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At the moment Lithium batteries are cost effective for about 2-4 hours of storage, if you halve costs that would go down to 4-8 hours, but the point is that it’
by Brakenshire 7y ago
At the moment Lithium batteries are cost effective for about 2-4 hours of storage, if you halve costs that would go down to 4-8 hours, but the point is that it’s very unlikely that you will ever get reductions large enough to store energy over weeks or months. Even 2 days would require costs to fall to 10% of where they are now.
- lovemenot 7y agoThere seems to be an error in those assumptions. Halving costs need not be equivalent to doubling of economic capacity. It might just as well cause an order of magnitude or higher of increased capacity. I would not be able to estimate those factors, but it's almost certainly incorrect to assume a linear relationship between cost and productive capacity.
- Brakenshire 7y agoEach halving in cost doubles the amount of storage you can apply to any one project for the same cost. 2 hour storage on a solar or wind farm costs around about £5 per MWh, levelized over the batteries lifetime. There is no way to get around that, as far as I can see.