Find out the estimated cost of installing solar panels on your home.
Solar panel production
The amount of solar power produced will depend on a number of factors:
- Size of the system
- Installation location (e.g. the angle and direction of the panels)
- Shading from trees, chimneys etc.
- Weather
| System Size | Annual Production | Annual Savings @ 35p p/kWh |
|---|---|---|
| 1.25 kWp | 1,062 kWh | £371 |
| 2.5 kWp | 2,125 kWh | £744 |
| 5 kWp | 4,250 kWh | £1,488 |
| 10 kWp | 8,500 kWh | £2,975 |
The estimates above provide a rough idea of the solar production you could expect, however actual results could vary significantly depending on the specific installation and other factors.
The annual savings are based on a solar panel only system, however you may need to consider a battery storage system to take advantage of the full output unless you’re likely to use all of the power produced during the day.
Adding a battery storage system will also offer additional savings if you are on a time of use tariff.
Finding an Installer
If you know anyone who has already had a system, it’s worth asking for recommendations. It’s important to check:
- The solar installer should be MCS accredited.
- Ask to see the model number and specifications of the equipment, so you know exactly what you’re paying for.
- Look for reviews on established sites like Trustpilot.
Solar Panels with Battery Storage
Adding a battery to your solar PV system provides a number of benefits:
- Store excess solar power for use at night or during cloudy periods.
- Backup power in the event of a power cut (only available with some systems).
- Import power when electricity is cheap for use during peak hours.
Battery storage systems will increase your savings as you can generally use more of the power you produce. Without a battery storage system, excess solar will be exported to the grid at much lower rates than you’ll pay if you need to import electricity later.
You’ll also benefit from 0% VAT if you have battery storage and solar panels fitted at the same time.
Frequently Asked Questions
How much does it cost to install solar panels?
The cost of installing a solar PV system at your property will be affected by:
- The size of the system required
- Roof space and access
- The layout of your property
You would need to get a survey to determine the specific requirements and get an accurate quote for your property.
How much will I save with solar panels?
The amount you’ll save will depend on the size of the system installed. You can increase the savings you make by timing your electricity use where possible to make the most of the electricity generated by your panels, for example:
- Running appliances during bright sunny days where solar production is higher
- Switching to a time of use tariff, meaning you’ll benefit from cheap electricity prices at night while the sun is down.
- Installing a battery system to store excess solar power for use at night or when solar production is lower.
Do I need a South facing roof for solar panels?
Solar panels work best on a South facing roof, however they can also be placed on East and West facing roof spaces.
If you have lots of outside space, they could also be ground mounted or placed on a garage or outbuilding.
Can I have solar panels on my roof?
Providing that you have roof space that’s not shaded and in a good state of repair, you’ll generally be able to get solar panels fitted.
Any repair work should be done before as this will be much more difficult once the panels are installed. It’s important to get a structural survey to ensure that the roof can safely support the extra weight of the panels.