Standard offering plus a cloud management system
Thermal Box Advanced
Everything in the Standard offering, plus a cloud-based management system with options for local integration into the Building Management System. Spot-price and CO₂-aware optimisation, remote M&V and over-the-air updates.
Thermal Box Advanced is the full package — everything in Standard plus a cloud-based management system. Spot-price and CO₂-aware optimisation, remote measurement and verification, and over-the-air updates keep the asset improving for its 25-year lifetime. Local Building Management System integration stays intact for fail-safe operation.
Standard hardware, plus a cloud management layer for continuous optimisation and remote M&V.
Get a sized concept
Cloud management
Centralised dashboard for live status, savings and M&V across a portfolio.
Spot-price aware
Optimisation runs against Nord Pool / ENTSO-E price and CO₂ signals every 15 minutes.
Remote M&V
Verified savings reports for ESG, EPC and performance contracts.
Over-the-air updates
Firmware and optimisation logic keep improving for the asset's lifetime.
Specifications
- Includes
- Standard + cloud management
- Optimisation
- Spot-price & CO₂ aware
- Monitoring
- Cloud dashboard · open API
- Integration
- Local Building Management System + remote
How it works
From the shop floor to your roof — in four steps.
- 01
Install Standard hardware
Same pre-assembled cabinet as Standard — pump, valves, energy meter, Building Management System controller.
- 02
Connect to the cloud
Cellular or ethernet uplink to the Cartesian management platform.
- 03
Optimise against signals
Live spot-price, demand-charge and CO₂ signals drive charge / discharge decisions.
- 04
Verify and improve
M&V reports feed your finance and ESG flows; firmware updates keep the optimisation sharp.
What's included
Everything you need to ship a working install.
Pre-engineered, pressure-tested and certified before delivery — so commissioning takes days, not weeks.
- Everything in Thermal Box Standard
- Cloud-connected gateway (cellular + ethernet)
- Cartesian cloud management platform
- Open REST API for aggregators and Building Management Systems
- Remote firmware update channel
Common questions
Got questions about thermal storage?
From PCM chemistry and lifetime to indoor vs outdoor installs and typical payback — the answers are in the full FAQ.
Read all questionsWhat is thermal energy storage?
The term is used when storing energy as heat or cold, which can be released at a later stage. The heat or cold is usually stored when energy is cheap and then released when the heating or cooling demand is at a peak or the cost of energy is high.
What is PCM?
PCM means Phase Change Material and refers to any material that changes state, for example from solid to liquid, when reaching a certain temperature. This phase change enables large amounts of energy to be absorbed or released. Water is one PCM, storing cold at zero degrees Celsius by changing phase to ice. Cartesian uses a wide variety of other materials, such as bio-based waxes, to store heat or cold at different temperatures.
Is the Thermal Box and the PCM flammable?
For applications with HVAC systems, Cartesian's Thermal Box is not considered flammable. While some PCM might be flammable when they reach temperatures above 100 °C or more, the Thermal Box is designed to eliminate any risks of reaching flammability conditions in operations.
Are PCMs safe?
Cartesian offers only safe PCMs and primarily uses bio-based PCMs in the Thermal Box. The PCM will stay in the Thermal Box for its whole lifetime and is not consumed during operation. The Thermal Box is also designed to avoid any risk of PCM leakage.
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