By: ESI Africa

The panellists, representing Namibia’s Green Hydrogen Research Institute and South Africa’s Northern Cape Economic Development Agency, stressed that water availability is a critical consideration in scaling up Africa’s hydrogen economy.

This is especially pertinent given the process relies on electrolysis, which splits water molecules using renewable energy.

Er Zivayi Chiguvare, Director of Namibia’s Green Hydrogen Research Institute, explained that despite the country’s arid interior, its long Atlantic coastline and high solar irradiation offer a strategic advantage. 

“We intend to use seawater, desalinate it using solar energy, then use the purified water for electrolysis,” said Chiguvare. 

Why desalination is crucial to the hydrogen pipeline

He pointed to existing infrastructure such as the Orano desalination plant and new inland pilot projects where borehole water is being treated for hydrogen production and agriculture.

Similarly, South Africa’s Northern Cape province – home to the Boegoebaai green hydrogen development – is banking on desalination to power its future hydrogen exports. 

Shawn Modise, acting CEO of the province’s economic development agency, said strategic environmental assessments are under way to identify infrastructure with minimal marine impact.

“We are intentionally planning for desalination facilities that are oversized, not only to serve industry but to create potable water surplus for surrounding communities,” said Modise. 

This includes support for subsistence farming and bulk infrastructure upgrades in towns such as Alexander Bay and Port Nolloth.

Both speakers emphasised the need for water sustainability and regulatory compliance, especially as much of the green hydrogen produced will be destined for export markets. 

While electrolysis consumes relatively little water, cooling systems and processing infrastructure require a stable and sustainable supply.

Africa’s hydrogen ambitions, the speakers suggested, will rise or fall on how smartly the continent manages its water reserves.