That is assuming all batteries are lithium-ion, but the state is going for a larger mix of storage tech.

As just one example, iron-air batteries:

> The CEC is supporting this project through its Long Duration Energy Storage (LDES) program, a fund dedicated to accelerating the implementation of non-lithium technologies offering 8+ hours of energy storage. Form Energy will use the grant funds to develop and operate the project, and PG&E will provide land and an interconnection point at the substation site.

https://formenergy.com/form-energy-awarded-30m-grant-from-th...

Stationary storage is a different ballgame, with different trade-offs

i.e. you can trade density for cycle count or cost