Retired. Career in Underwater survey and construction for Oil and Gas. Remote control submarines, GPS, survey and positioning.
Skilled electrical and mechanical but not to expert level.
Have a complete off grid system plus a grid connection. (I believe this is called Hybrid). 48v 686ah lead acid Hoppeke battery bank. Two solar arrays, a 2kw single axis tracking and a 5kW fixed. Charge batteries via 2 x Victron MPPT solar chargers. Inverter is a Victron Quattro 8kW. EV charger from Myenergi, its a zappi2. Have a couple of other much smaller arrays on the property to power remote lighting and workshop.