Tesla is changing the way it sells its solar roof and solar panels. According to Tesla Technoking and Imperator of Mars (check his Twitter bio) Elon Musk, the company will only sell its solar products bundled with its Powerwall battery starting next week. Starting next week, Tesla Solar Panels & Solar Roof will only be sold as an integrated product *with* Tesla Powerwall battery — Elon Musk (@elonmusk) April 22, 2021 According to Musk, solar power from Tesla's solar roof and panels "will feed exclusively to Powerwall.