One needs to conserve energy, or decrease our energy use, in order to preserve non-renewable resources and reduce our impact on the environment. According to the United States Environmental Protection Agency, the production of electricity in 2012 was the primary source of greenhouse gas emissions, ultimately contributing to dangerous global warming.
Another reason to conserve energy is one of personal finance. As well as depleting the planet's shared resources, the act of leaving lights on or driving instead of walking has a significant impact on one's personal financial resources.
There are a number of ways to conserve energy, such as walking, riding a bicycle or taking public transportation and purchasing products with minimal packaging to persuade manufacturers to produce less.