Solar Panels Price Comparison: What a UK Install Really Costs

Solar panel pricing is hard to compare because you are rarely buying panels alone - you are buying a whole installed system, including the inverter, mounting, scaffolding, wiring and labour. The same home can get very different quotes depending on system size, equipment quality and the installer, and add-ons like battery storage change the figure substantially. Comparing the full installed quote across accredited installers is the only fair way to judge value.

What you'll pay: solar panels price bands

Tier	Typical price	What you're getting
Small system (around 3kW)	Roughly £5,000 - £8,000 installed	Suits smaller homes or modest roofs. Fewer panels but install costs like scaffolding still apply.
Mid-size system (around 4-5kW)	Roughly £7,000 - £11,000 installed	A common choice for typical family homes; the volume sweet spot for many installers.
Larger system (6kW+)	Roughly £10,000 - £15,000+ installed	More panels for higher-consumption homes; per-kW cost can fall as system size rises.
Battery storage add-on	Roughly £2,000 - £6,000+	Stores generated power for later use; a significant extra on top of the panel system.

Which retailers to compare - and why

• National installers: Scale and standardised packages; convenient but not always the cheapest - worth benchmarking against local firms.
• Local MCS-certified installers: Often more competitive on price and able to tailor the system; certification matters for warranties and any incentive schemes.
• Energy suppliers (e.g. EDF, Octopus): Bundled solar-and-battery offers, sometimes with finance; compare the all-in cost against independent quotes.
• Comparison and quote services: Gather multiple installer quotes for the same home, making the whole-system comparison far easier.
• DIY / supply-only retailers: Cheapest on equipment alone, but you lose certified installation, which most homeowners need for warranties and safety.

Compare the whole installed quote, not the panel price

A solar quote bundles several things: the panels themselves, the inverter, mounting hardware, scaffolding, electrical work and labour, plus any battery storage. Two quotes with the same number of panels can differ by thousands depending on the inverter quality, panel efficiency and the installer's pricing. The figure that matters is the total installed cost for a defined system size.

Get like-for-like quotes by specifying the same system size in kW and asking each installer to itemise equipment, scaffolding and labour. Cheaper headline panels can hide a weaker inverter or thinner warranty, so compare the whole package rather than any single line.

What moves the price - and where homeowners overpay

System size is the biggest driver, but roof complexity, scaffolding needs, panel and inverter quality, and whether you add battery storage all shift the figure. Larger systems often cost less per kW, while batteries add a substantial sum that may or may not pay back depending on your usage. VAT treatment on residential solar can also affect the bottom line, so check how each quote handles it.

Homeowners most often overpay by accepting a single quote. Getting several quotes for the same system from MCS-certified installers, and weighing equipment and warranties rather than just price, is the surest way to value. Comparing quotes side by side - a tool like FindPrices can help line them up - tends to reveal a wide spread for the same job.

Frequently asked questions

How much do solar panels cost to install in the UK?

A typical home system runs from roughly £5,000 for a small setup to £15,000 or more for a large system with battery storage. The exact figure depends on system size, equipment quality, roof complexity and the installer, so get several quotes.

Why do solar quotes vary so much for the same house?

Quotes bundle panels, inverter, mounting, scaffolding and labour, and installers price equipment and work differently. Two quotes for the same panel count can differ by thousands, which is why comparing the whole installed system matters more than the panel price.

Should I add battery storage?

A battery lets you store generated power for later, but it adds a substantial cost and the payback depends on your electricity use and tariff. Whether it is worthwhile varies by household, so weigh the extra cost against your expected savings rather than treating it as essential.

Are cheaper solar panels worth it?

Not always - a low headline price can hide a weaker inverter, lower-efficiency panels or a shorter warranty. Compare the full system, equipment quality and warranties across MCS-certified installers rather than choosing on price alone.

How can I get the best solar panel price?

Get multiple quotes for the same system size from MCS-certified installers, ask each to itemise equipment and labour, and compare the all-in installed cost. This is general guidance rather than personalised advice - the right choice depends on your home and finances.