Project record

ACME Duqm green-ammonia CBM export terminal

Four yellow offshore mooring buoys and buoy control equipment assembled at a UAE yard for the Bluewater Oman CBM green-ammonia package

Straatman; exact Bluewater Oman green-ammonia CBM equipment

ACME's Phase 1 plant at Duqm is designed to export refrigerated green ammonia through a four-buoy Conventional Buoy Mooring. Engineers India Limited holds the offshore engineering consultancy, Bluewater the CBM agreement and Straatman the delivered and pre-commissioned control package. An industry source identifies Masirah Marine as the most likely selected installation contractor. The attribution is plausible but unconfirmed: Masirah publishes relevant Oman-based buoy, anchoring, pipeline, diving, survey and construction-barge capabilities, yet its project list does not name ACME, Bluewater or Duqm. Bluewater's project announcement describes its ACME scope as CBM delivery, while its wider company literature records a history of delivering and installing CBM systems. Masirah could therefore hold the full offshore installation package or a narrower marine-construction and diving subcontract. The operating spread is also incomplete in public sources. Masirah lists twin-screw tugs rather than ASD or anchor-handling vessels, and an Imodco/SBM Offshore Oman study calls for two ASD tugs during Khareef connection operations. Offshore mobilisation, the tug provider and accepted first transfer remain undisclosed.

Project signal

Construction in Oman

Current status Phase 1 plant construction and CBM equipment delivery are active. Masirah Marine is the reported installation lead; its contract, vessel allocation and ASD-tug support remain undisclosed Source confidence Confirmed

Location

Oman / Middle East

Segment

Deep-water ports and energy terminals

Status

Phase 1 plant construction and CBM equipment delivery are active. Masirah Marine is the reported installation lead; its contract, vessel allocation and ASD-tug support remain undisclosed / Confirmed

Last checked

13 August 2026

Coverage

Related sectors

Deep-water ports and energy terminals is the primary work classification. Related sectors connect this record to adjacent marine delivery and market coverage.

Subject index

Related subjects

These subject pages bring together related projects, technical articles, reports, and evidence methods.

