Meanwhile, SolarCity plans to offer integrated power-generating roofs in addition to the solar-power panels it has been installing on existing structures.
Neither company has yet become fully profitable, and the share prices for both companies trended downward in today’s trading. This week, Musk and other SolarCity executives reported that they purchased tens of millions of dollars worth of bonds issued by the company – a move that CNBC said stirred concerns among some industry observers.