The Indian government's resolve is to generate 175 GW of electricity from renewable energy by 2022 and increase the share of renewables in India's energy mix to 40 per cent by 2030. Of the 175 GW, 100 GW will come from solar, 60 GW from wind, 10 GW from biomass and 5 GW from small hydrop projects. Here is a broad snapshot of the challenge.