Denmark has launched the world's largest CO2-based seawater heat pump, a 70 MW facility designed by MAN Energy Solutions, to heat 25,000 homes.

Replacing a coal plant that emitted 1.2 million metric tons of CO2 annually, the heat pump is expected to cut emissions by 120,000 tons per year.

It operates using liquid CO2 converted to steam, pressurised to produce heat, and integrates a sustainable wood chip boiler and electric boiler for peak demand.

Powered by wind and solar energy, the plant exemplifies scalable clean energy innovation. Leaders hope it inspires global adoption of similar systems to combat climate change.