JOHANNESBURG, Aug 28 – South Africa is preparing to enter the sovereign green bond market, with the National Treasury targeting a debut issuance as early as the current fiscal year as the government seeks to mobilise financing for the country’s growing climate and infrastructure requirements.
Wanga Cibi, chief director for liability management at the National Treasury, said the government is aiming to complete the issuance before the end of March 2027, although the timing will depend on market conditions and the outcome of the government’s mid-term budget process. “Aspirationally, we would like to issue something within this fiscal year, so we’ve got from now until March 2027,” Cibi said. “If not, definitely in the 2027-28 fiscal year.”
The proposed bond forms part of a broader strategy to diversify South Africa’s sources of government financing while attracting investors focused on environmental, social and sustainability-linked assets. Treasury officials are currently identifying projects that could qualify for funding under the country’s sustainable-finance framework, which was unveiled in May.
Green Bond to Finance Climate and Infrastructure Pipeline
Under the framework, proceeds from the inaugural green bond could be directed toward projects supporting South Africa’s energy transition and broader infrastructure development.
Potential investments include hydrogen production, hydropower, geothermal electricity and bioenergy, alongside electricity transmission infrastructure and systems supporting renewable and low-carbon gases.
The framework also identifies water security, energy-efficiency technologies and renewable-energy distribution networks as potential areas for financing. Beyond physical infrastructure, proceeds could support worker reskilling and employment programmes for people affected by the transition away from coal.
Public healthcare, education and housing projects aimed at lower-income communities are also eligible under the framework, expanding the potential use of proceeds beyond conventional climate infrastructure.
Treasury is expected to make a final determination on the size and timing of the inaugural transaction as part of the medium-term budget statement scheduled for October. Market conditions will also influence the decision.
R3.7 Trillion Climate Financing Requirement
The scale of South Africa’s financing challenge is substantial. Under the sustainable-finance framework, meeting the country’s environmental commitments is estimated to require approximately R250 billion for implementation between 2026 and 2035, alongside R3.47 trillion for mitigation strategies.
Combined, the financing requirement amounts to roughly R3.7 trillion over the decade, equivalent to an average of about R372 billion annually. South Africa aims to mobilise approximately R160 billion a year from international climate-finance institutions by 2030. The balance is expected to come from domestic and international private-sector financing as well as government expenditure.
The proposed green bond is therefore intended not only as a source of funding, but also as a mechanism for bringing additional pools of institutional capital into South Africa’s climate transition.
Treasury Weighs Domestic and International Markets
The government has not yet determined whether the first sovereign green bond will be issued domestically or in international markets.
Cibi said South Africa could consider issuing the instrument in either local currency or in international markets through euro- or dollar-denominated debt. “We can opt to do either a domestic or even a foreign euro- or dollar-denominated issue, which will attract an even bigger base of investors, so I really think it is quite ambitious,” she said.
South Africa is targeting the mobilisation of as much as $8 billion annually by 2030 through a combination of public, private, domestic and international capital.
The government is also seeking to use sustainable-finance instruments to broaden its investor base and potentially lower overall borrowing costs. The sustainable-finance framework establishes governance requirements intended to give investors greater visibility into how proceeds are allocated and ensure that financed projects remain aligned with national development priorities.
Investors See Potential Pricing Advantage
The potential cost advantage of green and other sustainable bonds is another factor supporting the government’s strategy. Nigel Beck, head of sustainable finance and ESG at Rand Merchant Bank, which assisted in developing South Africa’s sustainable-finance framework, said sustainable issuances have generally achieved stronger pricing in several corporate transactions.
“What we have seen on a number of corporate bonds that we’ve worked on with clients, generally sustainable issuances…. that is, green and social issues will price better,” Beck said.
He added that substantial pools of capital, particularly among international investors seeking hard-currency sustainable assets, could increase demand for South African green debt. “There are significant pools of capital, locally and especially globally in hard currency, that are looking for sustainable finance instruments and you’re able to crowd in those pools of capital,” Beck said.
Higher demand could increase bond oversubscription and potentially reduce the government’s borrowing cost, making the green bond attractive not only as a climate-financing instrument but also as part of South Africa’s broader debt-management strategy.
