JAKARTA, July 24 (Reuters) - Indonesia, the world's most significant 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 implemented, the B40 mandate could increase biodiesel intake to as much as 16 million kilolitres (KL) next year, the ministry said, from 13 million KL approximated to be consumed in 2024.

"We hope the trials could be ended up in December, so that complete implementation of B40 could 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 industry had the capacity to fulfill B40 need, with set up capacity expected to rise to 20 million KL each year next year from 18 million KL now.

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

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

Indonesia's greatest palm oil association GAPKI said a in exports meant there would suffice basic materials to provide the B40 mandate for now.

But the market would need to examine "which one would be better", GAPKI chairman Eddy Martono stated, describing the possibility a boost in exports would make providing the domestic market less viable.

Indonesia's palm oil output is estimated to reach 54.4 million loads in 2024, a 2.26% increase from in 2015, while exports are expected to decline by 2.47% to 29.5 million heaps as domestic consumption increased, driven by biodiesel mandate.

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