Ive been off-grid for about 24 years now. We have around 5kWs of PV (solar). Im an electrical engineer by background. If Id had my time again Id have got a large grid feed system & a Tesla type power system & small efficient generator. Owning a Tesla is a challenge for our system and I rely on SCs and a local If Homer Chardemo. If Homer wishes I could visit on my next trip to Syd to check his house for energy usage.