National Transmission Company South Africa and IDC Partner to Boost Local Manufacturing for Grid Expansion
On Monday, the National Transmission Company South Africa (NTCSA) and the Industrial Development Corporation (IDC) signed a Memorandum of Understanding (MoU) that seeks to strengthen South Africa’s domestic supply chain for transmission infrastructure. The agreement is tied to the Independent Transmission Projects (ITP) programme and is designed to support manufacturers of key grid components rather than directly finance the construction of new lines.
Background: The Transmission Development Plan 2025‑34
In October 2024, NTCSA unveiled the Transmission Development Plan (TDP) for 2025‑34, which outlines the construction of approximately 14,500 km of new transmission lines and a substantial increase in transformer capacity over the next decade. The plan estimates an investment requirement of around R440 billion, with a focus on reinforcing the network in the Western Cape, Eastern Cape and KwaZulu‑Natal provinces.
The TDP is viewed as a prerequisite for integrating new renewable generation and improving overall energy security. However, industry analysts have repeatedly highlighted supply‑chain bottlenecks—particularly for high‑voltage equipment such as transformers, insulators and specialised steel—as a risk to timely delivery.
What the MoU Covers
The IDC explained that the MoU creates a financing and technical‑assistance channel for local suppliers that meet NTCSA’s technical specifications. Eligible components include:
- Power transformers
- Insulators and bushings
- Transmission‑grade steel structures
- Conductors and overhead line fittings
- Other grid‑infrastructure items identified by NTCSA as “components of limited supply”
Both existing manufacturers and new entrants can apply for support, provided they demonstrate compliance with NTCSA’s quality and performance standards. IDC CEO Mmakgoshi Lekhethe emphasized that the initiative is “critical to supporting South Africa’s energy security and broader industrial development,” adding that the corporation stands ready to finance viable companies selected through the grid‑expansion programme.
Statements from Leadership
NTCSA CEO Monde Bala noted that the TDP will generate substantial demand for locally manufactured inputs. He said:
“This agreement is intended to support verified suppliers identified by the NTCSA through its procurement processes and equip them with technical expertise and potential financial support from the IDC to build sustainable capacity for the implementation of TDP projects. It will also strengthen supplier development, localization and industrialization.”
The IDC declined to disclose the exact size of the funding pool, but industry sources estimate the commitment could run into the billions of rand over the life of the TDP.
Link to the Independent Transmission Projects (ITP) Programme
The MoU follows the December 2025 announcement by Power and Energy Minister Kgosientsho Ramokgopa of seven internationally‑led consortia that have been pre‑qualified to bid for the first phase of the ITP procurement process. While the ITP focuses on attracting private investment for specific transmission corridors, the IDC‑NTCSA agreement aims to ensure that the domestic manufacturing base can meet the material needs of those projects.
As the IDC clarified, the MoU operates as a separate mechanism from the ITP financing structures, enabling local firms to scale up capacity and become reliable suppliers to the broader transmission expansion outlined in the TDP.
Why Local Capacity Matters
South Africa’s transmission network is a critical enabler for integrating utility‑scale solar, wind and storage projects. A robust local supply chain reduces reliance on imported high‑voltage equipment, shortens lead times, and can create skilled jobs in manufacturing hubs across the country. By targeting “components of limited supply,” the partnership directly addresses a recognized vulnerability in the national grid expansion plan.
Experts from the Council for Scientific and Industrial Research (CSIR) have previously warned that delays in transformer delivery could push back commissioning dates for new generation facilities by up to 18 months. Strengthening local production capability is therefore seen as a mitigating factor against such risks.
Looking Ahead
Both NTCSA and the IDC have indicated that the MoU will be reviewed annually to assess progress, adjust funding thresholds, and incorporate feedback from participating manufacturers. Stakeholders—including industry associations such as the South African Electrical Manufacturers Association (SAEMA) and labor unions—are expected to be consulted to ensure the initiative aligns with broader skills‑development and transformation goals.
As South Africa moves toward a more diversified and resilient power system, collaborations like this one underscore the importance of aligning infrastructure planning with industrial policy. By nurturing local manufacturing capacity, the country aims to secure not only its energy future but also to stimulate inclusive economic growth.
