Mubadala exits CoolIT in $4.75bn deal

Mubadala Investment Company has agreed to sell its minority stake in liquid cooling specialist CoolIT Systems to Ecolab, in a transaction led by private equity firm KKR and valued at $4.75bn, marking a significant reshaping of ownership in a sector gaining momentum alongside artificial intelligence and data centre expansion.

The Abu Dhabi sovereign investor confirmed that it had signed a definitive agreement, signalling the latest move in a broader strategy to recycle capital from maturing technology holdings into new growth areas. The deal underscores intensifying interest in thermal management technologies as computing workloads become more energy-intensive, particularly with the rise of AI training and high-performance computing.

CoolIT Systems, headquartered in Canada, has built its business around direct liquid cooling solutions designed for servers and high-density data centres. These systems are increasingly viewed as essential as traditional air cooling approaches struggle to keep pace with the heat generated by modern processors. Industry executives say the shift towards liquid cooling has accelerated sharply, driven by the expansion of hyperscale data centres and the proliferation of generative AI models.

Ecolab, best known for water, hygiene and energy technologies, is expected to integrate CoolIT’s capabilities into its broader portfolio of industrial and digital infrastructure solutions. The acquisition aligns with Ecolab’s push to deepen its presence in data centre services, where water efficiency and cooling performance have become critical operational concerns.

KKR, which is leading the transaction, has been expanding its footprint in digital infrastructure and climate-linked investments. The firm’s involvement signals continued private equity appetite for assets tied to the energy demands of data processing. Analysts say such deals reflect a convergence of sustainability and technology investment themes, as operators seek solutions that reduce power consumption while maintaining computing performance.

Mubadala’s exit comes after a period of strong growth for CoolIT, which has benefited from rising demand among cloud service providers and semiconductor companies. The sovereign fund has been an active investor in advanced technologies, including semiconductors, clean energy and digital infrastructure, and has increasingly sought to monetise stakes where valuations have strengthened.

The valuation of $4.75bn highlights how quickly the cooling segment has gained strategic importance. Market estimates suggest the global data centre cooling market could expand at a double-digit annual rate over the coming years, fuelled by AI workloads and the expansion of edge computing. Liquid cooling, once considered a niche solution, is now being adopted more widely by major operators seeking to improve efficiency and reduce environmental impact.

Industry observers note that the transaction also reflects competitive positioning among technology suppliers. Companies capable of offering integrated solutions—combining cooling, power management and sustainability metrics—are likely to gain an advantage as clients prioritise operational efficiency and regulatory compliance.

Ecolab’s move into this space is seen as part of a broader diversification strategy, extending beyond its traditional industrial base into digital infrastructure services. The company has been investing in technologies that optimise water usage and energy consumption, areas that intersect directly with the needs of large-scale data centres. By acquiring a stake in CoolIT, Ecolab gains access to proprietary cooling technologies and established relationships with leading hardware manufacturers.

For KKR, the deal adds to a portfolio that increasingly spans infrastructure assets linked to digitalisation and decarbonisation. The firm has been deploying capital into sectors where long-term structural demand is supported by technological change and policy trends. Data centre infrastructure, including cooling systems, fits squarely within that investment thesis.

Mubadala’s decision to divest reflects a pattern among sovereign investors of balancing long-term holdings with periodic exits to capture value. The fund has been active in partnerships with global investment firms and strategic buyers, often co-investing in sectors that align with its mandate to diversify Abu Dhabi’s economy.

Market participants are likely to watch how the new ownership structure influences CoolIT’s expansion plans. The company has been scaling its manufacturing capabilities and investing in research to meet growing demand. Access to additional capital and industrial partnerships could accelerate its development, particularly as competition intensifies among cooling technology providers.