ProsCons
SolarGreen energyUpfront cost, maintenance
WindGreenHigh potential – 20 timesLow operational costUpfront costThreat to wildlife (turbine)Fluctuating nature
HydroReliable – not fluctuatingCan control the flowAvailability of waterUpfront cost
Geo thermalVirtually limitless supplySmallest land foot printNo fluctuationsPrime sites far from population centersSulphur dioxide and silica are emitted