A coal-fired power station and a single large offshore wind turbine both produce electrical power.
The coal-fired power station produces 1500 MW1500\text{ MW}1500 MW and the offshore wind turbine produces 5.0 MW5.0\text{ MW}5.0 MW under optimal conditions.
Give one advantage of using offshore wind turbines instead of a coal-fired power station to produce electricity.
Coal-fired power stations are still widely used to generate electricity. Explain why offshore wind turbines have not completely replaced them.
