Related Clues:
- It can be conserved
- Part of an Einsteinian equation
- Coal, gas or wind can supply it
- It may be green
- Department created by Carter
- Anti-intellectual epithet
- Reaction release
- Vigour
- Physicist's field
- Couch potato's lack, evidently
- Something needed for work
- Steven Chu's cabinet department
- What some bars supply
- E for Einstein
- Power or vigour.