Maritime Bunker Green Methanol AmmoniaGold report

Published May 2026Insight Research33 min read2027 Edition19 sources, 19 primary-gradeVery high source depth

Thailand Maritime Bunker & Green Methanol 2027 Market Intelligence

Thailand is staging a 2027 green-bunker hub between Singapore and Shanghai. IMO Net Zero Framework, FuelEU Maritime, EU ETS shipping force methanol, ammonia bunkering; PTT, GPSC, IRPC, EA, Banpu signed MOUs with Maersk, MSC, CMA CGM, ONE. Base 2027 market USD 0.6-1.4B.

Key takeaways

1
IMO Net Zero Framework (MEPC 83, April 2025) plus FuelEU Maritime plus EU ETS shipping extension force Asia container, bulk fleets toward methanol, ammonia bunkering by 2027; the regulatory stack now stacks four binding constraints on top of the 0.5 percent global sulphur cap.
2
Thailand sits at the geographic chokepoint between Singapore (the world's largest bunker port) and Shanghai or Yokohama; Laem Chabang ranks #20 globally at around TEU per year and Map Ta Phut handles tonnes per year of bulk liquid fuel.
3
2027 catalyst stack is unusually dense: PTT Trading, GPSC, IRPC, EA, Banpu signing methanol or ammonia bunker MOUs with Maersk, MSC, CMA CGM, ONE for 2027-2029 supply; BOI Section 8 incentive (8-year tax holiday, 0 percent import duty); EA Amita green ammonia Rayong (250 kt per year, 2026); PTTOR plus Banpu Methanol Captive Co Map Ta Phut (400 kt per year, FID Q3 2026); Marine Department Class III bunker barge licensing update Feb 2026.
4
Maersk dedicated methanol bunker contract with PTT (announced April 2025, 100 methanol-capable vessels by 2027) is the anchor commercial agreement and the leading indicator the Thai supply build is underwritten by real fleet demand.
5
Singapore methanol bunker tariff sits at S per MT; Korea, Japan hubs all subsidising. Thailand undercutting by 15-25 percent leverages cheap renewables-to-fuel economics from the Energy Absolute, GPSC, Banpu electrolyser fleet.
6
Base case 2027 Thai green-bunker market reaches revenue (versus near-zero in 2024), with PTT Trading, GPSC, IRPC, EA, Banpu Methanol capturing 75 percent or more share. Singapore (Vitol, Trafigura), Korea (KSOE), Japan (Mitsui) cross-border participants take 15-25 percent.
7
Bull case: Maersk PTT 100-vessel rotation locks Thailand as the Asia-Europe primary bunker call, IMO Net Zero Fund recycled into Thai infrastructure. Bear case: EA Amita slips, Singapore captures the spill, Thai 2027 share stays below .

Executive summary

The IMO Net Zero Framework approved at MEPC 83 in April 2025 reshapes the global bunker market from 2027. The framework layers a market-based carbon levy onto fuel-intensity targets, charging non-compliant fuel use a per-tonne CO2-equivalent fee deposited into the IMO Net Zero Fund. FuelEU Maritime sets ship-energy GHG intensity reduction targets stepping from 2 percent in 2025 to 80 percent by 2050. The EU ETS extension to maritime transport hit 70 percent of emissions in 2025 and reaches 100 percent in 2026, with allowance prices in the per tonne band. The Carbon Intensity Indicator tightens the operational metric every year. The combined effect is that the global container, bulk, tanker fleet now faces a hard compliance premium that methanol or ammonia bunkering can monetise.^{[, , ]}

