By Nina Chestney
LONDON (Reuters) - Global carbon dioxide (CO2) emissions from the power sector fell by 2% last year, the biggest fall since at least 1990, owing to reduced coal usage in Europe and the United States, a study showed on Monday.
Coal-fired power generation fell by 3% globally, also the largest fall since 1990, research by independent climate think tank Ember showed. The drop in Europe was 24%, driven by a switch to renewables, while U.S. coal-fired generation was down 16% because of more competitive gas.
However, China bucked the trend with a rise as it became responsible for half of global coal-fired power generation.
Overall, the decline in coal use last year and shift towards renewables was helped by factors such as cheap gas, nuclear plant restarts in Japan and South Korea and slowing electricity demand, the report said.
Coal generation needs to fall by 11% a year to keep within a warming limit of 1.5 degrees Celsius.
"The global decline of coal and power sector emissions is good news for the climate, but governments have to dramatically accelerate the electricity transition so that global coal generation collapses throughout the 2020s," said Dave Jones, lead author of the report and electricity analyst at Ember.
"To switch from coal into gas is just swapping one fossil fuel for another," he added.
Wind and solar power generation rose by 270 terrawatt hours, or 15%, last year. That growth rate would need to be maintained every year to achieve climate goals under the Paris Agreement.
The report examined data covering 85% of the world's electricity generation and used informed estimates for the remaining 15%.
Last month the International Energy Agency said that global CO2 emissions from power production flattened last year as growth of renewable energy and fuel switching from coal to natural gas led to lower emissions from advanced economies.
