You should spend about 20 minutes on this task. The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words.

The diagram illustrates the process by whichelectricity is generated in a hydroelectric power station using the flow of water. Overall, the system operates in two main phases: electricity generation during the day and water recycling at night. Water stored in an upper reservoir is released to generate electricity before being collected in a lower reservoir […]

The diagram illustrates how electricity is produced in a hydroelectric power station that uses two reservoirs at different levels. Water is collected from a river in a high-level reservoir, which is held back by a dam. From the high reservoir water flows through an intake (which is open during the day and closed at night) […]