“The United Kingdom (UK) is the largest producer of oil and the second-largest producer of natural gas in the European Union. The United Kingdom (UK) is the fifth-largest economy in the world in terms of gross domestic product. Following years as a net exporter of crude oil and natural gas, the UK became a net importer of both fuels in 2004 and 2005, respectively. Production from UK oil and natural gas fields peaked in the late 1990s and has generally declined over the past several years as the discovery of new reserves and new production has not kept pace with the maturation of existing fields. Production of petroleum and other liquids increased in 2015, as investments made when oil prices were high came to fruition, but the UK remains a net importer. The UK became a net importer of petroleum products in 2013, making it a net importer of all fossil fuels for the first time. Petroleum product imports increased in 2014. The UK government, aware of the country’s increasing reliance on imported fuels, has developed key energy policies to address the domestic production declines. These policies include: using enhanced recovery from current and maturing oil and natural gas fields, promoting energy efficiency, decreasing the use of fossil fuels and thus reliance on imports, promoting energy trade cooperation with Norway, and decarbonizing the UK economy by investing heavily in renewable energy. However, for the UK to decarbonize its economy, the country needs large investments in energy infrastructure. Renewable energy use, particularly in the electric power sector, has more than doubled over the past decade (2005-14). However, petroleum and natural gas continue to account for most of UK’s energy consumption. In 2014, petroleum and natural gas accounted for 36% and 33%, respectively, of total energy consumption^. Coal also continues to be a significant part of total energy consumption (16% in 2014). Energy use per unit of gross domestic product (GDP) in the UK is one of the lowest among western economies. The UK has seen total primary energy consumption decline by almost 20% over the past decade (2005-14). This decline resulted from smaller contribution of energy-intensive industry to the economy, economic contraction, and improvements in energy efficiency…”