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Re:Tesla's giant battery saved $40M during its first year, r... by tinus_hn on Thursday December 06, 2018 @11:26AM (#18619386)
Note that the amounts are in AUD dollaridoos, it's $48m USD for saving $29m USD.

The savings are because you can use the energy generated by green sources to charge the battery if you can't use it immediately. That's free energy you'd otherwise throw away.

Re:Tesla's giant battery saved $40M during its first year, r... by starshadowx2 on Thursday December 06, 2018 @02:06PM (#18621027)
It's not in AUD, it's in USD. From the linked article for cost -

"The French energy company revealed that the entire system cost 56 million euros (~$66 million USD)"

Re:Tesla's giant battery saved $40M during its first year, r... by zik on Thursday December 06, 2018 @05:02PM (#18622758)
> The savings are because you can use the energy generated by green sources to charge the battery if you can't use it immediately

Not true. The system is used for grid stabilisation rather than large scale power storage. It doesn't have the capacity to power South Australia for more than a few minutes at most.