Energy

Optimize your energy storage, production and distribution with our climate-neutral thermal energy storage solution.

Thermal energy storage for companies

The Sand Battery offers valuable flexibility for your energy system. By maximizing the use of renewable energy, it helps reduce curtailment, alleviate grid congestion, and lower costs. 

With a simple, robust, and customizable design, the Sand Battery provides high efficiency and a low cost per unit of energy capacity. As the share of intermittent energy sources like wind and solar increases, grid balancing markets can also generate additional income.

Benefits

Sustainable

The Sand Battery saves thousands of tons in GHG emissions annually, with zero toxic or harmful substances released.

30+ years design life

Our solution features a long system design life with uptime exceeding 8,000 hours per year.

Profitable

Charge the Sand Battery by using your own or grid electricity, primarily at low SPOT prices. Participate in frequency containment reserve markets for additional revenue.

Industries & Applications

Energy Utilities

Energy companies face increasing demands to integrate renewable energy into the grid and manage fluctuations in supply and demand.

The Sand Battery enables energy companies to store surplus renewable energy as heat, providing flexibility to balance intermittent energy sources like wind and solar. It reduces curtailment, enhances grid stability, and enables energy companies to supply climate-neutral heat to industrial processes or district heating networks, improving operational efficiency and lowering emissions.

District Heating

District heating systems distribute heat from a central location to residential and commercial buildings, often relying on fossil fuels.

The Sand Battery offers a sustainable, high-efficiency solution for storing and delivering heat to district heating networks. It enables the integration of renewable energy into heating systems, reducing dependency on natural gas, coal, or oil. By storing heat during periods of low demand and releasing it when needed, the battery helps balance supply, reduces emissions, and lowers energy costs.

Space Heating

Space heating in commercial buildings (like hotels, spas, shopping centers or office buildings) or large residential buildings traditionally relies on fossil fuels, resulting in high carbon emissions.

The Sand Battery can store and supply renewable heat for space heating, replacing fossil-fuel-based systems. With the ability to store energy from renewable sources, it provides a cleaner, cost-effective solution for both commercial buildings and large residential buildings, reducing the carbon footprint of heating systems while offering flexibility and reliability.

Renewable Energy Integration (Wind and Solar Farms)

Wind and solar farms produce intermittent energy that often exceeds immediate demand, leading to curtailment. Our Sand Batteries can help stabilize the electricity grid by addressing frequency fluctuations caused by rapid, unpredictable changes in wind power production.

The Sand Battery allows renewable energy farms to store surplus energy as heat, preventing curtailment and ensuring that energy can be used when needed. This enhances the efficiency of renewable energy installations and contributes to grid stability, while also providing a renewable heat source for industrial and district heating applications.

References

“With the Sand Battery, we can significantly reduce energy produced by combustion and completely eliminate the use of oil.”

Mikko Paajanen, CEO
Loviisan Lämpö, Finland

“We are actively developing our energy production portfolio towards a 100% sustainable and emission-free future. Polar Night Energy provides a perfect solution for our needs.”

Pekka Passi, Managing Director
Vatajankoski, Finland

“Your technology works well and is cost competitive in larger heating systems. I am very happy with your work and your staff, a true partnership approach.”

Alexander Richards, Director
Nordluxe, Sweden

Are you ready to switch to clean, affordable energy and fight climate change? Start your journey with us.