- Joined
- Nov 4, 2009
- Messages
- 4,022
- Reaction score
- 1,808
- Location
- Devon/South Hams
- Hive Type
- National
- Number of Hives
- 5
I believe hydro power is used like a battery. Turbines only switched on at times of high electricity demand. When demand is low water can be pumped back up to recharge "the battery"