An AC-coupled proposal adds storage alongside the working solar inverter.
THE OXFORDSHIRE FIELD GUIDE / HOME BATTERIES
Home battery installers in Oxfordshire
Already have solar in Oxfordshire? Photograph the inverter label first. It may determine which battery connection options are practical.

START WITH THE PROPERTY
Start at the existing electrical system
An Oxfordshire home with older solar may have an inverter and monitoring setup worth preserving. Photograph its label and the consumer unit, then ask whether the proposed storage needs a separate inverter or can integrate with what is there.
BEFORE YOU ACCEPT A QUOTE
Price the connection route
Look beyond the battery cabinet: protection, cable runs, meter changes and commissioning can alter the real installed cost. Ask for a diagram showing what remains from the current solar installation and what will be replaced.
ILLUSTRATIVE QUOTE COMPARISON
Keep the existing inverter or replace it?
A hybrid proposal removes that inverter and combines solar and battery control.
Compare the installed cost, monitoring, warranties and future service responsibilities. A marginal efficiency gain is not a complete case for replacing working equipment.
ANOTHER PROJECT AT THE SAME ADDRESS?
Explore the other options in Oxfordshire.
NEXT STEP IN OXFORDSHIRE
Decide whether outages matter.
If backup is important, identify the lights, sockets or appliances you would want to keep running. That requires a specific circuit plan and equipment, not just extra battery capacity.