Suncor Energy Inc is an integrated energy company. The company's operations include oil sands development, production and upgrading, offshore oil production, petroleum refining in Canada and the U.S., and the company's Petro-Canada retail and wholesale distribution networks. The company is developing petroleum resources while advancing the transition to a low-emissions future through investment in power, and renewable fuels. It also conducts energy trading activities focused principally on the marketing and trading of crude oil, natural gas, byproducts, refined products and power. The company's operating segments include Oil Sands, Exploration and Production, and Refining and Marketing. Geographically, the company generates a majority of its revenue from Canada.