In summary, the EPA estimates that external power supply efficiency regulations implemented over the past decade have reduced energy consumption by 32 billion kilowatts, saving $2.5 billion annually and reducing CO₂ emissions by more than 24 million tons per year. Beyond the mandated government regulations, many OEMs are now starting to demand “greener” power supplies as a way to differentiate their end-products, driving efficiencies continually higher. In late 2014, CUI Inc began introducing DoE Level VI compliant adapters that now range from 3 W to 150 W. Recently, the company has further qualified the majority of its Level VI line to also conform to the more stringent CoC Tier 2 standards. Moving forward, CUI will continue to implement the latest energy saving technologies into its external power supplies in order to comply with current and future standards as the regulatory landscape continues to evolve.