CoreWeave Opens Copenhagen Site, Extends AI Network

CoreWeave, the US company that rents out AI computing, says it has brought most of a planned 22.5 megawatts of capacity online at atNorth’s DEN01 data centre in Copenhagen, its first site in Denmark. In the same announcement on 27 October, it said it would extend its private network to seven markets in the Middle East and Asia-Pacific, a project it describes as “the first global AI backbone network, purpose-built for AI workloads, at Petabit-scale”.

The Copenhagen site runs NVIDIA Blackwell systems linked by NVIDIA’s Quantum-X800 InfiniBand networking, and DEN01 has an agreement to send surplus heat into the local district heating network. CoreWeave says the site takes its European footprint to nine data centres across five geographies: the UK, Spain, Sweden, Norway and now Denmark.

In brief

CoreWeave says most of a planned 22.5 MW at atNorth’s DEN01 in Copenhagen is online, with NVIDIA Blackwell systems.
Its network will add points of presence in the UAE, India, Indonesia, Singapore, Australia, South Korea and Japan from late 2026, forming a full loop by mid-2027.
CoreWeave calls it the first global AI backbone network; the claim is the company’s own.
CoreWeave reported 51 data centres and more than 1.5 GW of active power as of 30 June.

Copenhagen adds a ninth European site

Copenhagen is a growing AI location: Scaleway has also announced an NVIDIA B300 cluster in the city. atNorth, which is headquartered in Reykjavik, says DEN01 is designed for GPU-heavy work and draws on renewable energy through power purchase agreements. “Modern workloads demand digital infrastructure that is not only high performance, but also energy efficient and responsibly operated,” said atNorth chief executive Eyjólfur Magnús Kristinsson.

CoreWeave did not say how much of the 22.5 MW is live beyond “the majority”, nor give the number of GPUs. Its release says CoreWeave operated 51 data centres worldwide with more than 1.5 gigawatts of active power as of 30 June, and had about 4.2 GW of contracted power at its 11 August earnings call.

The network will reach seven new markets by mid-2027

The bigger part of the announcement is the network. According to CoreWeave’s blog post on the backbone, its existing network links its sites across North America and Europe today. New points of presence in the UAE, India, Indonesia, Singapore, Australia, South Korea and Japan will come online from later in the fourth quarter of 2026, connected over land and subsea fibre, with a full loop expected in mid-2027.

Each point of presence will have multiple 400 gigabit-per-second connections and encrypt traffic in hardware using MACsec, the IEEE 802.1AE standard, so that encryption does not slow transfers, the company says. CoreWeave says every point of presence connects to at least two others over four physically separate paths, and every region links to two points of presence, so no single cable cut should isolate a region. The Indian node will serve the 240 MW CoreWeave plans in Navi Mumbai, and the Indonesian one will link three facilities announced in August.

“We’re expanding our global infrastructure and the network connecting it together, so customers can focus on building and improving AI rather than managing the complexity underneath it,” said Sachin Jain, CoreWeave’s chief operating officer.

Moving data between regions is the new bottleneck

The network matters more than the 22.5 MW. CoreWeave’s pitch is that AI training and inference create long, heavy data flows, copying datasets, checkpoints and finished models between regions for hours or days, which general-purpose cloud networks were not built for. If a customer can only get GPUs in Copenhagen but keeps its data in Texas, the speed of the link between them decides how useful those GPUs are. A private backbone lets CoreWeave sell spare capacity anywhere on its map, not just where a customer’s data already sits.

The “first global AI backbone” label is CoreWeave’s own, and hard to test, because CoreWeave has not published total capacity beyond “Petabit-scale”, which it illustrates as enough to stream a 4K film to 66 million people at once. The firm figures are the per-site links and the path diversity. That design choice reflects real risk: subsea cables in the region do fail, as the Perth-to-Singapore repair saga showed, and four separate paths per node is CoreWeave’s answer.

There is also a small discrepancy in CoreWeave’s own figures. The release dates its 51 data centres to 30 June, while the blog says the network connects 51 “today”, including eight added in 2026, which leaves it unclear whether Copenhagen is in that count. Nordic projects can also slip, as Nscale’s Glomfjord site reportedly has. The next markers are the first Asian and Middle Eastern points of presence, due to start coming online before the end of this year.