Single Glass vs Double Glass vs Bifacial Solar Panels: What’s Best for UK Homes in 2025?

Choosing the right solar panels for your home in the UK is about more than just price—it’s about performance, durability, and long-term value. With numerous options available on the market, it can be challenging to determine the best choice between single glass, double glass (also known as mono glass), and bifacial solar panels. This guide breaks down the real differences, so you can make the best decision for your property and your budget in 2025.

Single Glass vs Double Glass vs Bifacial Solar Panels: What’s Best for UK Homes in 2025?

What Are the Main Types of Solar Panels?

Single Glass Panels (Economy Choice)

• How they’re built: Solar cells are sandwiched between a glass front and a plastic (polymer) backsheet.

• Pros:

  • Most affordable option

  • Lightweight—suitable for roofs with limited weight tolerance

• Cons:

  • Less durable and more prone to moisture/weather damage

  • Typically come with a 12-year product warranty

  • Lower fire and impact resistance

Best for: Homeowners on a tight budget who want to get started with solar. Just be aware of the trade-off in longevity and protection.

Double Glass (Mono Glass) Panels (Built to Last)

• How they’re built: Solar cells are sealed between two layers of toughened glass (front and back).

• Pros:

  • Superior durability—better resistance to the UK’s wet weather

  • Improved fire safety and lower risk of microcracks

  • Usually comes with a 25-year product warranty

• Cons:

  • Slightly heavier than a single glass

  • Higher upfront cost, but pays off over time

Best for: UK homeowners looking for a long-term investment and minimal maintenance. These panels are ideal for individuals seeking peace of mind and maximum reliability.

Bifacial Panels (Maximum Output for Modern Homes)

• How they’re built: Like double glass, but the solar cells can absorb light from both the front and the back.

• How they work:

  • The front collects direct sunlight

  • Back captures reflected light (from roofs, gravel, or even snow)

• Pros:

  • Generate 5–30% more electricity per year (depending on installation)

  • Same robust build and long warranty as double glass panels

  • Lower cost per kWh over the panel’s lifetime

• Cons:

  • Highest upfront cost

  • Extra output depends on installation angle and surface reflectivity (works best over bright or reflective surfaces)

Best for: Homeowners who want to maximise their energy generation, especially in properties with flat, light-coloured roofs or open ground installations.

Bifacial Panels With Cells on the back as well as the front maximise solar generation. They will cost more will generate more, bringing quicker payback

Which Solar Panel Is Best for UK Homes in 2025?

• Lowest price: Single glass panels offer an entry-level solution, but expect a shorter lifespan and less protection.

• Long-term value: Double glass (mono glass) panels balance cost, durability, and warranty—ideal for most UK properties.

• Maximum performance: Bifacial panels are the top choice if you want the highest possible output and your site is suitable for them.

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Why the Right Solar Panel Matters for Your Home

Not all solar panels are created equal. Cheaper quotes often use single glass panels, which may look appealing but could cost more in the long run due to reduced lifespan and performance. Always check the panel type, warranty, and expected output, not just the price.

At Quantum Renewables, we recommend high-quality double glass and bifacial panels for most UK homes, ensuring you get the best return on your investment and peace of mind for years to come.

Got questions about which solar panel is right for your UK home in 2025? Contact Quantum Renewables for honest, expert advice—no jargon, no pressure.