1) First of all! It is important to save energy: turn off the lights when we do not need; elektoropribory off when we do not use them already, try to do as much daylight as possible (of course, in our country it is very difficult because of the short daylight, but in the summer it is easy to implement).
Laptops consume less energy than PCs.
2) Shoot elektoropribory to charge when they have sufficient charge. Our mobile phones, laptops, etc. continue to consume energy on the charge, even if the battery is already fully charged.