To promote the use solar energy in the state Rajasthan government has issued orders to use the solar water heating system in the certain categories of buildings.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/solar-heating-systems-non-starter-despite-stiff-penalties
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-jaipur
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-energy
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-water-heaters
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/municipal-corporation
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/electricity
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-policy
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/renewable-energy
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rajasthan