Five hopeful signs global energy is getting cleaner

Earth's population is only growing. Can we rein in energy usage and greenhouse emissions while supporting more and more people?

3. More with less

Elaine Thompson/AP
Energy efficient LED lights illuminate the field as Los Angeles Angels play the Seattle Mariners at dusk in a baseball game in Seattle. Safeco Field is the first Major League stadium to light its playing field with LED lights.

A huge amount of energy produced worldwide is wasted through inefficiencies, and over the last decade countries in the developed world and beyond have made great strides toward using energy more wisely.

Eighteen developed countries – including the US, UK, and France – saved more energy through efficiency measures from 2001 and 2011 than China used in 2011, according to a 2014 IEA report and an analysis by Carbon Brief.

“Energy efficiency is the invisible powerhouse in IEA countries and beyond, working behind the scenes to improve our energy security, lower our energy bills and move us closer to reaching our climate goals,” IEA Executive Director Maria van der Hoeven said in 2014 when she unveiled the report.

Efficiency gains can come anywhere – from better household appliances, to lower speed limits on the highway.

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