Are solar panels worth it? This is one of the most common questions UK homeowners ask when considering renewable energy. To help you decide, we spoke with Carl Hogg, managing director for services at Good Energy, who answers the top solar installation questions, from cost to planning permission.
How Much Do Solar Panels Cost in the UK?
Solar panel costs vary based on your property and energy needs. Hogg recommends budgeting between £6,000 and £14,000 for a complete solar array, which includes panels, inverters, and optional battery storage.
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The final price depends on the size of your roof, the system's capacity, and whether you add a battery. A professional installer will conduct a full survey and design a bespoke solution tailored to your household.
Do You Need Planning Permission for Solar Panels?
In most cases, solar panels are considered permitted development in the UK, meaning you don't need planning permission. However, exceptions apply for listed buildings, homes in conservation areas, or if panels protrude significantly from the roof.
Always check with your local planning authority before installation. Your solar installer can also guide you through any necessary permissions.
How Many Solar Panels Do You Need?
The number of panels depends on your home's size, energy consumption, and how many people live there. According to Hogg, 10 panels typically supply 30-50% of a household's electricity, giving you essentially free energy from the sun.
Adding a solar battery can increase that percentage significantly, allowing you to store excess energy for use at night or during cloudy days.
Solar Panels vs. Traditional Energy: A Cost Comparison
| Factor | Solar Panels | Traditional Grid |
|---|---|---|
| Upfront Cost | £6,000-£14,000 | £0 |
| Monthly Bills | Reduced by 30-50%+ | Full cost |
| Payback Period | 10-15 years | N/A |
| Environmental Impact | Low carbon | High carbon |
Key Takeaways Before Going Solar
- Solar panels can cut electricity bills by 30-50% or more with battery storage.
- Typical installation costs range from £6,000 to £14,000.
- Most homes don't need planning permission, but check local rules.
- A professional survey ensures your system is sized correctly.
- Excess energy can be sold back to the grid for extra savings.
FAQ
Are solar panels worth it in 2025?
Do I need planning permission for solar panels in the UK?
How long do solar panels last?
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