Solar Desalination
Clean Water from Sun & Sand
NES pioneers off-grid desalination systems that use solar heat and sand (SiO₂) as a thermal energy storage battery. The SiO₂ sand bed is not a filter — it is a thermal battery that stores solar energy during the day and powers desalination at night or on cloudy days. Zero chemicals, zero membranes, minimal maintenance.
SiO₂ Thermal Battery Technology
- Sand stores solar energy as heat — powers desalination 24/7
- High specific heat enables efficient heat storage
- Low thermal conductivity ensures slow heat loss
- Vacuum evaporation at lower temperatures reduces energy input
- >70% energy efficiency
- Zero chemicals, zero membranes, minimal maintenance
Product Range
- Solar Desalination Units: 50 to 10,000 litres/day
- SiO₂-based Thermal Battery Systems for energy storage
- Hybrid Solar + Induction Heating Plants
- Designed for dry, remote, and energy-constrained regions
- Scalable and accessible for climate-resilient communities
Applications
Drinking water in arid regionsAgricultural irrigationOff-grid communitiesIndustrial water supplyDisaster relief