Rethinking Electromembrane Stacks

REDstack produces the world’s best ElectroMembrane Stacks, with the highest energy and chemistry efficiency. Our Stacks are 100% liquid-tight and fully closed modules, without carry-over of liquids between compartments.

REDstack ElectroMembrane Stacks are the key-component for unlocking solutions for direct air capture, sustainable water-reuse and resource recovery:

Salt removal

Delivering reliable, energy-efficient and scalable solutions for the removal of salt from water.

Resource recovery

Enabling efficient extraction of nitrogen, lithium, and emerging applications.

Carbon capture

Enabling direct air capture and direct ocean capture solutions for large scale carbon capture.

Our ElectroMembrane Stacks empower sustainable technologies

At REDstack, we drive carbon capture, sustainable water use, and resource recovery with world-leading ElectroMembrane Stacks.

Born from Dutch innovation and partnering globally, our advanced, cost-efficient ElectroMembrane Stacks are built to lead and last.

A critical link in the path to net zero

The challenges of water scarcity, resource recovery, and emission reduction require more than isolated solutions. Our technology acts as an essential part of a broader ecosystem, enhancing the effectiveness of existing processes and unlocking new possibilities for businesses seeking to build sustainable, market-ready solutions.

We collaborate with partners worldwide to integrate our technology into processes that contribute to a circular economy. Whether it’s removing salt through electrodialysis, capturing CO₂ from alkaline solutions, or recovering valuable resources such as nitrogen and phosphorus, REDstack provides the foundation for industries to take the next step.

More about our heritage

Unmatched efficiency

REDstack’s ElectroMembrane stacks achieve up to twice the energy savings compared to other suppliers, ensuring lower operational costs (OPEX) while maximizing performance and resource utilization.

Superior sustainability

Our liquid-tight, fully closed modules prevent inter-compartment fluid migration, setting new standards for environmental performance and supporting greener, more sustainable solutions for future generations.

Seamless integration

Designed to integrate effortlessly into existing infrastructures, REDstack technology enhances the efficiency of climate and water initiatives, making it a key enabler in achieving circular and carbon-neutral goals.

Trusted by leading companies

Companies around the world rely on REDstack to drive their sustainability goals. Our patented technology, with the highest energy and chemistry efficiency, offers unmatched performance and flexibility.

What we have done for our clients

REDstack has delivered us advanced and very efficient ElectroMembrane stacks, enabling us to provide sustainable and resilient solutions for water use, energy, and resource recovery to our customers.

Wilbert Menkveld

CTO SAUR/Nijhuis Industries

REDstack, born out of Wetsus, has been a key partner in advancing innovation in electrochemical systems. Together, we have pioneered groundbreaking solutions for desalination, energy production, carbon capture, and energy storage. Their revolutionary electro membrane technology exemplifies the sustainable innovations Wetsus strives to foster, contributing to a cleaner and more sustainable future.

Cees Buisman and Jan Post

Scientific and program director Wetsus

At SeaO2, we’re proud to partner with REDstack, a pioneering company specializing in advanced electrochemical technology. Together, we’re working closely to optimize and enhance stack efficiency, critical to the performance and scalability of SeaO2’s Direct Ocean Carbon Capture (DOC) technology.

Ruben Brands

Founder & CEO SeaO₂

REDstack delivers outstanding ElectroMembrane stacks for salt removal, and also for energy production from Brines. We have a valued long term relationship with REDstack and are impressed with the quality and efficiency of their products.

Domingo Zarzo Martínez

Head of Strategic Projects and Institutional Relations SACYR WATER