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.