They briefly outline that in the Experimental Setup section:
The power consumption is measured by using the
INA219 power monitor IC from Texas Instruments. For the
Raspberry Pi and the Intel Joule the INA219 is attached to
the power line and then the power is measured before and
while performing the inference and the difference is taken as
the power required for performing the inferences. For the NCS,
the INA219 is attached to the USB connection directly. The
inference time is measured by using the system clock.
Thanks for pointing out the article though, I was looking for something like this.
