Installer Directory
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Janet Richardson

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Nov 06, 2023

Read Time : 4 Minutes

How Much a Wind Turbine Costs

Compared to other renewable energies for domestic or business use, wind turbine costs vary considerably between manufacturers and installers. Our advice, first of all, is to make sure that this is the right technology for you. Your site should:

  • Have a wind speed minimum of 5 metres per second (to test, you can install an anemometer).
  • Ensure there are no obstructions (e.g., other houses, trees) that could cause turbulence.
  • Make sure your building is not listed or has any restrictions imposed on it if you are thinking of installing a roof mounted system.
  • Decide if you have enough land for foundations if you are installing a free standing wind turbine.
  • Check whether you need planning permission to install a wind turbine.

Discover more about whether your site is suitable for a wind turbine. In general, free standing wind turbines are more expensive but more productive than roof mounted arrays.

Roof Mounted Wind Turbines

If you have a high roof that gets enough wind speed on a regular basis then you may well consider installing a roof mounted wind turbine. They vary in power from about 0.5 kW to 2.5 kW and can be used to supplement your electricity supply. Before you take the option of  getting a roof mounted turbine you need to understand that it will probably not provide all the electricity you need (though it may well take the edge of increasing fuel bills over the next 20 years). It almost certainly will not provide you with enough energy to profit from the Feed in Tariff. The average cost of a roof mounted wind turbine is around £2,000 which will also need to be maintained (The Energy Savings Trust estimate that this could cost £100 to £200 per year). Find our list of roof mounted turbine manufacturers here.

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Free-Standing Wind Turbines

For those that are serious about using wind as a means of providing renewable energy for a local source and perhaps benefitting from the Feed in Tariff, free-standing wind turbines offer a much more effective option. They are also more expensive to install. Cost depends on the size and the output that is desired. A 1.5 kW turbine would cost approximately £7,000 and deliver around 2,600 kW over a year depending on your location and wind speeds. A larger array that has a 15 kW capability would cost in the region of £70,000 and return approximately 36,000 kW of energy over a year. You can find a list of smaller wind turbine manufacturers (up to 100 kW) here. For all wind turbine systems you also need to take into account the maintenance costs and the price that needs to paid if you have to apply for planning permission. A wind turbine is built to last over 20-25 years but a number of important parts may need replacing before that date such as batteries or the inverter that converts your DC current to AC.

Financing for Wind Turbines

Finding the initial outlay for your wind turbine development can often be a problem. There are a number of financial institutions and grants available that you can now take advantage of if you are serious about using wind to power your house and the surrounding grid. Find out more about finance for wind turbines here.

The Smart Export Guarantee (SEG)

The Smart Export Guarantee (SEG) for wind turbines in the UK is a progressive policy designed to incentivize renewable energy generation and empower consumers to play a more active role in the transition towards a sustainable future. Introduced in 2019, the SEG replaced the previous Feed-in Tariff scheme and encourages the adoption of small-scale renewable technologies, particularly wind turbines, by providing financial rewards for surplus energy exported to the grid.

Under the SEG, homeowners and businesses with wind turbines can sell their excess renewable electricity to energy suppliers at competitive rates. This allows them to offset their energy bills while contributing to the UK's renewable energy capacity. The scheme promotes a decentralized energy landscape, where individuals and small-scale generators become crucial players in the overall energy mix.

The SEG operates on a market-driven approach, wherein electricity suppliers competitively bid for the surplus energy. This ensures that participants receive fair and competitive prices for their exports. The policy not only fosters a greener energy system but also encourages innovation and investment in renewable technologies, boosting the overall growth of the green energy sector in the UK.

Overall, the Smart Export Guarantee for wind turbines represents a step forward in the UK's commitment to combat climate change, enhance energy security, and empower individuals to actively contribute to a cleaner, more sustainable future.

The Energy Levy Exemption Certificate

If you are a business you may have to pay a levy or tax on the energy such as gas, electricity or coal that you is used in the day to day running of your company. If you install a renewable energy source then you may be eligible for an Energy Levy Exemption Certificate which could save you more money after your initial investment for the installation of a wind turbine.

Impact on Property Price

One other thing that you will need to take into account before installing a wind turbine on your premises is the effect that it may have on the property price. There is not much evidence currently available that having one installed with have a large adverse effect but a lot may depend on how efficient your system is. Of course, it will also depend on your location. If your wind turbine is on farmland and producing a good return on the Feed in Tariff it is more likely to add value to any sale. If you have a roof mounted system that simply takes the edge off your energy bills, you might find that aesthetic principles come into play. Find out more about the impact of wind turbines on property prices here. The table below gives you a rough idea of the initial costs of domestic wind turbine systems:

System size Indicative system cost (incl. VAT @5%) Approx. yearly system output*
1kW (roof-mounted) £1,500 1,750kWh
1.5kW (pole-mounted) £7,000 2,600kWh
2.5kW (pole-mounted) £12,500 4,400kWh
5kW (pole-mounted) £23,500 8,900kWh
10kW (pole-mounted) £45,000 21,500kWh
15kW (pole-mounted) £70,000 36,000kWh

*We have assumed the average UK wind speed of 5.6m/s for the sake of illustration. The actual system output is predicated upon a large range of factors. Larger, higher output turbines also tend to be mounted at greater heights, where wind speeds are higher.

Depending on the type and size of the turbine, there are also annual system maintenance costs which one must bear in mind, though these tend to be relatively small. Since they rely on relatively simple mechanical processes, the turbines themselves tend to have a long life, and typically come with a service warranty period of 10-20 years. If the wind turbine system contains batteries for the storage of the electricity generated, these will probably need to be replaced around every 5 to 10 years.

Related Blog Articles: Offshore Wind Turbines – A financial cash cow or a political real world energy solution.

 

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