The Tamil Nadu government has installed around 90,000 green houses with solar roof and around 20,000 street lights through solar power since 2011.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/tamil-nadu-completes-90000-solar-roof-houses
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-standard-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/green-buildings
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-energy
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/renewable-energy
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-efficiency
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ecosystems
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment