Renewable energy We have to reduce our CO2 emissions and our consumption of fossil fuels

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Transcript of Renewable energy We have to reduce our CO2 emissions and our consumption of fossil fuels

  • Renewable energyWe have to reduce our CO2 emissions and our consumption of fossil fuels

  • Nova ScotiaToday 18% of our electricity is renewableBy 2015, 25% will be renewable (Gov. NS)By 2020, 40% will be renewable (Gov. NS)

  • Solar EnergyFrom the sunHas existed for a long time (calculators)Uses PV (photovoltaic) batteries to capture sun rays which heats up electrons and they make energyGermany, Spain, Japan, and the US are the 4 countries which produce the mosthttp://www.solarns.ca/

  • ResidentialCosts between $35 000-50 000 for installationTakes about 10 years to recoup the costs You can connect the the regular power lines and sell the energy you dont use back to the power companyEfficiency is difficult to predict because of the weather

  • Solar productsCharge your phone or laptop A lunch bag that can heat or keep cold your foodDeck lightsBuild a solarium or a greenhouse Heat the water in your poolThey are working on creating a solar car

  • Hydro energyFrom waterWe build dams and when water goes through, it creates energy20% of the worlds energy (Canada is second in production)In 1879 the first dam was built at Niagara FallsThe biggest dam in the world is on the Yangtze River in China

  • Advantages and disadvantagesEasy to make more or less depending on needA lot less CO2 emissions producedCosts only 3 cents per kWh = 28$ per month for a houseBuilding resevoirs destroys ecosystemsSometimes people are displaced because companies need the land

  • http://www.nspower.ca/en/home/aboutnspower/makingelectricity/renewable/hydromap.aspx

  • Geothermic energyFrom the Earth

  • The US and the Philippines are the top producers in the worldThe biggest refinery is in CaliforniaCosts about 4-10 cents per kWh after installation, which is extremely expensive

  • Wind EnergyFrom the wind Denmark gets 25% of their energy from wind powerAfter installation ($50 000-80 000), about 1-5 cents per kWhDifficult to predict the quantity of power you will get

  • Nova ScotiaWe have 176 turbines which produce 7-8% of our total energyIf a turbine is placed 350m away from a house, the noise you hear is the same as a fridgehttp://www.nspower.ca/en/home/aboutnspower/makingelectricity/renewable/directory.aspx

  • Biomass energyFrom organic organisms

  • Used for electricity and for fuelThe US and Brazil produce the mostIs used a lot in NS in households because a lot of people burn wood for heat3% of our total energy A plant in Port HawkesburyDenmark produces 12% of its energy from biomass