Renewable Energy

What is Renewable Energy?

Renewable energy is clean electricity derived from natural sources. It cannot be depleted. The most important part about renewable energy is that it is clean; it releases no greenhouse emissions and does not contribute to the greenhouse effect and is imperative to the fight against climate change.


Renewable energy is also getting cheaper than fossil fuels. In the past 19 years, coal prices have risen by 59%, while solar PV cells have dropped by 99% in the last 40 years. While coal prices are dropping again because of lower demand (signaling the demies of coal), they are not competitive with renewable energy. Furthermore, coal is still getting more and more scarce as it is harder to find deposits.

Types of Renewable Energy
Type 1:

Solar photovoltaic (PV) cells take the sun's light energy and then use it to generate electricity

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Type 2:

Solar Energy (PV)

Wind Energy

Wind energy uses wind to turn turbines that generate electricity

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Type 3:

Hydroelectricity

Hydroelectricity uses water, typically in rivers, to turn turbines that generate electricity

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Type 4:

Tidal Energy

Similar to hydroelectricity, tidal energy uses the pull of the ocean's tides to turn a turbine that generates electricity. 

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Type 5:

Geothermal Energy

Geothermal energy harnesses the centralized heat in the earth to generate electricity

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Type 6:

Solarthermal Energy (CSP)

Solarthermal (CSP) energy uses the sun's heat energy to generate electricity

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Sources

Chestney, Nina. “Coal Prices Bounce Back This Year, but Not for Good.” Reuters. Thomson Reuters, July 14, 2016. https://www.reuters.com/article/us-coal-prices-idUSKCN0ZU1JC.


Brown, Mike. “Solar Panels Will Continue to Decline in Price in the 2020s.” Inverse. Inverse, December 30, 2019. https://www.inverse.com/article/61974-solar-prices-2020s-prediction.

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