Project anatomy

Contract scope and delivery roles

Client / authority
Green Hydrogen and Chemicals SPC (GHC), described by Oman Ministry of Energy and Minerals as owned by ACME; some project records use GHC SAOC
Delivery parties
CleanTech Solutions LLC, Oman - ACME group EPC contractor named in project engineering documents, ACME Cleantech Solutions Pvt Ltd, India - engineering-service contractor named in project engineering documents, thyssenkrupp Uhde India - design consultant named in project engineering documents, Engineers India Limited - INR 61 million consultancy for engineering services on the offshore portion of the jettyless green-ammonia transfer system, awarded September 2024 with March 2027 scheduled completion, Bluewater Energy Services - contracted CBM system supplier, Straatman - mooring, buoy-control, hydraulic-release, navigation-aid and telemetry package supplier to Bluewater, Resinex - project-level participant confirmed by Straatman's sales director; exact buoy or flotation scope and contract boundary not publicly disclosed, APT Global Marine and Offshore Engineering - Ras Al Khaimah yard visible in exact project imagery, indicating fabrication or integration support; contract scope and offshore role not publicly disclosed, Masirah Marine / Masirah International Technical and Marine Services LLC - identified by an industry source as the most likely selected CBM installation contractor; official records show relevant Oman SPM, buoy, anchor, chain, pipeline, diving, survey and marine-plant capability, but no public project-specific award confirms the role, COWI - earlier jettyless floating-terminal technical-evaluation partner, KBR - ammonia technology licence, engineering, proprietary equipment, catalyst and commissioning services, ITC Oman - Phase 1 plant civil-construction contractor; no published marine CBM scope, AL ANAS Promising Projects LLC - official company portfolio lists the plant access road and the 300 MTPD Phase 1 green-ammonia project; exact contract value and wider scope are unpublished, Shuangliang Hydrogen - 16 alkaline hydrogen-production systems totalling 80 MW, officially delivered on 3 March 2026, Sungrow Hydrogen - multiple 1000 Nm3/h alkaline units under a 320 MW equipment agreement; 160 MW of equipment reported shipped in March 2026, Arctech - 175 MWp SkyLine II single-axis solar-tracker supplier for Phase 1, Khimji Ramdas Shipping - port, clearance, heavy-haul and site-delivery logistics for 14 oversized plant packages, including one 120-tonne piece, BGD Value Contractor - green-ammonia tank-foundation construction, reported through company and project-team posts; no published marine CBM scope, Towell Engineering Group / United Industrial Services Co LLC (UNISCO) - plant-tank construction and DM-water tank hydrotest preparation, reported by a project-team member; no published marine CBM scope, Endress+Hauser India and Cryogenic OGS - liquid-ammonia custody-transfer metering skid client and fabricator relationship reported by a Cryogenic OGS project engineer; exact commercial boundary remains uncorroborated, Frick India Limited - project document names the supplier for differential-pressure gauges in the ammonia-storage tank package, Gulf Testing Lab - completed onshore soil investigation, bathymetric survey and land-tomography geophysical survey for GHC, Darkocean Geostar UAE - completed offshore geotechnical fieldwork covering boreholes, CPT, pipeline routes and marine anchor points; oceanographic data collection subsequently in progress
Contract route
Owner-led multi-package delivery through the ACME-owned GHC project vehicle and ACME group EPC and engineering entities. Plant-side packages name Shuangliang and Sungrow as electrolyser suppliers, Arctech as solar-tracker supplier, Khimji Ramdas Shipping as project-logistics contractor and Frick India as an ammonia-storage instrumentation supplier. AL ANAS's official portfolio reports the plant access-road role. Project-team disclosures identify BGD on the ammonia-tank foundation, Towell Engineering/UNISCO on plant-tank work and Cryogenic OGS with Endress+Hauser India on the custody-transfer skid; those remain Reported attributions. Scatec's planned 50/50 development partnership ended in 2023 and its retained second-phase option does not establish a current Phase 1 role. ACME awarded EIL the offshore engineering consultancy and placed the CBM system agreement with Bluewater. Straatman is Bluewater's control-package supplier; Resinex participation and the APT Global yard setting are documented without complete commercial boundaries. An industry source points to Masirah Marine as the most likely installer, while Bluewater's own installation capability leaves the main-contract and subcontract boundary unresolved. The two ASD tugs required for Khareef connection work remain a separate, undisclosed charter or subcontract interface.
Execution window
ACME says Phase 1 construction started in June 2024, reached financial close in July 2024 and targets first green-ammonia production in H1 2027. Khimji Ramdas delivered 14 oversized plant packages to site in July 2025. Straatman confirmed CBM control-package delivery and pre-commissioning on 12 February 2026. Shuangliang officially delivered 16 systems totalling 80 MW on 3 March, and Sungrow reported a separate 160 MW shipment later that month. A Towell Engineering/UNISCO project-team post showed water filling of the approximately 3,178 m3 DM-water tank in July 2026 in preparation for hydrotesting. EIL's INR 61 million offshore engineering-services assignment remains scheduled through March 2027. Exact project imagery shows the four-buoy package at APT Global's Ras Al Khaimah yard; mobilisation to Duqm, offshore installation and operational acceptance remain unconfirmed.
Works package
Provide the jettyless refrigerated-ammonia export interface at Duqm. EIL's public contract title confirms engineering services for the offshore portion but does not publish its detailed deliverables. The confirmed mooring package comprises four offshore buoys, eight GMH-100 hydraulic release hooks in total, solar power, navigation lights, a foghorn, controls for the hydraulic power unit, subsea valves and transmitters, a portable telemetry unit and a redundant SHF mesh communications network. Public sources leave anchors and chains, floating and submarine hoses, PLEM and ESDV equipment, export pipeline and shore crossing, installation vessels, tugs and marine acceptance testing unallocated.
Marine interfaces
The ammonia storage and refrigeration system, export pipeline, subsea isolation, PLEM and hose string, four-buoy spread, tanker mooring operations and Yara vessel interface must function as one safety-critical export system. Survey control, anchor installation, pipeline and hose installation, telemetry and ESDV integration, navigation-aid commissioning, emergency-release testing, tug and pilot procedures, tanker compatibility and first-cargo acceptance cross owner, EPC, Bluewater, suppliers, installer, port and offtaker boundaries.
Commercial evidence boundary
The confirmed marine chain currently ends with EIL's INR 61 million engineering consultancy, Bluewater's CBM system agreement and Straatman's control package, with Resinex cooperation and assembly at APT Global's Ras Al Khaimah yard also documented. An industry source points to Masirah Marine for physical installation, but neither Masirah's portfolio nor Bluewater's ACME release defines the contract boundary. Bluewater's broader installation history means Masirah could be the main offshore contractor, a Bluewater subcontractor or the holder of a narrower diving and marine-construction package. Its published fleet does not include the ASD or anchor-handling assets needed to close every operating interface. Unallocated packages include anchors and chains, hoses, PLEM and valves, the export pipeline, two ASD tugs for Khareef, ROV support, as-built survey, navigation approval, integrated testing and first tanker loading.

