Nebius Group, an AI infrastructure company, announced that 94% of its electricity consumed comes from low-carbon sources.
The company’s low-carbon electricity is sourced from renewables and nuclear. In 2024, the energy supply at the company’s Finland data center came from a grid mix with an estimated 90% low-carbon sources, primarily from nuclear, wind, and biofuels. Nebius also operates small-scale onsite solar generation (slightly over 100 MWh in 2024), which contributes to the facility’s overall power supply.
The Paris facility covers 100% of its energy supply through a combination of renewable energy power purchase agreements (PPAs) and energy attribute certificates (EACs). Additionally, the co-location in Iceland, which has been in operation since 2025, is powered entirely by hydroelectric and geothermal energy. This approach is coupled with the company’s long-term commitment to renewables procurement.
This results in a market-based emissions intensity of just 0.04 tCO2-eq per 1 MWh of energy used — among the lowest reported in the technology sector. Nebius also recycled nearly 100% of its retired hardware, addressing growing concerns over e-waste as GPU generations evolve rapidly.
The company’s 2024 Sustainability Report demonstrates how Nebius’s strong performance across key sustainability metrics translates directly to business advantages. The company achieved approximately 20% lower total cost of ownership through infrastructure efficiencies, including resilient hardware design and energy efficiency solutions, while its custom-designed servers saved 10 GWh of energy in 2024 alone compared to off-the-shelf alternatives.
“Sustainability is not something we do on the side — it is integral to how we are building our business to be competitive,” said John Boynton, Chairman of Nebius, in a statement. “This is a strategic approach in which every efficiency gain we engineer into our infrastructure translates directly into better performance. When we save 10 GWh of energy through hardware optimization or achieve a PUE of 1.1 at our data centers, we are delivering superior economics that enable long-term value creation while reducing environmental impact.”
Nebius’s flagship data center in Mäntsälä, Finland, showcases the company’s approach to marrying high performance with outstanding efficiency in its infrastructure, including in-house designed hardware optimized for thermal management, water- and refrigerant-free air cooling, and recycling of server heat. The data center’s innovative heat recovery system covers 65% of the local municipality’s heating needs, transforming what other providers consider waste into a valuable community resource.