In calculating the crc emission factors with regards to electricity consumption within organisations and subject to the carbon reduction commitment, a five-year average emissions factor will be applied to all electricity. To this end, the same factor will be used to measure emissions from all organisations regardless of whether or not they purchased their grid electricity supply from a wind power, nuclear, coal powered or any other form of electricity generation scheme. However, if you produce your own on-site renewable electricity and you do not claim renewable obligation certificates, then you will be able to submit this use of electricity as zero emissions.If you claoim ROCs you will have to apply electriicty emissions at grid emission ratings.