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A comment on Tesla's giant battery saved $40M during its first year, report says. Parent comment

Re:Tesla's giant battery saved $40M during its first year, r... by benj111 on Thursday December 06, 2018 @10:55AM (#18619061)
I think your maths is off.

$40m * 4 = $160m

$240m / $40m = 6 years

Edit: Mixed up cost and income?

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