An off-grid system is normally a standalone system in remote areas. Currently we have a lot of customers thatdo not want to use the utility. They want to generate their own power for their homes and businesses. Wenormally use the same system for grid-interactive. For big systems, such as 100kW and bigger, we normally use the quarto inverters from Victron. With these types of systems, normally a backup generator is connected to thesystem, to supply power, or charge the battery bank in the absence of quality sun.