6kW 2-3 Bed Cottage
Here is an example design of an off-grid suitable for the average 2-3 bedroom cottage. The design is based up the “AC bus” system using the industry leading technologies of SMA and BYD.
What is the advantage of an “AC bus” system? Traditionally an off-grid system used solar panels in concert with a battery charger to charge the battery bank with an inverter then connected to the battery bank to produce electricity. This limited the system to the capacity of the battery system.
With an “AC bus” design the systems is able to supply both the capacity of both the battery inverter and the solar inverter simultaneously. It also means that the system is easily extended by the adding additional string inverters to the AC bus.