Tesla is now bundling together its solar panel products and the Powerwall battery storage device, meaning you can only purchase both of them together. Starting next week, the Tesla website will let potential customers know that the only way to get the Tesla Solar Panels and Solar Roof is to purchase them with the Powerwall battery.

Elon has said Tesla will be able to unlock more capabilities down the line.

Solar power will feed exclusively to Powerwall. Powerwall will interface only between utility meter & house main breaker panel, enabling super simple install & seamless whole house backup during utility dropouts.

— Elon Musk (@elonmusk) April 22, 2021