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The scientific community has warned that there is an urgent need for a transition to a low carbon economy if we are to avert a global catastrophe due to climate change.
The concentration of CO2 in the atmosphere reached 400ppm in 2014, up from 280ppm in pre-industrial times, corresponding to 375,000,000,000 tonnes of CO2 released into the atmosphere since 1750.
Wind is a clean, plentiful renewable energy source.
The UK has relatively good and easily exploited wind resources:
- It has 40% of Europe’s wind due to its position in the North West of Europe where it bears the full brunt of weather systems coming in from the North Atlantic.
- It has the longest coastline in Europe (the island of Great Britain has a coastline of 17,820 km according to the Ordnance Survey).
- It has many shallow waters, ideal for off-shore wind.
- It has many sparsely populated upland areas, mainly in the North which is also the region with the most significant wind resources.
There are currently (Dec 2012) 361 projects live in the UK, which equates to 4,136 turbines, 5,054 MW of on-shore capacity and 2,679 MW off-shore capacity, i.e. a total of 7,7733MW.
The United Kingdom was the world leader in off-shore wind in 2012.
[In February 2017 it was reported that the construction value of offshore wind reached £4.1 billion in 2016, increasing from £2.45 billion in 2015]
 Public perception of wind power
There are some vocal opposition groups to wind power who object to new wind farms being built in their area, claiming that they are noisy, a danger to wildlife and a blight on the countryside.
However, by and large, the British view wind power in a favourable light. In surveys carried out in 2012 for RenewablesUK, the body which champions UK wind and marine energy, and for the Sunday Times, it emerged that:
- 77% of Britons are in favour of electricity from renewables.
- 73% of Britons support offshore wind and 66% onshore wind installations.
- Only 17% of Britons support additional gas/coal power stations.
- Only 40% of Britons support additional nuclear power stations.
 Advantages and disadvantages of wind power
- The main advantage is the low carbon nature of wind power. It is a completely 'clean' energy, other than the manufacture and construct on of the pylons, blades and turbines.
- Wind power generation is relatively silent.
- The wind is strongest in the winter months when energy demand is at its highest.
- Many jobs are created in designing, manufacturing, and servicing the equipment.
- A 7% reduction in UK carbon emissions versus 1990
- A quarter of a million UK jobs by 2050
- Annual revenues of some £19 billion by 2050
- The main disadvantage is the unpredictable nature of wind speeds resulting in turbines being immobile for significant periods.
- It is difficult to store generated power.
- Wind turbines tend to be large and very visible within the countryside.
 International Comparisons
The 8 countries with the most installed capacity are (2011 figures, GW):
- China (62.4)
- USA (46.9)
- Germany (29.1)
- Spain (21.7)
- India (15.9)
- Italy (6.7)
- France (6.6)
- United Kingdom (6.5)
The UK had the 5th largest installed capacity in Europe at the end of 2011; this reflects its fairly late uptake of wind power compared for example with Germany, which has by far the most capacity, or Spain.
Installed capacity in Europe, end of 2011 (MW)
Germany had the largest new installed capacity in Europe in 2011 (2,100 MW) with the UK following at 1,300 MW, of which 752 MW was offshore wind. Spain came third (1,050 MW) and then France (830 MW).
 Related articles on Designing Buildings Wiki
- Carbon capture and storage.
- Energy Act.
- Energy storage.
- Geothermal pile foundations.
- Ground energy options.
- Large scale solar thermal energy.
- Renewable energy.
- Rainwater harvesting.
- Solar photovoltaics.
- Solar thermal energy.
- Wind farm.
- Wind turbine.
 External references
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