Humm.. 67v / 75 ohms = 0.893 amps.. About 60 watts..
I wonder if I could use a 75 ohm resistor for my hot water heating plate.?.
Digi-Key - WFH230L75RJ-ND (Manufacturer - WFH230L75RJ)
It would be nice to keep the part count down..
I've been reading up on PVHW testing and it looks pretty promising.
BFRL: Solar Photovoltaic Hot Water System