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Renewable energy
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- 2. Non-renewable energy • Non-renewableenergy comes from sources that will run out or will not be replenished in our lifetimes—or even in many, many lifetimes. Most non-renewable energy sources are fossil fuels: coal, petroleum, and natural gas.
- 3. Renewable energy • Renewableenergy is energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.
- 4. • FACTS &FIGURES Power production in Pakistan meets its energy requirement around 29% by indigenous gas 35% by oil (approx.) 35% by hydro electricity (approx.) Coal and nuclear contribution to energy supply is limited to 0.16% and 2.84% respectively with a vast potential for growth
- 6. The Advantages ofRenewable Energy • One major advantage with the use of renewable energy is that as it is renewable it is therefore sustainable and so will never run out. • Even more importantly, renewable energy produces little or no waste products such as carbon dioxide or other chemical pollutants, so has minimal impact on the environment.
- 7. The Disadvantages ofRenewable Energy • One disadvantage with renewable energy is that it is difficult to generate the quantities of electricity that are as large as those produced by traditional fossil fuel generators. This may mean that we need to reduce the amount of energy we use or simply build more energy facilities.
- 8. • Another disadvantageof renewable energy sources is the reliability of supply. Renewable energy often relies on the weather for its source of power. Hydro generators need rain to fill dams to supply flowing water. Wind turbines need wind to turn the blades, and solar collectors need clear skies and sunshine to collect heat and make electricity.
- 9. Top 5 Typesof Alternative and Renewable Energy 1. Solar Power 2. Wind Power 3. Biomass Energy 4. Geothermal Energy 5. Hydropower
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- 11. Solar Power • Solarpower is the conversion of energy from sunlight into electricity, either directly using photovoltaics (PV),
- 12. Photovoltaic Principle • Simplyput, a solar panel works by allowing photons, or particles of light, to knock electrons free from atoms, generating a flow of electricity.
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- 18. Wind Energy • Windpower is the use of air flow through wind turbines to mechanically power generators for electric power.
- 20. Biomass energy • Biomassfuels come from things that once lived: wood products, dried vegetation, crop residues, aquatic plants and even garbage.
- 21. Hydropower • Moving waterhas kinetic energy. This can be transferred into useful energy in different ways. Hydroelectric power (HEP) schemes store water high up in dams. The water has gravitational potential energy which is released when it falls
- 22. As the waterrushes down through pipes, this stored energy is transferred to kinetic energy, which turns electricity generators
- 23. • the totalinstalled hydro capacity was 6 481 MW, almost exactly one-third of total national generating capacity. • The total Hydropower resource in Pakistan is estimated at about 50,000 MW
- 24. Price comparison • Pricecomparison Hydroelectric 2.5 Rs/kWh Natural gas 7.5 Rs/kWh Diesel/furnace oil 12 Rs/kWh IPP’s 14-18 Rs/kWh
- 25. • Maintenance Hydro-electricpower has a nominal repair and maintenance cost Solar energy power has high repair and maintenance cost Wind energy power has high repair cost Coal energy has also nominal repair and maintenance cost
- 26. • Environmental Hydro-electricpowerhas no harmful effect on environment Other energy sources such as Coal, Nuclear and gas energy affects the environment badly by the emission of dangerous gases and chemicals Radioactive waste from Nuclear power plant is dangerous for life.
- 27. • Availability • Hydro-electricpower uses the most abundant resource on earth i.e. Water • Solar energy is sunlight dependant. The countries near the equator can utilize maximum of it. • Wind energy is Wind dependant. • Coal and gas energy is resources dependant.