The Department of Energy announced May 31 that it finalized new energy efficiency standards for microwave ovens. The standards, to be implemented in 2016, will reduce the energy consumed in standby mode by both non-convection and convection-based microwave ovens by 75 percent and 51 percent, respectively. These changes will save consumers $3 billion in energy costs by 2030 and prevent 38 million tons of CO2 emissions over the next 30 years.