Electricity needs when the grids down.

[Skean Dhude]

kellys_eye, Cold Water fish don't have that much of a power requirement. Marine Fish die quickly without heat or air.

BP, They ask about that for two reasons.
1 If there is a power problem that impacts your residence they can prioritise its resolution.
2 When the power grid comes overloaded and they start restricting power to your homes by the smart meters yours will stay on.