South African economic growth could be severely stunted if carbon taxes are widely imposed on its exports, according to a new report by the country’s central bank. The South African Reserve Bank (SARB) said the hit could reach 10% of exports and more than 9% of gross domestic product in 2050 under a worst-case scenario in which carbon taxes are slapped on all exports by all trading partners. But it also found the impact could be much lighter, in a summary of several studies into the implications of the European Union’a new Carbon Border Adjustment Mechanism on South African exports.