In a recent update, Microsoft has introduced a notable feature in Windows 11 24H2: the Energy Saver. This new functionality distinguishes itself from the traditional Battery Saver by allowing users to activate it even when their PC is plugged into a power source. This flexibility marks a significant evolution in power management for Windows users.
Battery Saver, a staple in Windows 10 and earlier versions of Windows 11, is designed to kick in automatically when the battery level dips below 20%. It aims to conserve energy by reducing power consumption during critical moments. However, its activation is limited to scenarios when the device is not connected to a power outlet.
Differences between Battery Saver and Energy Saver in Windows 11
| Feature | Battery Saver | Energy Saver |
|---|---|---|
| Windows Version | Windows 10, Windows 11 24H1 and earlier | Windows 11 24H2 and later |
| Activation | Automatic below a certain percentage (default 20%) or manual | Manual via Quick Settings or automatic below a certain percentage; can be always on when plugged in |
| Power Mode Control | Users can change power mode | Users cannot change power mode when on |
| Display Brightness | Reduced by 30%, user-configurable | Reduced by 30%, user-configurable |
| OEM Display Brightness Control | Configurable via ESBRIGHTNESS SUB_ENERGYSAVER setting | Configurable via ESBRIGHTNESS SUB_ENERGYSAVER setting |
| Transparency Effects | Not affected | Disabled |
| App Syncing | Microsoft Store Mail, People, Calendar apps do not sync | On low battery, OneNote, OneDrive, Phone Link may not sync |
| Background Apps | Most blocked, except certain categories like VOIP | Most blocked, except certain categories like VOIP |
| Windows Updates | Non-critical updates blocked, scans still occur | Non-critical updates blocked, scans still occur |
| Telemetry | Most blocked, only critical uploaded | Most blocked, only critical uploaded |
| Task Scheduler | Tasks run only if:
|
Tasks run only if:
|
As highlighted in the comparative analysis, both the Battery Saver and Energy Saver features are designed to limit background applications and sync activities for select Microsoft apps, thereby optimizing power usage. However, the Energy Saver stands out by providing users with greater control over its activation, regardless of whether the device is charging.
While the Energy Saver reduces screen brightness by 30% and disables transparency effects, it does come with a caveat: users cannot modify the power mode settings while the feature is enabled. To switch between Performance, Battery, or Energy-efficient modes, users must first deactivate the Energy Saver, as these options will be greyed out during its operation.
In summary, the Energy Saver feature not only enhances user control but also represents a progressive step in power management within Windows 11. Alongside this new feature, the latest update also integrates the power profiles from the control panel into the Windows Settings, further streamlining user experience and accessibility.
