Planned Electricity Maintainance

Its almost time for my last incubation of the year, as I shall be returning to uni shortly. I have people intrested in homing my little chicks and I am looking to get some chocolate orpington eggs (I have sourced some )

BUT!! News came through today of a Planned Electricity turn off for maintainence...on what will be day 8 - 15 of the hatch (Depending on when the other little beggers decide to get a move on and hatch)

The electricity will be off between approximatly 8.30 to 16.30. Obviously my incy is electronic so therefore will be turned off. What can I do . We are not allowed to use Generators. The only thing I can think of doing is moving my eggs to a friends incubator for the day, but I am not sure if they are going to be using it

Has anyone else ever had this problem

Can you beg, borrow or buy an inverter? The power for an incubator is low (if in a warm place to begin with) so a car battery plus inverter should see you through. Alternatively heat to about 40C a number of bricks in the oven and when the power goes off put them near the incubator and cover all with a duvet.