Concrete Batteries. Simple, reliable, quick to install, easy to maintain and at 5 cents per KwH (LOCE) as cheap as it gets.
- Alan Baker
- Mar 3
- 1 min read
Lithium based batteries are around 24 to 35 cents per KwH (LOCE ), are at the whim of geopolitics, are complex and need a high level of tech knowledge. Pumped hydro is around 17 cents per KwH (LOCE) but few places have 2 conveniently located reservoirs. Creating a lump of concrete and lifting it higher (charging) and lowering it (discharging) can all be done relatively easily using in existing mine shafts, existing buildings or as being done in China, creating new massive purpose built buildings (aka batteries) . Storage capacity is around 100 Mwh and peak discharge of peak of 25Mw so favourable to the others.
Here is a 16 minute video showing what is actually happening with this technology around the world and explains the tech behind it. Basically storing potential energy from excess renewable e.
Wonder no more why China is on the up and the fossil fuel west isn´t.


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