ECOFest 2023 - STEM Hydro Battery Example

Demonstration of using Pumped Hydro as a Water Battery

ECOKids: Grab 2 pieces of bark and place one in the top and one in the bottom. Now if I turn both these taps on simultaneously, which piece of bark will get to the end first? Adults and 8+ kids learn from this and usually make the mistake that the pipe with the downward flow will beat the flat pipe. Younger kids have fun racing the boats.



Need to use a Plastic blue drum next time. Its surprising how quickly the oil drums rust with water standing in them. Automatic pump start somehow, We Need a separate float that is lower to the ground.


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Time Taken:

12+ Hours

  • 2023-04-01 8 hours demo + shutdown help
  • 2023-03-30 2 Hours setup at ECOFest and help with ECOKids.
  • 2023-03-28 2 hours Create in the backyard as a test. Cutting holds etc.
  • 2023-03-27 Looking for a Drum. (THANK YOU, Island Wholesale Services in Ulverstone!)
  • 2023-02-27 1 hour planning equipment and costs.