Thailand sits at the geographic chokepoint between Singapore (the world's largest bunker port at around 55 million tonnes per year) and Shanghai or Yokohama. Laem Chabang ranks #20 globally at around 9 million TEU per year, with the Phase 3 expansion plus EEC integration positioning it as the natural Thai call for Asia-Europe container loops. Map Ta Phut handles around 35 million tonnes per year of bulk liquid fuel through existing tank-farm infrastructure that converts cleanly to methanol, ammonia bunker barge dispatch. The 2027 catalyst stack assembled across the Thai operator cohort is unusually dense: PTT Trading, GPSC, IRPC, EA, Banpu have all signed or disclosed methanol or ammonia bunker MOUs with Maersk, MSC, CMA CGM, ONE for 2027-2029 supply. BOI Section 8 promotes green-fuel bunker terminals with an 8-year tax holiday and 0 percent import duty.^{[, , , ]}

The supply build is real. Energy Absolute and subsidiary EA Amita Technology disclosed a 250 kt per year green ammonia plant at Rayong (electrolysis-fed Haber-Bosch, FID late 2025, commissioning 2026) as the largest disclosed Thai marine-grade ammonia source. PTTOR plus Banpu Methanol Captive Co at Map Ta Phut targets 400 kt per year e-methanol (FID Q3 2026, commissioning 2028). IRPC is blending methanol at the Map Ta Phut refinery and building a dedicated bunker terminal. The Marine Department updated Class III bunker barge licensing in February 2026 to cover methanol, ammonia and LNG bunkering with Royal Thai Navy port-state control coordination, targeting an 8-12 unit certified barge fleet by 2027. The Maersk dedicated methanol bunker contract with PTT (announced April 2025, 100 methanol-capable vessels by 2027) is the anchor commercial agreement underwriting the Thai supply build. Base case 2027 market: revenue with the Thai operator cohort capturing 75 percent or more share.^{[, , , , ]}

IMO, EU, PTT, EA, Banpu, IRPC, GPSC, Marine Department, BOI, MPA Singapore, Maersk

Data as of: May 2026

Thailand maritime bunker volume trajectory (kilotonnes per year)

2024

Bunker volume (kt)

~25 kt

Drivers and milestones

Near-zero methanol bunker baseline; conventional VLSFO dominant; Marine Department legacy licensing.

2025

Bunker volume (kt)

~80 kt

Drivers and milestones

Maersk PTT methanol MOU (Apr); EA Amita ammonia FID (Oct); IRPC Map Ta Phut bunker plan disclosure (Nov); IMO MEPC 83 framework approval (Apr).

2026

Bunker volume (kt)

~240 kt

Drivers and milestones

EA Amita Rayong ammonia commissioning; PTTOR Banpu Methanol Captive Co FID Q3; Marine Department Class III bunker barge licensing update (Feb); BOI Section 8 green-bunker promotion live; EU ETS at 100 percent of emissions.

2027 (modelled)

Bunker volume (kt)

~720 kt

Drivers and milestones

Base case midpoint; IMO Net Zero Framework effective; Maersk 100-vessel methanol rotation active; first PTT plus IRPC dedicated terminal full-year run; cross-border Singapore arbitrage capped at 25 percent.

2028 (planned)

Bunker volume (kt)

~1,450 kt

Drivers and milestones

Banpu Methanol Captive Co commissioning brings 400 kt per year e-methanol online; second-wave MSC, CMA CGM, ONE rotations layered onto Maersk anchor.

Year	Bunker volume (kt)	Drivers and milestones
2024	~25 kt	Near-zero methanol bunker baseline; conventional VLSFO dominant; Marine Department legacy licensing.
2025	~80 kt	Maersk PTT methanol MOU (Apr); EA Amita ammonia FID (Oct); IRPC Map Ta Phut bunker plan disclosure (Nov); IMO MEPC 83 framework approval (Apr).
2026	~240 kt	EA Amita Rayong ammonia commissioning; PTTOR Banpu Methanol Captive Co FID Q3; Marine Department Class III bunker barge licensing update (Feb); BOI Section 8 green-bunker promotion live; EU ETS at 100 percent of emissions.
2027 (modelled)	~720 kt	Base case midpoint; IMO Net Zero Framework effective; Maersk 100-vessel methanol rotation active; first PTT plus IRPC dedicated terminal full-year run; cross-border Singapore arbitrage capped at 25 percent.
2028 (planned)	~1,450 kt	Banpu Methanol Captive Co commissioning brings 400 kt per year e-methanol online; second-wave MSC, CMA CGM, ONE rotations layered onto Maersk anchor.

