Light bulb energy-efficiency requirements in the last decade caused a shift away from traditional incandescent bulbs to more efficient alternatives.
As a result of the changes, electricity demand in American homes has decreased, saving consumers money and cutting greenhouse gas emissions. The savings are expected to grow as more highly efficient and increasingly inexpensive LED bulbs replace older lights
Energy efficiency advocates worry the Trump administration may slow the lighting revolution since the Department of Energy said it would withdraw a regulation that nearly doubled the number of light bulbs subject to energy-efficiency requirements.
Read more about the light bulb revolution in the U.S. and its impacts of energy efficiency at The New York Times.