and the power modules that package them. Delivering 3.1GW across three campuses in roughly five years means installing that equipment at a volume few projects have attempted. SoftBank’s answer is to build the supply chain beside the project: its own plant to manufacture enclosures and a Schneider Electric facility to integrate power modules, both at the Port of Dunkirk, where one of the first campuses (Loon-Plage) is also planned.

Schneider CEO Olivier Blum made the logic explicit, calling prefabricated power modules “a key lever to combine speed, scalability and energy optimization.” Prefabrication moves electrical assembly and testing from a muddy construction site into a factory, where it can be done in parallel with civil works and repeated at volume. Co-locating that production with a campus, at a port, shortens the path from assembly line to installation and could plausibly serve the inland sites at Bosquel and Bouchain as well.

This is why the headline fits: at gigawatt scale, the bottleneck is not only megawatts from the grid but units off a production line. For equipment makers, contractors and other European developers, the implication is that the largest buyers may increasingly lock in dedicated manufacturing capacity rather than compete for it on the open market. SoftBank has not said what share of the project’s equipment the cluster will supply, so the scale of that effect remains to be seen.

France’s Grid Pitch Meets a Gigawatt Test

The French government is selling power as the country’s advantage. Lescure cited “fast access to the most reliable electrical grid in Europe” and a government that works with local authorities to fast-track strategic projects. France’s largely nuclear generation fleet gives it a stable, low-carbon supply base that many European markets lack, and EDF’s direct involvement puts the national utility inside the project rather than across the negotiating table.

Generation and grid connection are different problems, though. A 3.1GW first phase is a very large new load concentrated in one region, and each campus needs high-voltage transmission capacity delivered on time. The choice of Bouchain, a former power plant site provided by EDF, is significant here: retired generation sites often come with existing high-voltage infrastructure and industrial zoning, which can shorten connection work. Neither SoftBank nor EDF has said how much grid capacity is available at any of the three sites or when it will be energized.

The 2031 date is therefore the real test of the minister’s claim. If France can connect gigawatt-scale AI campuses on that timeline, it strengthens its case as Europe’s preferred AI infrastructure location. If connections slip, the factory cluster could end up producing equipment faster than the grid can power it.

The Financing Question Behind the Headline Number

“Up to €75 billion” describes a ceiling, not committed capital. The firmer figure is the €45 billion first phase, which leaves an implied 1.9GW and €30 billion for later phases with no disclosed timing or locations.

The funding context is demanding. According to Data Center Dynamics, SoftBank carries more than $130 billion in debt and took a $40 billion bridge loan in March to fund its latest OpenAI investment. TD Cowen analysts point to further planned outlays, including $16 billion for Stargate and $9 billion for the acquisitions of ABB Robotics and DigitalBridge. SoftBank has also pitched a 10GW data center at a former nuclear enrichment site in Ohio and expects to take a robotics data center construction business, Roze AI, public at a target valuation of $100 billion.

None of this means the France plan cannot be funded; large infrastructure is routinely financed at the project level with outside equity and debt. But SoftBank has not said how this project will be capitalized, and the scale of its concurrent commitments makes the funding structure a fair question for anyone planning around the 2031 date.

What It Means for Europe’s AI Map

France has spent the past year positioning itself as Europe’s AI infrastructure hub, and a commitment of this size from one of the sector’s most active investors strengthens that case. It also gives Hauts-de-France, an industrial region with port access and legacy energy sites, a central role in that strategy.

For competing European locations, the lesson is that power availability alone is no longer the whole pitch. SoftBank’s package pairs a state utility partner, a reused power plant site and a local manufacturing base. Regions trying to win similar projects may be judged on whether they can offer all three.

Background

SoftBank Group, founded by Masayoshi Son, is one of the most active investors in AI infrastructure. It is a major backer of OpenAI and its Stargate data center program, has pitched a 10GW data center at a former nuclear enrichment site in Ohio, and plans to take a robotics data center construction business, Roze AI, public. Schneider Electric is a French multinational supplying power and cooling equipment to data centers, and EDF is France’s state-owned electricity company, which operates the country’s nuclear fleet.

France has spent recent years courting AI data center investment under President Emmanuel Macron, pitching its low-carbon, nuclear-heavy electricity supply and faster permitting for strategic projects. The industrial Hauts-de-France region in the north, home to the Port of Dunkirk and several legacy energy sites, has become a focal point of that effort.

Sources

Source: SoftBank plans up to 5GW data center buildout in France, investment of up to €75bn — Data Center Dynamics on SoftBank’s French AI data center plan and its Dunkirk production cluster with Schneider Electric.