South Africa’s Coega Green Ammonia Project has moved closer to execution after project developer Hive Hydrogen selected Topsoe A/S to provide approximately $1 billion worth of electrolyzer and ammonia synthesis equipment.
The project, located at the port of Coega in South Africa’s Eastern Cape province, aims to produce 1 million metric tons of green ammonia annually by 2030. Developed jointly by Hive Energy Ltd. and South African infrastructure firm BuiltAfrica Group, the facility is expected to cost roughly $5.8 billion, placing it among Africa’s largest planned green hydrogen investments.
The scale of the development reflects intensifying competition among African countries seeking to position themselves as future exporters of hydrogen derived products. South Africa, Namibia, and Morocco have all leveraged high solar irradiation levels, strong wind resources, and proximity to maritime export routes to attract international interest. However, many announced projects across the continent remain speculative, constrained by financing risks, infrastructure limitations, and uncertain long term demand pricing.
Coega stands out partly because of its relative maturity. Project developers said the facility is entering its final development phase, with Front End Engineering Design expected to begin in the third quarter of 2026 and a Final Investment Decision targeted for the third quarter of 2027. Even so, the timeline illustrates the slow pace of large scale hydrogen commercialization. Most global projects announced during the early hydrogen investment cycle of 2020 to 2022 are still navigating permitting, power procurement, water supply agreements, and export infrastructure planning.
At the core of the Coega project is an 850 megawatt electrolyzer system based on Topsoe’s Solid Oxide Electrolyzer Cell technology. Solid oxide electrolyzers operate at high temperatures and can theoretically achieve higher electrical efficiency than conventional alkaline or PEM systems because part of the energy requirement is supplied as heat rather than electricity. In industrial applications where waste heat integration is available, efficiency gains can materially reduce renewable power demand.
That efficiency claim is central to the project’s economic positioning. Hive Energy chief executive Giles Redpath stated that Topsoe’s technology could reduce renewable energy capital expenditure by more than €0.5 billion. Given that renewable electricity generation typically represents the largest cost component in green hydrogen production, improvements in electrolyzer efficiency can significantly affect project viability.
Yet efficiency gains alone may not resolve the sector’s larger commercial challenge. Green ammonia remains substantially more expensive than conventionally produced ammonia derived from natural gas or coal. Current global ammonia benchmark prices fluctuate widely depending on natural gas markets, but green ammonia production costs generally remain well above fossil based alternatives absent carbon pricing mechanisms or subsidies.
Hive Hydrogen expects to produce green ammonia at an export sales price of roughly $650 per metric ton. Whether that pricing proves competitive by 2030 will depend heavily on future carbon regulations, shipping decarbonization mandates, and industrial demand from countries such as Japan and South Korea, both identified by the developers as target export markets.
Japan and South Korea have emerged as early demand centers because both countries face structural constraints in domestic renewable energy generation and are pursuing imported low carbon fuels for power generation, shipping, and industrial applications. However, long term offtake commitments across the hydrogen sector have generally progressed slower than project announcements. Buyers remain cautious about committing to large volume contracts while production costs remain uncertain.
The Coega project also highlights broader infrastructure questions surrounding hydrogen exports from emerging economies. Producing green hydrogen at industrial scale requires not only low cost renewable electricity but also transmission infrastructure, desalination or water management systems, export terminals, storage facilities, and reliable logistics networks. South Africa’s electricity sector continues to face grid instability and transmission bottlenecks, despite the country’s significant renewable energy potential.
Port infrastructure at Coega offers strategic advantages because of existing industrial development zones and export connectivity. Still, integrating an energy intensive electrolyzer system at this scale will require stable renewable power supply and substantial supporting infrastructure investments. Analysts have repeatedly identified transmission expansion and grid integration as major barriers to scaling green hydrogen production in southern Africa.
The project’s focus on ammonia rather than pure hydrogen reflects wider industry realities. Ammonia is easier to transport internationally using existing shipping infrastructure and already has established demand in fertilizer and chemical markets. As a result, many large hydrogen export projects are prioritizing ammonia synthesis as an intermediate carrier fuel rather than attempting direct hydrogen exports.
