Don’t forget to factor in that in a 12 volt inverter system that the cable costs can be much higher and inverter efficiency much lower. If you’re not in a rush save up, and look for deals and methods. The fact that you’re on this forum is an excellent start.After all that, I have had to revert to plan A. It's not financially feasible to go the 48v route. Thank you to all who have helped me. I shall now ask some questions on a new thread regarding 12v feeling a bit pissed off. Ah well. Another day another dollar poorer!