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Before anyone cries about the environmental cost of lithium, concrete batteries are a thing and are far more ideal for grid storage.
by kogasa240p 7mo ago
Before anyone cries about the environmental cost of lithium, concrete batteries are a thing and are far more ideal for grid storage.
- pfdietz 7mo agoYou mean gravity batteries using concrete weights? A scam for suckers.
- kogasa240p 7mo agoNope: https://news.mit.edu/2025/concrete-battery-now-packs-ten-times-power-1001 https://news.mit.edu/2025/concrete-battery-now-packs-ten-tim...
- pfdietz 7mo agoSo, about two orders of magnitude lower specific energy than Li-ion batteries. The extra cost per kg had better be damned small or this won't pencil out.