From all I have read, lithium supply does not seem to be a major concern [1]. But if your numbers are correct, note that the currently mined lithium reservers a

From all I have read, lithium supply does not seem to be a major concern [1]. But if your numbers are correct, note that the currently mined lithium reservers are 14,000,000 tonnes [2]. 1 tonne lithium then gives you 10MWh of capacity. So 140PWh sounds like a lot of capacity, and this assumes we just stick to places that are currently minded and don't explore alternatives like extraction from seawater [3]. [1] https://www.greentechmedia.com/articles/read/Why-Lithium-Isnt-the-Big-Worry-for-Li-ion https://www.greentechmedia.com/articles/read/Why-Lithium-Isn... [2] https://en.wikipedia.org/wiki/Lithium https://en.wikipedia.org/wiki/Lithium [3] http://www.tandfonline.com/doi/abs/10.1080/01496398608056148 http://www.tandfonline.com/doi/abs/10.1080/01496398608056148