EPC teams start forming for $22bn Dubai tunnels
24 September 2024
Register for MEED's 14-day trial access
Some prequalified engineering, procurement and construction (EPC) companies for the contracts to develop and operate various packages of the $22bn Dubai Strategic Sewerage Tunnels (DSST) project have started forming teams in anticipation of the next stage of the tendering process.
In August, Dubai Municipality prequalified 21 companies and consortiums that can bid for three packages known as J1, J2 and W, and 19 for a fourth package known as J3, of the six-package project.
Some companies are in the process of finalising their partners, while at least one has said it does not intend to tap a partner.
While the country of origin is expected to play a role in the formation of teams, it is expected that the complementarity of the companies' expertise and resources will be crucial in the selection process.
The client and its advisers have opted to prequalify EPC contractors ahead of investors in a departure from the classic public-private partnership (PPP) procurement process.
"The idea is to issue the technical information pack to the prequalified EPC contractors before the prequalification process for investors starts, allowing EPC contractors time to undertake the design process," a source familiar with the project recently told MEED.
He added: "These designs should be ready once Dubai Municipality completes the prequalification process for investors, saving roughly three months compared to the usual route, where the prequalification processes for developers and EPC contractors are done simultaneously."
The staggered prequalification process is expected to help ensure the request for proposals process takes about six months rather than the typical nine months.
Six 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.
The first package, J1, comprises Jebel Ali tunnels (North) and terminal pump stations (TPS). The tunnels will extend approximately 42 kilometres, and the links will extend 10 kilometres (km).
The second package, J2, covers the southern section of the Jebel Ali tunnels, which will extend 16km and have a link stretching 46km.
W for Warsan, the third package, comprises 16km of tunnels, TPS and 46km of links.
J3, the fourth package, comprises 129km of links.
J1, J2 and W will be procured under a design-build-finance-operate-maintain model with a concession period of 25-35 years.
J3 will be procured under a design-build-finance model with a concession period of 25-35 years. Once completed, Dubai Municipality will operate them, unlike the first three packages, which are planned to be operated and maintained by the winning PPP contractors.
J1, J2, W and J3 will comprise the deep sewerage tunnels, links and TPS (DLT) components of the overall project.
The project’s remaining two packages entail the expansion and upgrade of the Jebel Ali and Warsan sewage treatment plants (STPs), and will be procured in a process separate from the four DSST-DLT components.
Prequalified EPC contractors
The prequalified EPC companies for packages J1, J2 and W 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)
EPC companies that have been prequalified for package J3 are:
- Acciona Construccion (Spain) – Dubai branch
- Alghanim International General Trading & Contracting (Kuwait)
- China Railway Group (China)
- China State Construction Engineering Corporation (China)
- Daewoo Engineering & Construction (South Korea)
- DETech Contracting
- Archirodon Construction (Overseas) Company (Greece) / BESSAC (France)
- China Civil Engineering Construction Corporation (China) – Dubai branch / Shanghai Tunnel Engineering Company (STEC) / China Railway 14th Bureau Group Corporation
- Gulermak Agir Sanayi Insaat (Turkiye) / DETech Contracting (local)
- International Foundation Group (IFG, local) / General Construction Company (local)
- Nael Construction & Contracting (UAE) / Concord for Engineering & Contracting (Egypt) – Dubai branch
- National Marine Dredging Company (local) / Afcons Infrastructure (India) / ITD Cementation India
- Mapa Insaat Ve Ticaret (Turkiye)
- Mohammed Abdulmohsin Al-Kharafi & Sons (Kuwait)
- Porr (Austria)
- Power Construction Corporation of China – Dubai branch
- Strabag (Austria)
- Tecton Engineering & Construction (local)
- The Petroleum Projects & Technical Consultation Company – Petrojet (Egypt)
Market-sounding
Dubai Municipality is expected to hold a market-sounding event for investors, MEED reported in early September .
The event is set to take place during the first week of October, a few weeks before interested investors submit their statements of qualifications (SOQ) for the projects' various packages.
MEED previously reported that the client had extended the SOQ submission deadline from 5 September to 21 October.
