Thailand Green Hydrogen and Ammonia 2027 Market Intelligence

Operator playbooks

PTT Public Company (SET: PTT) is the lead Thai champion across the visible green H2 and NH3 stack. PTT is signatory to the November 2022 USD 7 billion ACWA Power MoU (target 225,000 tonnes per year H2, 1.2 million tonnes per year green ammonia in southern Thailand), the 2024 PTTGC-MHI low-carbon petrochemical study, the EGAT-MHI co-firing pilot (with PTT-supplied natural gas as baseline fuel), the July 2025 GIZ-thyssenkrupp Uhde southern-Thailand PtX partnership, and the PTT-OR-Toyota-BIG hydrogen fuelling station pilot in Bang Lamung. PTT group strategic position: convert legacy natural-gas asset value into blue, then green pathways while booking JV optionality with Saudi (ACWA Power), Japanese (MHI), and German (thyssenkrupp, GIZ) capital. Risk: feasibility studies stall on the cost gap; PTT books impairments before FID.

Electricity Generating Authority of Thailand (EGAT, state-owned) is the lead generator participant. EGAT signed the November 2022 ACWA Power-PTT MoU as a third party, signed the June 2024 MHI 20% hydrogen co-firing MoU (initial feasibility by March 2025), is developing a national hydrogen supply chain strategy covering transport, storage, distribution, and is the natural-monopoly buyer for any domestic H2 or NH3 co-firing output. EGAT strategic position: maintain dispatch-control monopoly while transitioning thermal fleet to low-carbon fuels; manage stranded-asset risk in legacy gas-fired plants. Risk: PDP 2024 revision does not promulgate co-firing tariffs, leaving EGAT pilots without commercial pathway.

PTT Global Chemical (SET: PTTGC, PTT subsidiary) hosts the most concrete petrochemical pilot. PTTGC and MHI signed a four-year (2024-2028) MoU to study low-carbon hydrogen and ammonia gas-turbine fuels at the Rayong petrochemical complex, alongside CCUS and steam methane reforming. The complex is the largest single industrial energy load in Thailand; conversion is structurally consequential. PTTGC strategic position: substitute grey-SMR feedstock with blue or green H2 to defend export-product carbon intensity for EU, Japan, Korea customers. Risk: study deliverables in 2027-2028 fall short of FID; CCUS storage capacity in Gulf of Thailand remains unproven.

Gulf Energy Development (SET: GULF) and Global Power Synergy (SET: GPSC) are the listed IPPs with the renewable-power backbone any electrolysis project requires. GULF is the largest Thai IPP and one of the fastest renewable scalers (solar, wind, BESS portfolio). GPSC is the PTT-group power arm with active hydrogen storage and power-to-X R&D programmes. Neither has signed a dedicated green H2 MoU at scale; both are positioning for future captive-electrolysis demand as renewable LCOE drops. Strategic position: arbitrage curtailed renewable power into stored H2 or NH3 for dispatchable load-shifting; sell capacity into eventual co-firing tariff.

Bangchak Corporation (SET: BCP) is the most progressed refiner on alternative fuels, with a 1 million litres per day SAF unit operational at Phra Khanong from 2025 and mandatory 1% SAF blending in Thai jet fuel from January 2026. Bangchak's pathway to green H2 runs through SAF process-hydrogen substitution (current HEFA refining uses grey-SMR H2; green-H2 substitution lifts the carbon credit and SAF premium). Strategic position: extend SAF first-mover advantage into hydrogen-supplied refining; future ammonia exposure via shipping-fuel adjacency. Risk: SAF mandate ramp slips; HEFA-feedstock used-cooking-oil supply tightens.

Energy Absolute (SET: EA) is the listed renewable IPP and Amita Technology battery gigafactory operator (1 GWh per year in the EEC). EA has no announced green H2 project at scale, but is a plausible pilot host given its EEC footprint, renewable curtailment headroom, and existing BOI relationship. Strategic position: H2-from-curtailed-RE pilot could anchor an integrated renewable-battery-H2 storage offering. Risk: EA balance sheet stretched across EV bus, battery, biodiesel, solar; capital not available for new sectors without partner.

Blue vs green pathway analysis

Thai authorities have not formally chosen between blue hydrogen (SMR plus CCUS) and green hydrogen (electrolysis from renewable power). Both are named in PDP 2024 transition narratives. The economic and political logic favours a transitional blue pathway over a 2027-2032 horizon, with green scaling thereafter. Blue rationale: PTT operates the Erawan, Bongkot and other Gulf-of-Thailand gas fields plus the SMR-capable petrochemical complex at Rayong; converting existing SMR output to blue via CCUS preserves asset value, leverages existing pipeline and storage infrastructure, and produces H2 at approximately USD 2.5-3.5 per kg vs green USD 5-7 per kg. CCUS storage in depleted Gulf of Thailand gas reservoirs is geologically promising but commercially unproven.

Green rationale: Thailand has structural solar resource (PDP 2024 targets 17-19 GW solar by 2037), declining electrolyser CAPEX (below USD 300 per kW projected by 2030 per BloombergNEF), and no domestic CCUS regulatory framework yet. Export-market carbon-intensity scrutiny (EU CBAM, Japan METI CfD eligibility, Korea ammonia co-firing) prefers green over blue. The PTT-ACWA Power MoU and GIZ-thyssenkrupp partnership are both explicitly green-pathway. The most likely 2027-2030 outcome is parallel-track: blue at Rayong petrochemical complex for domestic captive use, green in southern Thailand for export to Japan, Korea, and IMO bunkering.