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Regions planning massive hydrogen investments receive a lot of attention, but very little is given to hydrogen’s current state and potential in Southeast Asia. The region consists of 11 countries, is home to more than 680 million inhabitants,[1] has a combined GDP of around $4 trillion,[2] and accounts for about 5 percent of global primary energy demand.[3] The lack of attention on its hydrogen initiatives is not for lack of activity. A review of investment plans in hydrogen and its derivatives reveals that one country is particularly active in this region—Japan.
This article analyses Japan’s investments in the region and discusses how Japanese companies are not only investigating potential hydrogen imports from Southeast Asia but also exporting their technologies to develop low-carbon hydrogen and ammonia end-use.
Southeast Asia as a Hydrogen Supplier to Japan
Southeast Asia produces around 3 million metric tons of hydrogen, or 3 percent of global hydrogen production. It is mostly based on natural gas, given that the region’s largest hydrogen producers, such as Indonesia and Malaysia, are also major gas producers. In contrast to the many potential low-carbon hydrogen exporters that have published their strategies and publicized their objectives, such as Australia, Oman, Morocco, Namibia, or Chile, only one Southeast Asian country, Singapore, has published its hydrogen strategy.
Around half of the region’s projects or agreements announced publicly since 2020 originated from Japan (Table 1). However, most initiatives are still at the stage of memorandums of understanding and feasibility studies. Since the country is planning to import hydrogen, Japanese companies have been looking at various ways to transport hydrogen or its derivatives over long distances, using ammonia, liquid organic hydrogen carriers, liquid hydrogen, or e-methane.
Chiyoda and other Japanese companies have been testing the feasibility of using methylcyclohexane (MCH) as a hydrogen carrier from Brunei to refineries in Japan within the framework of the Advanced Hydrogen Energy Chain Association for Technology Development.[4] Additionally, Japanese petroleum company ENEOS is targeting final investment decision in 2023 on the first commercial-scale renewable hydrogen-to-MCH project in partnership with Malaysia’s Petronas that will supply hydrogen to ENOES’ refineries.[5]
Japanese companies have also signed agreements with Indonesian petrochemical company Panca Amara Utama[6] and with Malaysia’s Petronas to co-develop low-carbon ammonia and hydrogen production plants in Indonesia and Malaysia. These agreements aim at investigating ammonia and hydrogen production feasibility in each country, potentially as a first step in promoting exports to Japan. Meanwhile, Japanese expertise may also be used to transport renewable hydrogen or ammonia to Singapore.[7] Finally, Petronas is doing a feasibility study regarding transporting e-methane produced in Malaysia to Japan.[8]
There is, obviously, a difference between feasibility studies and concrete investments. Southeast Asia offers Japan the advantage of proximity and established relationships—between the region’s LNG champions and Japanese players—with potential to be active in hydrogen and ammonia. It remains to be seen whether hydrogen or its derivatives produced in Southeast Asia can be competitive against those produced elsewhere. According to the International Renewable Energy Agency, the region’s technical potential to produce renewable hydrogen at below $1.5 per kilogram by 2050 amounts to a mere 64 exajoules (EJ)—against 2,715 EJ in sub-Saharan Africa.[9] The region also boasts gas resources, which could be used to produce low-carbon hydrogen, provided that carbon capture and storage is developed as well. Hydrogen currently produced in some of these pilot projects uses unabated natural gas, and hence is not low-carbon hydrogen.
Japanese Technology Investments in Hydrogen and Ammonia Use in Southeast Asia
In addition to fulfilling domestic demand, Japanese companies are looking to earn revenues by supplying their technology abroad. Some are investing in hydrogen (or its derivatives) end-use in select Southeast Asian countries, focusing on the sectors in which they are investing in Japan, such as ammonia co-firing for power generation and the use of hydrogen in the power and transport sectors. These companies are also investing in decarbonizing local ammonia production. This is part of the Asia Energy Transition Initiative (AETI), launched in 2021 by the government of Japan,[10] and reinforced by the Green Transformation (GX) Basic Policy unveiled in December 2022. Through the Asia Zero Emissions Community (AZEC), Japan aims to support Asian countries facing similar issues as Japan in achieving carbon neutrality, through technologies such as hydrogen and ammonia, while recognizing their different circumstances.[11]
Companies such as JERA and IHI Corporation are at the frontlines of the development of co-firing ammonia in coal-fired power plants. They are testing a 20 percent co-firing ratio (ammonia replaces 20 percent of coal) at the Hekinan thermal plant, Japan’s largest coal-fired plant.[12] Japanese companies are implementing a similar strategy in some Southeast Asian countries, especially those with a significant—often, recent—coal fleet, some of which was financed by Japan. JERA is investigating the use of ammonia in Aboitiz’s coal-fired plants in the Philippines.[13] JERA Asia Pte. Ltd. and IHI Asia Pacific Pte. Ltd. plan to explore potential use of ammonia in Malaysia’s energy sector.[14] Mitsubishi Heavy Industry and PLN have started to investigate co-firing feasibility with hydrogen and ammonia in Indonesia.[15]
In Singapore, several projects are underway to test 100 percent ammonia direct combustion, hydrogen co-firing, as well as the potential use of ammonia for bunkering. Finally, MOL, Mitsubishi, and Chiyoda are cooperating with Thailand’s EGAT on the production and utilization of clean hydrogen and ammonia and supplying them to domestic and international markets.[16]
Prospects for Decarbonization
Japanese companies would likely prefer to keep coal-fired plants in Japan or Southeast Asia for longer by attempting to decarbonize them, to avoid having stranded assets. To accelerate decarbonization, the following actions may help. First, the hydrogen or ammonia must be certified low carbon. It’s just as important to not incentivize the continuation of coal-fired plants with no co-firing, or even build new ones, in the hope that they will be cleaner later. Additionally, the technical transition to burning 100 percent cleaner fuels—and not just 20 percent—in coal-fired plants should ideally happen in the early 2030s, ahead of the current goal of achieving this in the 2040s.[17] But a massive switch from coal-fired plants to ammonia might then create a problem of availability of this clean fuel, given the slow build-up of projects.[18] Finally, to decarbonize Southeast Asian economies, hydrogen or ammonia will also have to be affordable: according to the International Energy Agency, co-firing at 60 percent with ammonia at $250–$380 per metric ton would multiply the cost of Indonesian electricity three to four times.[19]
Photograph of Fukushima Hydrogen Energy Research Field courtesy of Toshiba Energy Systems & Solutions Corporation.
[12] JERA, “Signing Ammonia Sales and Purchase Agreement with Mitsui for the Large-Volume Co-firing of Fuel Ammonia in the Demonstration Project at Hekinan Thermal Power Station,” June 16, 2023, https://www.jera.co.jp/en/news/notice/20230616_1503.
[15] Mitsubishi Heavy Industry, “MHI and PLN Nusantara Power to Jointly Investigate Co-Firing with Hydrogen, Ammonia and Biomass in Indonesia’s Power Plants,” March 3, 2023, https://www.mhi.com/news/23032302.html.
[30] INPEX, “INPEX Extends MOU on LNG Supply to Indonesian Domestic Market and Incorporates Joint Studies in Hydrogen/ammonia and CCS for Abadi LNG Project, Masela Block, Indonesia,” September 27, 2022, https://www.inpex.co.jp/english/news/assets/pdf/20220927.pdf.
[40] MHI, “MHI and PLN Nusantara Power to Jointly Investigate Co-Firing with Hydrogen, Ammonia and Biomass in Indonesia’s Power Plants,” March 23, 2023, https://www.mhi.com/news/23032302.html.
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