If you're looking for a no-fuss way to monitor real-time power consumption on your Ubuntu laptop, a new GNOME Shell extension makes it deliciously easy.

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Monitor real-time power consumption easily on Ubuntu laptops using the Power Tracker GNOME Shell extension. It provides a top-bar display of power usage in watts without needing a separate app or command line tools. While the extension doesn't offer detailed per-app tracking or extensive customization, it can help identify high power-consuming applications and make energy-conscious choices without obsessing over exact figures.

See Real-Time Power Consumption in Ubuntu’s Top Panel

Install Power Tracker in Ubuntu 24.04 LTS