The World Energy Council’s definition of energy sustainability is based on three core dimensions: energy security, energy equity, and environmental sustainability.
The Energy Trilemma Index ranks the energy performance of 125 countries worldwide in terms of their ability to provide a secure, affordable, and environmentally sustainable energy system. In addition, countries are awarded a balance score that highlights how well the country manages the trade-offs between the three energy trilemma dimensions and identifies top performing countries with a triple-A score.
This year Denmark, Switzerland and Sweden top the index, with Denmark also achieving the highest score for energy security.