On a per capita basis, India is one of the lowest emitters of greenhouse gases in the world, yet it is threatened by the impact of global warming and climate change. The Expert Group on Low Carbon Strategies for Inclusive Growth has evolved a macro-model to fully elucidate the inter-sectoral implications of different mitigation measures and ensure that the low carbon strategies being recommended are mutually consistent with each other. The model output is summarised through two endpoint scenarios: BIG (Baseline, Inclusive Growth) and LCIG (Low Carbon, Inclusive Growth). The report describes these models and the energy efficiencies of various sectors in detail.