Saying that grid storage "only has a few hours of capacity" is like saying that a nuclear power reactor "only has 1GW of power." You solve both issues by deploying more. And if you want a longer lithium ion battery installation without the additional power capacity, you can save a bit on inverters.

Grid storage is cheap enough that Texas, a purely profit-driven grid is now overtaking California in the amount of battery storage deployed. 58GWh of new grid storage was added in 2025 alone, and the growth is still exponentialhttps://seia.org/news/united-states-installs-58-gwh-of-new-e...