
From Solar Evaporation to a Water-Producing System
HelioVap is translating its solar evaporation technology into modular desalination systems designed for distributed freshwater production.

The current prototype is an engineering validation platform, not a finalised commercial product. Deployment figures, service intervals and delivered water costs are not yet established.
Current engineering priorities
- 01
Long duration stability
Holding performance across extended continuous runs rather than single measurements.
- 02
Salt management
Preventing crystallisation on the active surface during extended operation.
- 03
Condensation efficiency
Closing the gap between what evaporates and what is recovered as liquid water.
- 04
Outdoor validation
Testing under real irradiance, wind and ambient conditions.
- 05
Modular scale-up
Moving from laboratory samples to a repeatable evaporation module.
System architecture
Five parts, one enclosure.
Our product architecture integrates five parts. Each is deliberately simple, because every mechanism added is a mechanism that has to keep working unattended.
- 01
Solar Evaporator
Converts sunlight into localized heat to drive water evaporation.
- 02
Water Supply
Delivers seawater or saline water continuously to the evaporation interface.
- 03
Salt Management
Supports stable operation by managing salt accumulation during desalination.
- 04
Condensation
Provides a cooler surface for water vapor to condense.
- 05
Freshwater Collection
Collects the condensed water for downstream use.
Designed for Distributed Water Production
Off-grid
Designed to operate primarily using sunlight, reducing dependence on external electricity infrastructure.
Modular
System capacity can be adapted to different water-demand requirements.
Low Infrastructure Requirements
Designed for locations where conventional water and energy infrastructure is limited or unavailable.
Scalable
A modular architecture allows deployment from small decentralized units toward larger distributed systems.
What has to be true before this is a product
- 01
A collection efficiency we are willing to publish, measured on hardware rather than modelled.
- 02
Salt behaviour characterised across months of continuous saline exposure, not days.
- 03
Outdoor performance measured across seasons at a real site, with the environmental contribution separated out.
- 04
A cost per litre that holds up against what a site pays today, calculated from measured output rather than from a target.