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The report argues that traditional economic tools, such as cost-benefit analysis and equilibrium models, are inadequate for the structural changes required by the energy transition. It proposes a shift toward 'Risk-Opportunity Analysis' and dynamic modelling that accounts for induced innovation and learning-by-doing. Based on successes in solar PV, LED lighting, and wind power, the authors outline ten principles for policymaking, emphasizing targeted investment, risk management, and adaptive policy packages. National case studies in Brazil, China, and India suggest that while decarbonisation has a negligible impact on overall system costs and GDP, the transition requires significant up-front investment and careful management of distributional impacts, particularly in coal-dependent regions.