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

If implemented, the B40 mandate might consumption to as much as 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 completed in December, so that full implementation of B40 could be performed in 2025," energy ministry senior official Eniya Listiani Dewi stated in a statement on Tuesday.

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

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

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

Indonesia's greatest palm oil association GAPKI said a decrease in exports indicated there would be sufficient basic materials to supply the B40 mandate for now.

But the market would require to assess "which one would be better", GAPKI chairman Eddy Martono said, describing the possibility a boost in exports would make supplying the domestic market less viable.

Indonesia's palm oil output is estimated to reach 54.4 million heaps in 2024, a 2.26% boost from last year, while exports are expected to decrease by 2.47% to 29.5 million loads as domestic usage rose, driven by biodiesel required.

The ministry had tested the biodiesel, combined with 40% of palm oil, on a train for the very first time earlier today, while preparing to test the B40 mix on farming equipment, power plants and in the shipping market, it said. (Reporting by Bernadette Christina and Dewi Kurniawati