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If you wanted to build one at the scale of a PowerWall (5kW/13.5kWh) what kind of height/weight combinations would be required? By my calculations you would ne

by zaroth 6y ago

If you wanted to build one at the scale of a PowerWall (5kW/13.5kWh) what kind of height/weight combinations would be required? By my calculations you would need to raise 40 tons up 3 meters to store 13.5kWh. Definitely not a home storage revolution! Now, if the entire house was built on a lift....

mkj 6y ago
Isn't that 0.326 kWh? 40e3 * 9.8 * 3 / 3600
- zaroth 6y ago
  Damn, you're absolutely right. Off by a factor of ~40... You would need to raise the 40 tons up 120 meters, or conversely, you would need to raise 1,600 tons up 3 meters.