Generator Energy Limitation Framework (GELF) Parameters

Request for Scheduled Generators to Submit Variable Generator Energy Limitation Framework (GELF) Parameters

Scheduled Generators are now required to submit their latest Variable Generator Energy Limitation Framework (GELF) parameters by 30 October 2020. Submissions must be made through GELF interface.

Submission of complete GELF parameters is mandatory under clause 3.7C (g) of the National Electricity Rules for all Scheduled Generators. These parameters are a vital input to the EAAP studies, which assess supply adequacy over a 24-month period under a range of scenarios. Please note that the EAAP is not limited to hydro resources. Generators should indicate all actual or forecast limitations on each scheduled unit’s generating capacity arising from constraints on any energy or fuel source.

Scheduled Generators should use the EAAP GELF Quarterly Submission User Interface (MMS_EAAP_GELF) to submit the Variable GELF parameters. This 2020 EAAP Report requires GELF Parameters to be submitted for a 24 month period commencing 1 October 2020 to 1 October 2022.

Access to EAAP GELF Quarterly Submission User Interface (MMS_EAAP_GELF)

This interface can be accessed by visiting the AEMO Markets Portal.

A guide for accessing the EAAP GELF User Interface can be found at: EAAP GELF Interface User Guide.

Participants are requested to contact AEMO Support Hub if difficulties are experienced in accessing MMS_EAAP_GELF.

Please note:

  1. The Capacity or Energy GELF parameters entered for each scenario should reflect the monthly forecast generation capability in that scenario and not the generation capability reduction for the scenario.

  2. The three Rainfall Scenarios to be considered in submitting GELF parameters are:

    • Low rainfall scenario - Variable GELF parameters for power stations located in Queensland, Victoria, South Australia and Tasmania should be based on the rainfall experienced between 1 July 2006 and 30 June 2007. The Variable GELF parameters for power stations located in New South Wales should be based on the rainfall experienced between 1 June 2006 and 31 May 2007.
    • Short-term average rainfall - Variable GELF parameters should be based on the average rainfall recorded over the past 10 years.
    • Long-term average rainfall - Variable GELF parameters should be based on the average rainfall recorded over the past 50 years, or the longest period for which rainfall data is available should this be less than 50 years.

 

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