We are also increasingly seeing batteries as part of PV fields, charged directly with DC from the PV, where they share the same inverters and grid connection, reducing overall cost.
Any projects that include battery costs are not competitive at all with fossil fuels unless you price in externalities that people don’t pay for right now. There are no proposals on the table to make them pay for that either.
The "running the numbers" you refer to very likely is a scam argument that requires batteries be used as the only storage mode. This can be much more expensive than properly engineered 100% renewable solutions, especially at higher latitude.
lol, after selecting a state it suggests a hydrogen electrolyzer and 22GWh of hydrogen storage. I hope you realize how dumb it is to think that would be achievable in 2030 (< 6 years from now).
This is a baldfaced lie. Batteries + e-fuels, coupled with predictable decline in cost of these with demonstrated experience effects, will enable 100% renewable energy at a cost competitive with current fossil fuels.