PEM electrolysis for high-purity hydrogen production
Engineered to meet the demands of industrial hydrogen production while supporting the global shift toward renewable energy.
The focus on PEM electrolysis
With extensive experience with all major electrolyzer technologies — including alkaline, AEM (anion exchange membrane), and SOEC (solid oxide electrolyzer cell) — we focus exclusively on PEM (proton exchange membrane) electrolysis technology.
Why PEM?
PEM technology offers a solid-state approach to hydrogen production, with a membrane that facilitates efficient proton transfer. With superior performance and an unmatched safety profile, this technology is compatible with dynamic, renewable-powered operations and plays a vital role in advancing clean energy solutions.
Meet the demands of industrial hydrogen production
Built on real-world insights, we use PEM electrolysis in our electrolyzer platforms to offer dependable performance for hydrogen production at scale in demanding industrial settings.
Where electrolysis takes place
At the heart of our PEM electrolyzers are cell stacks. Built on the robust 1500E cell stack design originally developed in 2014, we offer two PEM cell stacks to support mid-scale and large-scale hydrogen production. This platform has been continuously improved through extensive field experience and iterative design enhancements, ensuring high performance, reliability and scalability.
For mid-scale production
The 250 Nm³/h PEM cell stack is integrated into our HyLYZER® 500 product, which is ideal for flexible and modular deployments.
For large-scale production
The 500 Nm³/h PEM cell stack powers our HyLYZER® 1000 platform, which is optimized for high-capacity industrial applications.
Enabling green hydrogen with PEM electrolysis
PEM electrolyzers play a vital role in the production of green hydrogen — clean, or zero-emissions, hydrogen created through water electrolysis powered by electricity from sources like solar, wind and hydropower.
Green hydrogen is a key component to accelerating the shift to clean energy. As it gains momentum around the world, the commercialization of electrolyzers can make green hydrogen more widely available and transform global energy systems, lower emissions and reduce the environmental impact of essential industries and sectors.
Tracing the path of PEM
advancements
We have evolved our PEM electrolysis technology through more than two decades of focused innovation, beginning with Hydrogenics and advancing through Cummins Inc. to its current form with Accelera.
- 1995 – Initiated PEM fuel cell development at Hydrogenics
- 1999 – Released first PEM electrolyzer for lab-scale applications (1 Nm³/h, 92E platform with 92 cm² active area)
- 2014 – Developed 250 Nm³/h PEM cell stack (1500E platform, 1500 cm² active area)
- 2015 – Deployed first MW-scale PEM electrolyzer at Windgas Reitbrook (Germany)
- 2017 – Introduced dual-stack PEM system at HyBalance (Denmark), forming the basis of the HyLYZER® 500 product architecture
- 2018 – Delivered first indoor PEM system for the Markham Energy Storage project (Canada), validating dynamic operation and grid balancing capabilities
- 2020 – Commissioned 20 MW PEM electrolyzer in Canada, validating the HyLYZER® 1000 product and our 500 Nm³/h cell stack
- 2023 – Delivered 25 MW PEM system to NextEra (HyLYZER® 1000, Florida Power & Light, US)
- 2025 – Delivered 35 MW PEM electrolyzer to Linde Niagara (HyLYZER® 1000, New York, US)
- 2025 – Awarded 100 MW PEM project for BP Lingen (HyLYZER® 1000, Germany)
Partnering with Accelera on
hydrogen production
Choosing the right electrolyzer provider means choosing confidence. You want a partner who not only understands your goals but can deliver reliable technology, expert support and long-term value — so your hydrogen project runs smoothly from day one and scales with your needs.