Contract and delivery chain

Named roles and open packages

Named appointments are shown against the workstream they cover. Unallocated packages remain open until a project source identifies the responsible party.

Project ownership

Phase 1 project vehicle and owner interface

Named party
Green Hydrogen and Chemicals SPC, owned by ACME
Status
Confirmed
Source position
Oman's Ministry of Energy and Minerals identifies GHC as the ACME-owned Duqm project vehicle; some engineering records use the SAOC alias. Source
Plant integration

Plant EPC and engineering coordination

Named party
CleanTech Solutions LLC and ACME Cleantech Solutions Pvt Ltd
Status
Confirmed
Source position
Project engineering documents name the Oman EPC entity and the India engineering-services entity. This attribution does not include the offshore installation package. Source
Plant instrumentation

Differential-pressure gauges for the ammonia-storage tank package

Named party
Frick India Limited
Status
Confirmed
Source position
The project-controlled instrument datasheet names Frick India Limited as supplier and identifies four differential-pressure gauge tags under the 402 ammonia-storage tank binder package. This is plant instrumentation, not offshore installation evidence. Source
Site enabling

Plant access road and associated earthmoving support

Named party
AL ANAS Promising Projects LLC
Status
Reported
Source position
AL ANAS's official project and civil-contracting pages list the plant access road for ACME's 300 MTPD Duqm green-ammonia project and separately list the Phase 1 project. The pages do not publish the contracting party, value, measured quantities or acceptance status, so the attribution remains company-reported and outside the marine CBM scope. Source
Offshore engineering

Jettyless export-system engineering services

Named party
Engineers India Limited
Status
Confirmed
Source position
EIL records an INR 61 million consultancy award for the offshore portion, awarded in September 2024 and scheduled through March 2027. Consultancy is not physical installation. Source
Mooring system

Four-buoy Conventional Buoy Mooring system

Named party
Bluewater Energy Services
Status
Confirmed
Source position
Bluewater's project-specific award names a CBM for refrigerated green-ammonia export at Duqm and schedules system use in 2027. Source
Mooring controls

Hydraulic release, navigation aids, controls and telemetry

Named party
Straatman
Status
Confirmed
Source position
Straatman delivered and pre-commissioned four buoy-control packages with eight GMH-100 hooks, power, navigation, HPU and subsea-valve controls, transmitters and communications. Source
Buoy supply chain

Buoy or flotation participation

Named party
Resinex
Status
Reported
Source position
Straatman's sales director thanks Resinex for cooperation in the exact project thread. The specific product, quantity, customer and contract boundary are not disclosed. Source
Yard integration

Buoy fabrication, assembly or integration support

Named party
APT Global Marine and Offshore Engineering
Status
Reported
Source position
Exact-project photographs place the assembled system at APT Global's Ras Al Khaimah yard. The image supports a yard role but does not define APT's contract or any offshore scope. Source
Marine investigation

Offshore boreholes, CPT, pipeline routes and anchor-point investigation

Named party
Darkocean Geostar UAE
Status
Confirmed
Source position
Darkocean reports completed offshore geotechnical fieldwork and subsequent oceanographic data collection for the Duqm green-ammonia project. Source
Offshore construction

