Global investment in renewable power was more than double the amount spent on new coal and natural gas-fired power generation in 2015, the Renewables Global Status report found.
Overall spending on green energy rose five per cent from 2014 to USD 286 billion, beating the previous record set in 2011.
China opened its coffers the widest, accounting for more than a third of total investment worldwide, while India, South Africa, Mexico and Chile also significantly increased spending.
"Renewables are now established around the world as mainstream sources of energy," the report said.
"New markets for both centralised and distributed renewable energy are emerging in all regions."
Wind and solar power were the biggest winners, with more than half of the money committed to renewables in 2015 spent on harnessing the sun's energy, according to the report.
But investment in other types of renewable energy, such as biofuels and hydropower, fell while the use of alternative fuels in transport continued to lag behind other areas, the report found.
"Policy makers need to remove barriers that are preventing the increased share of renewables in heating and cooling and transport," said the report.
"Policy makers should think on a long-term basis in order to increase investment in clean energy and advance the energy transition in their countries.
