In the context of a developing country such as India and of the global commitment to limit the temperature rise, this book provides a comprehensive and novel approach on framing the low carbon development pathways. Data plays a critical role in accurate assessment so it gives a stepwise detail on reconciling national accounting statistics with energy balance data. Further, it explains the setting up of technology optimization and economy-wide macroeconomic framing models. These models have limitations when used in isolation so the book further elaborates on the soft coupling process to overcome the limitations of using individual models. Detailed examples using case studies illustrate the application of structured approach to determine net zero pathways and business decarbonisation scenarios. Future applications for important development questions related to net zero analysis are also enumerated.