THIS PROJECT WILL DEVELOP A NEW 70 KW GRID-TIED INVERTER WITH DIRECT CURRENT (DC) BATTERY INTERFACE, INTENDED FOR THREE-PHASE SOLAR INSTALLATIONS IN SMALL TO MEDIUM SIZE COMMERCIAL APPLICATIONS. BREK ELECTRONICS INC. HAS DEMONSTRATED A PROOF-OF-CONCEPT THREE-PHASE INVERTER AND A DC-DC CONVERTER USING ITS REVOLUTIONARY COMPOSITE CONVERTER TECHNOLOGY BASED ON HIGH-FREQUENCY SILICON CARBIDE (SIC) DEVICES AND SMALL LOW-COST PLANAR MAGNETICS. THE PROPOSED PROJECT WILL DEVELOP A TRL-6 (BETA) PROTOTYPE THAT IS ENGINEERED FROM THE GROUND UP FOR U.S. MANUFACTURING.