ABB wins Statoil order to install high voltage power subsea cables to the 'Troll' A gas platform on the western coast of Norway. The Troll A concrete deep water structure is the world’s largest natural gas production platform, 473 meters tall and weighs 1.2 million tons; it is the tallest structure ever to be moved by mankind. The platform can produce as much as 120 million cubic meters per day; it contains approximately 40 percent of the natural gas reserves on the Norwegian Continental Shelf and is a cornerstone of the gas supply to the European Continent.