MrBadger
Badger out
3.6 (per phase I think) kW is the max export you can do and the only requirement is to notifying the DNO after the fact.
The conversation that I had with my DNO last year was that the limit of 16A (nominal approx 3.6kW) per phase for retrospective approval includes all micro generation sources, including solar and battery. So if you have solar and want to install another form of micro generation such as battery storage even if no plans to export from storage you still need to get approval prior to installation. If your one and only install is 16A or less and your new install is 16A or less, then you can go a fast track route, but you still need prior approval from the DNO to show that its compliant and notify them when commissioned. I got the impression that even if there was no intention to export from battery, ie battery storage prevented export, then the DNO would still grant an export limit for the storage - which may have a use if it was then decided to financially benefit from further grid export.