4 ms·

I do not know about Gravicity but Heindl Energy (bankrupt as of this year) planned to lift a granite block 500m in radius hydrolicly for an on paper storage cap

• syllable_studio 6y ago
  Wow, I didn't know they went bankrupt! Sad, thank you Heindl for paving the way forward. Innovation is truly a collaborative effort. https://heindl-energy.com/about-us/ https://heindl-energy.com/about-us/
• tzs 6y ago
  How about combining that with a landfill? Dig a very deep hole with a radius of 500 m, with a 500 m granite block that you can raise and lower in it to store and retrieve energy. When the block is raised, toss trash into the hole. Then when the block is lowered to retrieve energy it also becomes the world's largest trash compactor. Eventually, you'll get enough trash in the hole that even massively compacted you won't have enough room to make the energy storage from raising the block worthwhile. You then have to dig another hole and move the block, leaving behind a full landfill that has more trash in it than a normal landfill of that size would have.
  • patall 6y ago
    I think that neither is compacting trash that much a problem that you need a huge granite block for that (hydraulic press should be sufficient), nor do you want to move a block of granite 1km in diameter more than necessary. The idea by Heindl was to cut the granite cylinder in the place where the plant is build.