Denmark inaugurated one of Europe’s few low-carbon hydrogen plants on Monday, a sector touted as a key to cleaner energy but plagued with challenges.

Using eight electrolysers powered by solar and wind energy, the HySynergy project will produce around eight tonnes of hydrogen a day in its first phase, to be transported to a nearby refinery and to Germany.

Hydrogen has been touted as a potential energy game-changer that could decarbonise industry and heavy transport.

Unlike fossil fuels, which emit planet-warming carbon, hydrogen simply produces water vapor when burned.

But producing so-called “green hydrogen” remains a challenge, and the sector is still struggling to take off in Europe, with a multitude of projects abandoned or delayed.

Originally scheduled to open in 2023, the HySyne

See Full Page