CoreWeave is powering some of its data center operations with a solar and wind Power Purchase Agreement (PPA) in Spain.

Revealed today (June 12) during the London AI Summit, CoreWeave’s chief business officer, Mike Mattacola, told the audience that the company has signed a “large-scale” PPA in Spain, from which the majority of power comes from solar and wind sources.

“We have PPAs where we need them. In some regions, there’s just so much availability [of renewable energy] or prices are very stable, so we don’t necessarily need them,” Mattacola said.

“In Spain, we have large-scale PPAs, for example, with the majority coming from renewables. We’ve got a new data center we’ll be launching in about 90 days, which will have a 100MW solar farm next to it. We’re doing everything we can to get creative around that. Literally, the opportunity for us to grow is driven by solving that problem.”

Details about the size of the PPA, nor the location of the soon-to-launch data center, were not provided. DCD has reached out for more information.

In Spain, CoreWeave is set to be a customer of the recently launched Merlin Edged data center in Barcelona, which will be the home for its southern Europe region. In its first 15MW phase, CoreWeave will deploy 10,224 Nvidia H200 Tensor Core GPUs with InfiniBand connectivity. Blackwell GPUs are expected next year, for a second phase.

The company has also previously posted an opening on its jobs board hiring for a data center technician in Barcelona, Spain, within an EdgeConneX data center.

CoreWeave has not, to date, publicized information about its PPAs or renewable energy strategy.

During the talk, Mattacola noted that its energy costs in the UK are substantially more than elsewhere – representing around 30 to 40 percent of monthly running costs, versus 15 to 20 percent in the Nordics and the US.

As a result, he emphasizes the importance for the UK to embrace renewable energy projects or deploy SMRs to encourage the development of AI startups in the country.

“We can have all the ambition to build an ecosystem and grow our ecosystem in the UK, but startups … you know, they raise money, and typically around 80 percent of whatever they raise is going on compute. If it’s an AI startup that they’re building, they need the cheapest possible access to AI infrastructure. So by halving [energy costs] through renewables and SMRs, we can keep more AI workloads in the UK.”

The most classic cloud providers – Amazon Web Services (AWS), Google, and Microsoft – are some of the biggest purchasers of PPAs globally. This month has already seen AWS sign a 1.92GW PPA with Talen for power from the Susquehanna nuclear plant, set to last for 17 years. Google signed a 600MW solar PPA last month.