The warm water created by Iceland’s Nesjavellir Power Plant, above, is pumped up the mountain behind the plant to the residents of Reykjavík, 27 kilometers (16.8 miles) away. The pipeline is so well insulated that the water only loses 1.8 degrees Celsius (3.2 degrees Fahrenheit) on its journey.
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Read the Fast Facts first!
Is geothermal energy considered a renewable energy? Why?
Yes. Geothermal energy is drawn from the Earth's internal heat, which does not change or run out like non-renewable sources of energy, such as oil and coal.
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What country generates the most geothermal energy?
The United States generates the most geothermal energy.
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How much heat is lost as the water moves through the pipeline from the geothermal power station to Reykjavik? Why?
The pipeline is so well-insulated that the water only loses 1.8° Celsius (3.2° Fahrenheit) on its journey.
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Imagine that you run a geothermal power plant like the Nesjavellir Power Plant. You want to make the plant more environmentally friendly. What are some other ways you can use renewable energies to make the plant more environmentally sound?
Possible response: You can use solar or wind power to pump the warm water to the town.
- Geothermal energy is extracted from within the Earth. Magma heats up rocks and water in the crust. The heated water and steam from the rocks then make their way to Earth's surface.
- Renewable energies are power sources that won't run out.
- Geothermal heat is a renewable energy because it is continually being produced in the Earth.
- The United States generates more geothermal energy than any other country.
energy resources that are exhaustible relative to the human life span, such as gas, coal, or petroleum.
industrial facility for the generation of electric energy.
energy obtained from sources that are virtually inexhaustible and replenish naturally over small time scales relative to the human life span.
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Writer
Hilary Dixson
Editor
Caryl-Sue, National Geographic Society
Producer
Nina Page, National Geographic Society
Last Updated
March 2, 2011
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Energy Resources
Coal, one of humankind’s earliest fuel sources, is still used today to generate electricity. However, over time, there has been a shift in demand for cheaper and cleaner fuel options, such as the nonrenewable energy source of natural gas, and renewable options like solar power and wind energy. Each energy resource has its advantages and disadvantages. Explore nonrenewable and renewable options with this collection on energy resources.
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Energy Resources
Coal, one of humankind’s earliest fuel sources, is still used today to generate electricity. However, over time, there has been a shift in demand for cheaper and cleaner fuel options, such as the nonrenewable energy source of natural gas, and renewable options like solar power and wind energy. Each energy resource has its advantages and disadvantages. Explore nonrenewable and renewable options with this collection on energy resources.
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Energy Resources
Coal, one of humankind’s earliest fuel sources, is still used today to generate electricity. However, over time, there has been a shift in demand for cheaper and cleaner fuel options, such as the nonrenewable energy source of natural gas, and renewable options like solar power and wind energy. Each energy resource has its advantages and disadvantages. Explore nonrenewable and renewable options with this collection on energy resources.
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Energy Resources
Coal, one of humankind’s earliest fuel sources, is still used today to generate electricity. However, over time, there has been a shift in demand for cheaper and cleaner fuel options, such as the nonrenewable energy source of natural gas, and renewable options like solar power and wind energy. Each energy resource has its advantages and disadvantages. Explore nonrenewable and renewable options with this collection on energy resources.