With 40% of Europe’s total wind resource, the UK is one of the windiest countries around. As a nation we’ve been harnessing this renewable power for centuries, using windmills to power machinery for crushing grain and pumping water. Today, modern wind farms convert wind power into electricity for use in our homes and businesses.
Currently only 1.6W of electricity is generated by off-shore wind farms, with high costs significantly slowing down growth in this area. The Government’s Renewable Energy Roadmap however, predicts that if a coordinated approach was adopted in the development of new wind farms, this capacity could be increased to between 11 and 18GW by 2020. This would also reduce the cost of off-shore wind farms by 8-15%, which is equivalent to £0.5 – £3.5 billion. Companies and individuals can reduce their own emissions and invest in the future of wind power by purchasing carbon credits from companies such as Eco Global Markets, which develops and funds renewable energy projects.
But aside from large-scale projects, is wind power really a cost effective energy resource for homes and businesses on a day-to-day basis? Let’s take a look at the most important factors when it comes to small-scale wind power.
When are the benefits?
Wind power is practically inexhaustible and available all year round. It is therefore a reliable buffer against rising gas and electricity rates. Wind turbines are normally installed with extra electricity batteries to store additional power to be used during low-wind conditions.
What are the costs vs. savings?
A typical 1kW building mounted wind turbine costs about £2000 to install, which includes connection to the national grid. Larger buildings such as business premises will require a 2.5kW system or higher, which start from £15,000.
A wind turbine can both save you money on your electricity bills and earn you cash through the Government Feed-in-Tariff (FIT). Any extra electricity generated by your system is fed back into the national grid and paid for by the government. Your total savings will depend on local wind conditions, with homes and businesses based by the sea or in the countryside generally seeing more savings than those in city centres. Based on an export rate of 3p/kWh and a generation tariff of 26.7p/kWh, a 6kW turbine could save you £3,200 a year. At those savings, it would take you 7 years to pay off the initial cost of the wind turbine. With regular maintenance, wind turbines are expected to last for over 20 years.
Is my building eligible?
The Government has built a useful wind prediction tool to help you work out whether wind power could be a suitable energy source for your home or business. An anemometer will provide a more detailed analysis of your wind conditions, but it’s recommended that you collect data over 12 months or more.
Resources
http://www.energysavingtrust.org.uk/Resources/Publications/Renewables/A-buyer-s-guide-to-wind-power
http://www.decc.gov.uk/en/content/cms/news/pn12_014/pn12_014.aspx
http://www.guardian.co.uk/environment/2012/feb/29/wind-power-british-industry