Sun‑Ice is a solar‑powered thermal storage system that provides reliable, off‑grid or solar‑primary cooling for new buildings. It stores energy from the sun as cooling power and delivers it 24/7.
Sun‑Ice uses solar energy to freeze a thermal battery during the day.
That stored cooling is then released to keep the building comfortable at night or during cloudy periods.
No electrical batteries are required.
Sun‑Ice is designed so that solar is the primary source of power for cooling.
- Off‑grid containers: 100% solar‑powered with no grid connection.
- Large buildings: Solar provides most of the cooling energy, with the grid acting as a backup during extended low‑sun periods. Surplus solar electricity can be exported back to the grid.
Yes. The thermal battery stores cooling during the day and releases it at night, ensuring continuous operation.
The system is engineered with enough storage capacity to handle cloudy periods.
For large buildings, the grid can supplement the system if needed.
Yes. Sun‑Ice can provide heating by pairing the system with a reversible heat pump.
The heat pump produces hot water, which is circulated through the Sun‑Ice system, allowing it to operate like a highly efficient, low‑temperature radiator.
Yes — substantially.
By using solar as the primary source of cooling, Sun‑Ice dramatically reduces electricity consumption.
In large buildings, exporting excess solar electricity back to the grid further improves operating costs and delivers a fast ROI.
It depends on the building size, insulation quality, and cooling load.
During design, we work with the architect to size the solar array and thermal battery so that solar provides the primary cooling energy year‑round.
Sun‑Ice stores cooling, not electricity.
This makes it:
- More efficient for cooling applications
- Longer‑lasting
- Lower‑maintenance
- Safer (no lithium, no fire risk)
- More cost‑effective for large cooling loads
Sun‑Ice works best in hot, sunny climates where cooling demand is high.
It performs well in tropical, subtropical, and desert regions.
Sun‑Ice is designed for new buildings with strong insulation and high‑performance envelopes.
The better the insulation, the lower the cooling load — and the more efficiently Sun‑Ice operates.
We work closely with architects to optimise:
- Building orientation
- Insulation levels
- Shading and solar control
- Ventilation strategy
- Thermal mass and envelope performance
This integrated design approach ensures the building requires as little cooling as possible.
Yes. Sun‑Ice uses non‑flammable materials, contains no lithium, and is designed for long‑term, low‑risk operation.
The system is also highly recyclable at end‑of‑life.
The Sun‑Ice thermal battery has a 50‑year lifespan.
Other third‑party components follow the manufacturer’s warranty.
Maintenance needs are low.
The system has few moving parts and no chemical battery cells.
Routine checks are similar to standard cooling equipment.
Yes — but only during a major renovation where the building is taken back to its structural frame.
Sun‑Ice is primarily designed for new construction, where it can be fully integrated into the building from the start.
Sun‑Ice is integrated during the building’s design and construction phase.
We work with architects, engineers, and contractors to ensure the system is sized correctly and installed as part of the building’s cooling infrastructure.
Sun‑Ice systems are currently deployed across Asia, with global expansion underway.
