Peak electricity as producing animals (7)
I believe the answer is:
alpacas
'animals' is the definition.
The answer is an example.
'peak electricity as' is the wordplay.
'peak' becomes 'alp' (I've seen this in another clue).
'electricity' becomes 'AC' (AC is an example).
'alp'+'ac'+'as'='ALPACAS'
'producing' acts as a link.
(Other definitions for alpacas that I've seen before include "Llamas with long silky fleece" , "Sources of wool" .)