Morningstar will be exhibiting at the 26th annual MREA Fair in Custer, Wisconsin from June 19-21. Stop by Booth C1 to learn more about the recently launched TriStar MPPT 600V Controller with DC Transfer Switch that enables retrofitting existing grid-tied systems with battery backup. Also on display will be Morningstar’s complete line of charge controllers, off-grid inverters, and accessories for use in solar, wind, and hydro systems.