Morningstar Corporation will be exhibiting at Booth #328 at Solar Power International (SPI) 2015 in Anaheim, California from September 15-17.  SPI is one of the fastest growing trade shows in the US and over 15,000 attendees will be able to see Morningstar’s recently launched TriStar MPPT 600V Controller with DC Transfer Switch for retrofitting grid-tied systems with battery backup.  Attendees will also be able to see the soon-to-be-launched Prostar MPPT controller in addition to Morningstar’s complete product line of existing controllers, inverters, and accessories.