AB About this app What the tool does, who it is for, and the engineering behind the numbers. …id solar system inverter, battery and PV array from three things: the split of your total load , the running time of each load, and the backup time you need. Who it is for Any hybrid installation from a 1 kW single room… About HT How to use the tool A four-step walk-through, from picking a scenario to sharing the report. …tep 2 the loads Work through the categories and set three things for each appliance: How many units there are. Hours per day it actually runs. Backup priority Essential, Important or Comfort. The priority is the most imp… Help HS Help & support Common questions, and how to reach a person. …to 1 MW of inverter output and 5 MWh of storage . Beyond that, either split the site into sub systems, reduce the backup window, move loads to a lower tier, or hand the job to an engineer for a proper design. An administ… Help BM Bill of materials How cable, protection, structure and accessories are derived from the sizing. …end clamps. Per MPPT input combiner boxes. Per inverter DC isolator, AC breaker, surge arrester, monitoring. Per battery module interconnects and BMS comms leads. Per kW of AC output the AC cable run. Per system one off… Help

ABC DC:AC ratio PV array kWp divided by inverter AC kW. Ratios of 1.1 to 1.4 are normal; higher ratios clip the midday peak but raise total yield. Glossary ABC Backup window How long the system must keep the chosen loads running with no grid. Together with the load split, this is what sets the battery size. Glossary

W Split AC 1.5 ton (inverter) 1,500 W · typically 8 h/day · Cooling & heating Add to a sizing W Split AC 2.0 ton (inverter) 2,000 W · typically 8 h/day · Cooling & heating Add to a sizing W Split AC 1.0 ton (fixed speed) 1,200 W · typically 6 h/day · Cooling & heating Add to a sizing W Split AC 1.5 ton (fixed speed) 1,800 W · typically 6 h/day · Cooling & heating Add to a sizing W Split AC 2.0 ton (fixed speed) 2,400 W · typically 6 h/day · Cooling & heating Add to a sizing