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Frequently Asked Questions
A typical 4kWp domestic system will cost around £5700 plus VAT @ 5%
All the major panel manufacturers warranty their panels for 10 years with a typical performance warranty at 25 years of 85%.
Our installation works are covered by an industry standard 5 years. Inverter warranties can be between 5-10 years depending on the manufacturer however these can be extended to 25 years for an additional cost.
Domestic properties will not generally need planning permission. There are some exceptions however such as listed buildings and properties in a National Park, Area of Outstanding Natural Beauty or a conservation area. In all cases you should contact your local authority to seek clarification. More information on planning permission can be found here .
In simple terms you get paid by the Feed in Tariff for every Kilo Watt of power you generate. This is set by the government at a guaranteed rate of 16p per kWp for the next 20 years. On top of this you receive an extra 4.5p per every kWp you generate that you can pass on to the National Grid.
As a rough guide, you need approx 27 sqm to accomodate a typical 4 kWp system. Please be aware there are now a number of manufacturers producing high efficiency panels which are smaller and therefore take up less roof space.