Accept one of the following:
- Decrease in water storage due to drought, evaporation or reduced rain fall decreases the amount of electricity generated.
- Increased need for irrigation due to drought or reduced rainfall leads to reduction of the amount of water stored in reservoirs, decreasing the amount of electricity generated.
- Increased frequency of extreme precipitation events such as floods or droughts as a result of climate change cause a larger amount of sediments to fill the reservoir, reducing storage capacity and decreasing the amount of electricity generated.
- In the short-term, run-off may increase from loss of glaciers, leading to increased water available for power production, increasing the amount of electricity generated.
- In the long-term, after glaciers melt, there will be decreased run-off, decreasing water storage, decreasing the amount of electricity generated.
Total for part (b) 4 points