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Exergy3

Exergy3 converts surplus renewable electricity into high-temperature thermal energy, providing a cost-effective and practical decarbonization solution for industrial processes. Our technology stores up to 8 MWh of renewable energy with minimal losses, eliminating fossil fuel use and accelerating the transition to clean energy.
2023
11-50

https://www.exergy3.com

Carbon CaptureClean EnergyEnergy StorageRenewable EnergySustainability
Innovation
Investment Funding
People
Products
Awards and Recognitions
M&A and Collabs
News

Innovation

Industry Problem

Exergy3 is tackling a critical problem: the heavy reliance on fossil fuels in industrial and thermal processes, which contributes significantly to global carbon emissions.

R&D Focus

Exergy3’s R&D focuses on high-temperature thermal energy storage and conversion technology that uses curtailed renewable electricity to produce and store heat up to 1200°C. Their niche lies in developing modular, efficient, and flexible thermal storage systems for decarbonising industrial heat processes, district heating, and grid energy balancing.

Innovative Solution

Exergy3’s solution converts surplus renewable electricity, especially during low-demand periods, into high-temperature thermal energy, which is stored and later supplied as heat for industrial and thermal processes. This system delivers clean heat up to 1200°C, eliminating the need for fossil fuels in high-temperature applications. It also enhances energy grid flexibility by using otherwise wasted renewable power, stabilises energy costs, and supports compliance with decarbonisation targets through a modular, efficient, and easy-to-install thermal storage technology.

Solution Effectiveness

Exergy3’s technology stores up to 8 MWh of renewable energy as high-temperature heat (up to 1200°C) with minimal losses, targeting the over 50% of global CO₂ emissions from industrial heat. By using otherwise wasted renewable power, it improves grid flexibility and reduces reliance on fossil fuels, which still make up 82% of the UK’s energy supply. Their solution is more cost-effective and closer to market readiness than alternatives such as hydrogen or electric boilers, making it a highly efficient and practical decarbonisation tool.

Investment Funding

Last Funding Stage

Seed

Total Funding Amount

$11.0M

Last Funding Amount

$1.3M

Last Funding Date

September, 2024

Startup Stage

Pre-Seed

Lead Investors

Department for Science, Innovation and Technology (DSIT), Zero Carbon Capital, UK Government, Scottish Enterprise, Old College Capital

People

Founders

  • Markus Rondé
  • Adam Robinson

CEO

  • Markus Rondé

Products

Product

– High-Temperature Thermal Energy Storage Modules – Store renewable electricity as heat up to 1200°C for industrial and thermal processes. – Modular Thermal Storage Systems – Easily scalable and combinable units to meet varying heat storage needs in industries and district heating. – Simultaneous Charge & Discharge Technology – Enables continuous 24-hour heat supply for uninterrupted industrial processes. – Variable Output Control System – Provides adjustable temperature and flow rates to suit specific process requirements. – Containerized Thermal Storage Units – Facilitates easy transportation and installation with minimal civil works. – Customer Review- “Exergy3’s approach is powerful in its ability to address all of these needs: flexibility, revenue supporting industrial competitiveness, reduced exposure to energy prices, and ‘grid-friendly’ electrification of industrial heat.” – Dr Alastair Martin – Chief Strategy Officer, Flexitricity

Star Product

High-Temperature Thermal Energy Storage System is the star because it directly addresses the biggest challenge in decarbonising industrial heat, providing clean, reliable, and high-temperature thermal energy (up to 1200°C) using renewable electricity. Its modular design, high capacity (up to 8 MWh per module), efficiency, and ability to store otherwise wasted renewable energy make it a practical and scalable solution. It enables industries to reduce fossil fuel use, lower carbon emissions, and support grid flexibility, putting it ahead of alternatives such as hydrogen or electric boilers.

Demo Product or Complete Product?

Exergy3’s first launched product is a full-scale ultra-high-temperature thermal energy storage system installed at Annandale Distillery in Scotland. This modular system stores green electricity as heat at temperatures up to 1200°C in a compact container, providing clean, renewable heat to replace fossil fuels in industrial processes. Funded by a £3.6 million UK government grant, this pioneering project marks Exergy3’s initial commercial deployment and a major step towards decarbonising high-temperature industrial heat.

Awards and Recognitions

Awards

– Innovation Zero Exhibition 2025 – £3.6 Million Funding Award

Media Apperance

– Scottish Financial News – Eureka Magazine – Mercom Capital – Zero Carbon Capital

M&A and Collabs

Collab

Exergy3 is collaborating with Annandale Distillery in Dumfries and Galloway to install a demonstration of its thermal energy storage system. This initiative aims to produce carbon-neutral whisky by replacing fossil fuels with stored renewable heat, marking a significant step in decarbonizing the distillation process.

Collab

In collaboration with boiler manufacturer Cochran, Exergy3 is integrating its thermal storage system with Cochran’s steam boilers. This partnership facilitates the delivery of ultra-high temperature heat for industrial applications, demonstrating the practical integration of Exergy3’s technology with existing industrial infrastructure