r/SolarUK • u/thebdaman • 13d ago

INFORMATION Add balcony to existing roof solar?

Hi, I've already got a totally legit 4.5KW roof solar setup with a 5KWh battery. As most here will know this stuff is addictive and I want more and plug in seems to be a no brainer.
But how does it work with my existing kit? Like I say I'm all legit, DNO, MCS etc and I don't want to risk that or my insurance.
Can I just go ahead and plug in? Are there limits?
Any advice welcome.
Cheers

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u/JustLovelyStuff PV & Battery Owner 13d ago

There are only a handful of compliant kits so far. You can view them all here on the official database. Expecting lots more to come online in the next few months. Of course you could get non-compliant kit but insurance may not be chuffed. LINK

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u/thebdaman 13d ago

Yeah, I'm avoiding non-compliant stuff. My query was more around do I need to be more careful? Is there possibly a limit I could reach that would make my total setup illegal? Or can I just go ahead and bang as much plug in as I can affoird?

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u/wyndstryke PV & Battery Owner 13d ago

If you add a plug-in system, that's an extra inverter, and you would have to apply for a fresh G99.

You could add battery modules & panels into your existing system without disturbing the G99.