July 19, 2015
The TriStar MPPT 600V Controller with DC Transfer Switch, by Morningstar Corp., is an Electrical Energy Storage Award 2015 finalist for its application to retrofit existing grid-tied solar systems to enable battery backup power.
The high-voltage controller boasts a peak efficiency of 97.9% and allows homeowners, small businesses, and medical facilities to switch on critical backup power in the event of a utility power outage.
This retrofit application can be completed in less than a day, without making changes to photovoltaic (PV) arrays and without compromising efficiency in existing grid-tied systems.