Gravity system project
The DSST project aims to convert Dubai’s existing sewerage system from a pumped system to a gravity system by decommissioning the existing pump stations and providing “a sustainable, innovative, reliable service for future generations”.
Dubai currently has two major sewerage catchments. The first in Deira is Warsan, where the Warsan STP treats the flow.
The second catchment is in Bur Dubai, where the wastewater is treated at the Jebel Ali STP.
According to a source close to the project, the DSST will replace 120 pump stations, saving approximately 100 gigawatt-hours of electricity annually.
Exclusive from Meed
-
Mace confirms Muscat cultural complex appointment3 September 2026
-
Read the September 2026 MEED Business Review3 September 2026
-
Contractors submit bids for Dukhan field facilities upgrade3 September 2026
-
Oman tenders advisory for 3GW solar IPPs3 September 2026
-
US firm wins work on QatarEnergy NGL train project3 September 2026
All of this is only 1% of what MEED.com has to offer
Subscribe now and unlock all the 153,671 articles on MEED.com
- All the latest news, data, and market intelligence across MENA at your fingerprints
- First-hand updates and inside information on projects, clients and competitors that matter to you
- 20 years' archive of information, data, and news for you to access at your convenience
- Strategize to succeed and minimise risks with timely analysis of current and future market trends
Related Articles
-
Mace confirms Muscat cultural complex appointment3 September 2026
UK-headquartered engineering firm Mace Consult has confirmed its appointment to manage the construction of the Sayyid Tarik Bin Taimur Cultural Complex in the Al-Seeb area of Muscat.
The firm will provide project leadership, programme management, commercial oversight and delivery assurance services.
The complex will be developed on a 400,000-square-metre (sq m) site. Centred on an urban plaza, it will bring together a range of cultural and institutional facilities.
These include a 23,000 sq m national library, a 15,500 sq m national archives, four facilities buildings with a combined area of 14,000 sq m, and a 5,000 sq m energy and data centre.
At the heart of the development is the national theatre, which will include a 1,000-seat auditorium and a 250-seat auditorium. The facilities will sit within landscaped gardens and water features, alongside a signature canopy structure.
In October 2023, the Ministry of Culture, Sports & Youth awarded a design-and-build contract for the complex to a joint venture of local firm Saif Salim Issa Al-Harrasi and Turkiye’s Sembol Construction, MEED reported.
In January 2026, UAE-based steel structure manufacturer Emirates Building Systems, a wholly owned subsidiary of Dubai Investments, won a contract to deliver the project’s structural steel package.
Last month, Kuwait-based engineering and architecture consultancy SSH was appointed as the project’s construction supervision consultant.
https://image.digitalinsightresearch.in/uploads/NewsArticle/19314737/main.jpg -
Read the September 2026 MEED Business Review3 September 2026
Download / Subscribe / 14-day trial access Nuclear energy is becoming an increasingly important part of the GCC’s long-term power strategy, as governments seek to strengthen energy security, diversify generation and meet decarbonisation goals.
Saudi Arabia’s civil nuclear cooperation deal with the US marks a major step forward for its plans to develop its first commercial nuclear power plant, while rising electricity demand across the region is creating further momentum.With the UAE already operating the Middle East’s first commercial nuclear power station, Saudi Arabia targeting up to 17GW by 2040 and Bahrain exploring small modular reactor technologies, our latest Agenda feature examines the growing role of nuclear energy in the GCC’s future power projects pipeline.
September’s Market Focus turns to Kuwait, where the country’s oil-dependent economy has weathered unprecedented disruption, yet major investment and infrastructure deals point to resilience.
This edition also includes a downstream industry report, exploring the accelerating investment in gas processing and associated infrastructure across Mena, the major projects driving spending, and the growing focus on NGL recovery, efficiency and higher-value gas products.
In the latest issue, we speak to Emsteel chief commercial officer Michael Rion about the Abu Dhabi steelmaker’s plans to strengthen its position in domestic and international markets, including the launch of its ES600 steel rebar and the expansion of its long-standing partnership with Adnoc Group.
We also examine the GCC’s accelerating tunnelling boom, as major metro, sewerage and road projects increasingly move underground. The feature explores the scale of investment, the contractors and technology driving the market, and the challenges facing the region as demand for tunnelling expertise and equipment grows.
