Changing Energy Demand (image) University of Sussex Share Print E-Mail 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. Share Print E-Mail 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.