[eithed]

Invest in batteries

Edit: I mean focus solely on. It's a boring technology prone to disruption, used everywhere

[jqpabc123]

Tesla has nothing obvious here to add to the marketplace --- most of their battery tech has typically been out sourced.

Lots of other companies with far more experience and expertice is battery research, development and manufacturing.

[nomel]

They're seem to be, with their factories and utility-scale systems: https://www.tesla.com/megapack

[QuantumSeed]

Preferably, solid state