I would suspect pal is enthralled by rise in green energy (5,5)
I believe the answer is:
tidal power
'green energy' is the definition.
(type of renewable energy)
'i would suspect pal is enthralled by rise' is the wordplay.
'i would' becomes 'I'd'.
'suspect' indicates an anagram (a suspicious or unusual spelling).
'is enthralled by' indicates putting letters inside ('enthral' can mean 'capture').
'rise' becomes 'tower' (towering is a kind of rising).
'pal' anagrammed gives 'alp'.
'id'+'alp'='idalp'
'idalp' placed within 'tower' is 'TIDAL POWER'.
'in' is the link.
(Another definition for tidal power that I've seen is " Generation of electricity from sea movements".)