Abu Dhabi National Oil Company continues to sit at the center of the global EPC market, with one of the deepest and most diversified project pipelines anywhere in the industry. Offshore brownfield expansions, new onshore gas trains, downstream chemicals, and long duration EPCM scopes are all moving in parallel. For contractors, suppliers, and service providers, ADNOC’s current tender book represents a rare concentration of multi billion dollar opportunities across oil, gas, and chemicals.
Below is EPCIntel.com‘s view of the five most active ADNOC EPC tenders and recently awarded contracts that are defining execution activity through 2027.
1. Upper Zakum offshore field expansion, UZ 1.5 mmbd
The Upper Zakum expansion remains the single largest EPC opportunity currently active under ADNOC’s portfolio. The program targets an increase in production capacity to 1.5 million barrels per day, delivered through upgrades and new facilities across four artificial islands offshore Abu Dhabi.
Total capex is estimated at around USD 17 billion, spread across multiple EPC packages rather than a single mega contract. Tendering began in July 2025, with phased awards expected through late 2025 and commissioning targeted by 2027.
From an EPC perspective, the scope is exceptionally broad. Packages cover new wellhead facilities, separation and processing units, utilities, power generation, water injection, pipelines, and extensive brownfield tie ins. Typical capital allocation across the program includes roughly USD 6 to 7 billion for offshore process facilities and islands, USD 3 to 4 billion for pipelines and subsea infrastructure, USD 2 to 3 billion for utilities and power, and the balance across drilling support, integration, and commissioning.
For Tier 1 EPC contractors, Upper Zakum is not one contract but a portfolio of work that can sustain fabrication yards, offshore installation spreads, and engineering centers for several years.
2. Habshan 7 gas train project
Habshan 7 is ADNOC Gas’ next major onshore processing expansion and one of the most competitive EPC tenders currently in play. The project centers on a new gas processing train at the Habshan complex, strengthening ADNOC’s long term gas self sufficiency and export capability.
Phase 1 EPC capex is estimated at around USD 2.8 billion. The EPC tender was issued in August 2025, with bid submissions due by mid September 2025, placing awards firmly in the near term.
The EPC scope includes inlet facilities, gas processing units, utilities, offsites, storage, and associated infrastructure. Capital spend typically breaks down into USD 1.4 to 1.6 billion for process units and major equipment, USD 600 to 700 million for utilities and offsites, and the remainder across civil works, electrical, instrumentation, and commissioning.
Habshan 7 is particularly attractive for contractors with strong onshore gas credentials and for equipment suppliers across compressors, heat exchangers, and power systems.
3. Asab and Buhasa gas facilities expansion
While not a new tender, the Asab and Buhasa gas facilities expansion remains one of the most active ADNOC EPCM programs under execution in 2025. The USD 1.1 billion EPCM contract has been awarded to Kent, with work focused on debottlenecking and expanding existing gas processing assets.
The value lies in sustained execution rather than headline capex. Brownfield modifications, tie ins, and phased shutdowns create ongoing demand for construction, mechanical, E&I, and commissioning subcontractors. Typical capital deployment is weighted toward construction and site execution, with EPCM services accounting for a smaller but steady portion of overall spend.
For the supply chain, Asab and Buhasa represent long tail opportunity rather than a single award driven spike.
4. Offshore wellhead towers and pipelines, Hair Dalma, Satah, Bu Haseer
ADNOC’s offshore infrastructure renewal continues through the Hair Dalma, Satah, and Bu Haseer developments. A USD 591 million EPC contract has been awarded to a joint venture of Petrofac and Sapura Energy, with execution running from late 2024 into 2025.
The scope covers EPC of offshore wellhead towers, associated pipelines, and umbilicals. Capital spend is typically split with around USD 250 to 300 million for topsides and jacket fabrication, USD 150 to 180 million for pipelines and subsea works, and the remainder for installation, hook up, and commissioning.
Although awarded, the project remains highly active, particularly for fabrication yards, offshore installation contractors, and marine logistics providers.
5. TA’ZIZ industrial chemicals and derivatives plant
Downstream chemicals is the fifth pillar of ADNOC’s current EPC push. The USD 1.99 billion TA’ZIZ industrial chemicals and derivatives plant at Ruwais was awarded in November 2025 to China National Chemical Engineering.
The project forms a cornerstone of the TA’ZIZ chemicals platform and supports ADNOC’s strategy to move deeper into value added petrochemicals. While the EPC award is complete, the execution phase is only beginning.
Typical capital allocation includes USD 1.2 to 1.3 billion for process units and licensed technology, USD 400 to 500 million for utilities and offsites, and the balance across construction, integration, and commissioning. Equipment supply, construction services, and specialist packages will remain active well into the second half of the decade.
Outlook
Taken together, these five projects underline the scale and diversity of ADNOC’s EPC pipeline. Upper Zakum and Habshan 7 dominate by value and competitive tension, while Asab, Buhasa, offshore wellhead developments, and TA’ZIZ ensure continuity of work across brownfield, offshore, and downstream segments. For the global EPC market, ADNOC remains one of the most reliable sources of sustained, bankable project demand.
