| ▲ | worldsayshi 3 days ago |
| 80% round-trip efficiency sounds very good. What am I missing? |
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| ▲ | Cthulhu_ 3 days ago | parent | next [-] |
| It's in the ocean, which corrodes and destroys All. |
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| ▲ | Filligree 2 days ago | parent [-] | | I’ll stick with my freshwater fish tank. Fewer bobbit worms as well. |
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| ▲ | marcyb5st 3 days ago | parent | prev [-] |
| That to store enough energy with just haline gradient the reservoirs need to be enormous |
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| ▲ | jillesvangurp 3 days ago | parent [-] | | And under water construction is expensive. And durable construction in a marine environment is challenging (and makes things more expensive). That doesn't mean it's a bad idea but they are factors that add to the overall cost. 20$/kwh is very attractive of course. But that's also a number that e.g. CATL is chasing with sodium ion batteries. And they are going to be making those by the gwh/year from next month. | | |
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