1. Sustainability
Solar Power
Sustainability
Solar power

2. Amount of Energy From the Sun
Average Light Energy Produced by the sun per square meter: 1700kWh

3. Solar power
Solar Power: The conversion of the energy in sunlight to electrical energy
2 Ways to convert the light energy to electrical:
Direct Photovoltaics (PV):
Concentrated Solar Power(CSP):

4. Solar power
Solar Power: The conversion of the energy in sunlight to electrical energy
2 Ways to convert the light energy to electrical:
Direct Photovoltaics (PV): Using materials that, when exposed to light, create an electric current
Concentrated Solar Power(CSP): Uses lenses and mirrors to focus light in a small beam. Then focus the beam on the photovoltaics. More efficient system

5. Solar power
Photovoltaic Materials: Most commonly used material is silicon crystals

6. Who Uses Solar Power
Most effective near the equator = high intensity of sunlight
-Used in Eastern Canada, Europe

7. Solar Panel
Parts of the solar panel: Cell: A silicon crystal sheet with wire weaved over it. Module (Panel): A collection of cells connected together Array: A collection of modules connected together

8. How Does A Solar Panel Work
Step 1: Sunlight is absorbed through the glass

9. How Does A Solar Panel Work
Step 1: Sunlight is absorbed through the glass Step 2: The energy of the light causes the extra electrons on the negative-type silicon to jump to the holes on the positive-type silicon

10. How Does A Solar Panel Work
Step 1: Sunlight is absorbed through the glass Step 2: The energy of the light causes the extra electrons on the negative-type silicon to jump to the holes on the positive-type silicon Step 3: When the electrons move across they create an electric charge Step 4: The charge is picked up by the metal contacts which bring it to the battery

11. How Does the System Work?
Parts of a Household system:

12. Parts of the System
Solar Cell (AKA Photovoltaic Cell): Collects the solar energy and converts it to electrical

13. Parts of the System
Solar Cell (AKA Photovoltaic Cell): Collects the solar energy and converts it to electrical Battery: Collects the electrical energy

14. Parts of the System
Solar Cell (AKA Photovoltaic Cell): Collects the solar energy and converts it to electrical Battery: Collects the electrical energy Inverter: Converts the direct current electricity from the battery to alternating current that household appliances can use

15. Pros
Reliable source of power in places that experience high levels of sunlight

16. Pros
Reliable source of power in places that experience high levels of sunlight
Can be used in an isolated area (weather station)

17. Pros
Reliable source of power in places that experience high levels of sunlight
Can be used in an isolated area (weather station)
Does not produce any greenhouse gases
Cheep to maintain

18. Cons
Does not work efficiently in places that do not experience high levels of light

19. Cons
Does not work efficiently in places that do not experience high levels of light
New Technology:
Initial setup is expensive
Not as efficient as they will be in the future

20. Assignment
-Create a poster that explains how a solar power system works -Use arrows and a few words to explain what happens -Start from how the solar cell works then expand into how the whole system works