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The study finds that new coal-fired power plants are not necessary to meet South Africa's electricity demand at the lowest cost and that their inclusion would substantially increase both system costs and greenhouse gas emissions. Using the South African Times Model (SATIM), the authors demonstrate that a least-cost build plan relies on wind, solar PV, and gas, while the coal IPPs would create a generation surplus and potentially accelerate Eskom's financial crisis. The report highlights that the emissions from these plants would almost entirely offset the savings from the National Energy Efficiency Strategy or the carbon tax, complicating South Africa's ability to meet its Paris Agreement commitments.