The Renewables Obligation (RO) is the main support scheme for large-scale renewable electricity projects in the UK. Smaller scale generation is mainly supported through the Feed-In Tariffs (FiT scheme).
The RO came into effect in 2002 in England and Wales, and Scotland, followed by Northern Ireland in 2005. It places an obligation on UK electricity suppliers to source an increasing proportion of the electricity they supply from renewable sources
The RO will close to all new generating capacity on 31 March 2017. There are also a number of early closures which are in force for specific technologies. Generators who are eligible to apply for a grace period can gain entry to the RO after these closures for a specified amount of time. More information on the 2017 closure and early closures is on the RO closure page.
A Renewables Obligation Certificate (ROC) is a green certificate issued to an accredited generator for eligible renewable electricity generated within the United Kingdom and supplied to customers within the United Kingdom by a licensed electricity supplier. The value of ROCs varies - an indication of values can be found below: