Tesla's new solar roof panels
Elon Musk unveiled Tesla’s new solar roof panels that the company hopes will revolutionize the way we use green power in the home. Also revealed was the new Powerwall 2.0 battery unit that now packs twice the energy storage. The solar roof tiles come in four distinct styles, and are transparent to solar but opaque when viewed from an angle. And they’re not just a fashion statement — the new tiles could become more efficient, durable and cost-effective than existing solar panel options.