Energy Efficiency 2021 is the IEA’s annual update on global developments in energy efficiency. This year’s edition explores recent trends in energy efficiency markets at the economy-wide and sectoral levels, including developments in policy and investment. The report also focuses on the role...

Energy Efficiency 2020 is the latest edition of the IEA’s annual update on global developments in energy efficiency. Through analysis of energy data, policies and technology trends, it provides a comprehensive view of energy efficiency trends worldwide. Energy efficiency plays an essential...

When William Shakespeare wrote Love’s Labour’s Lost he would have used light from tallow candles at a cost (today) of £12,000 per million-lumen hours. The same amount of light from electric lamps now costs only £2! But today’s low-cost illumination still has a dark side. Globally,...