Tongland Power Station generates hydroelectricity from the power of the River Dee. A simple demonstration with plastic bottles is used to explain how electricity is generated. Water from the River Dee is collected into a reservoir. This is then released through a pipe, which channels it towards a turbine. The moving water turns the turbine, which generates the electricity. After this the water continues its flow down the Dee towards the sea. Tongland is one of six power stations on this river system. It generates enough electricity to light up 18,000 homes.
Students could have a go at conducting the same experiment Tess conducted in this clip, using water to spin blades, which can in turn power a generator to create electricity. Students could draw a diagram of their experiment and label each of the different parts.
They could then be shown pictures of Tongland Power Station or another hydroelectric plant. Students could try to match the pictures of each part of the plant to the part of their diagram. For example, the reservoir would be the first bottle of water. They could stick the pictures beside their diagram to help them understand the process.
Students could also use this clip to explore what is meant by a renewable energy source. Will we ever run out of water? Challenge students to create a list of the advantages of using this type of power to provide us with electricity.