Semi-offgrid. Using grid as a backup on AC2IN. 15kva lister hw2 (AC1IN) running on used engine oil to charge 4xUS500 . Quattro 10kva, RS450/200, 10.8kw Solar
, 500w hydro electric on ac1 out. Having to go DIY route living on a small island, no installer either knows sufficient to handle my unusual system or can be bothered. Steep learning curve with no prior electrical experience!