A typical 4kWp solar panel system in the UK costs between £5,000 and £8,000 fully installed (2024 prices). Costs depend on system size, panel type, installer, and roof complexity. A 4kWp system covers the electricity needs of an average household of 3–4 people. Larger systems cost more but generate more electricity. Always get at least 3 quotes from MCS-certified installers.

Currently, there are no large-scale government grant schemes specifically for residential solar panels in England (the Green Deal Home Improvement Fund was abolished in 2015). However, the Smart Export Guarantee (SEG) means you earn money for excess electricity you export back to the grid. Some energy suppliers offer SEG tariffs. Low-income households in England may qualify for the Great British Insulation Scheme.

The SEG is a government scheme requiring energy suppliers with over 150,000 customers to offer tariff rates for excess solar electricity you export to the grid. SEG rates vary between suppliers — typically 3–10p/kWh. You need an export meter (SMETS2 meter or a Generation Meter) to receive SEG payments. Compare SEG tariffs annually as rates change. Not all suppliers offer SEG.

Yes. Solar panels generate electricity from daylight, not direct sunlight. They produce less electricity in winter due to shorter days and lower sun angle, but still generate power. A typical UK system generates 50–75% of its annual output between April and September. In December, generation may be only 5–10% of summer levels. Battery storage helps maximise self-consumption year-round.

Most reputable solar panels come with a 25–30 year performance warranty, meaning they are guaranteed to produce at least 80% of their rated output at year 25. Quality panels degrade at around 0.5% per year. Inverter lifespan is typically 10–15 years and replacement costs £500–£1,500. A well-installed solar system should reliably generate electricity for 25+ years.

In England, most domestic solar panel installations do not need planning permission if they are on a roof and meet certain conditions (not on a flat roof with more than 0.2m height increase, not on a listed building, not in a conservation area where panels would be visible from the road). Scotland and Wales have different rules. Always check with your local planning authority if in doubt. Listed buildings almost always require consent.