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In a major milestone for sustainable infrastructure, Rolls-Royce and Duisburger Hafen AG have inaugurated a fully CO₂-neutral and self-sufficient energy system at the new Duisburg Gateway Terminal

Officially launched at the beginning of July 2025, this pioneering installation sets a new benchmark for integrated green energy solutions in logistics.

At the core of the system are two mtu combined heat and power (CHP) plants, developed for 100% hydrogen operation and deployed here for the first time globally. Supporting technologies include an mtu battery storage system, mtu hydrogen fuel cells, and a 1.3 MWp photovoltaic (PV) array — all integrated by a sophisticated energy management system.

The installation forms part of the Enerport II lighthouse project, funded by Germany’s Federal Ministry of Economics and Energy. It is seen as a blueprint for future sustainable energy systems at ports, industrial complexes, and infrastructure facilities. Project collaborators include the Fraunhofer Institute UMSICHT, Westenergie Netzservice GmbH, Netze Duisburg GmbH, Stadtwerke Duisburg AG, and Stadtwerke Duisburg Energiehandel GmbH.

Dr Jörg Stratmann, CEO of Rolls-Royce Power Systems, commented, “The opening of this CO2-neutral energy system at the Duisburg Gateway Terminal is a milestone on the way to a more climate-friendly, resilient energy supply. Together with our partner duisport, we will show how scalable technologies from Rolls-Royce can contribute concretely to the transformation of critical infrastructures and thus also to the implementation of the energy transition.”

Markus Bangen, CEO of Duisburger Hafen AG, emphasised, “Sustainability is an integral part of our corporate strategy and thus obligation to act responsibly and forward-looking. With this self-sufficient and CO2-neutral energy system, we also have a clear competitive advantage.”

Hydrogen-powered port

The intelligent microgrid provides energy for the 33-football-field-sized terminal, supplying crane systems, charging stations, and shore power. When solar output from the PV system exceeds demand, the surplus is stored in the mtu EnergyPack. In periods of low sunlight, mtu hydrogen CHP units and fuel cell systems ensure a stable, emission-free supply.

Alexander Garbar, head of corporate development at Duisport, noted,“Our microgrid runs reliably and shows that it is possible to supply such a large port terminal completely independently with green energy.”

Rolls-Royce’s involvement in the Enerport II project also marks the debut of its newly enhanced 12-cylinder mtu Series 4000 gas engines, now running on 100% hydrogen. Each engine delivers 1MW of output and demonstrates impressive performance, efficiency, and emissions results — continuing the legacy of mtu power systems.

Looking ahead, Rolls-Royce is collaborating with research centres and industry partners to develop next-generation hydrogen combustion engines capable of reaching power levels of up to 2.5MW, matching today’s larger natural gas CHP plants.

“As part of the expansion of renewable energies, the German government has decided to build further gas-fired power plants with the power plant strategy. Modular gas-fired power plants and smaller, decentralized gas engine systems can compensate for the feed of wind and solar power into the grid, which fluctuates depending on the weather, and efficiently contribute to ensuring security of supply. Rolls-Royce mtu gas engines already provide reliable power and heat supply in many places in Europe. In the UK, even a fleet of more than 500 mtu gas units supports the UK energy transition. Once sufficient availability of green hydrogen is ensured, mtu gas units such as in Duisburg can also contribute significantly to CO2 reduction with 100% hydrogen or even with a hydrogen admixture,” remarked Michael Stipa, senior vice-president of business development and product management for stationary energy solutions at Rolls-Royce.

The project showcases how advanced hydrogen-ready technologies, combined with intelligent systems and public-private collaboration, can power industrial progress while supporting global climate goals.

Also read: Transforming utilities: DEWA’s digital roadmap with Microsoft

ACCIONA, along with local firm DHCU, obtained an €35mn (US$38.15mn) contract from Egypt’s Construction Authority for Potable Water and Wastewater (CAPW) so it can operate and maintain Phase II of Cairo's Gabal El Asfar wastewater treatment complex.

The eight-year agreement rehabilitates also upgrades two major plants within the facility so that they can each treat 500,000 m³ per day.

Gabal El Asfar is known to be the largest wastewater treatment complex located in Africa as well as the Middle East. This ranks it third globally, with a total capacity of 2.5 m³ per day.

Home to more than eight million residents, it serves the vital eastern part of Cairo.

ACCIONA’s already established footprint is further reinforced by this latest contract within Egypt’s water sector.

The company led the design, construction, and commissioning in a previous expansion phase at Gabal El Asfar in 2013, adding another 500,000 m³ to its daily capacity.

ACCIONA and DHCU were entrusted not too long ago in 2022 for Phase I's operation and improvement that handles 1.5 m³ of wastewater for each day.

Other developments

Beyond Gabal El Asfar, ACCIONA has partnered together with CAPW on additional projects, and this includes the water infrastructure operations for New Cairo.

The initiative collects water from the Nile River and then transports the water. It then purifies the water and distributes to consumers in the satellite city 30 kilometers east of the capital.

The company constructed five other major drinking water treatment plants throughout Egypt.

The Almerya, Rod el Farag, Mostorod, North Helwan I, and North Helwan II plants serve collectively over six million people because they have a combined capacity that exceeds 600,000m³ per day.

Within ACCIONA’s portfolio is the Bahr Al Baqr wastewater treatment plant. It is actually another key project that is located in northwestern Egypt.

It has 5.6 m³ capacity as one of the world’s largest, designed for high-quality water production for agricultural irrigation.

Additionally, ACCIONA operates several other wastewater facilities in Egypt as these facilities include those located in Abnoub-El Fath, Sodfa-El Ghanayem, El Ayat, and Abu Simbel.

Sustainable infrastructure and renewable solutions are led by ACCIONA globally.

They have been keeping to carbon neutrality since back in 2016.

Operations are maintained in more than 40 countries, also the company reported €19.19bn (US$21bn) in sales for 2024.

Also check out:

MENA platform aims to enhance clean water accessibility

Water diplomacy: how UAE supports island nations' water security

Saudi Arabia's NWC takes on multiple wastewater projects

The International Code Council (ICC) looks at how the construction landscape in the GCC is changing, especially with smarter materials, cooling, and policy changes. 

Behind the GCC's towering structures and landmark megaprojects lies a critical question: how can the region build in a way that is not only transformative but also sustainable?

As urbanisation intensifies, construction is under mounting pressure to evolve. Sustainability is no longer optional, it is essential. The choices made today will shape the resilience and livability of tomorrow’s cities.

To meet this challenge, governments and developers across the region are actively rethinking how buildings are designed, constructed and operated.

From low-carbon materials to pioneering technologies and updated regulations, the GCC is making bold moves to create a greener built environment.

A major focus is on improving energy efficiency, particularly through smarter cooling.

In a region where air conditioning can account for up to 70% of a building’s energy use, upgrading HVAC systems is both an environmental and financial imperative.

This has spurred the adoption of passive cooling techniques, better insulation, and demand-driven systems powered by renewables, enabling climate control with a lighter carbon footprint.

Green materials

The materials used in construction are also undergoing a transformation.

Concrete, long the backbone of GCC development, is now being refined with low-carbon alternatives and advanced admixtures to reduce emissions without compromising strength or durability.

This shift is being accelerated through regional standardisation and innovation in cement technology.

In parallel, the GCC, particularly the UAE, is leading a global push toward 3D-printed buildings.

These structures reduce material waste, speed up project timelines, and allow for complex, custom designs. They represent a fundamental reimagining of how construction can be more efficient, scalable and sustainable.

Underpinning these efforts are national climate policies like the UAE Net Zero 2050 and Saudi Arabia’s Vision 2030 and Green Initiative.

These frameworks are driving practical action, not just policy statements, supported by updated building codes and new training pathways for professionals.

Programmes from bodies such as the International Code Council (ICC) are equipping the workforce with the skills needed to meet increasingly ambitious environmental standards.

The GCC’s approach to sustainable construction is comprehensive: it combines innovation, policy, and people. In doing so, the region is not just keeping pace with global trends, it is setting new ones.

Through its commitment to smarter, cleaner, and more responsible building, the GCC is demonstrating that environmental stewardship and architectural progress can, and must, go hand in hand.

Also read: ICC to showcase global building safety standards in Egypt

Alcoa Corporation has finalised the sale of its 25.1% stake in the Ma’aden joint venture to Saudi Arabian Mining Company (Ma’aden), marking a strategic exit from the integrated mining complex the two companies launched in 2009.

The transaction was completed under a binding share purchase and subscription agreement.

