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Nuclear Energy:
- Uranium or plutonium atoms are split in a reactor to release heat.
- Heat generates steam, which drives a turbine connected to a generator, producing electricity.
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Solar Energy:
- Photovoltaic (PV) Cells: Sunlight hits PV cells, generating electric current through semiconductor materials.
- Solar Thermal: Mirrors focus sunlight to heat fluid, producing steam that drives a turbine to generate electricity.
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Wind Energy:
- Wind turns turbine blades connected to a generator.
- The rotation of the blades generates mechanical energy, which is converted into electricity.
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Hydroelectric Energy:
- Flowing or falling water (often from a dam) spins a turbine.
- The turbine powers a generator, converting kinetic energy of water into electricity.
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Tidal Energy:
- Tidal Stream: Moving tides turn underwater turbines, generating electricity.
- Tidal Barrage: Water flows in and out of a dam-like structure, driving turbines as tides rise and fall.
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Wave Energy:
- Wave motion moves floating or submerged devices, driving pistons or turbines.
- This movement generates electricity, often converted directly or stored in batteries.
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Geothermal Energy:
- Heat from underground reservoirs heats water, producing steam.
- Steam drives a turbine connected to a generator to produce electricity.
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Biomass and Bioenergy:
- Direct Combustion: Biomass is burned to produce heat, which can generate steam for turbines.
- Biochemical Conversion: Microorganisms break down organic material, producing biogas (methane) for combustion.
- Thermochemical Conversion: Biomass is gasified or pyrolyzed to create biofuels for combustion or refining.
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Fossil Fuels (Coal, Oil, Natural Gas):
- Combustion: Fuels are burned to produce heat, creating steam.
- Steam drives turbines connected to generators, producing electricity.
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Battery Energy Storage:
- Charge: Electric current flows into the battery, storing energy in chemical bonds.
- Discharge: The process reverses, releasing stored energy as electric current.