First tender for Dubai’s $22bn tunnels due within days
11 February 2025

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Dubai Municipality is expected to tender the first two packages of the $22bn Dubai Strategic Sewerage Tunnels (DSST) project imminently.
MEED previously reported that packages J1 and W will be tendered together as separate contracts first, followed by J2 and J3, with the requests for proposals to be issued sequentially, staggered about six to 12 months apart.
The first package, J1, comprises Jebel Ali tunnels (North) and terminal pump stations (TPS). The tunnels will extend approximately 42 kilometres (km), and the links will extend 10km.
The other package, W for Warsan, comprises 16km of tunnels, TPS and 46km of links.
The client could issue the request for proposals before the end of this week, a source close to the project tells MEED.
MEED reported last week that at least three companies have been prequalified as lead members of potential consortiums that can bid for the contracts.
These include:
- Etihad Water & Electricity subsidiary (local)
- Itochu (Japan) / Plenary (Australia)
- Vision Invest (Saudi Arabia)
According to industry sources, the Plenary-Itochu consortium will likely include South Korea's Samsung C&T and Italy's Webuild.
Final partnering negotiations are still under way for the two other teams, according to sources.
The engineering, procurement and construction (EPC) team of Abu Dhabi's National Marine Dredging Company and India's Afcons Infrastructure, and separately PowerChina, are understood to be engaged in final talks with either Vision Invest or Etihad Water & Electricity consortiums, although it has also been suggested that Vision Invest and Etihad Water & Electricity could bid as one team.
"There is a possibility of team consolidation due to lack of bankable EPC," notes one source.
The same source said that Japan's Marubeni and Saudi Arabia's AlJomaih Water & Energy might also still be considering bidding for the contracts.
MEED reported in October that over a dozen companies were keen to prequalify as investors or sponsors for the planned public-private partnership (PPP) project.
They included:
- Abrdn Investcorp Infrastructure Investments Manager (UK)
- Besix (Belgium)
- China Railway Construction Corporation (CRCC)
- China Railway Engineering Group (CREG)
- China State Construction Engineering Corporation (China)
- Itochu (Japan)
- Nesma Company (Saudi Arabia)
- Plenary (Australia)
- Samsung C&T (South Korea)
- Vision Invest (Saudi Arabia)
- Webuild (Italy)
MEED previously reported that the bidders for the PPP packages will be prequalified consortiums comprised of sponsors or investors, EPC contractors, and operations and maintenance contractors.
The overall project will require a capital expenditure of about AED30bn ($8bn), while the whole-life cost over the full concession terms of the entire project is estimated to reach AED80bn.
The investor prequalification process for the scheme comes after the client prequalified EPC contractors that can partner with the developers or investors to bid for the contracts.
The prequalified EPC contractors for the J1 and W packages, along with the J2 package, are:
- Acciona Construccion (Spain) – Dubai branch
- Besix Construct (Belgium)
- China Harbour Engineering (China)
- China Railway Group (China)
- China State Construction Engineering Corporation (China)
- Daewoo Engineering & Construction (South Korea)
- Dogus Insaat VE Ticaret Anonim Sirketi (Turkiye) – Abu Dhabi
- FCC Construcccion (Spain)
- Archirodon Construction (Overseas) Company (Greece) / BESSAC (France)
- China Civil Engineering Construction Corporation – Dubai Branch / Shanghai Tunnel Engineering Company (STEC) / China Railway 14th Bureau Group Corporation
- Gulermak Agir Sanayi Insaat (Turkiye) / DETech Contracting (local)
- National Marine Dredging Company (local) / Afcons Infrastructure (India) / ITD Cementation India
- The Arab Contractors (Osman Ahmed Osman & Company, Egypt) / Darwish Engineering Emirates (local) / AqualiaMACE Contracting Operation & General Maintenance (local)
- Larsen & Toubro (India)
- Porr (Austria)
- Power Construction Corporation of China (China) – Dubai branch
- Samsung C&T Corporation (South Korea) – Dubai Branch
- SK Ecoplant (South Korea)
- Strabag Dubai (Austria)
- The Petroleum Projects & Technical Consultation Company (Petrojet) – Egypt
- Webuild (Italy)
DSST packages
Under the current plan, the $22bn DSST project is broken down into six packages, which will be tendered as PPP packages with concession periods lasting between 25 and 35 years.
In addition to J1 and W, J2 covers the southern section of the Jebel Ali tunnels and will extend 16km and have a link stretching 46km.
J1, J2, W and J3 will comprise the deep sewerage tunnels, links and TPS (TLT) components of the overall project.
J1, J2 and W will be procured under a design, build, finance, operate and maintain model with a concession period of 25-35 years.
J3 will be procured under a design, build and finance model with a concession period of 25-35 years. Once completed, Dubai Municipality will operate J3, unlike the first three packages, which are planned to be operated and maintained by the winning PPP contractors.
The project’s remaining two packages entail expanding and upgrading the Jebel Ali and Warsan sewage treatment plants. MEED understands that these packages will be procured at a later stage.
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- Corrosion-resistant, alloy-lined intra-field flowlines and umbilicals connecting the gas wellhead platforms to the central gathering platform and the auxiliary platform
 Package 2B: Dorra central gathering platform complex, export pipelines and cables - Central gathering platform
- Auxiliary platform
- Dorra accommodation platform
- Flare platform
- Bridge platform
- Pipelines for gas and condensate transmission to each shareholder
- Produced water pipeline from the central gathering platform to Al-Khafji field and from the planned onshore processing facility next to the Al-Zour refinery in Kuwait to Al-Khafji field
- Recovered monoethylene glycol (MEG) pipeline from Al-Khafji field to the central gathering platform
- Control and power system linking Al-Khafji onshore facilities to offshore units
- Offshore central control room at Dorra accommodation platform
 Package 3: Onshore gas processing facilities - Buildings to be constructed as part of KJO’s Dorra project onshore package include:
- Dorra control building
- Operator building
- Operations, maintenance and engineering building
- Process interface building
- Onshore 115/69kV substation
- Two gas-insulated substations
- Warehouse
- Maintenance building
- Mosque
- Telecommunications tower radio building
- Beach valve substation at the planned onshore processing facility next to the Al-Zour refinery in Kuwait
 