In exchange, Alcoa received around 86 million Ma’aden shares, valued at approximately US$1.2bn, alongside US$150mn in cash, which will primarily be used to cover taxes and transaction costs.

The company expects to report a gain of roughly US$780mn under other income for the third quarter of 2025.

In line with past asset sales, this gain will be recorded as a special item.

Saudi mining growth

Alcoa, which is based in Pittsburgh in Pennsylvania, is a global leader in bauxite, alumina, and aluminium products. It will now hold an estimated 2% of Ma’aden’s outstanding shares.

As stipulated in the agreement, these shares must be retained for a minimum of three years, with one-third eligible for sale after each of the third, fourth, and fifth anniversaries of the transaction’s closing.

However, under certain conditions, Alcoa is allowed to hedge or borrow against the shares during the holding period, and the lock-up may be reduced in specific scenarios.

The Ma’aden joint venture, established as a fully integrated aluminium production complex in Saudi Arabia, comprises the Ma’aden Bauxite and Alumina Company (MBAC) and the Ma’aden Aluminium Company (MAC).

Prior to the deal, Ma’aden held a 74.9% majority stake.

Citi served as Alcoa’s exclusive financial advisor for the transaction, while legal counsel was provided by White & Case LLP.

“While today marks the end of the Joint Venture, the closing of this transaction demonstrates the initial value to our shareholders and enables visibility within Alcoa’s financials until we monetize in the future,” said William F. Oplinger, Alcoa’s president and CEO.

“I thank Ma’aden’s leadership and the Kingdom of Saudi Arabia for their partnership over the last 16 years, and we look forward to continued engagement as Ma’aden shareholders.”

Also read: Power Metallic gets licensed to explore Saudi mineral belt

Teledyne Gas & Flame Detection (Teledyne GFD) has partnered with Industrial Detection Solutions (IDS) to establish a 699 m² manufacturing facility in Dammam, Saudi Arabia, marking a significant step towards localising production of advanced gas detection technologies in the Kingdom.

The facility, which opened on 19 June 2025, will produce high-precision sensors used in hazardous environments such as oil and gas drilling sites, LNG/CNG plants, and petrochemical facilities.

The initiative supports Saudi Arabia’s IKTVA programme, which encourages economic diversification and local supply chain development in the energy sector.

By bringing manufacturing closer to end users and suppliers, the partnership is expected to reduce lead times and enhance safety support across the region.

Key products to be produced at the new plant include Teledyne GFD’s DM-700 toxic gas sensor, and the FP-700 and IR-700 sensors for combustible gas detection.

These ‘smart’ sensors offer non-intrusive monitoring using electrochemical, catalytic bead, and infrared technologies, with robust designs that resist common causes of failure such as water ingress, corrosion, and vibration.

“Our new partnership with Industrial Detection Solutions ensures that manufacturing is closer to both customers and suppliers, enabling even faster delivery of class-leading gas detection products in support of more efficient supply chains,” said Thomas Moeller, VP Sales & Marketing at Teledyne GFD. “The proven solutions manufactured in KSA will better serve a vast regional industry that recognises the importance of a robust and prevalent safety culture. We are proud to be part of KSA’s remarkable ongoing journey of economic and industrial growth, and we look forward to a successful future together.”

Teledyne GFD recently also introduced the PS DUO, a new portable dual-gas detector designed to improve personal safety in hazardous environments. The compact handheld device can detect two gases simultaneously using passive diffusion sensing, and features real-time monitoring with audible, visual and vibrating alarms to alert users when gas levels exceed safe limits.

The PS DUO offers a broad selection of gas combinations including carbon monoxide (CO), hydrogen sulphide (H₂S), sulphur dioxide (SO₂), ammonia (NH₃), oxygen (O₂), hydrogen (H₂), nitrogen dioxide (NO₂), and ozone (O₃). Its ATEX/IECEx rating and 2-year warranty make it ideal for industrial settings. Users can select gas pairings tailored to their specific applications, such as H₂S and SO₂, particularly relevant in Middle Eastern operations.

The detector features a bright LCD screen displaying continuous gas concentration, wireless connectivity for easy data transfer, and internal memory capable of storing 30 alarm logs. Housed in a rugged IP67-rated rubberised casing, the PS DUO is lightweight (200g), ergonomic, and designed for comfort and ease of use in demanding environments. It runs for up to two years on a single replaceable battery.