Massive flows of finance are needed to accelerate renewable energy investments. More investment in renewables would reduce energy-related carbon emissions, a key element in efforts to limit global warming. The International Renewable Energy Agency (IRENA) and Climate Policy Initiative (CPI) have produced a concise, accessible summary of finance flows to renewables around the world. The study examines finance flows worldwide in 2013-2016, broken down by technology, financial instrument and region.