I'm not arguing that utilities don't suck or aren't a big part of the problem, though. There are issues with Lifepo4 chemistry batteries (though I guess many of the recycling issues are being solved) that preclude them being an ideal choice for home battery use (flammability, supply or waste infrastructure, etc.) but they are one of the more promising options. Sodium Ion still has a long way to come in terms of manufacturability, as far as I understand it? But hopefully in the near future they start demonstrating their suitability via implementation.