One Saturday in April, Dutch engineers manoeuvred a giant drill into position in the reclaimed, industrial extension of the Port of Rotterdam, and began boring a hole under the seawall. Nearby, sections of metal pipe waited to be lowered into the breach.
The operation was a step forward for Europe’s most advanced scheme to capture carbon dioxide (CO2) from industry, then bury the planet-heating gas under the North Sea. After years of delay, a joint venture known as Porthos, an acronym for Port of Rotterdam CO2 Transport Hub and Offshore Storage, is due to begin operating in 2026.