I still think if we could have car charging stations at work and then go home and plug our cars into our houses to power them at night we could smooth the solar energy demand cycle and have dual-use batteries for transportation and solar storage.

Tl;Dr

Batteries.

https://archive.is/2025.04.21-110453/https://www.vox.com/climate/408381/energy-transition-renewables-grid-scale-energy-storage-giant-batteries

Paywalled