Tunnelling projects take the front seat
22 August 2023
The economic and energy diversification programmes of countries in the Middle East and North Africa have provided an impetus for physical infrastructure projects such as tunnels, which have become emblematic of the region’s transition towards a more interconnected and sustainable future.
In some cases, tunnelling projects in the region also extend beyond their utilitarian functions – in addition to decongesting cities and improving water networks, they embody diplomatic overtones and regional cooperation.
Some of the biggest tunnelling projects in the Middle East have historically been executed in the GCC, especially in Saudi Arabia and the UAE. These two countries also promise the most robust future project pipelines.
Neom tunnels
In line with its strategy of redefining sustainable urban living, the integration of tunnels is key to shaping the landscape at Neom in Saudi Arabia.
Tunnels are core components of the integrated transportation network at Neom's The Line, Oxagon and Trojena developments.
According to regional projects tracker MEED Projects, about $6.9bn-worth of schemes with tunnel components are at the pre-execution and execution phases at Neom.
Tunnel projects worth over $4.6bn are in the execution phase. These include the backbone infrastructure tunnels for The Line project, which involve constructing two railway tunnels in parallel using the drill-and-blast method, one for passengers and the other for goods.
In June 2022, Neom awarded $2.7bn-worth of main contracts to the joint venture of Shibh al-Jazira Contracting, China State Construction Engineering and FCC Construction for lots two and three of this scheme.
A separate contract worth about $1.8bn was awarded by Neom for lots four and five to a team of Archirodon, Samsung Engineering and Hyundai Engineering.
The pipeline of projects with tunnel components at Neom is worth about $2.3bn. Some of the major upcoming projects include the time-travel tunnel and funicular railway at Trojena and a package of works for the Spine railway network at The Line. The main contract bids for both packages are in the evaluation phase.
Other upcoming projects include the Spine's desert coastal west cut-and-cover tunnels for The Line, which are under design, and packages one and two of the delta junction tunnel at Oxagon. Neom expects to receive the bids for both packages by 27 August.
Dubai Deep Tunnels Portfolio
In Dubai, meanwhile, the Deep Tunnels Portfolio includes a series of interconnected deep sewage tunnels and associated facilities. The project involves the construction of two sets of deep tunnels terminating at two pump stations located at sewerage treatment plants (STPs) in Warsan and Jebel Ali.
A conventional sewage and drainage collection system and STPs will be built in Hatta.
First announced in 2015, the Dubai Deep Tunnels Portfolio project has faced delays over the years. The tender for consultancy services was first issued in 2015 and was awarded the following year to US-headquartered Parsons.
In June 2017, Dubai Municipality appointed Dutch consulting firm KPMG to assist with preparing the project under a public-private partnership (PPP) model instead of the conventional engineering, procurement and construction model.
There was no significant progress on the project after Dubai Municipality conducted a geotechnical investigation in late 2017.
This changed in June of this year, however, when Dubai’s Executive Council approved the project and said it would require an investment of about AED80bn ($22bn).
It added that the project has been designed to serve the needs of the Dubai population for the next 100 years, in alignment with the Dubai Economic Agenda D33 and the Dubai Urban Plan 2040.
In August, Dubai Municipality invited firms to express interest in bidding for the contract to provide project management consultancy services for the scheme. It expects to receive prequalification applications by 25 August.
Jeddah stormwater system
Jeddah Municipality is also taking steps to improve the city’s water infrastructure, and is investing in stormwater drainage and management systems.
The latest project under this programme is the King Abdullah Road-Falasteen Road (Kafa) tunnel, which is being developed in two phases. Phase one involves the construction of two main storage tunnels, one 5.3 kilometres (km) long and the other 3.4km long.
The scope of phase two includes constructing a terminal pumping station, a marine outfall and all necessary online and offline shafts.
In March, Jeddah Municipality invited contractors to prequalify for the contract to build the tunnels. It is understood the client received responses to the request for qualifications in June.
US-based Aecom is the consultant for the project.
Morocco's undersea rail link
In June this year, the Spanish government revived the Morocco-to-Spain undersea rail link project after allocating about $2.5m for a renewed design study.
The project was launched in 2003 but was put on hold after the 2008 financial crisis. It has undergone several rounds of feasibility studies but remains in the study stage after nearly two decades of funding-linked delays.
