The proposed Thuli Moswa dam, a cross-border project between Zimbabwe and South Africa, aims to alleviate water scarcity in Limpopo, a major constraint on industrial growth. The dam, to be built near Thuli in Zimbabwe, would have a capacity of approximately 430 million cubic meters. This project is expected to support the development of the Musina-Makhado Special Economic Zone, a key industrial area near the Zimbabwean border. The zone's growth potential is currently hindered by a lack of reliable water supply.
The Thuli Moswa dam project has an estimated investment of around $500 million, or approximately R8.2 billion. Both governments are currently conducting feasibility studies and have not yet concluded formal negotiations. A joint feasibility study is being discussed, which would assess potential dam sites in Zimbabwe and water-transfer routes into Limpopo. This study would also define the technical, commercial, and legal framework for cooperation between the two countries.
According to Wisane Mavasa, spokesperson for South Africa's Department of Water and Sanitation, the two countries are exploring a commercial model where South Africa would pay Zimbabwe for water delivered. This would create a recurring revenue stream for Zimbabwe and a predictable supply cost for South Africa. A long-term water-purchase agreement would be crucial in making the project bankable and attractive to investors.
The project has the potential to attract private capital across various segments, including dam construction, water treatment, pipeline infrastructure, and industrial utilities. A durable water-purchase contract would improve revenue visibility for lenders and project sponsors, leading to tighter financing spreads. However, the cross-border structure of the project introduces execution complexity, requiring authorities to align water rights, environmental approvals, and currency arrangements across two jurisdictions.
The Thuli Moswa dam project would deepen economic integration between Zimbabwe and South Africa, connecting Zimbabwean water assets directly to South African industrial demand. This infrastructure pairing has clear commercial logic and has already attracted development-finance attention. The African Export-Import Bank and the Development Bank of Southern Africa have established a $20 million Joint Project Preparation Facility for infrastructure and industrial schemes across Southern Africa.
Investors and policymakers are advised to watch for three near-term signals: the formal launch of the joint feasibility study, agreement on a water tariff, and progress towards a binding bilateral framework between Harare and Pretoria. These developments would indicate progress towards making the project a reality. If successful, the Thuli Moswa dam would provide a reliable water supply to the Musina-Makhado Special Economic Zone, supporting industrial growth and economic development in the region.
The Musina-Makhado Special Economic Zone requires a dependable water source to support its manufacturing, processing, and logistics operations. The zone's industrial potential remains constrained without a reliable water supply. South Africa's share of the water supply from the Thuli Moswa dam could reach 90 million cubic meters per year, which would be allocated to the special economic zone. The project's success would have a positive impact on the regional economy and would demonstrate the potential for cross-border cooperation on infrastructure development.
Key points
- The Thuli Moswa dam project aims to address water scarcity in Limpopo, a major constraint on industrial growth.
- The project has an estimated investment of around $500 million and would support the development of the Musina-Makhado Special Economic Zone.
- A long-term water-purchase agreement would be crucial in making the project bankable and attractive to investors.
