Tesla is best known for its car business, which has put electric vehicles into the hands of hundreds of thousands of people, but it has also made a significant bet on solar power and energy storage. It acquired rooftop solar installer SolarCity in 2016 in a $2.6 billion deal and markets products including solar-integrated roof shingles, rooftop solar panels and battery-based home electricity storage.

https://www.washingtonpost.com/technology/2019/11/06/elon-musk-says-he-has-solution-californias-fire-related-blackouts-it-starts/