3 ms·

Now do the calculation looking at the cycle life of the battery, not the lifetime in years.... Turns out today's stationary batteries deliberately keep their s

Now do the calculation looking at the cycle life of the battery, not the lifetime in years.... Turns out today's stationary batteries deliberately keep their state of charge in a narrow range in the middle (ie. 40-60% charged), which reduced storage kWh, which in turn increases cost per kWh stored, all in the name of increasing cycle life, which impacts the capital cost per kWh cycled..

epistasis 3y ago
Every grid battery I have ever heard of already only reports that "reduced" amount, which is part of how they get to 5000-6000 cycles. So doing it again would be double counting that. Note just how big of a difference there is between the cell price of <$150/kWh and the installed price of >$450kWh. Some of that is labor, land, concrete slab, inverters, but a good chunk is excess kWh.