View energy consumption in Activity Monitor on Mac
Use the Energy pane of the Activity Monitor window to see the energy use of your Mac. You can monitor overall energy use and see details about the energy use of each app.
In the Activity Monitor app
on your Mac, click Energy.To display more columns, choose View > Columns, then choose the columns you want to show.
The energy use of individual apps and their processes is displayed in the upper part of the Activity Monitor window.
Energy Impact: A relative measure of the current energy consumption of the app (lower is better).
12hr Power: The average energy impact of the app in the last 12 hours, or since the Mac computer started (lower is better). This column only appears on Mac laptops.
App Nap: Whether App Nap is active for this app.
Graphics Card: Whether the app requires a high performance graphics card. This column only appears on Mac computers with one or more graphics cards.
Preventing Sleep: Whether this app is preventing your Mac from going to sleep.
User: The username running the process.
The bottom of the window shows information about your overall energy use. If you have a Mac laptop, you see additional information related to its battery.
Mac computers with one or more graphics cards
Graphics Card (Multiple graphics cards): The type of graphics card being used, if there are multiple graphics cards installed. Higher–performance cards require more energy.
Mac laptops
Remaining charge: The percentage of battery charge remaining.
Time until full (plugged in): The amount of time your Mac must be plugged into an AC power outlet until the battery is fully charged.
Time on AC (plugged in): Time elapsed since your Mac was plugged into an AC power outlet.
Time remaining (unplugged): The estimated amount of battery time remaining. If your battery is fully charged, this field says Battery Is Charged.
Time on battery (unplugged): The amount of time that’s elapsed since your Mac was plugged into an AC outlet.
Battery (Last 12 hours): The battery charge level over the last 12 hours.