Physical CBM installation and offshore construction management

Named party
Masirah Marine / Masirah International Technical and Marine Services LLC
Status
Reported
Source position
An industry source identifies Masirah Marine as the most likely selected installation contractor. Masirah's official portfolio independently documents buoy and SPM installation, subsea-anchor and chain work, pipeline installation, commercial diving, survey capability and an Oman-based marine fleet. No public ACME-, Bluewater- or Duqm-specific award, notice to proceed or mobilisation record confirms the appointment, so the attribution remains Reported. Source
Mooring installation

Anchors, chains, buoy deployment and mooring-spread installation

Named party
Masirah Marine is the reported lead; exact package boundary is unpublished
Status
Reported
Source position
Masirah publicly claims SPM installation support, subsea anchoring, chain inspection and mooring-buoy work, matching the missing package. The ACME construction contract, equipment quantities, installation sequence, executing fleet and any downstream subcontractors remain unpublished. Source
Product transfer

Floating and submarine hoses, PLEM, subsea valves, export pipeline and shore crossing

Named party
No project-specific package holders publicly identified
Status
Undisclosed
Source position
Control-system references establish subsea-valve interfaces but do not attribute the physical hose, PLEM, pipeline or shore-crossing packages. Unnamed Oman CALM and PLEM posts are excluded.
Marine spread

Installation vessel, tugs, diving, ROV and hydrographic support

Named party
Masirah Marine is the reported installation lead; asset allocation remains undisclosed
Status
Reported
Source position
Masirah publishes construction barges including Kumzar 1, MI 299, Ghumays II and Ras Al Halaniyaat, plus the TS 7700 diving boat, Sea Scout survey vessel and three twin-screw tugs. No project-specific record allocates any named vessel, dive spread, ROV or hydrographic team to ACME Duqm, and no listed vessel is described as an ASD tug or anchor-handling vessel. Source
Marine operations

Two-ASD-tug support for CBM connection operations during Khareef

Named party
No project-specific tug provider or charter route publicly identified
Status
Undisclosed
Source position
Imodco's Oman case study says two ASD tugs are needed to assist CBM connection operations during the Khareef season and reports that broker availability was not confirmed. Masirah's public fleet lists twin-screw tugs rather than ASD units, so tug sourcing remains a separate charter or subcontract interface rather than an evidenced part of Masirah's in-house spread. Source
Acceptance

As-built survey, integrated ESDV and release testing, navigation acceptance and first tanker loading

Named party
Owner, port, system suppliers, installer and Yara interface still to be evidenced
Status
Not evidenced
Source position
Delivery and pre-commissioning at the yard do not prove offshore installation, integrated marine acceptance or first ammonia transfer at Duqm.

Project timeline

Material developments

Dated events that changed scope, counterparties, delivery, commissioning or operating status.

Open this project in the Change Log

Fleet review exposed a separate ASD-tug subcontract gap

Masirah's live portfolio still does not name ACME, Bluewater or Duqm, while its fleet shows relevant barges, diving and survey craft and three twin-screw tugs but no ASD or anchor-handling vessel. Imodco's two-ASD-tug Khareef requirement therefore exposes a separate undisclosed provider or charter interface.

Source

Masirah Marine emerged as the high-probability installation-contractor lead

Current market intelligence identifies Masirah as the most likely selected installer, while its official portfolio demonstrates exact-fit buoy, SPM, subsea-anchor, chain, pipeline, diving, survey and marine-plant capability in Oman. No project-specific public award or mobilisation evidence confirms the appointment, so the role remains Reported rather than Confirmed.

Source

Towell Engineering/UNISCO reported DM-water tank hydrotest preparation

A project-team post showed water filling in progress for an approximately 3,178 m3 tank ahead of hydrotesting. It is current plant-construction evidence and a reported lower-tier contractor attribution, not proof of CBM mobilisation or installation.

Source

SEZAD signed the Phase 2 and 3 downstream expansion agreements

The authority places USD 4.2 billion of investment, 800,000 tpa of green ammonia and 142,000 tpa of green hydrogen across the two later phases, with commercial operation planned for 2030 and 2033. The agreement governs a separate expansion track and leaves the Phase 1 CBM installation status unchanged.

