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Sustainability

Built on a culture of innovation, our infrastructure embeds sustainability at every layer. This end-to-end efficiency means clients get better performance at lower cost, while we scale faster and more sustainably, decoupling growth from environmental impact. The benefits extend beyond us: customers gain from cost savings, local communities from heat recovery, and talent and researchers from our reskilling opportunities.

We value transparency and openly report on our performance across the areas that matter most, providing clear insight into our progress and impact.

Download our latest sustainability statement

Key areas of focus

Sustainable AI compute

Efficient computing is critical for sustainable AI development, enabling responsible innovation at scale. Our approach optimizes energy use and resource allocation, keeping costs under control while pushing the boundaries of performance.

Empowerment through technology

We leverage our infrastructure and AI expertise to expand access to cutting-edge tools and education, helping the next wave of innovators develop the skills and solutions they need to solve real-world challenges.

Reliability and security

We are committed to safeguarding both the virtual and physical realms, ensuring a seamless, secure and resilient experience for our users.

Highlighted performance

~20%

less energy use vs. off-the-shelf servers

40°C

max operational t° for Nebius servers

50+ GWh

of server heat reused for city heating in '22-24

Case highlights

Servers and racks: efficiency by design

We design our own servers and racks in-house to optimize for efficiency, reliability, longevity and ease of operation. Compared to similar off-the-shelf models, our servers consume around 20% less energy under the same conditions — adding up to nearly 10 GWh of energy saved in 2024 alone.

Our greenfield data center in Finland

Our Mäntsälä data center was built from the ground up by our highly experienced team with efficiency engineered into every detail, from layout to day-to-day operations. It also pioneered one of the world’s first and region-first heat recovery solutions for district heating. When operating at full capacity, the facility achieves a world-class power usage effectiveness (PUE) of 1.13.

Turning heat into a resource

Where many air-cooling architectures release excess heat into the atmosphere, ours is designed to reuse it. In Mäntsälä, Finland, waste heat generated by servers is captured and fed into the local district heating system. The project was phased in 2015-2016, making us one of the first to implement such technology in the region, and the very first in Finland.

Sustainability disclosures

Sustainability overview for 2023, June 26, 2024 (pdf)