Kumba signs 20-year solar power deal to cut costs, emissions at Sishen mine

Kumba Iron Ore Limited, the world’s fifth-largest iron ore supplier, led by South African executive Mpumi Zikalala, has entered a long-term renewable energy agreement aimed at lowering electricity costs and reducing emissions at its flagship Sishen mine, marking a significant step in its transition toward cleaner energy.

The Johannesburg-listed miner, part of Anglo American plc, said its subsidiary Sishen Iron Ore Company (SIOC) signed a 20-year Energy Offtake Agreement (EOA) with Envusa Energy Proprietary Limited to secure embedded solar power supply from a new on-site photovoltaic (PV) facility.

Solar project to reshape Sishen energy mix

The Sishen Solar PV plant will deliver an installed capacity of 72.5MWp (DC), supplying about 63MW (AC) of electricity to the mine. The project is expected to begin delivering its first power, described as “green electrons”, in the fourth quarter of 2027.

Once operational, the facility will significantly increase Kumba’s renewable energy footprint. Combined with the 11MW of wheeled renewable power already supplying its Kolomela mine, the company expects renewable energy to account for approximately 45% of its total energy mix.

At steady state, the solar project is projected to displace around 35% of Sishen’s Scope 2 emissions, reinforcing Kumba’s broader decarbonization strategy.

Cost savings and long-term energy security

The agreement is also designed to improve cost efficiency. Kumba said the solar energy supplied under the deal currently represents about a 30% saving compared to prevailing Eskom tariffs, although actual savings will depend on future tariff movements.

Electricity pricing under the EOA follows standard independent power producer (IPP) structures, factoring in capital investment, operating costs, and expected returns over the contract period.

The deal includes a take-or-pay structure, performance guarantees from Envusa Energy, and provisions ensuring continued returns even if the Sishen mine’s life is not extended beyond current reserves.

Leadership outlines decarbonization push

Kumba CEO Mpumi Zikalala said the project strengthens the company’s pathway to a lower-carbon future.

She noted that the solar initiative, alongside existing renewable supply at Kolomela, supports Kumba’s ambition to cut greenhouse gas emissions by 28% by 2030, aligning with Anglo American’s broader climate targets.

Governance and regulatory compliance

Given that Envusa Energy is jointly owned by Anglo American and EDF Power Solutions, the transaction qualifies as a related-party deal. However, the JSE Limited confirmed the agreement falls within the ordinary course of business.

Kumba’s independent board committee reviewed the transaction, supported by external legal, technical, and financial advisors, and concluded that the agreement was negotiated on an arm’s length basis.

Strategic shift toward cleaner mining

Kumba, a leading supplier of high-grade iron ore to global steel markets, operates major mining assets at Sishen and Kolomela in South Africa’s Northern Cape. The company exports to key markets including China, Japan, and Europe.

The solar deal underscores a broader shift within the mining industry toward integrating renewable energy into operations, driven by rising power costs, sustainability pressures, and global decarbonization trends.

As Kumba advances its energy transition strategy, the success of the Sishen solar project will be critical in balancing cost competitiveness with environmental responsibility in an increasingly carbon-conscious global economy.