Changing Energy Demand (IMAGE) University of Sussex Caption How energy use demands change through different milestones in life. Credit HOPE Project Usage Restrictions Only to be used in conjunction with relevant University of Sussex/HOPE Project research. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.