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A comment on Megapack: Utility-Scale Energy Storage. Parent comment
Tesla batteries put in cars are estimated to last 800-1000 cycles to 80% capacity[1].
Given these figures batteries add around 138g/kWh of CO2 on top of whatever source was used to charge them(say wind at 14g/kWh).
Meanwhile natural gas plants emit around 550g/kWh. The battery would have to last less than 250 cycles to match that.
[0] https://www.sciencedirect.com/science/article/pii/S136403211...
[1] https://electrek.co/2018/04/14/tesla-battery-degradation-dat...
Tesla batteries put in cars are estimated to last 800-1000 cycles to 80% capacity[1].
Given these figures batteries add around 138g/kWh of CO2 on top of whatever source was used to charge them(say wind at 14g/kWh).
Meanwhile natural gas plants emit around 550g/kWh. The battery would have to last less than 250 cycles to match that.
[0] https://www.sciencedirect.com/science/article/pii/S136403211...
[1] https://electrek.co/2018/04/14/tesla-battery-degradation-dat...