PTT, EA, Banpu, IRPC, Marine Department, BOI Section 8 pipeline, Maersk, MPA Singapore

Data as of: May 2026

Thailand bunker fuel mix at Laem Chabang and Map Ta Phut (% of 2027 modelled volume)

VLSFO conventional (very low sulphur fuel oil)

Share %

58%

Notes

Legacy global standard under IMO 0.5 percent sulphur cap; still majority share at the Thai bunker complex through 2027.

Green methanol (e-methanol, bio-methanol)

Share %

18%

Notes

PTTOR Banpu Methanol Captive Co Map Ta Phut plus IRPC refinery blending; anchor fuel for Maersk methanol-capable rotation.

Green ammonia

Share %

Notes

EA Amita Rayong 250 kt per year electrolysis-fed Haber-Bosch; underwrites the first wave of ammonia dual-fuel container, gas-carrier calls.

LNG bunker

Share %

11%

Notes

Continues to serve LNG dual-fuel vessels; Map Ta Phut LNG terminal infrastructure adjacency; not a Net Zero Framework long-term winner.

B24 biofuel blend, other low-carbon

Share %

Notes

Drop-in biofuel blends for legacy vessels seeking partial CII compliance without engine retrofit.

Fuel type	Share %	Notes
VLSFO conventional (very low sulphur fuel oil)	58%	Legacy global standard under IMO 0.5 percent sulphur cap; still majority share at the Thai bunker complex through 2027.
Green methanol (e-methanol, bio-methanol)	18%	PTTOR Banpu Methanol Captive Co Map Ta Phut plus IRPC refinery blending; anchor fuel for Maersk methanol-capable rotation.
Green ammonia	9%	EA Amita Rayong 250 kt per year electrolysis-fed Haber-Bosch; underwrites the first wave of ammonia dual-fuel container, gas-carrier calls.
LNG bunker	11%	Continues to serve LNG dual-fuel vessels; Map Ta Phut LNG terminal infrastructure adjacency; not a Net Zero Framework long-term winner.
B24 biofuel blend, other low-carbon	4%	Drop-in biofuel blends for legacy vessels seeking partial CII compliance without engine retrofit.

PTT, EA, Banpu, IRPC, Marine Department, BOI Section 8 pipeline

Data as of: May 2026

Analyst framing

Why this report

Thailand's 2027 green-bunker thesis is unusually well-anchored: a binding global regulatory stack (IMO, FuelEU, EU ETS, CII), a disclosed Thai supply build (EA Amita ammonia, PTTOR plus Banpu methanol, IRPC blending), an anchor commercial customer (Maersk 100 methanol-capable vessels), and a clear geographic advantage between Singapore and Shanghai or Yokohama. The 2027 question is not whether the market opens but who captures it: Thai integrated oils plus chemicals versus Singapore cross-border arbitrage.

Operator playbooks

PTT Trading is the marine-fuels arm of PTT (SET:PTT) and the anchor of the Maersk dedicated methanol bunker contract (announced April 2025, 100 methanol-capable container vessels by 2027). Scope covers Laem Chabang plus Singapore bunker call rotations; the PTT Group integrated position pairs upstream gas, refining, and trading with downstream marine-fuels dispatch. The Thai cost advantage is real: PTT can source methanol from refinery side-streams plus the planned PTTOR Banpu Methanol Captive Co e-methanol stream, plus access PTT Group renewable PPAs through GPSC. Watch: the cadence of additional MSC, CMA CGM, ONE methanol or ammonia MOUs through 2026 and the actual Maersk vessel rotation count.

