Russell Andrews
As of 2026, a typical home solar installation in the UK costs between £5,000 and £10,000, with most households paying £6,000-£8,500 for a standard system - and 0% VAT applies to both the panels and the installation. The exact figure depends mainly on system size, your roof, and whether you add battery storage. (theecoexperts.co.uk)
By Russell Andrews
What a typical UK solar installation costs in 2026
MCS-registered installation data puts the average cost per kW installed in England at roughly £1,565-£1,686 as of early-to-mid 2026. Multiply that by the system size you need, and the numbers work out roughly like this:
| System size | Typical installed cost | Suits |
| 2.1kW | Around £4,000 | 1-2 bedroom home, modest usage |
| 4kW | £6,000-£8,000 | 3-bedroom home, average usage |
| 5kW+ | £8,000-£10,000+ | Larger homes or higher daytime usage |
These are installed prices including panels, inverter, mounting and labour, with VAT already at 0%. Treat any quote significantly outside this range - in either direction - as worth asking questions about. (fmb.org.uk)
What's included in that price
The panels themselves and the inverter that converts their output to usable AC electricity.
Mounting hardware, cabling and the electrical connection into your consumer unit.
Scaffolding or access equipment, and labour for the installation itself.
MCS certification paperwork, needed for Smart Export Guarantee eligibility later.
What can push the price higher: a roof that needs repair before panels go up, difficult access requiring extra scaffolding, an older consumer unit needing an upgrade, or a system designed around multiple roof faces rather than one simple array. Ask any installer for an itemised quote so you can see which of these apply to your property, rather than a single headline number.
Battery storage adds a separate cost
A battery is optional, not automatically part of a solar quote, and it's priced separately. Realistic 2026 installed costs:
| Battery size | Typical installed cost |
| 5kWh | £2,500-£4,000 |
| 10kWh | £4,500-£7,000 |
| 13.5kWh (e.g. Tesla Powerwall) | £7,000-£9,500 |
Battery adoption has grown quickly - UK households completed around 36,000 new battery installations in just the first half of 2026, with the large majority paired with solar rather than added to an existing system. That's evidence it's becoming a mainstream add-on, not proof it's automatically right for your household - the case depends on your evening electricity use and how much surplus your system actually generates. Our battery storage page walks through that decision in more detail.
Smart Export Guarantee: what it actually adds to payback
Once your system is MCS-certified, you're entitled to be paid for electricity you export to the grid rather than use yourself, through the Smart Export Guarantee (SEG). Rates vary a lot by supplier: as of August 2026 advertised UK export rates range from around 3p per kWh on basic tariffs up to 25p per kWh on premium ones, with an average closer to 13p. Some suppliers pay more if you also have a battery on a specific tariff. (uswitch.com)
As a rough illustration, a 3.5kW system exporting around 1,500kWh a year at 15p/kWh earns roughly £225 annually from SEG alone - on top of whatever you save by using your own generation instead of buying grid electricity at 24-30p/kWh. Shop around for your SEG tariff separately from your installation; you aren't obliged to use your installer's own supplier relationship. See our Smart Export Guarantee guide for how to compare tariffs properly.
So what's the actual payback period?
Most UK homeowners see solar pay for itself within roughly 7-15 years, depending on system size, how much of your own generation you use versus export, and your SEG rate. Panels are typically warrantied for 25 years, so most of that period is genuine savings after the system has paid for itself - not a guarantee, since usage patterns, tariffs and weather all vary year to year.
Getting a realistic quote for your home
Every property is different - roof orientation, shading, your existing consumer unit and your actual daytime electricity use all affect what system size and cost genuinely make sense for you. The figures above are a starting point for the conversation, not a substitute for a property-specific proposal. Our residential solar team can walk through your roof, your usage and realistic numbers before you commit to anything. Request a free quote to get a proposal specific to your home.