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Renewable and Non-Renewable Energy Sources

Renewable and Non-Renewable Energy Sources. Humans are very reliant upon electricity . Think back to the blackout of August 2003 and recall how whole cities were shut down. Since we rely on electricity so much, it’s important to produce as much of it as possible and

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Renewable and Non-Renewable Energy Sources

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  1. Renewable and Non-Renewable Energy Sources • Humans are very reliant upon electricity. • Think back to the blackout of August2003 and recall how wholecities were shut down. • Since we rely on electricity so much, it’s important to produce as much of it as possible and conserve it whenever we can. Notice the dark spot… this entire part of Canada and the USA was without power.

  2. RENEWABLE vs. NONRENEWABLE ENERGY SOURCES All energysources are either renewableor nonrenewable. A renewable energy source is one that doesnotget usedup when it producesenergy, therefore we can keep using it. Examples of renewableenergy sources are as follows:

  3. Wind Energyis produced by using large propellers mounted on top of towers (there is one in downtown Toronto near the Exhibition Grounds). Windforces the propellers to move. When the propellers move they spin a generatorwhich is capable of producing electricity.

  4. Solar This is using energy from the sun to generate electricity. Solar energy shines upon a device called a solarcell or solar panel which is able to generateelectricity. Currently, solar cells are used to light portable construction signs (warning you of upcoming roadconditions) and some shingles (roofing material) contain solar cells so that a house can generate some of its own electricity.

  5. Hydro This is when electricity is generated from fallingwater (example: NiagaraFalls). The falling water spins aturbinewhich is connected to a generator. The generator creates the electricity.

  6. A nonrenewable energy source is one that cannot be usedagain and cannot be replaced once it’s beenused. Examples of nonrenewableenergy sources include:

  7. FossilFuels These include coal, oil, and gas. To create electricity from these fuels, they must be burned. Not only can these fuels not be re-used, they create a lot of airpollution. They are called fossilfuels since they are created over millionsof years from dead and buried organisms. It is estimated that we will eventually use up our storage of fossilfuels within the next 200 years if we keep using them as much as we do.

  8. NuclearEnergy This is energy that is produced when uranium (U) atoms are split apart (fission) in nuclearreactors. A lot of energy is released from this process and it doesn’t create air pollution, however, it does produce very radioactivewaste products. Scientists have not yet been able to figure out where to store these waste products.

  9. According to Canada’s Ministry of Energy, Science, and Technology, Ontario currently (2004) uses the following sources of energy:

  10. COMPARING ENERGY PRODUCTION TECHNOLOGIES When comparing differentmethods of energy production, the following factorsneed to be considered: Cost Every energy-producing technology has a different price. One of the most expensive technologies is solar energy, which is why they are not widely used. Most expensive Most efficient

  11. Efficiency Remember that efficiency will use less energy and save money. Wind power is the most efficient energy production technology, however, it is expensive to operate. The efficiencies of hydro,nuclear, oil, and coal are very similar withhydro being the cheapest to operate. Least expensive Most efficient

  12. Geography Different forms of renewable energy have ideal geographical areas where they can be produced. Nuclear power plants use massive amounts of water daily and therefore need to be built next tobodies of water. One of Ontario’s largest nuclearpower plants (Darlington) is located approximately70kmeast of Toronto off of Lake Ontario.

  13. Hydro electricity only operates in areas with large amounts of running water. NiagaraFalls generates energy that is used over the entire Eastern coast of North America.

  14. Storage and Transmission It is very difficult to store electricity. Devices called “capacitors” can only store small amounts of electricity. The problem with electricity is that once it is produced, it must be used. If you can’t store electricity, how beneficial are solar cells at night during the winter when furnaces need to operate?

  15. Many renewable energy sources cannotconstantly produce energy. Energy is constantly traveling through high-voltage wires from power plants that generate electricity. Since the electricity will encounter resistance as it travels through the wires, heat is lost and less energy can be transferred over longdistances.

  16. Impact on the Environment All types of electricity havenegativeimpacts on theenvironment. Some examplesinclude: Wind turbines require largeopen fields. Many birds are harmed or killed when they fly into the propellers. Burning fossilfuels produceslargeamounts of airpollution and acidrain. Nuclearenergy produces highlyradioactivewastes which take up to millions of years tobreak down. Hydro requiresfloodingof neighbouringareas and interferes with fish populations.

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