Renewable hydrogen is vital for decarbonizing heavy industries. But to scale it sustainably, we must reduce both cost and water use. At Alfa Laval, we believe energy efficiency is the fastest way to do both.

Each 10 MW electrolyzer needs 50–60 m³ of clean water daily, making water quality a growing challenge. At the same time, regulations are tightening.

Our solution: turn waste into value by using electrolyzer waste heat for thermal desalination. The result? Higher efficiency, lower costs, and less pressure on freshwater resources.
By recovering 20–40% of excess heat, we cool the system and generate clean water in one smart step.

With Alfa Laval HyDuo, waste heat purifies sea, river, or brackish water—producing cleaner water than single-stage RO and extending electrolyzer life. It’s a strong answer to the cost and water barriers of renewable hydrogen—especially in water-stressed regions.

Alfa Laval offers the widest range of energy-efficient heat transfer solutions for hydrogen production, transportation, distribution, storage, and use. With 90 years of experience, we’re a trusted partner across the hydrogen value chain.

Technologies featured at the event:

• Alfa Laval HyDuo freshwater generator
• GPHE and AlfaNova for electrolyser stacks
• PCHE for hydrogen tank station pre-cooling
• Industrial cryogenic pump LH₂ – NEW