Renewable Energy Certificates (RECs) are a policy mechanism to promote renewable energy based power geenration in India. Technologies such as wind, solar PV, solar thermal, biomass and hydro are eligible to earn RECs. Such schemes exist successfully in several parts of the world such as Europe, USA and Australia.
The Indian government's Forum of Regulators has published the list of states that have finalised regulations and preparation for the Renewable Energy Certificate (REC) Trading scheme. States that have made progress on regulations over past one month include Bihar, Assam, Kerala, Madhya Pradesh, Orissa and Tamil Nadu.
REC is a mechanism being mooted by the Central Electricity Regulatory Commission (CERC) and is likely to play a pivotal role in achieving the target of 10% renewable by 2015 as per India's National Action Plan on Climate Change.
Sources http://www.climate-connect.co.uk
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Below find a brief description and graphical representation of the CDM project activity project cycle.