[goodcanadian]

It depends. What kills the batteries is fast charging or discharging and to an extent, leaving them sitting around fully charged or discharged. If the batteries are retired to do grid storage (or home storage), I would expect the charge and discharge rates to be fairly sedate, and charge levels to be managed so as not to have the battery level too low or too high for very long. I can easily imagine the batteries lasting a long time under such conditions.

[minikites]

Space and weight are also much less of a concern. A stationary infrastructure battery with less than half its original capacity wouldn't be unusable the way it would be for a car.

[whimsicalism]

Industrial carbon capture coal electricity production is substantially more expensive than renewables or natgas at this point, no reason to turn to it.

e: hm, somehow my comment switched chains?

[FooBarBizBazz]

Natgas will need CCS too.

It plays well with renewables, in the role of peaker plants.

So I think coal is dead but fracking is here to stay.

Especially given that fracking also has a role in geothermal. It's an industrial capability that we'll want to keep.