The Earth Institute of New York’s Columbia University conducted a survey and published their results on how clueless consumers are in regards to saving energy. The study noted that switching to more efficient technologies was more effective than behavior change, something few consumers realized.
In other words, switching the lights off will save very little energy. Making the right buying decisions when purchasing new appliances is far more cost-effective in the long run.
Households could reduce energy consumption by up to 30 percent by choosing energy efficient appliances.