My first Prius modification installed a 1.1 kW, modified sine wave inverter on the 12 V battery to provide emergency house power. Along with a cabin NEMA 5-20 with ON/OFF switch, it gave terrific service from my 2003 Prius. This Weber U video goes over the 12 power distribution system: With an automatic, Generac, emergency generator, I have no need for a vehicle inverter beyond what is fed by a small, 150 W, auxiliary power plug. Bob Wilson
