Mon Prof Augmenté
Electricity on the Grid
Age 17 · Daily Life
Power plants and wind turbines send electricity through transformers, cables, and substations to homes and factories. Storage and flexible generation keep supply equal to demand from second to second.
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In the picture
- Power station: fuel or heat drives generators that produce electricity.
- Step-up transformer: raises voltage so current can travel long distances with lower losses.
- High-voltage pylon: carries the high-voltage line across the landscape.
- Substation: lowers voltage to safe levels for homes and factories.
- Storage connection: battery block and pumped-storage reservoir store energy and release it to balance supply with demand.
Examples
- Charging a phone overnight uses electricity delivered through the local grid.
- A factory running machines on a weekday draws power from the same high-voltage network.
Key takeaways
- Electricity is generated, transformed, transmitted, and distributed before it reaches a socket.
- Storage and flexible plants help match generation to demand when people use more or less power.
Quiz: Electricity on the Grid (Age 17)
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According to the card, in what order does electricity move before it reaches a socket?
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Why is a step-up transformer used in the grid?
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What helps keep electricity supply equal to demand from second to second?
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