1. World Development Indicatorhttp://data.worldbank.org/sites/default/files/wdi-2012-ebook.pdf
2. Energy for All Financing access for the Poorhttp://www.iea.org/media/weowebsite/energydevelopment/weo2011_energy_for_all.pdf
3. The Outlook for Energy: A View to 2040,2013
4. Dynamics of rural energy access in India: An assessment
5. Understanding Energy Challenges in Indiahttp://www.iea.org/publications/freepublications/publication/India_study_FINAL_WEB.pdf