The plans involve a double-rail track and additional service line stretching 38.5km between Tarifa in Spain and Tangier in Morocco. A 28km section will run under the Mediterranean Sea at a maximum depth of 475 metres.
The maximum depth of the tunnels will be 300 metres. Each single-track tunnel will have an inner diameter of 7.9 metres, while the service gallery will be 6 metres in diameter.
The two countries are developing the project jointly through Morocco’s National Society for Strait of Gibraltar Studies and the Sociedad Espanola de Estudios para the Comunicacion Fija a Traves del Estrecho de Gibraltar.
In 2006, Swiss engineering company Lombardi Engineering was selected to design the tunnel and the preliminary studies for the project were completed two years later.
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MEED’s March 2026 report on Egypt includes:
> GOVERNMENT: Egypt adapts its foreign policy approach
> ECONOMY & BANKING: Egypt nears return to economic stability
> OIL & GAS: Egypt’s oil and gas sector shows bright spots
> POWER & WATER: Egypt utility contracts hit $5bn decade peak
> CONSTRUCTION: Coastal destinations are a boon to Egyptian constructionTo see previous issues of MEED Business Review, please click herehttps://image.digitalinsightresearch.in/uploads/NewsArticle/15717634/main.gif -
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MEED’s March 2026 report on Egypt includes:
> COMMENT: Crisis gives way to cautious revival
> GOVERNMENT: Egypt adapts its foreign policy approach
> ECONOMY & BANKING: Egypt nears return to economic stability
> OIL & GAS: Egypt’s oil and gas sector shows bright spots
> POWER & WATER: Egypt utility contracts hit $5bn decade peak
> CONSTRUCTION: Coastal destinations are a boon to Egyptian constructionTo see previous issues of MEED Business Review, please click herehttps://image.digitalinsightresearch.in/uploads/NewsArticle/15781010/main.gif -
Lessons learnt from a power plant decommissioning26 February 2026

Al-Kamil power plant, a 280MW, gas-fired power plant in the Sharqiya region of Oman, was recently decommissioned following nearly 20 years of operations as the country’s second independent power plant.
The plant reached commercial operation in 2002, at which time it started to supply electricity to Nama Power & Water Procurement Company under a 15-year power purchase agreement that was later extended to the end of 2021. No further extension was granted so, in 2022, the decommissioning process was initiated.
Al-Kamil power plant was one of the first privately owned power plants in Oman to be decommissioned. The entire process took significantly longer than planned – three years compared to an initial target of 12 months. This was not unexpected, however, as there were not yet any standard processes to follow. Everything was being done for the first time, and proper procedures had to be established.
Starting decommissioning
The decommissioning of a power plant is a complex process and can take as much time to complete as it takes to build a plant. It involves environmental considerations, health and safety protocols, detailed surveys, de-energisation, dismantling, demolition, waste management and the segregation and storage of secondary valuables.
Careful planning and management are essential to ensure that decommissioning is accomplished safely, cost-effectively and in accordance with all government environmental standards.Consulting on the decommissioning of Al-Kamil were Dubai’s Golden Sands Marketing Consulting (GSMC), appointed in 2021, alongside Abu Dhabi’s Sustainable Water & Power Company (SWPC) and Dubai’s Tractebel Engineering Company (TEC).
One of the first steps that GSMC undertook was to prepare a master plan covering the entire decommissioning process (see right).
A site investigation was undertaken by GSMC and SWPC early in the process to determine the condition of the power assets and the overall site.
The Al-Kamil power plant was found to have been well maintained, with no major health, safety, security and environment (HSSE) issues.
SWPC prepared the dismantling guidelines covering all plant equipment, and these were reviewed by TEC. The guidelines covered three main phases: the shut down and isolation of all assets; the de-
energisation process; and the dismantling of the plant equipment, its removal from site and the demolition of all remaining civil works.GSMC designed a sales strategy for the plant equipment, taking into consideration the secondary market for power-related equipment, as well as the scrap market in Oman. A competitive procurement process was also followed in an effort to maximise sales revenues from plant equipment.
A separate tender was issued to appoint a demolition contractor to remove the remaining civil works, and once this work was complete, a local environmental engineering company undertook a final environmental report to demonstrate that the site was properly cleared and ready for handover to the original owner, the Housing & Urban Planning Ministry.
