What You Need to Know
If you’re buying a house in the South East, there’s a good chance it already has some solar panels installed. With almost 1.6 million homes across the UK now generating their own renewable energy, solar panels are becoming a standard feature, particularly in areas embracing sustainable living.
At SolarTherm UK we’ve helped homeowners across Essex, Kent, Surrey and Sussex make the most of solar technology. Here’s a guide to everything you need to know when purchasing a home with solar panels.
Understand the Solar Panel System
Before you buy, it’s important to understand the existing solar setup. How many panels have been installed and what is the total capacity of the system? Knowing the size of the system will allow you to estimate your savings going forward and plan for the future. Does the system come with battery storage? If the system doesn’t come with battery storage it will be worthwhile to find out whether the system allows for retrofitting with a battery to increase savings further.
The most important thing to find out when purchasing a home with solar panels installed is whether the system is MCS certified, whether you have DNO approval for export and whether the system is registered for export. Knowing these details helps you plan energy use and identify any upgrades you may need in the future.
Check Ownership and Transfer Documents
Your solicitor can help with the paperwork to ensure the solar system is included in the sale. Verify the solar panels are listed in the fixtures and fittings, older systems may be registered with a “rent a roof” scheme where the system is not owned by the seller. Make sure a change of ownership form is completed to continue receiving any export payments that are already setup.
Review Feed in Tariff (FiT) or Smart Export Guarantee (SEG) Contracts
Solar panels may have existing contracts that pay for exported electricity:
- Feed in Tariff (FiT): closed to new applicants in 2019, but active contracts remain valid for 20-25 years. The previous owner must notify Ofgem that they no longer own the system so you can receive the remaining payments.
- Smart Export Guarantee (SEG): the current scheme that pays you for electricity you export. Rates vary by supplier, so shopping around can maximise returns.
Check the contract details to ensure a smooth transition and continued income from your solar energy.
Get to Know Your Solar System
Even if you’ve owned solar panels before, understanding a new system is key:
- Generation meter: learn to read it to monitor system performance
- Solar inverter: converts DC electricity from your panels into usable AC electricity. Knowing how it works helps you track efficiency and exports
- Documentation: make sure user manuals and installation records are handed over. Ask the previous owners about their experience
Check Warranties and Maintenance
Solar panels usually come with a 25 year performance warranty and a 5-10 year product warranty. Ask your solicitor or the installer for details, including when the panels were installed. Maintenance is critical for long term efficiency, so continue any existing plans or start a new one.
Confirm Home Insurance Covers Solar Panels
Solar panels should be covered under your home insurance. Review your policy to avoid gaps in coverage and speak to your insurer about adding protection if needed.
Have a Professional Solar Check
Even if a home survey has been done, a specialist solar inspection ensures the system is safe, installed correctly and compliant with standards. Look for MCS certified installers in the South East for professional system tests.
Maximise the Benefits of Your Solar Panels
To get the most from your solar system:
- Combine with battery storage: store excess electricity for later use
- Integrate with renewable technologies: heat pumps or EVs can further reduce bills
- Use smart tariffs: time of use tariffs can save you money by importing electricity during off peak hours
By understanding your system and exploring upgrades, you can enjoy lower energy bills and sustainable living in your new South East home.
SolarTherm UK has been installing solar panels and battery storage systems across Essex, Kent, Surrey and Sussex for over 15 years. If you’re buying a house with solar panels, our experts can help check, maintain and optimise your system for maximum efficiency. For honest, expert advice, contact SolarTherm UK today.
Your home. Your energy. Your future.
