9 kva solar system price United Kingdom

What Does a 9kw Solar System Cost? For a fully installed 9kw solar system, the cost can fall between £10,400 and £13,000.. What Does a 9kw Solar System Cost? For a fully installed 9kw solar system, the cost can fall between £10,400 and £13,000.. With a properly sized 9 kW solar system, you can expect to save around £1276 per year by using your own solar energy. An 9 kW solar system (without a battery) typically costs around £11000 in the UK. [pdf]