Crusoe’s planned $3.9B Series F puts modular AI factories in focus

Crusoe announced the initial close of an anticipated $3.9 billion Series F on September 17, 2026, at a $30.9 billion post-money valuation. The AI infrastructure company says the capital will support both large data-center campuses and smaller, factory-built Crusoe Spark units. The funding figure describes the planned round; the company has not said every dollar was received at the initial close.

The round behind the capacity race

Crusoe’s own release names Atreides Management, Mubadala Capital and Valor Equity Partners as co-leads. It also lists investors including Founders Fund, NVIDIA, Qatar Investment Authority and TPG. The company says it has more than $140 billion in total contracted value across its platform and more than 6 gigawatts of gross contracted capacity, including 1 gigawatt it says is already operational.

Those are company-reported measures, not independent estimates of revenue or completed construction. Contracted capacity is especially different from power that has been energized and put to work. In a market where grid connections can delay a data center for years, that distinction is central to the investment case.

Crusoe began by using stranded natural gas for cryptocurrency mining. It has since shifted toward AI cloud services and data-center development. The through line is energy: place compute where power is available, then build the infrastructure needed to use it.

Spark comes off the factory floor

The company is also betting on modular sites that it calls Crusoe Spark. Its September release says these units are manufactured in the United States and can shorten field construction from years to weeks. A separate March announcement described a dedicated factory in Brighton, Colorado, for producing the modules. Crusoe says customers can deploy them individually or group them into larger clusters.

This approach does not make electricity, networking or permits appear automatically. It changes the portion of a project that can be built in advance, shipped and assembled near a usable power source. The claim to watch is deployment time once a real site, not just a factory line, is involved.

A valuation tied to execution

The $30.9 billion valuation shows how much investors are willing to pay for a company that can translate energy access into AI capacity. Crusoe says the funding will scale both the campuses and the modular product. Bloomberg had earlier reported talks for a large round, but the company announcement provides the firmer figure and the important initial-close qualifier.

The next proof point is physical rather than financial: how many Spark units are delivered, how fast they become operational and how much of the contracted capacity turns into functioning compute. For a business selling speed, those dates will matter more than the size of the headline round.