It is possible to get estimates of the wattage a specific device/process is using with PowerTOP. In order to get estimates of the amount of power that is being used, rather than just the % of wakeups from specific processes, it is important to first calibrate powertop.
sudo powertop --calibrate
This takes time as it performs various tests whiles switching different devices on and off. You must not touch the machine during calibration. When calibration is done it will start PowerTOP as normal. Now you must leave PowerTOP running to allow it to gather data. After approximately an hour, power estimations will begin appearing in the first column.