SolidEnergy is going to make its own batteries, so I meant why isn't Tesla buying their batteries instead of Panasonic's batteries? But my best guess is it has

SolidEnergy is going to make its own batteries, so I meant why isn't Tesla buying their batteries instead of Panasonic's batteries? But my best guess is it has something to do with price per Kwh being much higher or simply not being confident in SE's ability to scale up to 50GWh per year in the next 2-3 years, which is what Tesla is going to need for the Model 3.