1. Integrated Marketplace MUI Technical Specifications February 17, 2012

2. Outline 2 Marketplace MUI vs. EIS MUI Participant Submissions Market Notifications Market Data Available to Query Related Documents

3. MARKETPLACE MUI VS. EIS MUI 3

4. Similarities XML-based interface –Programmatic API –Browser based User Interface (UI) Available via SPPNet and Internet Certificates used for authentication and authorization –LSA assigns roles for each user Users may query for the following types Market data –Private data (e.g. data previously submitted or asset owner specific market results) –Notification data (i.e., data issued as notifications to all participants) –Public data (e.g. market clearing prices). Notification Push Process –1 Primary and up to 9 additional Participant listeners can be registered per notify service for each Asset Owner –Retry attempts for failed notifications to the Primary listener 4

5. Differences Services partitioned into logical subsets –Energy, Virtual, Reserve, etc. Low level operations for Resource Offers –Allows user to update individual parameters without resubmitting the whole resource offer –Composite operation is also available to submit the complete resource offer Authorized users can programmatically manage Notification listeners per notify service for each Asset Owner –Add, remove and query listeners –Set priority for each listener (primary, secondary, additional) Note: The same listener URL can be assigned to multiple notify services Delete operations available for Demand Bids, Virtual Bids/Offers and Notification Listeners Asynchronous credit approval response from MUI for Virtual Bid/Offer submissions 5

6. PARTICIPANT SUBMISSIONS 6

7. Participant Market Submissions 7 Participant Data SubmissionMUI WSDL Demand BidsDemand Energy Resource OffersEnergy DRR Load ForecastEnergy Non-Conforming Load ForecastLoad Forecast Asset Owner Notification ListenersNotify Reserve OffersReserve Virtual Bids / OffersVirtual

8. MARKET NOTIFICATIONS 8

9. Market Notifications 9 MUI WSDL Energy Commitment SchedulesEnergy Notify Energy DispatchEnergy Notify Energy Emergency Limit Enabled / DisabledEnergy Notify Energy Offer Cap Enabled / DisabledEnergy Notify Next Day Energy Offer CapsEnergy Notify Market Message (used to notify AOs of significant, usually planned, market events) Market Notify Operator Override Market Notify Market TimelineMarket Notify Violation Relaxation LimitsMarket Notify

10. Market Notifications 10 Market NotificationsMUI WSDL Contingency Reserve DeploymentReserve Notify Operating Reserve DispatchReserve Notify Operating Reserve ObligationReserve Notify Operating Reserve Regulation StatusReserve Notify Operating Reserve RequirementReserve Notify Transaction State (notifies Asset Owner of a change to the state of a pending transaction such as Virtual Bid / Offer) Transaction Notify

11. MARKET DATA AVAILABLE TO QUERY 11

12. Market Data Available to Query 12 Market DataMUI WSDL Cleared Fixed and Price Sensitive Demand BidsDemand Cleared Energy OffersEnergy Energy Combined Cycle StatusEnergy Submitted Resource OffersEnergy Energy DispatchEnergy Submitted DRR Load ForecastEnergy Submitted Non-Conforming Load ForecastLoad Forecast Binding LimitsMarket Market Demand CurveMarket Distribution FactorsMarket Market MessageMarket Market MW Summary (public data) Market

13. Market Data Available to Query 13 Market DataMUI WSDL Market NodesMarket Market OverrideMarket Market Prices (public data) Market Market TimelineMarket Violation Relaxation LimitsMarket Participant URLs registered in the MUINotify Cleared Reserve OffersReserve Contingency Reserve DeploymentsReserve Reserve Demand CurvesReserve Reserve DispatchReserve Reserve ObligationsReserve Reserve RequirementsReserve

14. Market Data Available to Query 14 Market DataMUI WSDL Submitted Operating Reserve OffersReserve Reserve PricesReserve Status of submitted transactionTransaction Submitted Virtual Bids / OffersVirtual Cleared Virtual Bids / OffersVirtual

15. RELATED DOCUMENTS 15

16. Related Documents 16 The following documents are available in the Markets project folder on SPP.org. project folder Member Impacting Project Overview Marketplace MUI Web Services Data Exchange Guide, WSDLs and XSDs