1. Solid state batteries. Likely to be expensive, but promise better energy density.
2. Some really good grid storage battery. Likely made with iron or molten salt or something like that. Dirt cheap, but horrible energy density.
3. Continued Lithium ion battery improvements, e.g. cheaper, more durable etc.
[1] https://newatlas.com/energy/worlds-largest-flow-battery-grid...
1. Solid state batteries. Likely to be expensive, but promise better energy density.
2. Some really good grid storage battery. Likely made with iron or molten salt or something like that. Dirt cheap, but horrible energy density.
3. Continued Lithium ion battery improvements, e.g. cheaper, more durable etc.