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Evaluate two sources of renewable energy which could be used for energy production

Evaluate two sources of renewable energy which could be used for energy production

Answers

queen
Biomass:
• Competition with crops for land resource.
• Plant/animal waste used as energy source.
• Reference to anaerobic digestion.
• Oil production from rape seed/can be used as a fuel in diesel engines.
• Low environmental impact on wildlife/soils and area.
• Growing grass/willow or other appropriate crop.
• Cheap and readily available.
• If replaced, it can be a long term, sustainable solution.
• Grants available for growing willow.
• When burned it gives off atmospheric pollutants, including greenhouse
gases.
• Only renewable if crops are replanted.
• No/limited income while crops are re-growing.
• Wide range of suitable locations.
• Reference to efficiency.
Tidal:
• Main sea lough that could be used is Lough Foyle/Strangford Lough.
• Problems with impact on wildlife.
• Ideal for islands.
• Potential to generate a lot of energy.
• Tidal barrage can double as a bridge and help prevent flooding.
• In future underwater turbines may be possible out to sea, and without
dams.
• Construction of barrage is costly/maintenance of barrage is costly.
• Only a few estuaries are suitable.
• May reduce tidal flow and impede flow of sewage out to sea.
• Correct reference to efficiency.
Sun:
• Solar panels/solar farm.
• Photovoltaic (PV) panels. Alternative valid response.
• Grants available.
• Efficiency varies/dependant on facing direction of building/time of day.
• Expensive to set up.
• Low environmental impact.
Wind:
• Turbines/wind farm.
• Expensive to set up/maintenance cost.
• Grants available.
• Public objection/visual impact/sound pollution.
• Can kill birds.
• Turbines can be found singularly or together in wind farms.
• Accept positive comments on environmental impact.
• Efficiency dependant on location/wind speed/reliability.
queen babito answered the question on July 10, 2018 at 13:31

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