Some of the world's largest oil and gas companies - including Exxon Mobil, Royal Dutch/Shell, BP Amoco, Chevron and Texaco - think they can handle the challenge of developing mechanisms that allow companies to: sustain development, reduce greenhouse gas emissions, cut operating costs and fuel consumption, increase efficiencies and add profits. In some cases, companies have no choice but to develop such mechanisms. For example, many producing countries have introduced penalties for gas flaring, ranging from Nigeria's 12 cents/Mcf to Norway's $4.