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Renewable energy - Coggle Diagram
Renewable energy
Wind power
Site requirements
High and stable wind speeds
Limitations
Low reliability (affected by weather)
High building cost( wind turbines and offshore wind farms)
Threat to wildlife (blades kill birds and bats)
Noise pollution (turning of the blades are noisy)
UK
UK is very windy
Government provided subsidies for wind power industry
Lower costs
Hydroelectric power
Site requirements
Deep river valley
For great height
Limitations
High building cost
Expensive to build and relocate people
Affected by drought
Energy generation is reduced during drought and dry seasons
Destroy biodiversity
Risk of collapse (flooding)
China
No fossil fuels
Rapid population growth
Rapid economic development
Dense river network
Biofuels
From crop
Sugar from crops
Ethanol
Oil
Biodiesel
Organic waste
Biogas
Site requirements
Suitable climate for crops
Large area
Limitations
Reduce food supply (food prices go up)
Cause deforestation (natural and is cleared)
Reduce biodiversity
Intensify global warming
High production costs (expensive to grow and refine biofuels )
Fluctuating supply and price
Much energy to produce
Solar energy
Site requirements
Desert areas are ideal
Limitations
Take up large areas( loss of wildlife habitat)
High building cost
Low reliability ( sunlight varies at times)
Pollution(toxic metals)
Advantage
Infinite
Low carbon emissions