Imagine a stretch of ocean off the southern tip of Africa, where the waves hide one of the most talked-about oil frontiers in the world. If your mind measured that well enough you should be seeing the Orange Basin.
The Orange Basin, a vast geological formation named after the mighty river that marks the border between South Africa and Namibia, has suddenly become the stage for a high‑stakes energy drama.
Namibia has been basking in the spotlight for years now since that blockbuster discoveries by Shell and TotalEnergies, while South Africa is quietly positioning itself with exploration rights of its own.
So who really holds the reins here? Is the Orange Basin Namibia’s golden ticket, or does South Africa have just as much claim to its riches?
The answer isn’t as simple as drawing a line on a map. If it were so, there would be no need for this article. Just lean back and sip this story like coffee on a cold winter morning.
The Orange Basin
The Orange Basin is a major South Atlantic sedimentary basin off the coasts of Namibia and South Africa, named after the Orange River (which originates from Lesotho) that forms part of the border between the two countries.
According to the United Nations FAO, the basin covers a large deepwater area of 896,368 square km spread across four Southern African countries like Lesotho (3.4%), Botswana (7.9%), Namibia (24.5%) and South Africa (64.2%).
The basin, which covers 3% of the African continent, is subdivided into depocentres including the Walvis, Lüderitz and Orange sub-basins.
Exploration interest surged after two ultradeepwater discoveries in 2022 — Graff (Shell) and Venus (TotalEnergies) — which turned the basin into a hotspot for oil and gas activity and industry attention.
Prior to these recent finds, there were earlier discoveries on the basin such as the onshore/offshore Kudu gas discovery (1974), even though some finds have not largely undeveloped due to infrastructure and commercial constraints.
Estimates of in-place volumes are significant.
Certain prospectivity assessments point to large resources (of multi‑hundred-million‑barrel potential in some structures).
But deliverability and commercial viability remain uncertain and subject to further appraisal and testing.
Why commercial viability is difficult
Industry commentary since 2023–2024 has highlighted concerns about reservoir deliverability and limited public data on testing results, prompting debate over how quickly discoveries can be turned into producible reserves.
Key challenges that have hampered commercial development and production include:
- deepwater technical complexity
- high capital expenditure needs
- limited local infrastructure
- requirement for robust long‑lead project sanctioning
These practical and economic constraints mean that promising discoveries still face long lead times to first production unless operators secure favourable project economics and infrastructure solutions.
Who truly controls the Orange Basin?
The basin is often referred to collectively in industry reports, which can make it sound like one unified territory.
However, legal ownership is split. Namibia controls the Basin’s northern offshore section, while South Africa controls the southern section.
The Orange Basin is not exclusively “controlled” by either South Africa or Namibia alone. It is a shared geological basin that straddles both countries’ maritime territories.
While geologically continuous, it is politically and legally divided between the two countries’ exclusive economic zones (EEZs).
In other words, each nation controls and licenses exploration within its own offshore jurisdiction.
The truth we can’t dispute
The Orange Basin remains a frontier with high upside potential but material execution risk.
Future development works will determine whether the recent discoveries translate into sustained production and export volumes for Namibia and the region
However, the Orange Basin will likely involve parallel development in both countries, with Namibia currently leading due to recent high-profile oil discoveries.
These discoveries have attracted more global attention recently leading to the perception that Namibia (itself a former colony of South Africa) “controls” the Orange Basin’s riches.
South Africa’s portion of the Orange Basin remains highly prospective and under active exploration, though progress has been slowed by opposition from civil rights organizations and environmental groups.
In recent years, greens have played a significant role in curbing fossil fuel exploration across the country.