Examples from literature

• An interesting new idea for water power involves storing the power from other renewable energy sources, such as wind turbines, when more power is generated than is needed at a particular time. 
• First, hydroelectricity was developed: electricity could be generated from water power. 
• Steam is a source of water power, too! 
• The next great improvement in water power was in the 19th century, when the modern water turbine was invented. 
• Water power can cause natural disasters. 
• Water power was also used as a way to tell time, by measuring how much water flowed into or out of a vessel.