2 ms·

60-80Kwh 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 rema

• epistasis 3y ago
  Comparing 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.