 
- Processing facilities for KJO's onshore package:
- Produced water receiving and treatment
- Sour water stripping and treated water system
- Rich MEG storage tank
- MEG regeneration and reclamation
- Recovered hydrocarbons system
- Lean MEG storage and supply
- Fresh MEG storage and supply
- Beach valve stations at Al-Khafji and Al-Zour
 
 
- Utilities:
- Instrument and plant air system
- Nitrogen generation system
- Diesel storage and distribution system
- Fuel gas system
- Closed drain and slop tank system
- Hazardous area open drains system
- Industrial water system
- Drinking water system
- Flare gas recovery system and a low-pressure flare system
- Fire water system
- Emergency diesel generator
- Sewage treatment
 
 The Dorra field is estimated to hold 20 trillion cubic metres of gas and 310 million barrels of oil. Kuwait and Saudi Arabia have been working together to develop the offshore field since it was discovered in 1965. The two sides expect to produce about 1 billion cubic feet a day of gas from the asset and have agreed to split the gas output equally. A geopolitical tussle over ownership of the asset has hampered progress. Iran, which calls the field Arash, claims that it partially extends into its territory and that Tehran should be a stakeholder in any development project. Kuwait and Saudi Arabia maintain that the Dorra field lies entirely in the waters of their shared territory, known as the Neutral Zone or Divided Zone, and that Iran has no legal basis for its claim. In February 2024, Kuwait and Saudi Arabia reiterated their claim to the Dorra field in a joint statement issued during an official meeting in Riyadh between Kuwaiti Emir Sheikh Mishal Al-Ahmad Al-Jaber Al-Sabah and Saudi Crown Prince and Prime Minister Mohammed Bin Salman Bin Abdulaziz Al-Saud. KJO, which is jointly owned by Saudi Aramco subsidiary Aramco Gulf Operations Company and Kuwait Gulf Oil Company, a subsidiary of state-owned Kuwait Petroleum Corporation (KPC), is understood to have issued the tenders for the project in August 2024. MEED reported in September 2023 that Aramco and KPC had selected France’s Technip Energies to carry out front-end engineering and design (feed) and pre-feed work on the Dorra offshore field development project. The original feed work for a project to develop the field was performed more than a decade ago. However, due to changes in technology, the engineering design needed to be updated before the project could reach a final investment decision. ALSO READ: Kent wins feed contract for Khafji desalter plant upgradehttps://image.digitalinsightresearch.in/uploads/NewsArticle/14989042/main1446.jpg
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                                 Oman invites consultancy bids for wind and solar IPPs Oman invites consultancy bids for wind and solar IPPs31 October 2025 Oman state offtaker Nama Power & Water Procurement Company (Nama PWP) has invited bids for financial and commercial consultancy services for the development of renewable energy independent power producer (IPP) projects in Oman. The tender, referenced under OPWP/2025/039, covers planned solar and wind projects. The bid submission deadline is 13 November. According to the company, the selected consultant will advise on structuring, financial modelling, risk assessment and transaction support for the procurement of future renewable IPP projects. Nama PWP, part of the government-owned Nama Group, has been driving the country’s energy transition through multiple solar and wind IPPs in Dhofar, Ibri, Manah and other regions. In October, it issued a separate tender for supervisory consultancy services for the Duqm, Sadah and Mahout wind IPPs. The bid submission deadline is 20 November. The three IPPs are part of Nama PWP's plans to procure five wind power stations with a combined capacity of 1,171MW. The planned schemes and their capacities are: - Dhofar 2: 132MW
- Sadah: 99MW
- Duqm: 270MW
- Mahout: 400MW
- Jaalan Bani Bu Ali: 270MW
 MEED understands that the deadline for supervisory consultancy services bids for the Dhofar 2 and Jaalan Ban Bu Ali projects has now closed and these bids are in the evaluation stage. https://image.digitalinsightresearch.in/uploads/NewsArticle/14982749/main.jpg
 
                