We hope our valued subscribers enjoy the September 2026 issue of MEED Business Review.

Must-read sections in the September 2026 issue of MEED Business Review include:
> AGENDA: Gulf nuclear revival takes shapeINDUSTRY REPORT:
Downstream
> Gas processing takes centre stage in Mena region> INTERVIEW: Emsteel persists with business productivity and efficiency
> TUNNELS: The Gulf’s next construction boom is happening underground
> KUWAIT MARKET FOCUS:
> COMMENT: Kuwait keeps dealmaking alive under fire
> GOVERNMENT: Kuwait shows tentative signs of economic development
> BANKING: Necessity is the mother of invention for Kuwaiti lenders
> OIL & GAS: Regional war to have lasting impact on Kuwaiti oil sector
> POWER & WATER: Kuwait utilities investment shifts towards water
> CONSTRUCTION: Kuwait construction holds up despite regional strife
> MARKET TALK: Kuwait stands resilient amid regional tensions
> DATABANK: Kuwait’s economic gains are dented by conflict in 2026> MEED COMMENTS:
> Cash is king for Dubai construction
> Aramco moves apace with Jafurah unconventional gas campaign
> Neom’s next phase is crucial to green hydrogen pipeline
> Oman opens door to direct power sales> GULF PROJECTS INDEX: Qatar leads gains as Gulf total holds
> JUNE 2026 CONTRACTS: Middle East contract awards
> ECONOMIC DATA: Data drives regional projects
> OPINION: The history of false dawns
> BUSINESS OUTLOOK: Finance, oil and gas, construction, power and water contracts
To see previous issues of MEED Business Review, please click herehttps://image.digitalinsightresearch.in/uploads/NewsArticle/19308287/main.gif -
Contractors submit bids for Dukhan field facilities upgrade3 September 2026

Contractors have submitted bids to QatarEnergy for a key tender to upgrade facilities at the Dukhan oil field in Qatar, about 80 kilometres west of Doha.
Dukhan, Qatar’s first and only onshore oil field, was discovered in 1938, with oil production starting in 1939-40. The country currently produces about 1.8 million barrels a day (b/d) of crude, with the Dukhan field accounting for about 350,000 b/d of output.
QatarEnergy issued the tender for the Dukhan production facilities upgrade (DPFU) Phase 1B (Part 2) project on 8 June, and initially set a bid submission deadline of 26 July for contractors, which it later extended to 9 August.
The following local contractors, among others, are understood to have submitted bids for the DPFU Phase 1B (Part 2) tender, according to information obtained by MEED Projects:
- Doha Petroleum Construction Company (Dopet)
- Galfar Al-Misnad Engineering & Contracting
- Qatar Engineering & Construction Company (Q-con)
QatarEnergy originally stipulated a bond validity of 150 days (until 23 December) and a bid validity of 120 days (until 23 November) for the project.
The engineering, procurement, installation and commissioning (EPIC) scope covers upgrades to 56 oil manifolds, 108 gas-lift manifold slots, chemical injection systems and key pumping facilities, along with associated piping, instrumentation, control, electrical and civil works.
The scope includes demolition of obsolete equipment, degassing station enhancements, and full testing and handover. It also encompasses additional capacity enhancement works under Part 3, mainly the installation of new oil export and produced-water transfer pumps, along with supporting facility modifications.
The project involves complex interfaces and shutdown-critical activities requiring expertise in live-plant integration.
The Dukhan oil field extends over an area of about 80km by 8km and consists of four reservoirs: Khatiyah, Fahahil, Jaleha and Diyab. The first three are oil reservoirs. The more recently developed Diyab reservoir contains non-associated gas and is estimated to hold around 2 billion barrels of crude oil reserves. Diyab lies on the southern flank of Dukhan.
ALSO READ: Frontrunners emerge for Qatar offshore oil field expansion
https://image.digitalinsightresearch.in/uploads/NewsArticle/19312615/main.jpeg -
Oman tenders advisory for 3GW solar IPPs3 September 2026
Nama Power & Water Procurement Company (Nama PWP) has invited bids for legal consultancy services for the development of three 1GW solar independent power projects (IPPs).
