He found out the console uses about 200W:
I am happy to report that the PS3 consumes no more than about 200W while folding, with a Power Factor of 0.99. This is the same peak we saw from it during gameplay. Considering that the PS3 accounts for about 65% of Folding@Home’s current TFLOPS, yet only 13% of the total active processors, this should be considered yet another bragging point for the PS3 as a folding unit.He also provides some figures to give you an idea how much it will cost you to let your PS3 fold 24/7, but this depends a lot on how much you pay for electricity ofcourse:
To give an idea of how much this might cost, my Watts-Up Pro estimates that the PS3 will consume about 138 KiloWatt Hours per month at this rate.
The price of electricity varies widely around the world, but here in Hong Kong, I pay about $0.12 USD per KWh (after my normal power usage is accounted for). So to keep the PS3 folding 24/7, I will be paying about $16.56 extra on my power bill each month. If I still lived in Vancouver, where they have an abundant amount of hydroelectric power, the cost per KWh is a paltry $0.053 USD. This would mean an extra $7.30 every month to have the PS3 folding 24/7.