In the past few years, global spending on green energy has been increasing. Now environmentalists say that 2015 was the best year for renewable sources of energy in terms of both investment and building.
According to a study by renewables policy organisation REN21, last year more than twice as much money was spent on solar, wind and hydropower energy, than on coal and gas-fired power generation.
Total world investment in renewables reached around 290 billion dollars in 2015. The report adds that some 150 gigawatts of renewable power capacity was added to global sources, the most ever built in a single year. With a surge in pollution and global warming blamed on overuse of fossil fuels, many countries have begun using eco-friendly energy.
"The renewables train is barrelling down the tracks, but it's running on 20th century infrastructure - a system based on outdated thinking where conventional baseload is generated by fossil fuels and nuclear power," said Arthouros Zervos, chair of REN21.
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