Looking good. To bad the batteries are so expensive. But then again. the price of electricity keeps rising to breakeven point will get closer.

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The price on raw cells is dropping dramatically. The next pack I build will be with 305Ah cells. This will be at about 2x the cost for 3x the capacity, and I expect that ratio to increase as the latest generation cells come into the market and the price of these older cells drops even further.

Also, if you can generate your own electricity, you're ahead of the game, too.