JAKARTA, July 24 (Reuters) - Indonesia, the world's greatest palm oil producer, is evaluating fuel with a view to increasing to 40% from 35% the share of palm-oil mixed into biodiesel next year, the energy ministry said.

If carried out, the B40 required could increase biodiesel usage to as much as 16 million kilolitres (KL) next year, the ministry stated, from 13 million KL estimated to be consumed in 2024.

"We hope the trials might be finished in December, so that complete application of B40 could be carried out in 2025," energy ministry senior main Eniya Listiani Dewi said in a statement on Tuesday.

The Indonesian Biofuel Producers Association (APROBI) stated the industry had the capacity to satisfy B40 need, with set up capability anticipated to rise to 20 million KL every year next year from 18 million KL now.

"However we will require more raw products to meet B40 demand," Ernest Gunawan, the secretary general of APROBI told Reuters on Wednesday.

The biodiesel market would 13.9 million metric lots of unrefined palm oil to produce 16 million KL biodiesel next year, from the estimated 11 million lots needed this year, he included.

Indonesia's biggest palm oil association GAPKI said a decline in exports indicated there would be adequate basic materials to provide the B40 required in the meantime.

But the industry would require to evaluate "which one would be better", GAPKI chairman Eddy Martono said, referring to the possibility a boost in exports would make providing the domestic market less feasible.

Indonesia's palm oil output is approximated to reach 54.4 million heaps in 2024, a 2.26% increase from last year, while exports are anticipated to decrease by 2.47% to 29.5 million tons as domestic intake increased, driven by biodiesel required.

The ministry had checked the biodiesel, blended with 40% of palm oil, on a train for the first time previously today, while planning to evaluate the B40 mix on farming equipment, power plants and in the shipping market, it said. (Reporting by Bernadette Christina and Dewi Kurniawati; Writing by Stanley Widianto; Editing by John Mair, Savio D'Souza and Barbara Lewis)