Solar panel suitability

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Is solar electricity suitable for my home?

South facing

Solar panels need to be installed on a roof or wall that is 90 degrees from south, in order to get the most out of the product. You also need to make sure that trees or other buildings will not overshadow the PV cells as they’ll be less effective in the shade.

Strong tiles

You also need to ensure that your roof tiles are strong enough to support the project. Solar panels are not light, and tiles must be able to take their weight, especially if built on existing tiling.


Planning permission is generally not an issue with solar panelling as it’s not needed, providing the equipment is below a certain size. However, it’s always best to double check with a local planning officer, especially if the building if listed or in a conservation area.

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Solar panels costs, savings and maintenance

  • A typical solar panel system costs around £12,000.
  • However, PV cells can cost £4,000 to £5,000 per KWp. But, the installation costs will decrease as the size increases. The average size is 2.7 KWp.
  • The larger the KWp capacity, the more electricity it will generate. In turn, larger solar panel systems will save you extra money on bills.
  • Solar panels that are built into an existing roof are more expensive than just sitting them on top of the old tiling.
  • If you need major roofing repairs, PV tiles can offset the cost of tiles.
  • The average solar panelling unit will cut your carbon footprint by up to 1.2 tonnes of carbon dioxide every year.
  • If you are eligible to receive the government’s feed-in tariff, PV could generate savings and income of around £1,170 every year.
  • The maintenance needed for solar panelling is very small. All that’s required is that the PV cells remain clean and you ensure that nothing overshadows the panels.