Measure of power and income a non-drinker accepted (7)
I believe the answer is:
wattage
'measure of power' is the definition.
'income a non-drinker accepted' is the wordplay.
'income' becomes 'wage' (I've seen this before).
'non drinker' becomes 'tt' (Teetotaller abbreviation).
'accepted' indicates putting letters inside.
'a'+'tt'='att'
'wage' going around 'att' is 'WATTAGE'.
'and' acts as a link.
(Other definitions for wattage that I've seen before include "Amount of electrical power" , "Light bulb power rating" , "Electrical power rating" .)