1. Solar energy - through the use of solar panels and solar water heaters
2. Wind energy - through the use of wind turbines
3. Geothermal energy - through the use of geothermal heat pumps
4. Hydroelectric energy - through the use of small-scale hydropower generators
5. Biomass energy - using organic materials such as wood chips or compost to generate energy
6. Tidal energy - using tidal power turbines
7. Wave energy - using devices that harness the power of ocean waves
8. Biogas energy - using organic waste material to generate energy
9. Fuel cell technology - using hydrogen as a fuel source to generate electricity.
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