An official of the Department of Science and Technology (DOST) on Monday urged large buildings and government buildings to use cloud-based monitors and electronic sensors (e-sensors) to monitor their energy consumption. “These are tools that would enable large buildings and government buildings to track their energy consumption and figure out the aspects where they waste energy,” DOST Undersecretary Rowena Guevara said in a public briefing. Amid the rising oil prices, Guevera said the first line of defense is minimizing energy consumption. “If we do not understand how we consume energy, we cannot lower it or we cannot conserve it. Thus