Organisations are under increasing pressure to reduce carbon emissions, manage energy use more intelligently, and meet long-term sustainability targets. Cooling systems—essential, yet energy-intensive—are a key focus. EnergiVault, the new cold thermal energy storage system from O-Hx, has been developed to help businesses tackle these challenges head-on.
Cooling is one of the largest single contributors to site-level electricity use, particularly in commercial buildings, production environments, and data centres. During peak daytime periods, this demand is typically met by carbon-intensive grid electricity—pushing up both emissions and costs.
EnergiVault offers a smarter approach.
By storing cold energy overnight—when grid carbon intensity is lower—EnergiVault allows cooling demand to be shifted away from the most carbon-heavy parts of the day. This shift has the potential to significantly reduce CO₂ emissions, particularly in sectors with large, continuous cooling loads.
“The carbon content of electricity can be up to 50% lower at night than during the day,” explains the engineering team at O-Hx. “EnergiVault is designed to take advantage of that gap—lowering carbon emissions without requiring a change in the chiller plant itself.”
The environmental potential of EnergiVault goes further:
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It reduces the need for short cycling of chillers, improving efficiency and supporting longer equipment life.
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It can be integrated with on-site renewables, such as solar PV, allowing operators to store excess generation for use during the day.
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It can help organisations avoid running diesel or gas generators during grid constraint periods by reducing electrical load at peak times.
In future scenarios, EnergiVault could also support participation in demand flexibility markets—helping absorb surplus renewable energy from the grid and providing support to national infrastructure during stress events.
What makes the technology particularly valuable is its potential to deliver measurable, reportable reductions in energy consumption and emissions—aligning with ESG frameworks, corporate sustainability goals, and long-term Net Zero strategies.
EnergiVault is fully modular and can be tailored to suit a wide range of site types, from commercial offices and production sites to cold stores and critical infrastructure. As a complement to energy efficiency upgrades and renewable energy investments, it offers a practical pathway to better energy and carbon management.
While new to market, EnergiVault has been engineered to meet the real-world needs of modern organisations looking to operate more sustainably. It’s not just about cooling more efficiently—it’s about doing so in a way that genuinely supports environmental progress.