Source

Sungrow reported a 160 MW electrolyser shipment

The shipment is tangible Phase 1 plant-equipment progress under Sungrow's wider 320 MW supply agreement. Site installation, commissioning and every CBM marine scope remain outside this evidence.

Source

Shuangliang delivered 16 hydrogen-production systems

The supplier confirms official delivery of 16 systems for ACME's 300 TPD project; company and industry records identify the batch as 80 MW. Delivery does not prove site installation or commissioning.

Source

Straatman delivered and pre-commissioned the CBM control package

The supplier confirmed four offshore buoys, eight hydraulic release hooks in total and integrated power, navigation, control and telemetry systems. Its project thread confirms Resinex cooperation and places the assembled system at APT Global's Ras Al Khaimah yard, while offshore installation and acceptance remain open.

Source

ACME retained an H1 2027 first-molecule target

The Oman country manager said all major packages were ordered and construction was on schedule. The statement updates the plant programme while leaving CBM installation and plant commissioning unconfirmed.

Source

Khimji Ramdas completed an oversized-cargo logistics campaign

Its project case records 14 packages, including a 120-tonne piece, received under hook and moved through clearance, port handling, escorted transport and unloading at the Duqm site. This is plant logistics, not offshore CBM mobilisation.

Source

Arctech confirmed the Phase 1 solar-tracker package

The company identifies a 175 MWp SkyLine II tracker supply role for the 300 TPD project. It adds a named plant-side supplier without changing the marine installation gap.

Source

ACME awarded Bluewater the green-ammonia CBM system

The agreement fixed Bluewater's delivery role, identified the system as a CBM and linked it to refrigerated-ammonia export in 2027. It did not disclose the offshore installer or all downstream suppliers.

Source

Darkocean Geostar completed offshore geotechnical fieldwork

The disclosed investigation covered deep and shallow marine boreholes, CPT, pipeline routes and marine anchor points, followed by oceanographic data acquisition. It attributes pre-installation engineering work but does not identify the offshore construction installer.

Source

ACME awarded EIL the offshore jettyless-transfer engineering services

EIL's official order table identifies a consultancy contract valued at INR 61 million for the offshore portion of the 300 MTPD Phase 1 project, with March 2027 scheduled completion. This names the offshore engineering-services firm but does not identify the physical installation contractor.

Source

ACME commenced Phase 1 construction

Construction start moved the plant into execution, while the marine export system retained separate equipment, offshore-installation and operating-acceptance gates.

Source

Yara and ACME signed the binding Phase 1 offtake agreement

The 100,000 tpa long-term offtake created the future export demand and a 2027 supply objective, but did not prove marine infrastructure readiness.

Source

Scatec disclosed the end of its ACME Oman development partnership

Scatec removed the green-ammonia project from its pipeline because ACME chose to progress before debt financing, while retaining an option for potential second-phase participation. The disclosure removes Scatec from the evidenced current Phase 1 delivery chain.

Source

Evidence gap

What remains unverified

Outstanding evidence

  • Project-specific confirmation of Masirah Marine's installation appointment, package boundary and notice to proceed
  • EIL offshore engineering deliverables and March 2027 completion status
  • Anchor, chain, buoy and mooring-spread installation records
  • Floating and submarine hose, PLEM, valve and export-pipeline suppliers
  • Named installation vessel, crane barge, diving, ROV and hydrographic-survey allocation
  • Provider, charter route and mobilisation plan for the two ASD tugs required during Khareef connection operations
  • Subsea valve, telemetry, ESDV and emergency-release integration tests
  • Port, navigation-aid, environmental and as-built acceptance
  • Yara tanker compatibility study and first-cargo transfer
  • Any current Phase 2 equity participation or exercise of Scatec's retained option
  • H1 2027 first molecule kept separate from first export and sustained operation

Related records 6

Reporting status

Construction, confirmed confidence

Last checked 13 August 2026 across 39 cited sources. The dated timeline above carries the project events.

Last checked 13 August 2026 Cited sources 39

Sources and related records

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Source collections

Project sources 39