How to Change Keyboard Backlight Brightness in Energy Saver Mode in Windows 11
Windows 11 lets you change your keyboard backlight brightness even when Energy Saver mode is on.
The keyboard backlight dimming setting in Windows 11 decides how dim your keyboard lights get when Energy Saver is active. This helps save battery power.
When you turn on “Lower keyboard brightness when using energy saver,” your keyboard lights will dim to 70% brightness automatically when Energy Saver is active.
You can set the brightness anywhere from 0% (off) to 100% (full brightness). This means you get full control to make your keyboard visible just how you like it while also saving battery.
Change keyboard backlight brightness in Windows 11 Energy Saver mode by editing the Registry Editor. Navigate to 🗝️HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Lighting\Backlight, find or create BacklightEnergySaverMultiplier, and set its value to your desired percentage (0-100).
How to Change Keyboard Backlight Brightness in Energy Saver Mode
To make this change, you’ll need to use the Windows Registry Editor (a tool for modifying Windows settings). This tool lets you change settings deep within Windows.
Step 1Open Registry Editor
First, open the Registry Editor. Search for “regedit” in the Windows search bar and press Enter.
Step 2Go to the Correct Location
Next, locate a specific folder within the Registry Editor. Click through the folders in the left-hand panel until you arrive at this path:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Lighting\Backlight
Step 3Find and Change the Setting
In the right-hand panel, look for a value named BacklightEnergySaverMultiplier. Double-click it to change its settings.
If the value isn’t present, you’ll need to create it. Right-click an empty space in the right panel, then select New > DWORD (32-bit) Value (this is a type of setting). Name it BacklightEnergySaverMultiplier and press Enter.
Step 4Set Your Desired Brightness Percentage
To set how bright your keyboard lights should be in Energy Saver mode, enter a number between 0 and 100 in a new window.
The default setting is 70.

Click OK when you are done.
Step 5Close Registry Editor
The Registry Editor window can now be closed.
And that’s it!
Reference:
Summary
Your keyboard backlight brightness in Windows 11’s Energy Saver mode can be changed by adjusting a setting in the Registry Editor.
How to change energy saver settings on 🪟 Windows 11?
Select Start > Settings > System > Power & battery. Under Power mode, choose the option you want for Plugged in or On Battery: Best power efficiency – Saves battery life. Balanced – Balances performance and battery. Best performance – Maximizes performance.
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Richard
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Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.
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