18. Adopt LEDs
In case you didn't know, energy-efficient lights could consume more energy then you could imagine. Asides from the mass energy-consuming, they heat up fast and brings more problems for the environment. Now, the arrival of LEDs could be the solution to this. First, they are cheaper than the old models and even produce more light. Furthermore, they also use up 75% less energy and more durable. According to experts, LEDs could last 25 times longer than the standard lights. If you want to be eco-friendly and save money, do consider installing LEDs.