Sony has provided a little tidbit of information about the PS5, in a statement detailing their improved effort to combat climate change.
In the statement (which you can read right here), Sony says that the next-generation PlayStation will use significantly less power than the PS4. They estimate that the PS5 will use 0.5 W of power when in rest mode. For comparison, the PS4 uses 10 W of power in rest mode and 0.3 W of power when completely turned off, so the PS5 will use only a tad more power when in rest mode than the PS4 does when it’s completely turned off.
“I am also very pleased to announce the next generation PlayStation console will include the possibility to suspend gameplay with much lower power consumption than PS4 (which we estimate can be achieved at around 0.5 W). If just one million users enable this feature, it would save equivalent to the average electricity use of 1,000 US homes.” said Sony President, Jim Ryan.