Across
- 3. efficient, Things that use wind and solar power.
- 7. energy, Energy that can run out.
- 9. Organic matter used as fuel.
- 10. a dynamo, or similar machines for converting mechanical energy into electricity.
Down
- 1. A better chance.
- 2. No many places to build it.
- 4. Energy of flowing water.
- 5. energy, Energy that won't run out.
- 6. Free and produces no greenhouse gasses.
- 8. Not available during cloudy days.