What is Compact Thermal Energy Storage?
Cartesian delivers compact thermal batteries designed for efficient, sustainable, and cost-effective storage of heat or cold. These innovative systems are tailored for a variety of applications, including commercial buildings, warehouse refrigeration and cooling, as well as district heating and cooling networks. The technology focuses on storing thermal energy when it’s abundant and releasing it precisely when it’s needed, making energy management smarter and more flexible.
Main Benefits of Cartesian’s Thermal Energy Storage
Energy storage isn’t just about saving power; it’s about optimizing how and when energy is used. Here are some key facts and figures that highlight why this technology stands out:
- More than half of the electricity used in buildings goes toward heating and cooling.
- Cooling is currently the fastest-growing electricity demand in the building sector.
- Thermal energy storage reduces peak power demand, easing strain on the grid.
- High energy density means more energy stored in a compact space.
- Flexible modular design allows easy scaling and integration into existing infrastructure.
How Does the Technology Work?
At the heart of Cartesian’s solution is the use of phase change materials (PCMs). These materials absorb or release thermal energy by changing their physical state—think solid to liquid and back again. When heated above their melting point, PCMs soak up heat as they melt. Conversely, when cooled below their freezing point, they release that stored heat as they solidify. This process packs a punch in terms of energy storage because it requires a lot more energy than just heating or cooling a material without a phase change.
Modular and Scalable Design
The Thermal Box is designed to be modular, meaning it can be customized to fit specific needs. Whether a building requires heating or cooling, the system can be scaled up by adding more modules. This flexibility makes it perfect for both retrofits and new constructions. Plus, it can be installed indoors or outdoors, integrating smoothly with existing setups without the hassle of major renovations or big investments.
Real-World Success Stories
Cartesian’s technology isn’t just theoretical—it’s proven in action. For example, KLP Eiendom’s new office in Trondheim has significantly cut energy use and emissions by using the Thermal Box, boosting their sustainability efforts. REMA 1000 in Mjøndalen also reduced energy consumption thanks to this advanced storage solution. Meanwhile, the Zero Emission Building (ZEB) Laboratory in Trondheim uses the Thermal Box to store solar energy, which helps stabilize energy use and cut costs. These projects show how versatile and impactful the technology can be.
Project Impact on Sustainable Development Goals (SDGs)
- SDG 7: Affordable and Clean Energy – by promoting efficient energy storage and reducing reliance on fossil fuels.
- SDG 9: Industry, Innovation, and Infrastructure – through innovative thermal storage solutions that enhance building infrastructure.
- SDG 11: Sustainable Cities and Communities – by improving energy efficiency in urban buildings and districts.
- SDG 13: Climate Action – by lowering emissions and supporting renewable energy integration.
Why Thermal Energy Storage Matters
Did you know that storing thermal energy is one of the most attractive ways to unlock flexibility in buildings? It helps balance grid capacity and saves surplus energy for later use. With the growing demand for cooling and heating, especially in commercial and industrial sectors, solutions like Cartesian’s Thermal Box are game changers. They not only reduce energy costs but also contribute to a more sustainable future by cutting peak demand and emissions. It’s a smart, compact, and scalable approach to energy management that’s ready to meet today’s challenges—and tomorrow’s too.
