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I don't know why this article keeps using the word 'massive'. 20MW is tiny at utility scale. For comparison the typical pumped-storage station has 1,000-3,000MW
by guelo 10y ago
I don't know why this article keeps using the word 'massive'. 20MW is tiny at utility scale. For comparison the typical pumped-storage station has 1,000-3,000MW capacity.
- the8472 10y agoPumped-storage exploits pre-existing landscape features. Battery storage is essentially building storage from scratch in places where no favorable geological features exist. How much would digging a mineshaft, a bedrock cavern and a lake or additional caverns just to pump water up and down cost?
- throwaway91111 10y agoWhen weighted against cost and expected lifetime, it may not make sense to do this over e.g. solar + molten salt.
- greglindahl 10y agoExcept that utility-scale thermal solar + molten salt doesn't exactly have a good track record so far. It'd be great if it lived up to expectations...
- pokemon-trainer 10y ago80 MWh is massive for a battery. MW are a measure of power, not energy. You mean MW-h. It's incorrect to say something has a MW capacity when discussing energy storage.
- deathanatos 10y ago> MW are a measure of power, not energy. You mean MW-h. It's incorrect to say something has a MW capacity when discussing energy storage. He's quoting TFA, > With a capacity of 20 MW/80 MWh It would seem sensible that the system has both metrics: a total capacity of storage, and a total rate at which it can supply that storage to things connected to it. Further, my understanding is that the parent you're responding to is correct: pumped-storage hydro tends to have much greater generation rates; Wikipedia lists an example of 360MW.
- Dylan16807 10y agoBatteries have inherently high MW per MWh so you can usually ignore the power capacity. But that's not true with everything. Both numbers are important.
- deleted 10y ago[deleted]