CPU & energy
Energy Impact
A relative score of how much power an app is using right now.
What it is
Activity Monitor's Energy tab ranks apps by Energy Impact, a score that combines CPU use, wake-ups, network and other activity. Higher means more battery drain.
The 12 hr Power column shows the average over the last 12 hours, which is better for spotting the apps that drain your battery over a day.
Should you worry?
Look at apps that rank high in 12 hr Power even though you rarely use them.
What you can do
- Quit or update heavy apps.
- Turn off background features you don't need in those apps.