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Imagine 40kWh batteries in homes for $5000 installed. It's not far off.

Fill up every night at 5c/kWh off peak. Sell for a profit when the price is right

Good play. Threat of startup breakthroughs will be crushed.
GM forecasted $87/KWh for Ultium cells by 2025 early last year. Then, just 9 months later, the company also reported 40% decline in cell cost YoY in 3Q of last year.

The price of lithium has fallen by 80+% since the 2022 peak: there isn't some CATL and BYD rivalry that some make it out to be.