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    • See, a substation has the luxury of cheap real estate. Weight of the system is immaterial. It's stationary. Lead is cheap. And you've got the space to store it. Real estate even solves the deep draw issues... Just keep throwing capacity at the problem and pair it with a big enough generator and you won't have deep draw issues. The only downside to lead acid when you've a stationary application is it's longevity.

      When I looked into what it would take to replicate a Tesla power wall I found that I could probably come out ahead with a bank of 24 lead acid 2v cells. Hooked up to a 48v smart controller