
1) Electric power
Found on
https://www.crosswordclues.com/clue/standby-power

Standby power, also called vampire power, vampire draw, phantom load, or leaking electricity (`phantom load` and `leaking electricity` are defined technical terms with other meanings, adopted for this different purpose), refers to the electric power consumed by electronic and electrical appliances while they are switched off (but are designed ...
Found on
http://en.wikipedia.org/wiki/Standby_power

A fully charged battery ready to take over supplying a load in case of emergency.
Found on
http://www.mpoweruk.com/glossary.htm

The electric power consumed by an appliance when it is not performing its primary function (i.e. microwave clocks or appliances turned off, yet able to be activated by remote control).
Found on
https://www.encyclo.co.uk/local/22829
No exact match found.