The renewable energy certificate (REC) market, after being in operation for only over a year, has already come a long way. Its market value, that is, the total value of REC's cleared, peaked at Rs 632 million in February 2012, compared to a mere Rs 585,000 in March 2011 when the first RECs were traded in India.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/rec-trading-trends
[2] http://admin.indiaenvironmentportal.org.in/category/author/tarun-tahiliani
[3] http://admin.indiaenvironmentportal.org.in/category/journal/renewable-watch
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/renewable-energy
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india