Voltalia has completed the 148-megawatt Bolobedu Solar Plant in Limpopo, adding one of South Africa’s largest privately contracted solar supply projects to the national grid. The plant is designed to generate roughly 300 gigawatt-hours of electricity each year under a long-term corporate power purchase agreement with Richards Bay Minerals, a subsidiary of Rio Tinto.
The structure of the agreement matters as much as the capacity itself. Electricity from the plant is delivered through Eskom’s transmission network using a wheeling arrangement. That allows a private generator to supply a remote industrial customer without building dedicated transmission infrastructure. It is a model gaining momentum in mining regions where companies want predictable electricity supply without waiting for new grid capacity to be built.
For mining operations, energy reliability is a production constraint. Bolobedu is expected to reduce annual carbon emissions by more than 237,000 tonnes while supporting Richards Bay Minerals’ long-term operations, including development work linked to its Zulti South expansion programme. The agreement reflects how mining companies are restructuring their power supply strategies around independent renewable generation rather than relying solely on the national utility.
Construction of the project employed roughly 800 workers from surrounding communities. Training covered installation support roles and safety procedures required for utility-scale solar deployment. Voltalia also partnered with two local women investors, making the project the first large renewable installation in South Africa supported exclusively by female financiers.
This shift in ownership participation is becoming part of how infrastructure projects are evaluated nationally. In October 2025, Voltalia signed a partnership with International Finance Corporation to expand renewable energy supply solutions for mining operations across Africa. The initiative focuses on combining solar, hybrid systems, storage, and long-term purchase agreements to reduce exposure to diesel and coal-based electricity.
South Africa’s electricity system still depends heavily on coal generation. Corporate renewable procurement is now helping change that balance faster than utility-scale reform alone. Bolobedu shows how private power contracts are reshaping industrial electricity supply across the country.
By Thuita Gatero, Managing Editor, Africa Digest News. He specializes in conversations around data centers, AI, cloud infrastructure, and energy.
