Electricity supply (5)
I believe the answer is:
power
(Other definitions for power that I've seen before include "Strength, force" , "product" , "Ability to act or physical might" , "Ability (to do something)" , "index" .)
I believe the answer is:
power
(Other definitions for power that I've seen before include "Strength, force" , "product" , "Ability to act or physical might" , "Ability (to do something)" , "index" .)