Tech Beetle briefing DE

Explainer: TheStorage's Industrial-Scale Sand-Based Heat Storage System

Essential brief

Key facts

TheStorage's sand battery technology stores renewable electricity as heat in sand, providing scalable thermal energy storage from 20 to 500 MWh.

The system can reduce industrial energy costs by up to 70% and cut carbon emissions by as much as 90%.

Sand as a storage medium offers durability, low maintenance, and environmental benefits compared to traditional batteries.

This technology helps industries manage renewable energy intermittency and improve grid stability.

The industrial-scale launch marks a key advancement toward sustainable and cost-effective energy solutions in heavy industry.

Highlights

TheStorage's sand battery technology stores renewable electricity as heat in sand, providing scalable thermal energy storage from 20 to 500 MWh.

The system can reduce industrial energy costs by up to 70% and cut carbon emissions by as much as 90%.

Sand as a storage medium offers durability, low maintenance, and environmental benefits compared to traditional batteries.

This technology helps industries manage renewable energy intermittency and improve grid stability.

Finnish cleantech startup TheStorage has introduced its first industrial-scale sand-based heat storage system, marking a significant development in thermal energy storage technology. This innovative system transforms renewable electricity into heat, which is then stored in sand—a cost-effective and abundant material. The stored heat can be released on demand, providing a flexible and efficient way to balance energy supply and demand in industrial settings.

TheStorage's sand battery technology is designed to be highly scalable, with storage capacities ranging from 20 to 500 megawatt-hours (MWh) and charging power between 1 and 20 megawatts (MW). This flexibility allows the system to be tailored to various industrial energy needs, from smaller operations to large-scale facilities. By leveraging sand as the storage medium, the system offers a durable and environmentally friendly alternative to traditional battery technologies, which often rely on scarce or toxic materials.

One of the key advantages of this technology is its potential to significantly reduce industrial energy costs—by up to 70%. This cost reduction is achieved by storing excess renewable energy when it is abundant and inexpensive, then using the stored heat during periods of high demand or when renewable generation is low. Furthermore, the system can contribute to substantial carbon emissions reductions, potentially cutting emissions by as much as 90%. This aligns with global efforts to decarbonize industrial processes and transition toward sustainable energy solutions.

TheStorage's approach addresses some of the common challenges associated with renewable energy integration, such as intermittency and grid stability. By providing a reliable thermal storage solution, industries can increase their use of renewable electricity without compromising operational continuity. The use of sand as a storage medium also implies low maintenance requirements and long system lifespans, enhancing the overall economic viability of the technology.

The launch of this industrial-scale system represents a promising step toward broader adoption of thermal energy storage in heavy industries. As companies seek to meet stringent environmental regulations and reduce operational costs, scalable and efficient storage solutions like TheStorage's sand battery could become a critical component of future energy infrastructure. Continued development and deployment will be essential to fully realize the technology's potential and support the global energy transition.

In summary, TheStorage's sand-based heat storage system offers a scalable, cost-effective, and environmentally friendly solution to industrial energy storage challenges. By converting renewable electricity into storable heat, it enables significant energy cost savings and carbon emissions reductions, supporting the shift toward sustainable industrial operations.