Szawg final report
Download
1 / 17

SZAWG Final Report - PowerPoint PPT Presentation


  • 58 Views
  • Uploaded on

SZAWG Final Report. October 5, 2006. SZAWG Members. Mandate. To provide recommendations that will correct problems contributing to inaccuracies in the settlement zone totals.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' SZAWG Final Report ' - xarles


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Szawg final report

SZAWG Final Report

October 5, 2006



Mandate
Mandate

  • To provide recommendations that will correct problems contributing to inaccuracies in the settlement zone totals.

  • To provide reasonable certainty that all existing errors in settlement zone totals have been found, so that the suspended PFAMs can be released.


Importance of System Level Metering

Since the opening of the market in 2001, the market has settled

  • 252,000 GW.h in energy. (from WSI)

  • 363 GW.h processed as PFAMs

  • error rate of approximately 0.14%

  • Using average Pool Price of $61.62 that’s $22,368,060

    (does not include all amounts re-settled in 2002 through the mandated “Final Final” settlement run)


If we do nothing
If we do nothing

  • continued large errors and adjustments to retailers

  • inaccurate zone totals leading to inaccurate load settlement (e.g. NSLS shape for zone is incorrect)

  • inaccurate zone totals leading to inaccurate transmission loss allocations

  • loss of confidence in settlement process and results

  • inefficient processes in industry

  • increased retailer risk


Definition
Definition

  • “system level” is hourly values for distribution interchange, distributed generation, and border customer consumption that are needed to describe the total hourly energy flow on the AIES at the transmission level and the inputs and outputs to each and every distribution settlement zone for each hour.


System level pfam issues
System Level PFAM issues:

  • Gathers small errors over a long period

  • Long lag time

  • No site level detail in final outcome

  • Coordination with RDS regulation is an issue

  • Impact not manageable

  • Undermines market confidence

  • Causes and consequences of these kinds of errors affect different parties

  • Was intended for occasional use only


Recommendations
Recommendations

Objectives:

  • Reduce the number of errors made in the future through improved processes, controls, and testing procedures, and

  • Identify and correct errors prior to Final Settlement.

    SZAWG did not exhaustively test or vet these across industry as a whole, and expects implementing agencies will gather broader stakeholder feedback on the Final Report.








Conclusion
Conclusion

  • These recommendations will:

    • reduce error overall,

    • catch most remaining errors prior to Final Settlement

    • reduce PFAM to occasional use – as was intended.

  • No reason, from SZAWG point of view, to continue the PFAM suspension.

    • Things will get better gradually as recommendations are implemented


Next steps
Next Steps


ad