Collection: Battery Storage for Existing Solar
Add Battery Storage to Your Existing Solar Panels
Already have solar panels but exporting surplus energy back to the grid for very little return? It's time to take back control. Adding a home battery storage system to your existing solar installation means you can store the energy you generate and use it when you need it most — in the evenings, overnight or during a power cut.
Scottish Energy Saving specialises in retrofitting battery storage to existing solar PV systems across Scotland. We work with leading brands including Fox ESS, Sigenergy and EcoFlow to find the perfect battery for your system.
Why Add Battery Storage to Existing Solar?
- Stop wasting surplus solar energy — store it instead of exporting it
- Use your own power in the evenings — reduce grid electricity use significantly
- Maximise your solar investment — get far more value from your existing panels
- Backup power capability — keep essentials running during outages
- Smart tariff charging — charge from the grid during cheap off-peak periods
- Real-time monitoring — track your energy generation and usage
- Increase energy independence — rely less on the National Grid
Is My Existing Solar System Compatible?
Most solar PV systems installed in the last 10+ years are compatible with modern battery storage. Our energy advisers will assess your existing system during a free home energy survey and recommend the most suitable battery solution.
Which Battery Is Right for Me?
We offer a range of battery capacities and brands to suit different solar system sizes and household energy needs. Whether you need a compact 5kWh system or a larger 16kWh+ installation, we'll find the right fit for your home.
Why Choose Scottish Energy Saving?
- Specialists in battery retrofit for existing solar systems
- MCS-accredited installation team
- Multiple battery brands available — Fox ESS, Sigenergy, EcoFlow
- Full system assessment, installation and aftercare
- Flexible finance options available
- Free home energy survey — no obligation
Frequently Asked Questions
Will a battery work with my existing inverter?
It depends on your current inverter. Some systems require a hybrid inverter upgrade, while others are compatible as-is. We'll assess this during your free survey.
How much could I save by adding a battery?
Homeowners with existing solar who add battery storage typically see a significant increase in self-consumption — often reducing grid electricity use by 70–90%.
How long does installation take?
Most battery retrofit installations are completed in a single day by our experienced team.
📞 Book Your FREE Home Energy Survey
Find out which battery storage system is compatible with your existing solar panels and how much more you could save. Our advisers will assess your system and provide a no-obligation recommendation.
Book Your FREE Home Energy Survey | Request a Personalised Quote | Speak to an Energy Adviser