Tesla’s giant battery in Australia reduced grid service cost by 90%

Re:Tesla’s giant battery in Australia reduced grid service c... by mrep on Friday May 11, 2018 @11:51PM (#17052395)

I've been meaning to do the math on how much capacity used car batteries can be continuously recycled into grid storage where capacity/weight isn't a big deal but haven't gotten around to it.

My hunch is that those used batteries will single handedly store peak reusable energy for down times if electric cars grow to dominate the market.

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Re:Tesla’s giant battery in Australia reduced grid service c... by _ph_ on Saturday May 12, 2018 @03:02AM (#17052866)

The current automobile production is over 70 million/year. The battery capacity for a single car ranges from 30-100 kWh. The current middle class is offering 60kWh (Model3, Bolt, Leaf 2019). So if we assume only 30 kWh/car at the end of the useful battery life, we get about 2 TWh of used battery capacity every year - though that point of time is quite in the future, as batteries are expected to last at least 10 years, if not more. As a comparison, the daily energy usage of Germany is about 1.6 TWh.

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