Heating up the liquefied natural gas
The liquefied natural gas that will soon be arriving at Dunkirk’s new terminal will be at a temperature of around minus 168 °C. To regasify it, water is heated up, usually by burning gas. But at Dunkirk, the water will be heated by using the calories in water that is normally discharged into the sea by the neighbouring Gravelines nuclear power plant. To transport this warm water to the LNG terminal and then return it to the area of the sea from which it was originally extracted, a 5 km underwater tunnel had to be built 50 metres below the seabed to connect the terminal to the power plant.