Nowadays, the issue of saving energy to reduce CO 2 emissions is a matter of concern. To save energy, we can do the following things: select and use high efficiency electrical equipments; limited use of electricity during peak hours; turn off electrical equipment (lights, fans, ..) when not in use; using energy saving lamps; using solar panels to reduce the load on the electrical system. In addition, we need to increase advocacy so that people are aware of the importance of saving energy and self-implementing the energy saving.