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External Web Services Update

External Web Services Update. Nodal Advisory Task Force Presentation. July 28, 2009. EIS Market Information Services Update: Interface Review. EIS Section 4.3.16, Dynamic Ratings Status :

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External Web Services Update

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  1. External Web Services Update Nodal Advisory Task Force Presentation July 28, 2009 http://nodal.ercot.com 1

  2. EIS Market Information Services Update: Interface Review EIS Section 4.3.16, Dynamic Ratings Status: • Web Service: Real-time dynamic ratings, refreshed every 5 minutes, will be available as a web service, as well as on the MIS Secure Area in xml and csv format • EIS Section 4.3.16 will be modified to fit this report. Request will return the last good reading only due to size of the report. • Related protocol requirement- question regarding format: 6.5.7.1.7(1): ERCOT shall post summaries of dynamically adjusted Transmission Element limits on the MIS Secure Area in a form that allows Market Participants to directly upload Real-Time data into the Common Information Model (CIM) • CDR: The current MIS report posting for dynamic ratings contains hourly data for the next 7 days – available using Get Reports functionality • This data not currently being provided via ICCP - no nodal requirement

  3. EIS Market Information Services Update: Interface Review EIS Section 4.3.32, List of Zones, Hubs or Buses Status: • Current implementation is to get this via the Network Model posting on the MIS • Still evaluating a separate posting with business and technical owners • Plan for this separate posting involves it being available through Get Report functionality EIS Section 4.3.11, Market LMPs and SPPs (new to the discussion) Status: • DAM SPPs, RT LMPs and SPPs will be available as an interface • DAM LMPs: • iTest testing revealed that DAM LMPs (prices at each electrical bus x 24 hours) too large to be provided via web service (~30 MB) for nodal go-live • Available using Get Report functionality • EIS document will be updated to note that “DAM” will not be a valid market type for noun “LMP”

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