Only 15 per cent of Tanzanians had access to electric power in 2011, however rising to 35.2 per cent in 2018. The government-owned Tanzania Electric Supply Company Limited (TANESCO) dominates the electric supply industry in Tanzania. The country generated 6.013 billion kilowatt hours (kWh) of electricity in 2013, a 4.2 per cent increase over the 5.771 billion kWh generated in 2012. Generation increased by 63 per cent between 2005 and 2012; Almost 18 per cent of the electricity generated in 2012 was lost because of theft and transmission and distribution problems. The electrical supply varies, particularly when droughts disrupt hydropower electric generation; rolling blackouts are implemented as necessary. The unreliability of the electrical supply has hindered the development of Tanzanian industry. In 2013, 49.7 per cent of Tanzania's electricity generation came from natural gas, 28.9 per cent from hydroelectric sources, 20.4 per cent from thermal sources, and 1.0 per cent from outside the country. The government has built a  gas pipeline from Mnazi Bay to Dar es Salaam. This pipeline was expected to allow the country to double its electricity generation capacity to 3,000 megawatts by 2016. The government's goal is to increase capacity to at least 10,000 megawatts by 2025.