Many people assume that since LED bulbs use very little electricity, leaving them on continuously can save power.
However, research by the US Department of Energy shows this is not entirely true.
It is generally best to turn off lights when leaving a room to save electricity and reduce your monthly bill.
There are some exceptions. If you plan to return within 10–15 minutes, leaving the light on is acceptable, as frequently switching bulbs on and off can slightly increase energy use and reduce their lifespan.
However, if you will be away for a longer period, turning the light off not only cuts electricity consumption but also extends the life of the bulb.
Another major source of wasted electricity is devices that remain plugged in but unused, such as TVs, chargers, microwaves, and computers.
Even when switched off, these devices draw small amounts of power, known as “vampire energy” or standby power.
In the US, households spend $100–$200 annually due to standby power.
In Pakistan, this could amount to thousands or even lakhs of rupees, with about 10% of a household’s electricity lost this way.
By turning off lights when leaving a room, unplugging unused devices, and using smart power strips, households can significantly reduce their electricity bills and save energy.