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We're cutting the cost of hydrogen.

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A groundbreaking project by Nel to transform how hydrogen is made and manufactured.

Calluna is Nel’s flagship initiative to commercialise a new generation of alkaline pressurised electrolysers – smarter, smaller, and more sustainable. Through an advanced, automated manufacturing facility, the project aims to drive down the cost of green hydrogen, making renewable energy truly viable at scale.

What makes Calluna different?

High volume, low cost

Leveraging automation and production know-how from Nel’s top-tier facilities, Calluna combines advanced tech with modern manufacturing to drive down costs and ramp up output.

Zero emission hydrogen

Using only green electricity and water, the Calluna-produced PE electrolyser avoids all greenhouse gas emissions compared to traditional fossil-based hydrogen.

Modular & scalable

Each 25 MW pressurised electrolyser module is prefabricated, compact, and easily replicated—designed for outdoor use, rapid deployment, and flexible scaling.

Lean by design

Smaller size, less steel, and lower resource use—each electrolyser saves emissions on every level, avoiding 33.5 million tonnes of CO₂ in just ten years.

Driving the European green transition

Calluna is a key enabler of Europe’s ambitious climate goals:

  • Supports the European Green Deal and Fit for 55 targets
  • Aligns with the Net-Zero Industry Act and REPowerEU
  • Helps secure Europe’s clean tech leadership and energy independence

Economic Impact

  • 400 direct jobs created in high-tech manufacturing
  • Boosts local supply chains and research collaboration
  • Sparks growth in regional green industry clusters

A Blueprint for the future

Calluna isn’t just a plant – it’s a prototype for what European clean manufacturing can be. With its smart design and replicable model, it sets the stage for rapid scaling across Europe and beyond.

EU Coordinator:

Helene Aamodt

helaa@nelhydrogen.com

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