Play part storing renewable energy? (4,4)
I believe the answer is:
peer gynt
'play' is the definition.
(I've seen this before)
'part storing renewable energy?' is the wordplay.
'part' becomes 'pt' (I've seen this in other clues**).
'storing' is an insertion indicator.
'renewable' is an anagram indicator.
'energy' with letters rearranged gives 'eergyn'.
'pt' going around 'eergyn' is 'PEER GYNT'.
(Other definitions for peer gynt that I've seen before include "(Son of Ase in) Ibsen play" , "Solveig loved him (Ibsen)" , "Titled hero" , "Norse legend" , "Ibsen drama" .)