Environmental Groups in the U.S. filed a lawsuit against the U.S. Department of Energy (DOE) for challenging the recent rollback of energy-saving light bulb standard. In September 2019, the Trump’s administration withdrew the Obama’s decision in 2017 which added additional light bulb types to the lighting efficiency standard. By doing so, it is analyzed by American Council for an Energy-Efficient Economy (ACEEE) that the U.S. consumer will spend US$ 15 billion on electricity annually and the environmental impact will be intensified with more carbo...