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The Industrial Gas Users Association - Southern Africa (IGUA-SA) is warning of a gas supply 'day zero' for several large and small manufacturing enterprises and says that urgent decisions will be required within the coming four months if South Africa is to avoid a looming "gas cliff" within the coming 30 months.

Speaking during an EE Business Intelligence webinar convened to understand the outlook for gas energy security and the potential role for gas-to-power (GtP) in improving the outlook, IGUA-SA executive officer Jaco Human said the looming shortfall had arisen on the back of Sasol's announcement last year that it will be halting supply to downstream consumers from 2026. This, partly because it had failed to find sufficient reserves to replace an anticipated tapering of supply from southern Mozambique and partly because Sasol plans to use the remaining gas to displace coal at its own operations to support its decarbonisation.

IGUA-SA members, which include some of South Africa's largest manufacturing enterprises that collectively employ 65 000 people and have yearly combined revenues of over R300-billion, currently consume some 40 PJ/y of gas to produce everything from steel, glass and aluminium products to food and beverages.

Human suggested the most realistic supply option to be the importation and re-gasification of liquefied natural gas (LNG) at a new terminal, which is proposed for development at the Matola harbour in Maputo, Mozambique, given its relatively advanced state of development when compared with a proposed terminal at the Port of Richards Bay, in KwaZulu-Natal.

However, there were still significant timing risks, with a final investment decision on the $350-million terminal dependent on several offtaker and related infrastructure developments, including a tie-in to the existing Rompco pipeline, a connection between the Rompco and Lilly pipelines, as well as a GtP anchor offtaker.

"We literally have four months to switch on the landing lights on the development of gas infrastructure to substitute the shortfall in supply from 2026 onwards," Human asserted, warning of manufacturing and job casualties should these fail to materialise.

He also insisted that domestic gas demand could be sustained despite the inevitable price disruption that would arise from a switch from Mozambican gas to LNG but acknowledged that it would not be a pain-free transition, with some enterprises still likely to close.

Gigajoule CEO Jurie Swart said the Matola terminal, which could be built in partnership with TotalEnergies, was technically "shovel ready", as was an associated GtP project, but that offtaker commitments and policy decisions were still required to ensure financial close.

Rompco CEO Mlandzeni Boyce reported that the commercial viability of a tie-in project to connect the proposed Matola LNG terminal to the existing Mozambique-to-Secunda pipeline was under evaluation, with a front-end engineering design technical package having been completed in June last year.

"But Rompco will not take a final investment decision until bankable gas transmission agreements are concluded," Boyce stressed, adding that it would also seek adjustments to the tariff architecture to allow for distance-based tariffs.

POWER ANCHOR?

Swart made the case for LNG's price competitiveness relative to the fuel alternatives available to South African manufacturers, but also argued strongly for an anchor customer in the form of a GtP plant operating in Mozambique at a high capacity factor and selling power to South Africa.

The proposed solution would require a cross-border power purchase agreement and, thus, implied a major change to South African energy policy.

Such an outcome would likely prove controversial considering developments in the South African electricity market, where an inaugural GtP p...