Instead of installing solar panels on top of roofs, why don’t we just construct rooftops made out of solar panels? During SolarCity’s latest earnings call, Elon Musk unveiled that his company is developing a “solar roof” that would utilize every inch of space to produce energy for the home below it. Musk didn’t reveal too many details but did say it will be a part of a ramp-up in production around the second quarter of 2017.