| Answer | Crossword Clue |
|---|---|
| FOSSILFUEL | Coal or natural gas |
| RESOURCE | Coal or natural gas, e.g. |
| FUELS | Coal and natural gas |
| RESOURCES | Coal and natural gas |
| FUEL | Coal or gas |
| FUEL | Coal or gas. |
| FUEL | Gas or coal |
| FUELER | Supplier of gas or coal. |
| ENERGY | Coal, gas or wind can supply it |
