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ributors to UK greenhouse gas emissions; according to statistics CO2 accounted for about 85 per cent of the UK's greenhouse gas emissions in 2006. In order to reduce emissions, the 2007 UK Energy White Paper sets out an objective to cut the UK's carbon emissions by 60% by 2050, with real progress by 2020. One way of achieving those targets would be by generating our energy from sources that produce very low or zero levels of greenhouse gases such as renewable energy sources. Renewable energy is “an integral part of the Government's strategy for reducing carbon emissions as renewable energy resources produce very little carbon or other greenhouse gases”. (Commission, 2006)

In 2006, about 75 percent of UK electricity was generated from fossil fuels, about 19 percent from nuclear power, and the remaining 4 percent from other renewables (Digest of UK Energy Statistics (DUKES), 2007). The UK has one of the most suitable markets for the development of renewable sources of energy due to its geographic location; especially in wind, wave and tidal energy. However, the UK is also rich in fossil fuels and until the climate change issue became evident the successive governments have neglected renewable energy as an alternative source of our main energy supply. The UK Government initially started to show support for development of renewable energy sources in 1990, when renewables became a part of the so-called non-fossil fuel obligation (NFFO), originally set up to protect nuclear power. The issue of climate change and high levels of greenhouse gases has given a new drive to the development of renewable energy in the UK. As part of the Climate Change Programme, in June 2000 the UK government replaced NFFO by the Renewables Obligation (RO) in England and Wales with the main aims to encourage further the development of the UK renewable energy industry and to achieve a 10 percent share of renewables in electricity generation by 2010 (Environmental Policy Integration).

Overall the renewable energy contribution is increasing. Total electricity generation from renewables in 2006 amounted to 18,133 GWh, an increase of 1,263 GWh (+7½ per cent) on 2005. The main contributors to this substantial increase were 1,072 GWh from onshore wind (+43 per cent), 248 GWh (+62 per cent) from offshore wind 134 GWh (+3 per cent) from landfill gas and 119 GWh (+12 per cent) from municipal solid waste combustion (UK Electricity Statistics,2007).

One of the other main drivers for the development of alternative energy sources in the UK aside from climate change issues is the security of energy supply. The UK continues to heavily rely on the diminishing sources of fossil fuels, such as coal, gas and oil, which are increasingly sourced in geopolitically unreliable areas, such as Venezuela, Nigeria and Russia. According to the UK Energy Statistics 12 percent of the UK's gas supply came from gas imports (Digest of UK Energy Statistics (DUKES), 2007). Therefore further development of alternative energy sources in the UK will reduce the amount of imported fossil fuels, as well as have a key role in resolving the climate change issue.

In order to maintain the UK's energy supply and to achieve the carbon dioxide targets set in the Kyoto Protocol under which the UK has com本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。