Windows Operating Systems offer a host of power-saving options for the purpose of Green Computing. These are actual software settings as opposed to habits (such as switching off devices that are not in use).
In this post:
Settings

- Settings » System
- Power & sleep
- Screen
- Computer
- Additional settings
Power Plans
A selection of default Power Plans is available. These plans can be customised to your needs. The plans prioritise Maximum Performance over Maximum Power Saving or vice versa. This is especially important when your goal is to conserve the battery life of your laptop.
Windows 10 Advanced Power settings
These settings offer detailed, technical options for conserving power:

- Hard disk
- Turn off hard disk after
- Internet Explorer
- JavaScript Timer Frequency
- Desktop background settings
- Slide show
- Wireless Adapter settings
- Power Saving Mode
- Sleep
- Sleep after
- Allow hybrid sleep
- Hibernate after
- Allow wake timers
- USB settings
- USB selective suspend setting
- Intel® Graphics Settings
- Intel® Graphics Power Plan
- PCI Express
- Link State Power Manage
- Processor power management
- Minimum processor state
- System cooling policy
- Maximum processor state
- Display
- Turn off display after
- Multimedia settings
- When sharing media
- Video playback quality bias
- When playing video
- Battery
- Critical battery notification
- Critical battery action
- Low battery level
- Low battery notification
- Low battery action
- Reserve battery level