DVD vs. Video Streaming: Which Wastes More Energy?EPOCH Times, June 6, 2014
Americans can save enough power to run 200,000 households a year by streaming videos with efficient devices instead of driving to the store to buy or rent DVDs.
Researchers studied five different ways of viewing movies and, using a systematic method called life cycle analysis, estimated the energy used and carbon dioxide emissions produced for each. They determined that video streaming can be more energy efficient and emit less carbon dioxide than the use of DVDs, depending on the DVD viewing method.
“End-user devices are responsible for the majority of energy use with both video streaming and DVD viewing,” says Eric Masanet, associate professor of mechanical engineering and of chemical and biological engineering at Northwestern University.