The energy policy of the United Kingdom refers to the United Kingdom's efforts towards reducing energy intensity, reducing energy poverty, and maintaining energy supply reliability. The United Kingdom has had success in this, though energy intensity remains high. There is an ambitious goal to reduce carbon dioxide emissions in future years, but it is unclear whether the programmes in place are sufficient to achieve this objective. Regarding energy self-sufficiency, UK policy does not address this issue, other than to concede historic energy security is currently ceasing to exist (due to the decline of North Sea oil production). The United Kingdom historically has a good policy record of encouraging public transport links with cities, despite encountering problems with high speed trains, which have the potential to reduce dramatically domestic and short-haul European flights. The policy does not, however, significantly encourage hybrid vehicle use or ethanol fuel use, options which represent viable short term means to moderate rising transport fuel consumption. Regarding renewable energy, the United Kingdom has goals for wind and tidal energy. The 2007 White Paper on Energy set a target that 20% of the UK's energy must come from renewable sources by 2020. The current energy policy of the United Kingdom is the responsibility of the Department for Business, Energy and Industrial Strategy (BEIS), after the Department of Energy and Climate Change was merged with the Department for Business, Innovation and Skills in 2016. Energy markets are regulated by the Office of Gas and Electricity Markets (Ofgem). Areas of focus for energy policy by the UK government have changed since the Electricity Act 1989 and the Gas Act 1986 privatised these utilities. The policy focuses of successive UK governments since the full liberalisation of gas and electricity markets in 1998 and 1999 have included managing energy prices, decarbonisation, the rollout of smart meters, and improving the energy efficiency of the country's building stock. Overview The 2007 white paper: "Meeting the Energy Challenge" set out the government's international and domestic energy strategy to address the long term energy challenges faced by the UK, and to deliver four policy goals: To put the UK on a path to cut carbon dioxide emissions by some 60% by about 2050, with real progress by 2020; To maintain reliable energy supplies; To promote competitive markets in the UK and beyond, helping to raise the rate of sustainable economic growth and to improve productivity; and