Energy Management

Coal ✘ Forests ✘ Water ✘ Wildlife ✔

Solar energy ✘ Biomass energy ✘ Hydro-power ✘ Geothermal energy ✔

Coal ✘ Fuel cells ✘ Wind power ✘ Wave power ✔

Highly polluting ✘ High waste disposal cost ✘ Unreliable supply ✘ High running cost ✔

Chemical energy ✘ Biogas ✘ Electricity ✘ Geothermal energy ✔

Nuclear reactor ✘ Wind mills ✘ Biogas reactor ✘ Solar cell ✔

Interference with spawing and migration of fish ✘ Pollution and health hazard in the estuary due to blockage of flow of polluted water into the sea ✘ Navigational hazard ✘ None of these ✔

Coal ✘ Biogas ✘ Hydrogen ✘ Natural gas ✔

Helium ✘ Nitrogen ✘ Hydrogen ✘ None of these ✔

Carbon cell ✘ Hydrogen battery ✘ Nuclear cell ✘ Chromium cell ✔