Solar roof tile shingles are a real technology. And unlike Telsa Solar, which mostly buys it's cells from China, market leaders (in terms of technology) like Meyer-Burgers will present similar products this year. https://www.pv-magazine.com/2021/07/29/meyer-burger-plans-to... those will be able to be installed by any roofer and are compliant with German safety standards and are much more robust then Tesla Solars models.