Will my solar panels work in a power cut?

Generally speaking, no. This is to protect anyone repairing the line from electricity coming from your panels.

Solar PV systems are not really designed to be back up power systems. This is because the generation is intermittent. Even if you had a battery, it may not be full at the time of the power cut, and the electricity held within it might not last very long.

That said, certain systems can be adapted to work in a power cut. If this is something that is of particular interest to you, make sure you discuss this with your installers at the outset.