| Answer | Crossword Clue |
|---|---|
| KILOWATTHOUR | Unit of energy (not power or time) |
| watthour | a unit of work or energy equivalent to the power of one watt operating for one hour |
| nonfuel | a type of energy not used for generating heat, power, or electricity |
| renewables | A source of energy that is not depleted by use, such as water, wind, or solar power |
| ELECTRONVOLT | Unit of energy (not potential) |
| LIGHTYEAR | Unit of distance (not time) |