Final results
The decommissioning project went well in terms of HSSE considerations, with no fatalities, no lost-time injuries and no first aid injuries over the more than 243,000 total workhours at the site.
There were no material environmental spills or incidents to report, and all above- and below-ground structures were demolished and safely removed from the site in accordance with local requirements.
The final environmental report, completed just before handover, showed that the site was effectively in the same condition as it was when originally taken over at the start of construction.
The decommissioning was also successful from a financial perspective, as revenues from the sale of plant equipment and diesel fuel were beyond what was required to cover the costs associated with the decommissioning process.
Lessons learnt
Many lessons were learnt during the process that can benefit future power plant decommissioning efforts in the region.
> Notify key stakeholders early: Key stakeholders are those that have a vested interest in the project, either through ownership of certain assets on site, such as grid connection assets, or via regulation, such as the environmental authority. Many of these stakeholders take time to respond, so notifying key stakeholders early in the process can ensure that unnecessary delays are avoided.
> Prioritise HSSE: For any future decommissioning project, HSSE must be a top priority, and this should be the focus throughout the entire decommissioning process – at all levels of work and management.
The site manager at Al-Kamil installed a 24/7 closed-circuit television camera, which proved to be extremely effective in terms of monitoring progress and identifying potential HSSE issues before they became an incident. This simple and cost-effective practice should be replicated for all future decommissioning projects.
> Appoint the environmental consultant early in the process: It is advisable to appoint an environmental consultant early in the process. The consultant is needed to coordinate activities with the local environmental authority and obtain a no-objection letter or certificate, complete an environmental management report and an update of the environmental impact assessment, which includes an environmental baseline.
Ideally, these reports and environmental authority approvals should be completed well before any work is under way at the site. This information is also useful to potential bidders for the sale of equipment, or to contractors involved in the dismantling and demolition process.
> Submit an environmental management plan for approval: It is unlikely that any environmental authority will provide a no-objection letter or certificate without reviewing the environmental plan. It is therefore necessary to complete the plan early, prior to informing the environmental authority. This can minimise potential delays in starting the decommissioning process.
As a general practice, an environmental consultant should be brought on board early in the process, ideally once the overall master plan is approved by the company.
> Establish a proactive steering committee: This was done at Al-Kamil and proved to be effective when it came to overseeing project progress and dealing with issues as they arose. Certain members of the steering committee visited the site regularly and undertook spot HSSE inspections.
At Al-Kamil, the overall decommissioning was relatively straightforward as the plant was in a remote area. However, decommissioning a power plant in a busier location, or when part of the power plant remains in operation, is more challenging. Under these circumstances, a steering committee is vital.
> Set realistic delivery and completion timelines: Decommissioning a power plant is a complex process. The initial timeline to complete the process for Al-Kamil was one year, which was the best estimate at the time as there were no benchmarks or references in Oman. However, the actual completion time turned out to be three years – longer than the approximately 2.5 years it took to build the plant, from the start of construction in early 2001 to full commercial operation in July 2003.
Realistic delivery dates should be set for contractors, suppliers and others involved in the decommissioning process. This is likely to result in better pricing, as bidders tend to factor in higher contingencies with shorter or fast-track delivery dates. More realistic delivery dates also help management to allocate staff resources and manage the decommissioning budget.
Finally, realistic delivery dates help to manage owner and shareholder expectations regarding project completion.
Given the experience with Al-Kamil, a reasonable decommissioning timeline for a power plant is probably close to the actual construction timeline for the plant involved.
> Allow time to maximise revenues from the sale of assets: The market value for Al-Kamil’s power assets was estimated at a value significantly higher than the prevailing scrap value. This was based in part on the value of similar gas turbine units, after adjusting for age, usage and other factors that affect the net market value. However, the company realised a much lower value, even after retendering the equipment sales in an effort to get a better price.
It appears that prices close to the market rate are only achievable if there is time to find a suitable buyer. This can take many months or even years – typically a longer time than the owners of power plants wish to take.
Moreover, as renewables continue to penetrate the market, there is less worldwide demand for used gas turbine units. Prevailing market supply and demand conditions also have a bearing on the sale price for secondary equipment, and this factor needs to be considered.
If time is of the essence, then power plant owners need to accept the fact that the expected revenues will likely be on the low side, although still higher than the scrap value of the assets.
Main image: Picture 1: Al-Kamil power plant as constructed; Picture 2: Post decommissioning
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