[patrakov]

Not only good off-grid solar setups are expensive, but installers also cut every corner possible and impossible in order to drive the cost down no matter whether the result is safe. For example, they will sell you an inverter with a step-approximated "sine wave" output if you don't ask otherwise, and will connect it to the battery directly, bypassing the controller that protects it from too much discharge, because that controller is not powerful enough.