Outdated systems drive global energy waste

Outdated equipment, poor habits, and weak energy management are fueling global energy waste.

Energy inefficiency continues to be a significant hurdle in the global sustainability effort, with two-thirds of energy consumed globally going to waste and energy use contributing to over 85% of carbon emissions.

Ashish Jindal, Senior Officer for India at Sustainable Energy for All (SEforALL), identified multiple causes behind this waste. “Many buildings and industries use old air conditioners, motor pumps that consume far more energy than the super efficient ones,” he said. Behavior also plays a role, with overcooling and poor maintenance adding to the inefficiency. “Without smart meter sensors, energy waste often goes unnoticed,” Jindal added.

Beyond infrastructure, transportation inefficiencies and transmission losses remain major issues. “Consumers have outdated grids and poor maintenance,” he said. “A lot of inefficiency happens.”

Ho Hiang Kwee, Adjunct Senior Research Fellow at the Energy Studies Institute, National University of Singapore, stressed the importance of distinguishing between inefficient use and unnecessary use of energy. “Energy efficiency can come from areas such as operational inefficiencies or using outdated equipment,” he said. “Not having a proper energy management process is also a major contributor.”

On solutions, Jindal pointed to simple behavioral changes and maintenance. “Setting AC temperature to 24 to 25 degrees celsius can increase energy efficiency by 6% per degree,” he said. He also cited India’s national LED bulb replacement initiative and the importance of regular maintenance, like cleaning AC filters, which can improve system efficiency by 10–15%.

Ho underscored the value of energy audits and leadership commitment. “A robust audit identifies where energy is being wasted,” he said. “Leadership needs to set appropriate goals and strategies for energy management practices.”