Across
- 4. from the sun a zero carbon source of energy
- 5. converts dc to ac
- 7. the best orientation for solar panels
Down
- 1. we use these to generate electricity from water and wind
- 2. surplus electricity can be exported to the grid
- 3. the use of moving water to generate electricity
- 4. the engine associated with CHP
- 6. used to capture the suns energy
- 8. used to return water to its original watercourse