| Answer | Crossword Clue |
|---|---|
| NUCLEAR | Designating a form of energy. |
| SUL | Designating a certain acid: Comb. form. |
| HEAT | A form of energy. |
| ELEC | A form of energy: Abbr. |
| ELEC | Of a form of energy: Abbr. |
| HEAT | Form of energy. |
| ATOMIC | Form of energy. |
| HEAT | Form of energy |
| SOLAR | Form of energy |
| SOLAR | Alternate form of energy |
| ELEC | Form of energy: Abbr. |
| SPECTRO | Of radiant energy: Comb. form. |
