From Grid Constraint to AI Growth: Hitachi Vantara and Duraflow Transform Data Center Energy Management for Greater AI and Compute Capacity

• Hitachi Vantara pilots one of the world's largest Phase Change Material installations in its Netherlands data center, demonstrating how organizations can use up to 90% less electricity for thermal management
• Implementation requires zero water for cooling, reducing the resources needed to support data center operations
• This generates more computing capacity from existing power infrastructure, rather than diverting power to cooling

ZALTBOMMEL, The Netherlands and SANTA CLARA, Calif., Oct. 27, 2026 /PRNewswire/ -- As artificial intelligence (AI) accelerates demand for computing power, data centers face a growing challenge: how to increase AI and compute capacity when access to additional electricity is increasingly constrained.

Hitachi Vantara, the data storage, infrastructure and hybrid cloud management subsidiary of Hitachi Ltd. (TSE: 6501), is demonstrating a new approach to address this challenge by showing how data centers can effectively use their power for AI and compute capacity rather than power and cooling. At its data center in the Netherlands, Hitachi Vantara has deployed one of the world's largest operational Phase Change Material (PCM) installations, using technology developed by Dutch thermal energy company Duraflow.

For more information about Hitachi Vantara's approach to AI, please visit: https://www.hitachivantara.com/solutions/ai-analytics

Depending on the application, PCM technology can help reduce electricity consumption related to thermal management by up to 90%, while requiring no water for cooling. By reducing the energy needed to manage power and cooling, a greater share of available electrical capacity can be used for computing – an increasingly important consideration as organizations deploy more energy-intensive AI workloads.

Tackling the energy challenge behind AI
Every watt consumed by AI ultimately becomes heat and managing that heat requires as much as 40% of a data center's total energy needs. At the same time, as AI workloads continue to grow, the ability to convert available electricity into useful computing capacity will increasingly determine how quickly digital infrastructure can expand. This creates a growing challenge for data center operators seeking to increase computing capacity within constrained power infrastructure. In regions where grid congestion or limited access to additional electricity can constrain data center expansion, improving infrastructure efficiency can help organizations make more computing capacity available within their existing power connection.

Hitachi Vantara faced this challenge as demand for high-density computing and AI infrastructure increased. Rather than assuming that more computing required a greater amount of power, the company explored ways to make its existing electrical capacity work harder. The resulting deployment of Duraflow's PCM technology provides a real-world proof point for this approach at an operational scale.

Real-world performance: 240 kW of cooling with low electrical consumption
The installed system provides a total cooling capacity of 240 kW across two 120 kW PCM units. According to operational monitoring data, the two units collectively consume just 5–8 kW of electricity, depending on operating conditions. For comparison, a conventional DX cooling system delivering the same 240 kW cooling capacity would require an estimated 60–80 kW of compressor power. These operational figures illustrate how PCM-based thermal management can significantly reduce the electricity required for cooling, freeing up more of the data center's available power capacity for computing.

"This project started with a very practical challenge: how do we grow our computing capacity when access to additional electricity is limited," said Simon Ninan, Senior Vice President of Business Strategy, Hitachi Vantara. "We realized that if we could dramatically reduce the amount of power required for thermal management, we could make more of our existing electrical capacity available for computing. By partnering with Duraflow, we are demonstrating how smarter energy management can become an important enabler of AI growth."

The approach also supports Hitachi Vantara's broader commitment to operating more efficiently and sustainably, including its goal of becoming carbon neutral in Scope 1 and 2 GHG emissions by FY2030.

Building efficiency across the infrastructure stack
The deployment is part of Hitachi Vantara's broader focus on helping organizations get more value from their infrastructure while managing the growing energy demands of digital workloads.

That approach extends across the infrastructure stack. Hitachi Vantara's Virtual Storage Platform One (VSP One) Block includes a 4:1 Data Reduction Guarantee and features Dynamic Carbon Reduction technology, which reduces energy consumption by switching CPUs into eco-mode during periods of low activity. Its always-on compression capability allows the system to switch from inline data reduction to post processing, which further reduces energy consumption and helps reduce a CO2 footprint by as much as 40%.

"Addressing the energy demands of AI isn't about optimizing one part of the business in isolation," said Courtney Hadden, Sustainability Director, Hitachi Digital. "It's about working in concert across the organization and with innovative ecosystem partners to find efficiencies at every stage – from the products we build, how we bring them to market, and everything in between. The answer cannot simply be to consume more power. We need to become smarter about how we use the power we already have."

Dutch innovation, demonstrated at operational scale
Developed in the Netherlands, Duraflow's PCM technology absorbs thermal energy during periods of peak demand before releasing it in a controlled manner when demand decreases. Unlike conventional cooling approaches that rely continuously on electrically driven refrigeration to remove heat, PCM technology provides a way to manage and store thermal energy more efficiently. The system requires no water for cooling, helping data centers reduce their reliance on water resources while significantly lowering the electricity needed for thermal management.

"Developing technology is one thing; proving that it can operate at this scale in a live, mission-critical environment is another," said Simon Loerakker, CEO, Duraflow. "Our collaboration with Hitachi Vantara has allowed us to demonstrate the potential of innovation at an unprecedented scale. Together, we are showing that sustainable innovation and the growth of AI infrastructure can go hand in hand."

For more information on Hitachi Vantara's AI-enabled infrastructure, please visit: https://www.hitachivantara.com/en-us/products/storage-platforms.

Additional Resources:

• Blog: Raising the Stakes for Sustainable, AI-ready Infrastructure
• Blog: Five Habits That Cut IT Energy Waste, Without Spending More
• Press Release: Hitachi Vantara Releases FY2025 Sustainability Report, Highlighting Leadership in Energy-Efficient Infrastructure for AI-Driven Workloads
• Webinar: Green Data: Sustainable Innovations in Data Centers
• Press Release: Hitachi Vantara Unveils New Virtual Storage Platform One Capabilities to Enable Stronger Cyber Resilience, Performance and Sustainability

About Duraflow
Duraflow develops advanced thermal energy management technology based on Phase Change Materials (PCM). Its independently developed technology enables organizations to significantly reduce energy consumption for thermal management, maximize the use of existing electrical infrastructure and support the sustainable growth of mission-critical digital environments.

About Hitachi Vantara
Hitachi Vantara is transforming the way data fuels innovation. A wholly owned subsidiary of Hitachi Ltd., Hitachi Vantara provides the data foundation the world's leading innovators rely on. Through data storage, infrastructure systems, cloud management, and digital expertise, the company helps customers build the foundation for sustainable business growth. To learn more, visit www.hitachivantara.com.

About Hitachi, Ltd. 
Through its Social Innovation Business (SIB) that brings together IT, OT (Operational Technology) and products, Hitachi aims to be a global leader in continuously transforming social infrastructure through digital, contributing to a harmonized society where the environment, wellbeing, and economic growth are in balance. Hitachi operates worldwide across four sectors – Digital Systems & Services, Energy, Mobility, and Connective Industries – as well as a Strategic SIB Business Unit focused on new growth areas. With Lumada at its core, Hitachi creates value by combining data, technology, and domain knowledge to solve customer and social challenges. Revenues for FY2025 (ended March 31, 2026) totaled 10,586.7 billion yen, with 606 consolidated subsidiaries and approximately 290,000 employees worldwide. Visit us at www.hitachi.com.

HITACHI is a trademark or registered trademark of Hitachi, Ltd. All other trademarks, service marks, and company names are properties of their respective owners.

SOURCE Hitachi Vantara