The $30.5-billion project is expected to produce 18 mtpa of LNG once it starts up; commissioning is expected sometime in the mid-2020s. Canada’s investment includes $160 million to fund energy-efficient turbines, which the government says will minimize greenhouse gas emissions. One of the largest pre-sanction fields on the UK Continental Shelf, Rosebank, could significantly bolster the company’s UK portfolio. However, the field’s water depth and harsh environment may run development costs into the multibillion-dollar range. After suffering major setbacks, Chevron’s massive Big Foot project finally achieved first oil last November in the US Gulf of Mexico.