It is now beyond doubt that the burning of fossil fuels by traditional types of power stations, and the consequent emissions of carbon dioxide, sulphur dioxide and nitrogen dioxide, are causing global warming and erratic weather patterns. This in turn is damaging the earth’s fragile eco-systems. Following a World Summit in Kyoto, Japan, when the governments of the world came together to address the pressing environmental problems faced by the planet, our government has set targets that 10% of electricity requirements are to be generated from renewable sources by 2010. In February 2003, the Welsh National Assembly put Wales on a path to a zero carbon electricity system and also set out its vision of Wales becoming a global showcase for sustainable clean energy production. In recognition for the need to promote renewable energy resources in Wales, the National Assembly has adopted a target of 4 Terra Watt Hours (Twh) (ie. 4 billion Kilo Watt Hours) of renewable energy production by 2010 and has set an objective of some 7 Twh by 2020. A significant proportion of this renewable energy will need to be provided by onshore wind, as this is by far the most advanced of all renewable technologies. If action is not taken locally to create alternative sources of energy, then climate change is likely to significantly alter the landscape of Wales forever. In order to overcome this global dilemma we must embrace the technologies available to us today.