Meghan Smith, a student in Prof. Nat Fortune’s PHY100 course “Solar Energy and Sustainability,” recently compared the power draw of her laptop with and without having her power-management “sleep” settings configured to:
- Turn off the display after several minutes of inactivity, and
- Put the hard drive into standby mode after 30-60 minutes of inactivity
She measured a savings of 1.16 kWh per day, which translates to…
1.16 kWh/day * 250 days/year * 2600 students = 754,000 kWh. That’s worth more than $120,000!
For instructions on setting your own computer display to automatically switch to sleep mode (instead of a power-wasting screen saver) after a period of inactivity, see: http://www.smith.edu/its/estar/