||What are the advantages?
||What are the disadvantages?
||Electricity and hot water are generated via solar cells.
||Large amounts of energy available from solar farms. Contributes to heating water and is relatively inexpensive to set up.
||Solar cells are expensive. Demand in winter when heat from the sun is at its lowest.
||Wind power turns turbines.
||Low cost power after initial set up.
||Contributes small amount to total energy needs. Can be unsightly. Set up costs are very high.
||Turbine blades are reversible and can harness the tide in both directions.
||Has the potential for large scale energy production and is available throughout the day on a regular basis and does not pollute.
||Very high set up costs. Could cause flooding of estuary borders, which may damage wildlife and natural habitat.
||The fall of water (from rivers, streams or lakes) - turns turbines and generates hydroelectric power.
||Clean quick and efficient at peak times.
||Contributes only a small amount to the needs of manufacturing. High set up costs. Suitable sites can be in remote areas.
||Holes in the earth’s crust produce steam to generate electricity.
||Provides power and hot water.
||On a large scale, it is only effective in countries such as Iceland where the crust is thin.
||Wood, plant matter and waste is burnt and generates heat.
||Low cost power is produced.
||Potential for deforestation – and transportation of timber to biomass sites. Environmental pollution.