Industrial companies are under growing pressure to reduce their CO₂ emissions while remaining economically competitive. This is particularly challenging for energy-intensive sectors, where supply security and process stability are non-negotiable. This is where the ThermalBattery™ comes into play: a modular, low-maintenance high-temperature storage system that captures surplus energy and releases it as needed with high efficiency. As part of modern power-to-heat solutions, it helps companies electrify their production processes. Its technical features make it particularly well suited for industrial applications.
1. Drop-in compatible and ready for immediate use
One of the key advantages of the ThermalBattery™ is how easily it can be integrated. Delivered in a standardized container format, the system is straightforward to transport and quick to install. It’s fully drop-in compatible and can be incorporated into existing infrastructure without major modifications. The plug-and-play architecture streamlines project implementation and enables a fast system start.
Another benefit: the modules are flexibly scalable. Multiple units can be combined to store larger volumes of energy or to supply heat over extended periods. Thanks to their compact design, the containers require relatively little space – a clear plus for sites with limited room to expand.
2. Low maintenance and built to last
Beyond ease of integration, ongoing operating and maintenance costs are critical factors. The ThermalBattery™ is made entirely of solid-state materials, which significantly reduces maintenance requirements. Unlike systems that rely on liquid or gaseous storage media, it contains no moving parts or sensitive pump systems—apart from a few control valves at the connection point to the plant. This minimizes the risk of failure and the need for regular inspection.
The solid medium is also non-corrosive and subject to very little wear. As a result, the system offers a long service life and low maintenance costs over its entire operational lifespan. For operators, this means fewer downtimes, less personnel required for servicing, and a higher overall system efficiency.
3. Safe and sustainable: the HEATCRETE® storage material
The storage medium HEATCRETE® is central to the performance of the ThermalBattery™. This specially developed concrete material is designed to withstand high thermal loads and can store heat reliably for hours or even days.
From a sustainability perspective, HEATCRETE® offers key advantages: it is non-toxic, non-flammable and poses no risk to people or the environment. This makes it well suited for industrial settings with strict safety requirements. In addition, the material is fully recyclable – an increasingly important factor in the context of the circular economy. Even at the end of its service life, the ThermalBattery™ remains a resource-efficient solution.
4. Field-tested and market-ready
Innovative technologies need to prove themselves beyond the drawing board. The ThermalBattery™ has done exactly that. It has been successfully tested in several pilot and industrial projects, where it operated under real-world conditions, including fluctuating load profiles and a variety of industrial processes.
The results confirm its market readiness. Operation is stable, integration with existing systems runs smoothly, and feedback from the field aligns with the projected performance data. For companies looking to switch to power-to-heat, this is a proven solution that’s ready to go.
5. Dynamic in operation: fast charging and discharging times
Another key advantage of the ThermalBattery™ is its fast response time. The system charges and discharges within a short period, which is essential for flexible use in industrial operations. This allows companies to make targeted use of surplus renewable energy, such as from solar or wind power, and access heat precisely when it’s needed.
This responsiveness is particularly valuable in dynamic operating environments, such as discontinuous processes or fluctuating production loads. It enables a precise match between energy supply and demand. The storage unit acts as a buffer that balances short-term fluctuations in the power grid and helps avoid peak loads.
Part of an integrated power-to-heat solution
When combined with an electric heater, the ThermalBattery™ becomes part of an integrated power-to-heat solution for carbon-free heat generation. Electricity from the grid, from on-site renewable sources such as wind turbines or PV systems, or from flexible contracts like PPAs is converted into heat by the electric heater and stored in the battery with minimal losses. Depending on the system setup, the stored energy is then delivered into the process via heat exchangers or steam generators, based on actual demand.
This setup allows companies to optimize the use of renewable electricity without compromising supply security. It also creates new opportunities for managing industrial loads, for example by taking advantage of low electricity prices during off-peak hours or by integrating the system into existing flexibility strategies.
A pathway for the industrial heat transition
Decarbonizing industrial heat remains one of the key challenges of the coming years. Technologies like the ThermalBattery™ demonstrate that viable solutions already exist. What matters now is how consistently industry and policymakers move forward with the shift to renewable process heat. Companies that act early will gain a clear advantage, both economically and strategically.
