Data from information provided by Ofgem on the ROC register.
The register is continually being updated by Ofgem as returns are received from the industry. There is usually a delay between the month when the energy was generated and when the information is made available on the register of three or four months, in the majority of cases.
However if the return from the generator is not punctual the date of issue of the ROC can be almost two years after the month in which the energy was generated. Ofgem update the register as returns from the generator are received. For this reason each file notes the most recent date of ROC issue for the period covered.
Download original document: “UK Windfarm Output Statistics (Ofgem ROC data)”
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