Solar panel and battery on the outbuilding

[ragtime27]

Hello everyone,

I'm getting few quotes for PV and battery installed on the outbuilding roof instead of the main house.
The outbuilding is connected from the meter in the house via armoured cable going through the garden.
The outbuilding has its own consumer unit.
I'm trying to avoid the trenching to connect the panels and battery to the main house.
however, I'm getting conflicting quotes, one says you don't need trenching and other the opposite.
Bear in mind I want to export to the grid as well.
is it doable?
Many thanks

 

[binky]

Depends what size the existing cable is and the size of the array.

 

[michael8554]

"The outbuilding is connected from the meter in the house via armoured cable going through the garden."
Is that above ground ?
Clipped to walls and fences ?
If that was acceptable why not repeat ?

 

[ragtime27]

I'm afraid it is below ground
It is just panel installer giving me two different versions

 

[ragtime27]

Depends what size the existing cable is and the size of the array.

The cable is 25mm2 80A breaker