The projects will connect to Oman’s main interconnected system (MIS) and are targeted to reach commercial operation by the second quarter of 2030.
The bid submission deadline is 10 October.
The state offtaker has now tendered three separate consultancy contracts for the solar IPPs, including two issued in July.
The bid submission deadline for the financial and commercial consultancy services tender is 10 September.
Earlier, on 15 July, a technical advisory tender was issued for the three projects as part of a 4GW programme.
As MEED reported, the financial advisory tender covers four 1GW solar projects connected to the MIS, also targeting commercial operation by the second quarter of 2030.
It is understood that bids were submitted for this contract on 26 August.
Oman Electricity Transmission Company (OETC) had earlier outlined the planned grid connection for four 1GW solar IPPs as part of the sultanate’s renewable energy expansion through 2030.
The projects are included in OETC’s Five-Year Annual Transmission Capability Statement for 2026-30.
The first, the 1GW Adam solar IPP, is scheduled for grid integration in 2028 and is further ahead in the procurement process, with Nama PWP issuing a request for qualification for the project in June.
OETC said it expects the 1GW Al-Kamil 2 solar project to be integrated in 2030 through the planned Sadaf 400kV grid station. The 1GW Dhofar solar IPP and 1GW Mahadha solar IPP are also scheduled for integration in 2030.
https://image.digitalinsightresearch.in/uploads/NewsArticle/19311796/main.jpg -
US firm wins work on QatarEnergy NGL train project3 September 2026
Register for MEED’s 14-day trial access
US-based Nessco has that it has won a subcontract to provide telecommunications, radio and security systems for QatarEnergy’s project to add a fifth natural gas liquids (NGL) train at its fractionation complex in Qatar’s Mesaieed Industrial City.
The subcontract was awarded to Houston-headquartered Nessco by India’s Larsen & Toubro Energy Hydrocarbon (LTEH), in its capacity as the main contractor performing engineering, procurement and construction (EPC) works on the NGL-5 project.
MEED reported last September that QatarEnergy had selected a consortium of LTEH and Greece-headquartered Consolidated Contractors Group (CCC) to execute EPC works on the NGL-5 project.
The aim of the project, estimated to be worth $2.5bn, is to build a fifth NGL train with the capacity to process up to 350 million cubic feet a day of rich associated gas from QatarEnergy’s offshore and onshore oil fields.
In a statement confirming its contract award in October last year, LTEH said the scope of work on its contract “encompasses engineering, procurement, construction, installation and commissioning of a natural gas liquids plant and allied facilities for processing rich associated gas (RAG). This also involves all associated utilities and offsites and integration with existing facilities.
“The RAG sourced from offshore and onshore oil fields will be treated at the plant to remove impurities like H2S, CO2 and H2O, producing value-added products such as lean sales gas, ethane, propane, butane and hydrocarbon condensate,” Bombay Stock Exchange-listed L&T said.
Under the consortium arrangement, LTEH, as the lead partner, will be responsible for engineering and procurement, while CCC will handle construction activities.
Project scope of work
Associated gas from the PS1, PS2 and PS3 offshore fields, as well as the Dukhan onshore field, is processed at existing facilities at the NGL complex in Mesaieed – specifically, the Fahahil stripping plant, NGL-1 and Qapco ethane recovery units.
The planned NGL-5 facility will replace these three units at the Mesaieed complex and process gas from the PS1, PS2 and Dukhan fields.
The scope of work on the project involves EPC of units for the following functions:
- Feed gas compression
- Slug handling
- Gas sweetening
- Dehydration
- Mercury removal
- NGL fractionation
- NGL recovery
- Product treatment
- Propane refrigeration
- Acid gas enrichment
- Sulphur recovery
- Anti-flaring
- Utilities
- Boil-off gas recovery
- Drains and collection networks
- Effluent water treatment plant
- Carbon dioxide treatment and sequestration/export
- Brownfield modifications
- Product rundown pipelines
QatarEnergy intends to start operations at the NGL-5 facility by the second quarter of 2028.
https://image.digitalinsightresearch.in/uploads/NewsArticle/19310738/main5414.jpeg