Preliminary Engineering Feasibility Study: Organic Rankine Cycle (ORC) Waste-Heat-to-Power from HFO Boilers at EB Steam Lever Ponds Durban, South Africa This 47-page technical report assesses the technical and economic viability of recovering waste heat from Heavy Fuel Oil (HFO) boilers using an Organic Rankine Cycle (ORC) system at a soap manufacturing steam plant in Durban, South Africa. Based on detailed site operational data (2007–2013), the study models a nominal 200 kW ORC installation that generates an average of 173.88 kWel, covering 22 % of the plant’s auxiliary power demand (≈ 771 MWh/year) and reducing CO₂ emissions by 769 tonnes per annum.The report includes site profiling, flue-gas analysis, technology comparison (ORC vs. Kalina Cycle), supplier evaluation, cost recovery, and carbon mitigation analysis. Updated in 2026 for academic archiving with abstract, executive summary, historical note, and references.