In 2010, Vassallo Builders was awarded the subcontract to handle all civil works related to the Extension of the Delimara Power Station by the main Danish contractor, BWSC. Works began in the second half of 2010 and was completed in 2012. The project, comprised the construction of a number of buildings, including the steel erection of the powerhouse, as well as the foundations on which large generators, tanks, chimneys and other power generation-related equipment were to be placed.