When you lose energy, expect blackouts with this (5,3)
I believe the answer is:
power cut
'when you lose energy expect blackouts with this' is the definition.
The definition suggests a singular noun which matches the answer.
'energy expect blackouts with this' is the wordplay.
I cannot really see how this works, but
'energy' could be 'power' (synonyms) and 'power' is found in the answer.
The remaining letters 'cut' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for power cut that I've seen before include "Loss of electricity" , "blackout" , "Go-getter's hairstyle" , "Interruption in electricity supply" , "turn-off?" .)