Dive Summary:
- According to the U.S. Environmental Protection Agency, 30-35 billion kilowatt-hours of electricity are consumed by exit signs every year in the United States alone.
- Annual energy costs for exit signs are as high as $2-3 billion.
- Although individual exit signs require a relatively small amount of electricity, their collective use contributes to high energy costs because they are almost never turned off.
From the article:
Exit signs are so ubiquitous that they're almost invisible. Every public building has them. In fact, they are so common that, taken together, these little signs consume a surprisingly large amount of energy. ...
