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Creating and registering large-scale generation certificates

15 May 2017

Under the Large-scale Renewable Energy Target, eligible renewable electricity generated by accredited power stations may be entitled to large-scale generation certificates (LGCs).

All large-scale generation certificates must be created by 31 December the year after the electricity was generated.


To ensure large-scale generation certificates are valid, they must be created by the end of the calendar after the electricity was generated. For example, for electricity generated in the 2015 calendar year, large-scale generation certificates must be created on or before
31 December 2016.

Large-scale generation certificates with different ene​rgy sources and for different months must also be created separately.

Before creating and registering large-scale generation certificates

Before creating and registering large-scale generation certificates please ensure:

  • The power station is accredited with the Clean Energy Regulator
  • You have read the LGC eligibility formula
  • The person creating the certificates is using a valid REC Registry account, with relevant accredited power station(s) attached to it
  • If you are creating LGCs for the first time, please read the documentasset:LGC validation questions and submit your responses to LGC Validation.
  • You have prepared the correct documentation to support the creation of the certificates, including:
    • generation data (recorded by electricity meters) which accurately measures the amount of electricity generation by the power station (ideally collected in half hour intervals from the revenue meter)
    • for power stations using multiple fuel sources:
      • auditable trail of documentation for the origin of the fuel sources used at the power station
      • the amount of fuel consumed, and
      • characteristics of the fuels, such as the calorific (heating) value and moisture content, and
    • any other documentation that may assist to calculate and verify the amount of eligible electricity generated and auxiliary power consumed by the power station.
  • You have the:
    • power station name
    • generation year
    • generation month
    • fuel source, and
    • number of LGCs to create.

See the step-by-step guide to creating LGCs and guide for registering LGCs in the REC Registry.

Over or under crediting of certificates

See the Clean Energy Regulator's approach to dealing with over and under crediting of certificates or units in the Large-scale Renewable Energy Target.

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