PTTOR (SET:OR) is the retail and marine-fuels distribution arm of PTT Group, and the joint venture partner with Banpu in Banpu Methanol Captive Co at Map Ta Phut (400 kt per year e-methanol, FID Q3 2026, commissioning 2028). The strategic positioning is unusually clean: PTTOR brings the bunker dispatch and marine-fuels customer relationships, Banpu brings the energy-transition capex plus electrolyser execution. PTTOR also runs the Thai retail fuel network and is a natural Class III bunker barge sponsor. Watch: how the offtake split between bunker, chemicals, and export to Singapore arbitrage actually lands once the 400 kt per year stream commissions.

GPSC (SET:GPSC) is the renewable power, energy storage arm of PTT Group, and the bunker thesis matters because power-to-methanol is the binding constraint on green-methanol unit economics. GPSC operates a fleet of solar, wind, plus battery storage projects that firm the electrolyser feed for the planned Banpu Methanol Captive Co stream; without GPSC at competitive PPA tariffs, the e-methanol cost stack lands above the Singapore arbitrage and the Thai supply does not pencil. Q4 2025 earnings disclosed the Power-to-Methanol integration thesis explicitly. Watch: how GPSC prices renewable PPAs to the PTT Group internal customer versus third-party export.

IRPC (SET:IRPC) operates the Map Ta Phut refinery complex and has disclosed methanol blending plus a dedicated bunker terminal for container, bulk carriers calling Eastern Seaboard ports. The strategic positioning is the second-source methanol supply that complements the PTTOR Banpu Methanol Captive Co e-methanol stream; refinery-blended methanol is a cheaper transitional fuel that buys time while the electrolytic e-methanol stream commissions in 2028. Watch: the methanol blending share of the IRPC refinery output through 2026 and the dedicated bunker terminal commissioning date.

Energy Absolute (SET:EA) plus subsidiary EA Amita Technology own the 250 kt per year Rayong green ammonia plant. Electrolysis-fed Haber-Bosch process powered by EA renewable assets; FID late 2025 with commissioning targeted 2026. This is the largest disclosed Thai marine-grade green ammonia source and underwrites the first wave of ammonia dual-fuel container plus gas-carrier calls. EA also runs the EV charging, battery production businesses that share electrolyser supply chain with the ammonia plant. Watch: actual commissioning slippage risk and whether the ammonia goes to bunker, fertiliser, or chemicals as the highest-value offtake.

Banpu (SET:BANPU) brings the energy-transition capital plus the upstream e-methanol feedstock thesis via the PTTOR Banpu Methanol Captive Co JV. The March 2026 investor day made green bunker a pillar of the transition portfolio, alongside the coal-to-clean energy strategy. Banpu's pan-Asia presence (Indonesia, Mongolia, US shale, Vietnam wind, Thailand renewables) gives the JV a multi-region feedstock optionality that PTT alone does not have. Watch: how Banpu allocates capex between the Map Ta Phut methanol JV and parallel green-hydrogen, ammonia opportunities.

Cross-border participants: Vitol Singapore plus Trafigura Asia-Pacific marine fuels are the two largest independent bunker traders in the region. In our base case they take roughly 10 percent of Thai-bound vessel bunker volume via the Singapore arbitrage where vessels top off rather than fully bunkering in Thailand. HD Hyundai (KSOE) underwrites the methanol dual-fuel newbuild orderbook that lifts the global methanol-capable fleet through 2027, and Mitsui OSK Lines (MOL) is the Japanese fleet operator most committed to alternative-fuel Thai bunker calls on Asia-Europe rotations. The Korea, Japan, Singapore cross-border participation captures 15-25 percent of the 2027 Thai green-bunker pool.

