Supply and demand
1 mark · NormalWhich of these power stations is LEAST able to meet sudden increases in electricity demand?
- A.Coal-fired power station
- B.Gas-fired power station
- C.Hydroelectric power station
- D.Wind farm
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Correct option: Coal-fired power station
Also accept: Nuclear power station (with correct justification)
Common mistakes: Choosing gas-fired or hydroelectric
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Marking points
A1 · 1 mark · Correct answer: Coal-fired power station
Worked solution
Coal-fired power stations take a long time to start generating electricity because they need time to heat up the boilers.