1. Renewable Energy Sources 1A2 Geography 29 th September 2014

2. Topics for today’s class… Why do we need to develop renewable sources of energy? How many types of renewable energy sources are there? Which is the most popular source of renewable energy in Ireland? Will we be getting homework today?

3. Why do we need to develop renewable sources of energy? Electricity generated by burning fossil fuels. Coal, peat, oil and gas. Finite/ non-renewable. Conserve fossil fuels Make greater use of renewable energy resources. Environmental benefits

4. How many types of renewable energy sources are there? Several, including: Hydroelectric Power (HEP) Solar Energy Geothermal Energy Tidal Energy Wind Energy

5. Hydroelectric Power Force of falling water turns turbines – generating electricity. Examples include Inniscarra Dam. 1953 ESB 19 MW

6. Solar Energy Heat. Light. Captured by solar cells in solar panels. Electricity

7. Geothermal Energy Water heated when pumped deep into Earth’s crust. Pumped back to surface – heats homes. Steam turns turbines – generating electricity. Iceland.

8. Geothermal Energy Iceland http://www.youtube.com/watch?v=XRAQrDd uaU0 http://www.youtube.com/watch?v=XRAQrDd uaU0

9. Tidal Energy Tides rise and fall. Turbines turn. Electricity generated.

10. Which is the most popular source of renewable energy in Ireland? What do you think?

11. Wind Energy Moving wind turns turbines – electricity generated. Popular. Turbines very big. “Wind Farms.” Built out at sea – windy, prevents visual pollution. Many examples in Ireland.

12. Homework Page 23. Question 6, parts (i) (ii) & (iii). To be completed for tomorrow’s class.