Prefer to talk? 03333 356780
Retrofit Battery Storage for Existing Solar PV, UK Homes
Turn daytime solar into evening power and stop buying expensive grid electricity at night.
If your panels export lots at midday and you still pay the grid in the evening, a retrofit battery can change the whole game. We will tell you honestly if it stacks up, or if it does not.
Quick survey, clear options, no nonsense. If your system is awkward to retrofit, we will say so.
Prefer to talk? 03333 356780
Retrofit Battery Storage for Existing Solar PV, UK Homes
Turn daytime solar into evening power and stop buying expensive grid electricity at night.
If your panels export lots at midday and you still pay the grid in the evening, a retrofit battery can change the whole game. We will tell you honestly if it stacks up, or if it does not.
Quick survey, clear options, no nonsense. If your system is awkward to retrofit, we will say so.
Why retrofit a battery to existing solar
Use more of your own solar
Store midday surplus and use it later. Less exporting cheap, less buying back expensive.
Cut evening import costs
The typical win is the evening, cooking, TV, lighting, baths, all powered from stored solar.
Make smart tariffs work harder
Charge off peak when it is cheap, discharge at peak when it is dear, even in winter.
Optional backup power
Not every system supports it, but if it matters, we can design a setup to keep essentials running.
This is ideal if you recognise any of these
You see high export midday, then you buy electricity at night.
You are out during the day and your solar gets wasted.
You have an EV and want cheaper home charging.
You have, or plan, a heat pump and want to smooth evening demand.
You want more control and less exposure to rising unit rates.
You have export limitation and want to keep more generation on site.
How it works?
Review: your inverter model, solar size, usage pattern, goals.
Survey: placement, cable routes, consumer unit, protection, export limit checks.
Options: 2 to 3 clear choices, with honest pros and cons.
Install: tidy workmanship, labelled isolators, app setup, handover.
Set up for savings: we help configure schedules to suit your tariff.
What homeowners usually notice first
“Our evening usage is now mostly battery.”
Big difference from 5pm to bedtime.
“Less grid import, less stress.”
Bills feel calmer and more controllable.
Ready for a clear recommendation?
Send an enquiry and we will come back with the best fit approach for your system.
Tip: If you include your inverter model, we can confirm compatibility fast. Or call 03333 356780.
STILL NOT SURE?
Frequently Asked Questions
Can you add a battery to any existing solar PV system?
Most of the time, yes. The method depends on your inverter and how your system is wired. Some homes suit an AC coupled battery, others suit a hybrid inverter upgrade.
Will it work with my inverter?
Usually, yes, but not always the way you expect. Give us the make and model and we will confirm the cleanest route.
What size battery do I need?
The right size depends on your evening usage, how much you export, your tariff, and whether you want backup power. Bigger is not always better, oversized batteries can take longer to pay back.
Does a battery give backup power in a blackout?
Only if the system is designed for backup. Many solar systems shut down during outages for safety. If backup matters, tell us on the form and we will design around it properly.
How long does a retrofit take?
Many installs can be done in a day, but it depends on access, consumer unit changes, and whether an inverter upgrade is needed.
Where does the battery go?
Common spots are garages, utility rooms, or external rated enclosures. The best location is cool, accessible, and safe for cabling and protection.
Will I still export and get paid for it?
You can still export, but you often export less because you store more. Some people aim for maximum self-use, others balance self-use and export.
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