India does indeed look like "a tough nut to crack." But some significant announcements are expected when President Obama visits there next week. I feel certain it will improve the clean energy numbers projected for that country up to now!
According to the linked article, you should not expect India to commit to a peak year for carbon emissions anytime soon (see extract below).http://in.reuters.com/article/2015/01/25/india-obama-climatechange-idINKBN0KY0F920150125
Extract: "India, the world's third largest carbon emitter, is reluctant to follow the United States and China in committing to a peak year for emissions on the grounds it needs economic growth to alleviate poverty."
Furthermore as I have pointed-out before, economists understand that it will take many decades before renewables can replace fossil fuels in developing countries like India, Indonesia and the Philippines (see attached graph); and in the meantime the world's carbon budget is going bankrupt:
Michael Jakob, Jan Christoph Steckel, Stephan Klasen, Jann Lay, Nicole Grunewald, Inmaculada Martínez-Zarzoso, Sebastian Renner & Ottmar Edenhofer , (2014), "Feasible mitigation actions in developing countries", Nature Climate Change, Volume: 4, Pages: 961–968, doi:10.1038/nclimate2370http://www.nature.com/nclimate/journal/v4/n11/full/nclimate2370.html
Abstract: "Energy use is not only crucial for economic development, but is also the main driver of greenhouse-gas emissions. Developing countries can reduce emissions and thrive only if economic growth is disentangled from energy-related emissions. Although possible in theory, the required energy-system transformation would impose considerable costs on developing nations. Developed countries could bear those costs fully, but policy design should avoid a possible 'climate rent curse', that is, a negative impact of financial inflows on recipients' economies. Mitigation measures could meet further resistance because of adverse distributional impacts as well as political economy reasons. Hence, drastically re-orienting development paths towards low-carbon growth in developing countries is not very realistic. Efforts should rather focus on 'feasible mitigation actions' such as fossil-fuel subsidy reform, decentralized modern energy and fuel switching in the power sector."