Nebius Group (NBIS) shares rose 10.65% in pre-market trading to $164.00, recovering from a 12.65% decline that brought the previous close to $148.22. The rebound followed the release of the company's 2025 Sustainability Report, which outlined initiatives across energy efficiency, water conservation, and community investment as Nebius works to lower infrastructure costs while scaling its global AI cloud network. The report arrives as the data center industry faces intensifying scrutiny over power and water consumption, driven by surging AI training and inference workloads that are pushing facility densities to unprecedented levels.

Энергоэффективность дата-центров

Nebius reported an average power usage effectiveness (PUE) score of 1.25 across its 2025 data center portfolio, outperforming the cited global industry average of 1.54. A lower PUE indicates that a greater share of electricity reaches computing equipment rather than being consumed by cooling and other facility operations. PUE remains the most widely cited efficiency benchmark in the sector, and hyperscale operators have been racing to drive scores closer to 1.0 as electricity costs and grid constraints pressure margins.

According to the company, its integrated server, rack, cooling, and cloud designs avoided 102 gigawatt-hours (GWh) of electricity consumption during 2025 — an amount Nebius estimated as equivalent to the annual power usage of approximately 9,800 American households. The company said it designs its infrastructure as a unified system to maximize useful computing output per unit of energy consumed.

While Nebius anticipates overall electricity demand will increase as it develops several gigawatts of computing capacity, its engineering strategy targets reduced operating waste across both existing and planned facilities, supporting capacity growth while limiting the additional energy required for each unit of computing.

Системы охлаждения и экономия воды

At an owned facility equipped with closed-loop liquid cooling, Nebius recorded a water usage efficiency of 0.018 liters per kilowatt-hour at the end of 2025. The company cited a projected U.S. data center average of 0.45 to 0.49 liters per kilowatt-hour for comparison. Water consumption has become a growing concern for the industry, particularly in water-stressed regions where local governments and communities are scrutinizing data center withdrawals.

Based on current designs, Nebius estimates that each gigawatt of capacity could avoid 3.3 billion liters of water intake — equivalent to nearly 900 million U.S. gallons or approximately 1,300 Olympic-sized swimming pools. The company plans to deploy similar air and liquid cooling systems at new locations.

Nebius also recovered waste heat from its data center in Mäntsälä, Finland, during the reporting period. The system delivered 19.5 GWh of heat to the local district heating network in 2025 and reduced heating costs for connected households by approximately 10%, according to company estimates. Waste-heat recovery partnerships of this kind have been pioneered by Nordic data center operators and are increasingly studied as a model for facilities in other climate zones.

Возобновляемая энергия и инвестиции в сообщества

During 2025, Nebius sourced all electricity from renewable sources in Iceland, France, and the United Kingdom. The company also transitioned its Finnish operations from 95% low-carbon power to fully renewable electricity. For its U.S. facilities, Nebius continues to evaluate lower-emission power options, including behind-the-meter fuel cells supplied through a partnership with Bloom Energy. Behind-the-meter generation has attracted growing interest among data center operators seeking to reduce reliance on constrained utility grids.

The company said it collaborates with utilities prior to site selection and throughout data center construction to align new computing facilities with available power systems and local infrastructure requirements.

Beyond energy initiatives, Nebius expects its U.S. expansion to generate both construction and permanent technology jobs. The company supports STEM education, apprenticeships, workforce training, and first responders near its operating sites. In 2025, Nebius Academy partnered with 16 universities, including Rowan University, to develop AI and cloud career pathways.