Your solar guide

Everything you need to know about solar panels

From how solar panels work to what grants you can claim — and how Home Solar Direct makes finding a trusted local installer effortless.

£800+
Average annual energy bill saving
25yr
Typical solar panel lifespan
3–4t
CO₂ saved per year per home
7–9yr
Typical payback period

How do solar panels work?

Solar panels, also called photovoltaic (PV) panels, convert sunlight into electricity using semiconductor cells — typically made from silicon. When light hits these cells, it knocks electrons loose, generating a flow of direct current (DC) electricity.

An inverter converts this DC electricity into alternating current (AC), which is what your home appliances use. Any electricity you don't use is either stored in a battery or exported back to the National Grid — and you can be paid for that surplus through the Smart Export Guarantee (SEG).

A typical home solar system includes
  • Solar panels (6–14 for a typical home)
  • An inverter to convert DC to AC power
  • A generation meter to track output
  • Optional: battery storage for overnight use
  • Optional: EV charging integration
☀️ Do they work in cloudy weather?

Yes. Solar panels generate electricity from daylight, not direct sunshine. Even on an overcast UK day, your panels are producing power. Output is naturally higher in summer, but modern panels are efficient year-round — the UK gets enough solar resource to make the investment worthwhile in virtually every region.

What do solar panels cost in the UK?

The cost of a solar installation depends on your roof size, energy usage, and whether you add battery storage. Prices have fallen significantly over the past decade and continue to drop as the technology matures.

Typical installation costs (2024–25)
  • Small system (3–4kWp): £5,000 – £6,500
  • Medium system (4–6kWp): £6,500 – £8,500
  • Large system (6–10kWp): £8,500 – £12,000
  • Battery storage: add £2,000 – £4,000
What you could save each year
  • £400 – £600 on electricity bills
  • £80 – £200 from SEG export payments
  • Up to £1,000+ with battery storage added
  • Increase your home's value by up to 4%

What help is available from the government?

The UK government offers several schemes to make solar more affordable, and your local installer can confirm which you qualify for as part of your free quote.

ECO4 Scheme
  • Free or heavily subsidised installation
  • For low-income or fuel-poor households
  • Covers solar, insulation, and heat pumps
  • Funded by energy suppliers — no government form required
  • Ask your installer if you qualify
Smart Export Guarantee (SEG)
  • Earn money for surplus electricity you export
  • Payments made by your energy supplier
  • Rates vary by supplier — shop around
  • Only available with MCS-certified installations
  • No cap on how much you can earn

Frequently asked questions

South-facing roofs at a 30–40° pitch generate the most energy, but east and west-facing roofs can still produce 80–90% of a south-facing system's output. North-facing roofs are generally not suitable. Your installer will assess your roof as part of the free survey — there's no obligation to proceed if it isn't viable.
In most cases, no. Solar panels on domestic properties are covered by permitted development rights in England, Scotland, and Wales, meaning no planning application is required. Exceptions include listed buildings, properties in conservation areas, and some flat-roof installations. Your installer will advise if any permission is needed.
MCS (Microgeneration Certification Scheme) is the UK government-backed quality standard for renewable energy installations. Only MCS-certified installers can issue the certificate needed to claim Smart Export Guarantee payments and access certain grant schemes. All installers on Home Solar Direct are MCS-accredited.
Most residential solar installations are completed in one to two days. A pre-installation survey is usually arranged first to assess your roof, wiring, and meter. From agreeing to proceed to panels generating power typically takes two to six weeks, depending on installer availability and any DNO notification requirements.
Battery storage lets you use solar electricity generated during the day at night or during cloudy periods, increasing self-consumption from around 30–40% to 60–80%. It adds cost upfront but improves your savings significantly, especially with higher electricity prices. Your installer can model the payback period for your specific usage pattern.
Solar panels are typically installed by homeowners, as landlord permission and in some cases structural surveys are required. However, if you rent and are on a low income, you may still qualify for the ECO4 scheme — which your landlord can apply for. Speak to our advisor and we can point you in the right direction.

Why Home Solar Direct?

We built Home Solar Direct because finding a trustworthy local solar installer is harder than it should be. Comparison sites sell your data to dozens of companies at once. Cold-call firms push unsuitable products. Finding someone local and credible takes real effort.

Home Solar Direct is different. Our AI advisor genuinely understands solar and helps you find the right answer — not just the nearest salesperson. And when you're ready, we connect you with one vetted, MCS-accredited installer in your area, not twenty.

  • MCS-accredited installers only — no exceptions
  • One connection, not a data free-for-all
  • AI advice available 24/7, no waiting
  • Free to use for homeowners, always
🔒 Quality first
Every installer in our network holds MCS accreditation — the government's own quality benchmark for solar installations in the UK.
📍 Genuinely local
We match by postcode, connecting you with an installer who actually operates in your area — not a national firm subcontracting to whoever's available.
💬 Advice before sales
Our AI advisor is there to help you make the right decision — even if that means telling you solar isn't right for your property right now.

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