Indonesia is using its stint as G20 president to push for more international funding for the green energy transition in developing nations — but analysts say Jakarta needs to back up its calls with more ambitious plans to cut emissions at home.

The world's top exporter of thermal coal and its eighth-biggest carbon emitter, Indonesia has made a sustainable energy transition one of three focuses for its maiden, yearlong presidency of the G20 group of the world's 20 largest economies.

The Southeast Asian nation plans to phase out coal for electricity by 2056 and has brought forward its net-zero emissions target from 2070 to 2060 or sooner — but weaning itself off the dirty, climate-heating fuel remains a challenge.