•Renewable energy resources are

the sources that can

be replaced / generated at the same

rate that they are being utilised.

• Biomass is organic material made from plants and animals.

• Some examples of biomass fuels are wood, crops, manure, and some waste.

• When burned, the chemical energy in biomass is released as heat.

• Biomass can be converted into other usable forms of energy like methane gas or transportation fuels like ethanol.

• Largest source of electricity from renewable sources.

• Needs guaranteed supply of water.

• Kinetic energy of water rotates turbines which generate electricity.

• geothermal energy is heat from within the earth.

• We can use the steam and hot water produced inside the earth to heat buildings or generate electricity.

• Each wind turbine can produce between 1/4 and 2 MW of electrical power.

• Wind farm needs to be located where there is high wind speed.

• Solar energy is the sun’s rays (solar radiation) that reach the earth.

• Solar energy can be converted into electricity in two ways:

• Photovoltaic (PV devices) or “solar cells” – change sunlight directly into electricity.

• Solar Power Plants -  indirectly generate electricity when the heat from solar thermal collectors is used to heat a fluid which produces steam that is used to power generator.

• There are no waste products, and do not pollute the water or the air.

• The amount of sunlight that arrives at the earth's surface is not constant.

• large surface area is required to collect the energy at a useful rate.

• Require a lot of investments ; more expensive than oil and gas.

• Oman has a good opportunity to use solar energy because it has a large sun shine.

• More research should be done to reduce the cost of renewable energy uses.

• Householders have to use solar energy to reduce the electricity ills at homes.

www.offshorewindfarms.co.ukwww.britishwindenergy.co.uk

www.energy-efficiency.gov.ukwww.guardian.co.uk/renewables