Install a large solar panel on the roof
240KW/400KW industrial rooftop - commercial rooftop - home rooftop, solar power generation system.
A 4kW solar panel system is suitable for the average home in the UK and costs around £5,000 – £6,000. The estimated average yearly savings you can expect with a solar panel system range from £440 to £1,005. If you install a 4kW solar panel system, you will break even on your investment in about 8 years..