Wind Turbines - What happens next?
If you are still interested in using renewable energy the first thing to check is your average wind speed via the DTI database. If this is shows that the wind turbine is a viable option then give us a call on 0845 094 1752 or email sandy@alvestaenergy.com in order to arrange for one of our staff to call, explain your options, examine your electrical supply from the grid and to perform a full planning appraisal – including submission of the relevant forms. We charge £500 for this service which is fully refundable against the cost a new turbine.
We will look at your site and its suitability for a wind turbine but we will also take all your energy needs into account and it may be that other products would give you a better return compared to a wind turbine or look at the turbine as part of an integrated package. We will provide you with a quotation according to our recommendation detailing the options that are available to you. Please note that Alvesta can take no responsibility for the success or otherwise of the application.
Average wind speed (m/s) |
|
3 kW Annual Output (kWh) |
|
6 kW Annual Output (kWh) |
|
10 kW Annual Output (kWh) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4 |
|
2,632 |
|
3,134 |
|
2,604 |
4.5 |
|
4,398 |
|
5,661 |
|
8,501 |
5 |
|
6,550 |
|
10,718 |
|
17,642 |
5.5 |
|
8,964 |
|
17,770 |
|
29,503 |
6 |
|
11,532 |
|
26,322 |
|
43,557 |
6.5 |
|
14,162 |
|
35,926 |
|
59,271 |
7 |
|
16,781 |
|
46,176 |
|
76,105 |
7.5 |
|
19,334 |
|
56,710 |
|
93,517 |
8 |
|
21,779 |
|
67,211 |
|
110,955 |
8.5 |
|
24,095 |
|
77,404 |
|
127,866 |
9 |
|
26,276 |
|
87,059 |
|
143,688 |
|
|
|
|
|
|
|
* kW (kiloWatt) = 1000 watts: One 100-watt light bulb on for an hour, is 0.1 kWh (100/1000)
This table shows the power output of our three best selling turbines at various wind speeds in kilowatt hours per annum.
The graph above is the power curve for a 10kW Alvesta VAWT showing the power output in wind speeds from zero to 20 m/s. You will note that the amount of power generated continues to increase substantially right up to a wind speed of around 13 m/s when the capacity of the alternator limits it.
If your planning application is successful, or the advice is that you do not require planning permission, you then need to place a firm order with us accompanied by a deposit of 75% of the quoted cost.
As soon as your deposit is received a process starts which is calculated to result in the installation and commissioning of your turbine around 8 weeks later. The balance is payable immediately after your turbine has been tested and cleared by our quality team. We cannot install turbines in high winds for safety reasons so there may be a slight delay in completing the installation if it is in a period of sustained high winds.
Generally you are responsible for the ground works such that the site is prepared and ready for our engineers to install the turbine. We can undertake ground works locally but the concrete needs time to cure, delaying the erection of the turbine.