Till recently Tamil Nadu was synonmous with wind power. Now, the new government in the state has decided to give impetus to solar as well.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/suns-chennai
[2] http://admin.indiaenvironmentportal.org.in/category/author/ritu-gupta
[3] http://admin.indiaenvironmentportal.org.in/category/journal/energy-next
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-energy
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-policy
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/renewable-energy