Types of Solar Panels Explained: A UK Guide (2026)

Updated: June 2026 • Energy Solutions NW

This guide explains solar panel types — monocrystalline, polycrystalline and thin-film — covering efficiency, cost and the best choice for NW homes.

The type you choose affects how much power you get from your roof space. Here’s how the options compare.

Panel choice also feeds into overall price — see our solar panel cost guide for the bigger picture.

What Types of Solar Panels Are There?

For home installations, there are three main types you’ll come across:

• • Monocrystalline: the most common and most efficient choice for UK homes.
  • Polycrystalline: a lower-cost option, slightly less efficient.
  • Thin-film: lightweight and flexible, but needs more space for the same output.

Monocrystalline Panels

Made from a single, pure silicon crystal, these are the panels you’ll see on most UK homes. They’re recognisable by their uniform black appearance.

Their main strength is efficiency: they produce more power per panel, so you get more from limited roof space. They typically cost a little more than polycrystalline.

Polycrystalline Panels

Made from multiple silicon fragments melted together, these have a flecked blue appearance and usually cost less to produce.

They’re slightly less efficient than monocrystalline, so you may need a little more roof space for the same output. They’ve become less common as monocrystalline prices have fallen.

Thin-Film Panels

Thin-film panels are lightweight and flexible, made by layering photovoltaic material onto a backing.

They’re less efficient per square metre, so they need more space — which is why they’re more common on large commercial roofs or unusual surfaces than on typical homes.

Which Type Is Best for UK Homes?

For most UK homes, monocrystalline panels are the usual choice. Their higher efficiency means more power from the roof space you have — which matters on smaller British roofs.

The right panel still depends on your roof, budget and goals. A survey matches the panel to your property rather than a one-size-fits-all approach.

Panel Efficiency and Wattage

Efficiency is how much sunlight a panel converts into electricity. Higher efficiency means more output from the same area.

Wattage (e.g. 400W) is the panel’s peak output under test conditions, not what it makes all day. Both numbers feed into how many panels you need.

Why Choose a Professional Installer?

• • Right panel match: we recommend panels suited to your roof and budget.
  • Quality components: reputable panels and inverters, properly specified.
  • MCS certification: required to access the Smart Export Guarantee for exported electricity.
  • Proper design: efficiency and layout planned around your space.

What Happens When You Request a Quote?

1. 1. Submit the form: tell us about your property and energy use.
   2. We review: our team looks at your roof and requirements.
   3. Free consultation: we discuss panel options with no obligation.
   4. Tailored quote: you receive a plan designed around your specific needs.

Related Guides

• • Are Solar Panels Worth It in the UK?
  • How Much Do Solar Panels Cost in the UK?
  • How Many Solar Panels Do I Need?
  • Solar Panels on Different Roof Types

Frequently Asked Questions

What is the most common type of solar panel for homes?

Monocrystalline panels are the most common choice for UK homes. Their higher efficiency means more power from limited roof space, which suits typical British roofs.

What’s the difference between monocrystalline and polycrystalline?

Monocrystalline panels are made from a single silicon crystal and are more efficient. Polycrystalline panels use multiple fragments, cost a little less, and are slightly less efficient.

Are thin-film solar panels good for homes?

Thin-film panels are less efficient per square metre, so they need more space. They’re more common on large commercial roofs or unusual surfaces than on typical UK homes.

Last updated: June 2026