3 ms·
That is quite an expensive battery if you're just sinking it into the ground as a cube, though. Concrete is pretty expensive and I'm sure carbon black makes con
by idiotsecant 2y ago
That is quite an expensive battery if you're just sinking it into the ground as a cube, though. Concrete is pretty expensive and I'm sure carbon black makes concrete look cheap.
I imagine the benefit would be if you can use it to build your foundation and get energy storage for 'free' in which case that's quite a lot of foundation.
- abdullahkhalids 2y agoYou are actually right [1]. Using the quoted figures of 30'x30'x4'' = 8 meter cube costing 7.5k USD, we get 41k USD. Which is crazy expensive even for foundation. [1] https://homeguide.com/costs/concrete-slab-cost https://homeguide.com/costs/concrete-slab-cost
- dyauspitr 2y agoBut you just need 45 cubic meters of concrete. That’s about $5k.
- idiotsecant 2y agoIt's easily twice that by the time you dig a hole and get it delivered and poured. 180-200 per cubic yard (basically a cubic meter), formed and poured is a good deal.