Let’s add in the cost of batteries as their own thing

I don’t know if this is a fair thing to do. Yes, we could charge it from any other source, but we aren’t (intentionally) overgenerating power from sources like coal, gas, etc. Thus, the need for implementing that storage largely depends on renewables.

I also feel like factoring out the costs of storage implementation leaves more gaps for combustion generation supporters to criticize renewables. I would rather be honest about the upfront costs and instead emphasize the long term benefits of renewables, both in cost and cleanliness.