Introducing Flexolyser™

Flexolyser electrolyser stack
Engineers working at the Flexolyser pilot installationEngineers monitoring the Flexolyser pilot installation

Flexolyser™ is the first fully flexible pressurised alkaline electrolyser for industrial applications.

It is designed for safe intermittent operations enabling new business models and lowering overall system cost.

Flexolyser stack in the Alquion pilot plant

Benefits of
the Flexolyser™

Flexolyser electrolyser stack

Fully flexible hydrogen production reduces levelized cost of hydrogen (LCOH) by up to 25% compared to alternative electrolyser technologies. With unlimited start & stop capability, Flexolyser can maximize arbitrage between power trading and hydrogen production.

Fully flexible
Unlimited start & stop without degradation enabling up to 25% lower LCOH
Stack efficiency
Best in class performance
Fast response time
Direct load following of RES and short-term power trading
High-capacity stack
Reduced footprint
Standardized modules
Reduced cost and project lead times
Pressurised
Reduce OPEX and compression cost
RFNBO compliance
Designed to produce only when electricity is ‘green’ (Delegated Act compliant)

Why flexibility?

Full flexible operation allows an electrolyser to only produce when it makes economic sense. It benefits from increasing power price volatility can reduce the LCOH up to 25% compared to alternative technologies. This improved business model is made possible as the Flexolyser can be switched off and on without performance compromise, unlike conventional electrolysers. Fully flexible operations do not burden the grid and can attract incentive for grid congestion alleviation.

Alquion has developed an advanced Techno Economic Model to optimize LCOH by only producing when electricity prices are sufficiently low, or otherwise trade on the electricity market. The model is externally validated, can simulate specific use cases and compare this to alternative electrolyser technologies.

Want to know more? Get in touch!
Want to know more? Get in touch!
Electricity costs 50-60% of LCOH in NW Europe

​Hydrogen cost drivers as share of LCOH (%)

Chart: cost breakdown of hydrogen production – OPEX, power cost and CAPEX
Flexible operation can reduce LCOH up to 25%

​Project LCOH, per level of minimum load (EUR/kg)

Chart: hydrogen cost falls 10% at 20% minimum load and 25% with a fully flexible electrolyser (0% minimum load), compared with an inflexible system at 40% minimum load
Researcher testing an electrolyser cell in the Alquion labResearcher testing an electrolyser cell in the Alquion lab