Yes, energy is a Scrabble word!

Noun

1. (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs

2. Forceful exertion

3. Enterprising or ambitious drive

4. An imaginative lively style (especially style of writing)

5. A healthy capacity for vigorous activity

6. Any source of usable power

7. The federal department responsible for maintaining a national energy policy of the United States; created in 1977