Renewable energy source
Hydroelectric Energy
Tidal Energy
Wave Energy
Geothermal Energy
ADVANTAGE:
DISADVANTAGE:
ADVANTAGE:
DISADVANTAGE:
DISADVANTAGE:
DISADVANTAGE:
ADVANTAGE:
ADVANTAGE:
Each turbine only produces small amount of electricity + it does not work in calm waters.
Clean + renewable
Reservoirs take up large amounts of space + destroy countryside. Only work in wet/hilly river valleys + they are expensive to build
Clean + renewable
Only works in some coastal areas. Tidal barriers could affects wildlife + expensive to build.
Clean + renewable
Only available in certain area where hot rocks lie close to surface of the earth + often in areas of natural beauty
Clean, cheap + renewable
Wind Energy
Solar Energy
ADVANTAGE:
DISADVANTAGE:
Clean + renewable
No electricity is produced at night or when there's little sunlight. Takes up a lot of space + expensive to install.
ADVANTAGE:
DISADVANTAGE:
Clean + renewable
Electricity only produced when there's wind. Turbines can be noisy + their looks can spoil countryside. Large numbers are needed to produce reasonable amount of electricity.