This document discusses various alternative energy resources including solar power, wind power, hydroelectric power, tidal power, biomass energy, and geothermal energy. It outlines the benefits and drawbacks of each resource. For example, it states that solar power has no greenhouse gases or pollution but high initial costs, while hydropower provides electricity and mechanical power without emissions but can damage the environment through flooding. The conclusion emphasizes that India relies on hydro and wind energy.

5. Solar Power

7. Hydropower Electric Mechanical

8. Tidal Power

9. Biomass Energy

10. Geothermal Energy

15. Large-scale Solar Electric Site

20. How hydropower works

25. Ethanol production: not environmentally benign