Engineer electing to save energy, having a certain appeal (9)
I believe the answer is:
telegenic
'having a certain appeal' is the definition.
I can't tell whether this defines the answer.
'engineer electing to save energy' is the wordplay.
'engineer' indicates anagramming the letters.
'to save' indicates putting letters inside.
'energy' becomes 'e' (physics symbol as in E=mc2).
'electing' anagrammed gives 'telegnic'.
'telegnic' going around 'e' is 'TELEGENIC'.
Can you help me to learn more?
(Other definitions for telegenic that I've seen before include "Nice to watch" , "appealing to viewers" , "Coming over on the tube" , "having broadcast appeal" , "attractive on screen" .)