JAKARTA, July 24 (Reuters) - Indonesia, the world's greatest 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 might increase biodiesel usage to up to 16 million kilolitres (KL) next year, the ministry stated, from 13 million KL approximated to be consumed in 2024.

"We hope the trials might be ended up in December, so that full implementation of B40 might be brought out in 2025," energy ministry senior official Eniya Listiani Dewi said in a statement on Tuesday.

The Indonesian Biofuel Producers Association (APROBI) said the market had the capability to meet 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 need more basic materials to fulfill B40 need," Ernest Gunawan, the secretary general of APROBI told Reuters on Wednesday.

The biodiesel industry would need 13.9 million metric lots of unrefined palm oil to produce 16 million KL biodiesel next year, from the approximated 11 million loads required this year, he included.

Indonesia's biggest palm oil association GAPKI stated a decrease in exports implied there would be enough basic materials to provide the B40 required for now.

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

Indonesia's palm oil output is approximated to reach 54.4 million tons in 2024, a 2.26% boost from in 2015, while exports are anticipated to decrease by 2.47% to 29.5 million heaps as domestic usage increased, driven by biodiesel required.

The ministry had actually checked the biodiesel, blended with 40% of palm oil, on a train for the very first time earlier this week, while preparing to check the B40 mix on farming machinery, power plants and in the shipping market, it stated. (Reporting by Bernadette Christina and Dewi Kurniawati