1. Renewable energy
What is it?
What are the sources of renewable energy?

2. Renewable energy is the energy that comes from resources which are abundant and will never run out

3. Renewable energy resources
Wind power
Advantages
Abundant supply
In strong wind areas produces large quantities of electricity
Zero pollution
Cost effective
Disadvantages
Initial cost of set up
Reliability/intermitting supply
Large land space needed
Aesthetic pollution

4. Solar Power
Energy produced from solar collectors(photovoltaic) catching solar or ultra violet rays
Advantages
Disadvantages
Infinite amount of sunlight
Free energy
No pollution
Photovoltaic cells make no noise
Low maintenance
Expensive to set up
Exposure to sunlight(climate)
Night time
Power ratio compared to fossil fuels

5. Hydrogen Power Advantages Disadvantages Readily available
No harmful emissions
Environmentally friendly
Fuel efficient
Expensive
Storage
Highly flammable
Existing infrastructure

6. Bio-fuel
Biofuels are energy sources made from living things, or the waste that living things produce
Advantages
Disadvantages
Cost benefit
Reduction of greenhouse gasses
Economic security
Reduces dependence on foreign oil
High cost of production
Monoculture
Use of fertilizers
Water use

7. Geothermal energy
Geothermal energy is the energy obtained from the earth(geo) from the hot rocks present inside the earth
Advantages
Disadvantages
Non polluting
Can be used directly
Do not occupy much space
Not weather dependant
Only a few sites
Most sites are far from cities
Always a danger of eruption or volcano
Initial cost

8. Hydro electric power Advantages Disadvantages
Reliability( can be switched on to suit demand)
Safe
No pollution
Water is not consumed in the process
Massive investment cost
Droughts
Limited reservoirs
Ecological footprint