MODULE 3

• Geothermal energy


  Energy harnessed from the Earth's underground
• Geothermal power plant


  1. Magma heats water reservoir to produce steam

  2. Steam drives turbine

  3. Turbine powers generator

  4. Generator produces electricity
• Geothermal power plant


  • Usually built near volcanoes where heat from magma is used
  • Converts heat energy into electrical energy
• The Philippines ranked second in producing geothermal energy with 1094 megawatts worldwide due to the presence of stratovolcanoes
• Advantages of geothermal energy

  • Renewable energy source
  • No fuel required
  • Abundant supply of energy
• Disadvantages of geothermal energy

  • Potential emissions of greenhouse gases, sulfur dioxide, silica and traces of toxic heavy metals
  • Location specific - can only be built near tectonic boundaries
  • High cost of installation