How much does a PS5 in rest mode cost per year? Standby power cost

Sony's PS5 ecodesign page publishes the power use of each mode. For the PS5 it lists 0.30 W in rest mode, and a footnote says the "low power use" rest mode setting is the default standby setting. With the setting that supplies power to the USB ports, the listed draw is 4.65 W. With Stay Connected to the Internet it's 0.84 W, and with every rest mode option on it's 4.71 W. The PS5 Pro has its own row on that page, so check the row for your model.

At $0.18/kWh the yearly cost is $0.47 for the default, $1.32 for staying connected and $7.33 for USB power. This page covers rest mode only, so the hours are 24 and the figure goes in at 100% utilization. Time spent playing is a separate cost.

Rest mode at the default setting costs under a dollar a year at $0.18/kWh, so it isn't worth switching off for the money. The rest mode options matter more than the mode itself. Powering the USB ports costs $6.86 more a year than the default, so turn that option on only if you charge controllers or other USB devices in rest mode.

In euros the default costs about €0.79 a year at €0.30/kWh, and USB power costs about €12.22.