Global investment in energy efficiency continued to grow in 2016, increasing by 9% to $231 billion. The rate of growth was strongest in China at 24%, though Europe is still responsible for the largest share of global investment.
Among end-use sectors, buildings still dominate energy efficiency investment, accounting for 58% of the world total in 2016, with most investment in that sector going to building envelopes, appliances and lighting.
Source: Energy Efficiency 2017
5 October 2017