Renewable%20energy

Renewable Energy

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Energy sources that are not depleted when used or are naturally replenished within a human lifetime.

Renewable Energy

Definition

Renewable energy is energy produced from sources that do not deplete or can be replenished within a human’s life time. The most common examples include wind, solar, geothermal, biomass, and hydropower[1]. This is in contrast to non-renewable sources such as fossil fuels.

 
 

Most renewable energy is derived directly or indirectly from the sun. Sunlight can be captured directly using solar technologies. The sun's heat drives  winds, whose energy is captured with turbines. Plants also rely on the sun to grow and their stored energy can be utilized for bioenergy[2]Types of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/homeTypes of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/homeTypes of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/homeTypes of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/homeTypes of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/homeTypes of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/homeTypes of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/homeTypes of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/homeTypes of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/homeTypes of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/homeTypes of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/homeTypes of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/home

Not all renewable energy sources rely on the sun. For example, geothermal energy utilizes the Earth’s internal heat, tidal energy relies on the gravitational pull of the moon, and hydropower relies on the flow of water.

Context

Renewable energy accounts for 13.5% of the world’s total energy supply, and 22% of the world's electricity [3]IEA FAQ http://www.iea.org/aboutus/faqs/renewableenergy/IEA FAQ http://www.iea.org/aboutus/faqs/renewableenergy/IEA FAQ http://www.iea.org/aboutus/faqs/renewableenergy/IEA FAQ http://www.iea.org/aboutus/faqs/renewableenergy/IEA FAQ http://www.iea.org/aboutus/faqs/renewableenergy/IEA FAQ http://www.iea.org/aboutus/faqs/renewableenergy/IEA FAQ http://www.iea.org/aboutus/faqs/renewableenergy/IEA FAQ http://www.iea.org/aboutus/faqs/renewableenergy/IEA FAQ http://www.iea.org/aboutus/faqs/renewableenergy/IEA FAQ http://www.iea.org/aboutus/faqs/renewableenergy/.   

Renewable energy systems are a major topic when discussing the globe's energy future for two main reasonsBoyle, G., Everett, B., Alexander, G. (2004). Renewable Energy. Retrieved from http://www.uccs.edu/~rtirado/PES_2500/9780199545339_chap01.pdf :

  1. Renewable energy systems provide energy from sources that will never deplete.
  2. Renewable energy systems produce less greenhouse gas emissions than fossil fuel energy systems.

While renewable energy systems are better for the environment and produce less emissions than conventional energy sources, many of these  sources still face difficulties in being deployed at a large scale including, but not limited to, technological barriers, high start-up capital costs, and intermittency challenges[4]Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 .

It is important to note that the terms ‘renewable energy’, ‘green energy’ and ‘clean energy’ are not interchangeable in all cases; for example, a ‘clean’ coal plant is simply a coal plant with emissions reduction technology. The coal plant itself is still not a ‘renewable energy’ source. ‘Green energy’ is a subset of renewable energy, which boasts low or zero emissions and low environmental impacts to systems such as land and water[1]United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ .

References

  1. a, b United States Environmental Protection Agency (2014). Green Power Defined. Retrieved from http://www.epa.gov/greenpower/gpmarket/ 
  2. ^ Types of Renewable Energy”. Renewable Energy World.com http://www.renewableenergyworld.com/rea/tech/home
  3. ^ IEA FAQ http://www.iea.org/aboutus/faqs/renewableenergy/
  4. ^ Painuly, J. P. (2001). Barriers to renewable energy penetration; a framework for analysis. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960148100001865 

International organization

International Renewable Energy Agency (IRENA)

The Intergovernmental Renewable Energy Organization (IREO)

Renewable Energy and Energy Efficiency Partnership

American Council On Renewable Energy (ACORE)

EKOenergy

EurObserv'ER

The World Council for Renewable Energy (WCRE)

International or Prominent Industry Association

National Renewable Energy Laboratory (NREL)

Research institution

The Renewable and Appropriate Energy Laboratory

Renewable and Sustainable Energy Institute

DESERTEC University Network

National Renewable Energy Laboratory - Energy Analysis

The Association of European Renewable Energy Research Centres (EUREC)

The Centre for Renewable Energy Systems Technology (CREST), Loughborough University

Centre for Alternative Technology (CAT)

RES - The School for Renewable Energy Science

Conn Center For Renewable Energy Research

Academic Journal

Journal of Renewable and Sustainable Energy

Renewable Energy, elsevier

International Journal of Renewable Energy Research (IJRER)

History

ProCon .org - History of Alternative Energy and Fossil Fuels

Politics

AENews - Energy Politics

E-International Relations (E-IR) - Political Promotion of Renewable Energy in the United States and Germany

ECONOMICS 

The Economist - Alternative Energy

The Economist - How Renewable Energy can become competitive

ENVIRONMENTAL IMPACT

Union of Concerned Scientists - Env. Impacts of Renewable Energy Technologies

BUSINESS ANALYSIS 

Science Business - Renewable power in Europe - Why we need a better approach

The Economist - Not a toy

HEALTH IMPACT 

ScienceNordic - Green Energy will cut health care costs

International Institute for Applied Systems Analysis - Human health impacts for renewable energy scenarios from the EnerGEO Platform of Integrated Assessment (PIA)

SUSTAINABILITY 

Potsdam Institute for Climate Impact Research & Technische Universität Berlin

DOCUMENTARIES

National Geographic

Other Interesting essays/articles

conserve energy future

AENews (Alternative energy news)

The Renewable and Appropriate Energy Laboratory

Renewable and Sustainable Energy Institute

DESERTEC University Network

Take a Step Back

Energy

Energy is the capacity of a physical system to perform work.

Keep Learning! Progress To

Wind

Wind Energy refers to technology that converts the air’s motion into mechanical energy usually for electricity production.

Water

The energy harnessed from moving water can be used to create electricity; the two most common technologies for this are - Hydropower and Tidal Power.

Solar

Solar energy refers to technologies that convert the sun's heat or light to another form of energy for use.