Assess the state of current Power Supply Berry technology. Understand the market dynamics. Work with industry and users to develop and apply high-efficiency power supplies. Develop an action plan to transform the Power Supply Berry market to improve efficiency in all operating modes. Energy Savings Opportunity by Increasing Power Supply Berry Efficiency. Nearly 2.5 billion electrical products containing power supplies are currently in use in the United States, and about 400 to 500 million new power supplies (linear and switching) are sold in the U.S. each year. The total amount of electricity that flows through these power supplies is more than 207 billion kWh/year, or about 6% of the national electric bill. More efficient designs could save an expected 15 to 20% of that energy. Savings of 32 billion kWh/year would cut the annual national energy bill by $2.5 billion, displace the power output of seven large power plants, and reduce carbon dioxide emissions by more than 24 million tons per year..