CODEWITHSUNDEEP
macosmonitoringhardwarepower-consumption
Walter
Walter

Reputation: 99

How to get power usage on a Mac

I'm trying to get the power usage (in watts) but I can't figure out how. I looked at pmset and IOKit but couldn't find anything about it. coconutBattery can calculate it for laptops using the MacOS internal power information.

Upvotes: 9

Views: 9424

Answers (4)

Cornelius Roemer
Cornelius Roemer

Reputation: 8386

This works even on mac Minis which don't have batteries:

$ sudo powermetrics | grep "Combined Power"

Combined Power (CPU + GPU + ANE): 17021 mW

You can get CPU/GPU/ANE split up with:

$ sudo powermetrics | grep " Power"

CPU Power: 16935 mW
GPU Power: 82 mW
ANE Power: 0 mW
Combined Power (CPU + GPU + ANE): 17017 mW

(results are real results from my M1 Mini)

Upvotes: 0

Asmus
Asmus

Reputation: 5257

You should use ioreg -n "AppleSmartBatteryManager" -r -l and from there it should be easy to calculate.

Upvotes: 2

stko
stko

Reputation: 593

If you only need this information for a laptop, call IOPMCopyBatteryInfo and look at the values for the kIOBatteryVoltageKey and kIOBatteryAmperageKey keys to compute the power usage.

Upvotes: 2

user7675
user7675

Reputation: 

/usr/sbin/system_profiler SPPowerDataType | grep Wattage

The utility also accepts an -xml flag; the specific key in the XML is sppower_ac_charger_watts.

Upvotes: 8

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