Solar panel prices in the UK have shifted significantly over the past few years. Government incentives, supply chain changes, and a surge in demand have all played a role. If you're getting quotes in 2026, you need current numbers — not advice based on 2023 pricing.
We've analysed hundreds of UK solar quotes through SolarVerify to give you a clear picture of what homeowners are actually paying right now.
The Short Answer
For a typical 4kWp solar panel system without a battery, expect to pay between £4,500 and £6,500 depending on panel quality and your location. That works out to roughly £1.10–£1.60 per watt installed.
Add a battery and the total typically rises to £8,000–£13,000, depending on battery size and brand.
But these ranges are wide for a reason — the details matter enormously.
What Affects the Price?
Equipment Tier
The single biggest price variable is equipment quality. We categorise equipment into three tiers based on manufacturer reputation, efficiency ratings, warranty terms, and long-term reliability data.
Premium equipment (panels from Aiko, LONGi Hi-MO series, Canadian Solar HiKu; inverters from Sigenergy, SolarEdge, Enphase) typically adds 15–25% to the system cost compared to budget alternatives. However, premium panels usually produce more energy per square metre and come with stronger 25-year warranties, so the lifetime cost per kWh generated is often lower.
Budget equipment can be perfectly functional, but it's important to know what you're getting. If a quote seems unusually cheap, check whether the panels and inverter are from well-established manufacturers with a UK service presence.
System Size
Larger systems have a lower cost per watt because installation labour and scaffolding costs are spread across more panels. A 3kWp system might cost £1.40/W while a 6kWp system from the same installer might come in at £1.10/W.
Battery Inclusion
Batteries are the fastest-moving part of the market. Prices have dropped substantially and are expected to continue falling. In 2026, expect to pay roughly £400–£700 per usable kWh of battery storage. A popular 10kWh battery like the Sigenergy SigenStor typically costs £4,500–£6,000 when installed as part of a solar package.
When comparing quotes that include batteries, always separate the solar cost from the battery cost. Some installers bundle them to make the overall price look competitive when one component might be overpriced.
Region
Prices vary across the UK. London and the South East tend to be 10–15% more expensive than the national average due to higher labour costs. Scotland, Wales, and the North of England are typically at or slightly below the national average. These aren't hard rules — a good installer in Manchester might be cheaper than an average one in Bristol — but regional benchmarks help you spot outliers.
Price Benchmarks: What We're Seeing in 2026
| System | Budget | Mid-Range | Premium |
|---|---|---|---|
| 3kWp (solar only) | £3,500–£4,200 | £4,200–£5,000 | £5,000–£6,000 |
| 4kWp (solar only) | £4,500–£5,500 | £5,500–£6,500 | £6,500–£8,000 |
| 6kWp (solar only) | £6,000–£7,500 | £7,500–£9,000 | £9,000–£11,000 |
| 4kWp + 5kWh battery | £7,000–£8,500 | £8,500–£10,000 | £10,000–£12,000 |
| 4kWp + 10kWh battery | £8,500–£10,500 | £10,500–£12,500 | £12,500–£15,000 |
These figures include installation, scaffolding, and electrical work. VAT on residential solar installations is currently 0% in the UK, so the quoted price should be the final price. If an installer quotes VAT on top, query it.
How to Tell If Your Quote Is Fair
The quickest way to benchmark your quote is to calculate the price per watt and compare it to the ranges above for your system size and equipment tier. But price alone doesn't tell the full story. A quote at £1.20/W with premium Aiko panels and a Sigenergy inverter is better value than a quote at £1.00/W with unbranded panels and an unknown inverter.
Things that justify a higher price: premium panel and inverter brands, longer warranties, an MCS-certified installer with a strong track record, and a company that uses its own installation team rather than subcontractors.
Things that don't justify a higher price: vague descriptions of "tier 1" equipment, brand names you can't find online, and pressure to sign quickly before a "discount expires."
Should You Go Premium or Budget?
It depends on your priorities. If you're staying in your home long-term and want maximum return on investment over 20–25 years, premium equipment typically pays for itself through higher energy generation and fewer replacement costs. If budget is tight and you mainly want to reduce your electricity bills now, a well-reviewed mid-range system offers the best balance of cost and quality.
What we'd avoid is the absolute cheapest option from an installer you can't find much information about. Solar is a 25-year commitment — the company needs to be around to honour the warranty.