A large private Chinese firm called ENN Group has plans to build 50 natural gas stations in the United States this year. The move is designed to capture a share of the heavy-duty truck fueling market that uses natural gas, which is cheap and abundant in the United States. In order to build a natural gas station, roughly one million dollars is required as an initial investment. Thus far, ENN Group has invested $50 million, and its U.S. joint venture partner declines to say how much it has invested. This natural gas market is expected to see significant growth in the near future, because shipping companies can save $2.00 per gallon of fuel when switching from diesel to natural gas. By making natural gas fueling stations more common, ENN Group hopes to convince more shipping companies to switch from diesel powered trucks to natural gas powered trucks. ENN Group will face stiff competition from firms that are already established in the United States. Its competitors include Clean Energy Fuels Corp (backed by T. Boone Pickens and Chesapeake Energy) and Royal Dutch Shell Plc.