### Clue: Energy tax demand for chauffeur (5)
### Answer: DRIVE 
 ### Explanation: Definition: Energy,tax,demand for chauffeur
  Triple defn:  1st: The energy a person has to push for things; and 2nd: As in "he drives his workers to the point of collapse" – I'm not totally sure about this one; and 3: An order,demand to a chaueffeur.