Andhra Pradesh, Kerala, Maharashtra, Punjab and Rajasthan have emerged as the 'front-runner' states as per an energy efficiency index.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/andhra-kerala-maha-top-energy-efficiency-index
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-efficiency
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/andhra-pradesh
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kerala
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maharashtra
[7] http://admin.indiaenvironmentportal.org.in/thesaurus/bureau-energy-efficiency-bee
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy