There are notable gas deposits in about half of Africa's 55 countries, and there is still more potential out there. For many years, gas has been produced and exported from North Africa, especially Algeria, Egypt, and Libya. Nigeria is West Africa's largest natural gas producer, and Equatorial Guinea just opened an LNG liquefaction plant, while Angola began shipping LNG in 2013. The massive deposits off the coasts of Tanzania and Mozambique were discovered several years ago, but despite numerous negotiations, no LNG export terminal proposal has been approved. Much of Africa's LNG potential may not be realized until the middle of the following decade, based on project development schedules.