Solar tiles cost slightly more than standard solar panels. However, when you consider that they are the roof material and solar panel combined, so you do not have to purchase a new roof, and additional solar panels. As a rough estimate (very much dependent on the product), Standard Solar Panels cost on average £1750 per kW, or £250 per square metre. Solar Tiles cost on average £2250 per kW or £320 per square metre. However it is worth remembering that solar tiles replace the roof materials, so you do not need to purchase and install roof tiles if you go for the solar tiled option. Plus UK customers pay ZERO VAT on solar panels and tiles between now and 2025. So it is an ideal time to make the investment. Please note these prices do not include installation costs (which are usually around 25% of the material cost), or any battery storage.