Dutch startup Battolyser raises €30M for battery that makes hydrogen
What's the deal? Battolyser Systems, a Rotterdam deep-tech scaleup led by chief executive officer Mattijs SleeDealroom has a profile for this one. Try Dealroom →, has raised €30 million in a growth equity round.
Its machine is both a battery and an electrolyzer. It stores solar and wind energy during the day; when full, it splits water to produce hydrogen.
The pitch: two energy-transition problems — storing surplus power and making green hydrogen — solved in one box.
Why now? The funding follows a 1MW industrial pilot at German energy giant RWEDealroom has a profile for this one. Try Dealroom →'s Magnum plant in Eemshaven, Netherlands.
That proved the technology works outside the lab. The cash will fund larger 2.5MW and 5MW modules aimed at factories and the power grid.
What could go wrong? Scaling heavy physical equipment is slow and capital-intensive, far harder than shipping an app.
The device must also prove it can compete on cost and reliability against dedicated batteries and electrolyzers at industrial scale.
The signal: Battolyser is now at breakout stage, a profile that fits a deep-tech scaleup moving from a 1MW pilot at RWE toward 2.5MW and 5MW modules for heavy industry. Its core promise — storing electricity as a battery while splitting water into hydrogen by electrolysis — collapses two energy-transition machines into one, exactly the kind of dual-function bet investors are backing as factories and grids hunt for cheaper, more flexible clean-energy hardware.
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