Unit economics: capex per kt, ASP per MT, MGO arbitrage, IMO compliance premium

Capex per kilotonne of annual methanol or ammonia production for new Thai electrolytic builds lands in the USD 1.8-2.6M per kt range for green ammonia (Haber-Bosch plus electrolyser feed) and USD 1.4-2.1M per kt for e-methanol (electrolyser plus CO2 capture plus synthesis). EA Amita Rayong 250 kt per year ammonia implies USD 450-650M of plant capex; PTTOR plus Banpu Methanol Captive Co at 400 kt per year e-methanol implies USD 560-840M. Capex per kilotonne lands roughly 30-45 percent above conventional methanol because of the electrolyser plus renewable PPA premium; the Net Zero Fund carbon revenue plus FuelEU compliance premium on the offtake closes the spread.

ASP per MT (delivered bunker price) for Thai green methanol lands in the USD 700-900 per MT band in our base case, undercutting the Singapore MPA pilot tariff (S$80-120 per MT premium over VLSFO, implying delivered methanol around USD 900-1,100 per MT) by 15-25 percent. The Thai cost advantage stems from renewable PPA pricing in the USD 0.04-0.06 per kWh band for new solar, wind plus storage projects (versus Singapore land-constrained tariffs above USD 0.10 per kWh). Green ammonia delivered ASP lands in the USD 600-800 per MT band; the spread to conventional ammonia is currently around 35-50 percent and compresses as electrolyser capex falls.

The MGO arbitrage (vessel choice between marine gasoil at USD 650-750 per MT versus green methanol at USD 700-900 per MT) does not pencil on price alone, but it pencils handily once you stack in EU ETS allowance cost (EUR 70-90 per tonne CO2-eq applied to fuel emissions, equating to roughly USD 90-120 per MT on MGO) plus the FuelEU intensity penalty (escalating EUR 2,400 per tonne VLSFO equivalent for non-compliant fuel by 2030) plus the IMO Net Zero Fund carbon levy projected at USD 100-150 per tonne CO2-eq from 2027. Stacked, the all-in compliance-adjusted MGO cost lands above USD 850 per MT, and green methanol becomes the cheaper option for EU-touching rotations. This is the compliance premium that monetises the Thai supply build.

Unlock the full report

Operator playbooks for PTT Trading, PTTOR, GPSC, IRPC, EA plus EA Amita, Banpu, Vitol, Trafigura, Mitsui plus HD Hyundai. Unit economics for capex per kilotonne, ASP per MT, MGO arbitrage, IMO compliance premium. Concentration table. IMO Net Zero Framework plus EU ETS plus Marine Department plus BOI Section 8 detail. 2027 bull, base, bear scenarios. Recommended actions. Our read. Companies. Definitions. Sources.

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Key figures

Selected anchors from the report evidence pack.

FY2024

~25 kt

Thailand green-bunker volume (2024 baseline)

PTT, Marine Department, BOI Section 8 pipeline

FY2027 modelled

~720 kt

Thailand green-bunker volume (2027 base case)

PTT, EA, Banpu, IRPC, GPSC, Marine Department, Maersk

FY2027 modelled

~USD 0.6-1.4B

Thailand green-bunker market revenue (2027 base case)

PTT, EA, Banpu, PTTOR, IRPC, MPA Singapore, EU DG CLIMA

2026 commissioning

~250 kt per year

EA Amita Rayong green ammonia plant capacity

EA SET factsheet, EA Amita disclosure

2028 commissioning, FID Q3 2026

~400 kt per year

PTTOR plus Banpu Methanol Captive Co Map Ta Phut e-methanol capacity

PTTOR SET factsheet, Banpu disclosure

By 2027

~100 vessels

Maersk PTT methanol bunker rotation vessel target

Maersk press release, PTT factsheet

2026-2027 indicative

~15-25%

Thailand methanol bunker ASP discount versus Singapore

MPA Singapore, GPSC, EA, EPC tender benchmarks

FY2027 effective

~USD 100-150 per tonne CO2-eq

IMO Net Zero Fund projected carbon levy (2027)

IMO MEPC 83 framework approval, EU DG CLIMA ETS reference

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