3 ms·
> “We need to reduce the 60 to 80 kilowatt hours) of electricity it takes to produce a one kWh battery,” Was this transcribed correctly? 60-80kWh for a device
by epistasis 4y ago
> “We need to reduce the 60 to 80 kilowatt hours) of electricity it takes to produce a one kWh battery,”
Was this transcribed correctly? 60-80kWh for a device that can be charged thousands of times doesn't seem that bad... And even for the higher performance lower-cycling number batteries in phones, it doesn't seem that bad.
- Dead_Lemon 4y ago60-80Kwh is enough to power a house for a week+, for a battery that can store 2 hours of power? Sure its reusable, but the energy debt is large and it will remain a power consuming device. Mostly due to charging the battery from non renewable sources, essentially, never paying off the power debt to create it.
- epistasis 4y agoComparing to a house is not insightful unless compared to the function of that 1 kWh. On the grid, 1kWh of battery will shift multiple MWh of energy in its lifetime. The energy for production is on the order of 1% of its utility over time. If, say, fracking for natural gas produced so much utility for so little energy input, we would have to worry a lot more about natural gas competing with batteries. The primary metric to focus on for batteries should be total cost, which is what will give batteries an even bigger edge over natural gas peakers. Reducing the energy input for 1kWh of capacity from 60 kWh to, say, 6 kWh will have minimal benefit for speeding the transition tk a carbon free energy system. With solar costs as $0.02/kWh, that 60kWh is only $1.20 of a battery pack that costs multiple hundred dollars.