Danish perhaps storing energy in guiding light (6)
I believe the answer is:
beacon
'guiding light' is the definition.
(I've seen this in another clue)
'danish perhaps storing energy' is the wordplay.
'danish perhaps' becomes 'beon' (I can't explain this - if you can you should believe this answer much more).
'storing' is an insertion indicator.
'energy' becomes 'AC' (AC is an example).
'beon' enclosing 'ac' is 'BEACON'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for beacon that I've seen before include "make light of it" , "Shiner" , "Warning or guiding device" , "Signal-fire" , "Signal fire - lighthouse" .)