FreshWaterMill

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Freshwater and electricity with one windmill

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April 11 2024

Wind-driven water desalination technology can be used for seawater, produced water, or brackish groundwater desalination. Hydraulic wind turbine with high conversion efficiency provides pressure for water desalination, and excess energy can be used for pumping the water, or for electricity generation.

To be implemented in:

Construction camps
Remote areas that require fresh water
Produced water desalination at the well site (fracking, unconventionals)
Community support (social performance)

Pros & Limitations

Redundancy (in case there’s insufficient wind, power is provided by the generator)

Equipment sale or WaaS (water as a service) type performance contracts are possible

RO units are off-the-shelf (TRL 10)

High impact factor

System design does not yet have operational experience (TRL 6)

Pre-treatment requirements depend on project

Specification

Specification Title	Specification Description
Areas of Application	Locations with sufficient wind sources (islands, coastal areas, etc.).
CAPEX	Total CAPEX (including installation) ranges from €250k to €1M, this excludes required local infrastructure.
Control of Process flow	Remote monitoring of patented process control.
Impact	Decentralized renewable fresh water and energy production.
Installation	Relatively straight forward as the majority of the weight is located on ground level.
Maintenance	Low maintenance because the gearbox is removed.
Modular design	The product is available in various sizes and multiple RO units can be connected.
OPEX	OPEX typically around €1 /m3.
Product	Product is a wind-driven decentralized water desalination system, with a containerized footprint. No external power supply needed.
Sizes	Reverse Osmosis units with capacity from 100m3/d up to 800m3/d.