Charged to have dissembled about zero-emissions transport (6)
I believe the answer is:
levied
'charged' is the definition.
(levying is a kind of charging)
'dissembled about zero-emissions transport' is the wordplay.
'dissembled' becomes 'lied' (I've seen this in another clue).
'about' means one lot of letters goes inside another.
'zero emissions transport' becomes 'ev' (I can't explain this - if you can you should give a lot more credence to this answer).
'lied' enclosing 'ev' is 'LEVIED'.
'to have' is the link.
Can you help me to learn more?
(Other definitions for levied that I've seen before include "Imposed or collected, say contributions" , "Imposed or charged, say tax" , "Imposed or charged, like tax" .)