Hello all,

I'm due to get solar panels and a battery system fitted to my house.  I'd like to know: is it possible to then set it up so that I can run my house mains off only the battery and solar panels, if there is a power cut?

I've been informed that normally, the system would switch off in a power cut.  But that a certain type of switch can be installed?  If anyone can tell me:
1) Is this possible?
2) Rough cost?
3) Can I hire an electrician to make the change after the solar panels and batteries have been installed?

Many thanks!  Alex.