Advantages of using geothermal
No pollution or greenhouse gases
Not dependent on weather
Disadvantages of geothermal
Fixed site
Brings up hazardous minerals
Advantages of using cal-fired power stations
* coal available in many parts of the world
Disads of using coal-fired power stations
* results in atmospheric pollution
Advantages of hydroelectric power station
* no air pollution
Disads of hydroelectric power station
Villages / habitat destroyed
Not suitable if low annual rainfall