With wind and solar we apparently only need 3 days of storage. For median household thats about 3x29kwh. It costs 87kwh*150$/kwh=13,050$ to produce such battery

With wind and solar we apparently only need 3 days of storage. For median household thats about 3x29kwh. It costs 87kwh*150$/kwh=13,050$ to produce such battery (tho sell it at about 5x markup). Given property prices and how much it costs to upgrade grid, small residential batteries is no brainer.