You should spend about 20 minutes on this task.
The graph below shows the amount of energy lost from generation of electricity to the time it reaches the consumer from brown and black coal. Summarise the information by selecting and reporting the main points and make comparisons where relevant.
Write at least 150 words.
Model Answer
The graph compares the energy produced from black and brown coal and its loss in power station and transmission and distribution before finally it reaches the consumer. It can be clearly seen from the graph that there is more loss of energy from brown coal than from black coal.
Seventy three per cent of energy is lost in the power station from black coal where as the loss in the power station is sixty three percent from brown coal. Therefore, there is ten percent lesser energy loss from brown coal than from black coal. The loss of energy during transmission and distribution is equal (3%) from both sources. Finally twenty four per cent energy reaches the consumer from black coal but 34% energy reaches the consumer from brown coal.
Overall, it is clear that a substantial amount of energy is lost on the way before finally reaching the consumer in both these cases. However, brown coal is more energy efficient than black coal.