Before proceeding further, do note that this new feature is currently available only to the Windows Insider build 21364 or higher version on the Dev channel. It should be available for the stable version pretty soon.
Step 1: Open Task Manager on your Windows 10 computer. For this, press CTRL + SHIFT + ESC keys on your keyboard.
Step 2: Under the Status tab, you will see apps that have Eco Mode enabled.
If you want to enable this feature for a particular application, right-click on it, and from the options, select “Eco mode.”
Step 3: Once you click on the option to enable the feature, you will get a pop-up window and click “Turn on Eco Mode” to confirm.
That’s it. You have now enabled Eco Mode for the application on your Windows 10 computer. It could help with your device’s battery life as well as thermal performance issues. If you have used this feature, do share your experience.