The IQ System Controller 3 INT connects the home to grid power, the IQ Battery storage system, and solar PV. It provides microgrid interconnect device (MID) functionality by automatically detecting and seamlessly transitioning the home energy system from grid power to backup power in the event  of  a grid failure. It consolidates interconnection equipment and communication gateway into a single enclosure and streamlines grid independent capabilities of PV and storage installations by providing a consistent, pre-wired solution for residential applications.

IQ System Controller 3 INT, microgrid interconnect device (MID), production and consumption CTs, IQ Gateway, and Communication Kit. Streamlines grid-independent capabilities of PV and storage installations.

Enphase Energy, Inc. is an American energy technology company headquartered in Fremont, California , that develops and manufactures solar micro-inverters , battery energy storage , and EV charging stations primarily for residential customers. Enphase was established in 2006 and is the first company to successfully commercialize the solar micro-inverter, which converts the direct current (DC) power generated by a solar panel into grid-compatible alternating current (AC) for use or export. The company has shipped more than 48 million microinverters to 2.5 million solar systems in more than 140 countries.

Most solar photovoltaic systems use a central inverter, where the panels are connected together in a series creating a string, which delivers all the direct current (DC) power produced into the inverter for conversion into grid-compatible alternating current (AC). The major drawback to this approach is that the entire string’s output is limited by the output of the lowest-performing panel. Solar micro-inverters address this problem by converting the DC into AC in a small inverter placed behind each individual solar panel.

Enphase founder Martin Fornage discovered this issue when he saw the low performance of the central inverter for the solar array on his ranch. Fornage was looking for a new opportunity after the 2001 Telecoms crash and brought an idea to build micro-inverters to his former Cerent Corporation colleague, Raghu Belur, and they formed PVI Solutions. The two hired Paul Nahi to be CEO at the end of 2006 and the trio formed Enphase Energy, Inc. in early 2007. Enphase raised $6 million in private equity, and in 2008, released its first microinverter, the M175. Their second generation product, 2009’s M190, had sales of about 400,000 units in 2009 and early 2010. Enphase grew to 13% marketshare for residential systems by mid-2010.