NOTICE DATE:  April 20, 2017

NOTICE TYPE:  M-B042017-01 Outage – Retail/Wholesale

SHORT DESCRIPTION:  Planned system maintenance with impacted services

INTENDED AUDIENCE:  ERCOT Market Participants

DAY(S) AFFECTED:  April 25, 2017 16:30 – 20:30, April 27, 2017 9:30 – 14:00, and April 27, 2017 16:00 – 18:00

LONG DESCRIPTION:  ERCOT will be performing planned system maintenance of several databases and applications on April 25 and April 27, 2017.

During the April 25, 2017 16:30 – 20:30 outage window, Market Participants may experience intermittent issues with the following services:

·         MPIM

·         The following ERCOT internet services:

o   Texas Renewables – www.texasrenewables.com

o   Retail Testing Website - etod.ercot.com

·         Market Data Transparency (MDT) Web Services

·         Extract Subscriber

·         Net Dependable Capability and Reactive Capability (NDCRC)

During the April 27, 2017 9:30 – 14:00 outage window, Market Participants may experience intermittent issues with the following services:

·         Report publishing to the ERCOT Market Information System (MIS)

·         Find ESIID

During the April 27, 2017 16:00 – 18:00 outage window, Market Participants may experience intermittent issues with the following services:

·         Market submissions and requests via WebServices, Market Manager and Outage Scheduler

·         Report publishing to the ERCOT MIS

·         Downloading of extracts and reports from the MIS and WebServices

·         Net Dependable Capability and Reactive Capability (NDCRC)

·         Congestion Revenue Right (CRR) Market User Interface

During this outage window, please use the following URLs to directly access the Market Manager and Outage Scheduler: 

• https://mis.ercot.com/mmsui/mmsui/displayTradesLanding.action
• https://mis.ercot.com/osrui/osrui/Summary.action

Note that the outage start times may be delayed depending on the current system conditions.

ADDITIONAL INFORMATION:  Reports will be rerun and reposted as applicable. The MIS Dashboards and ERCOT.com price displays will not be populated with data during the April 27, 2017 16:00 – 18:00 timeframe.

CONTACT:  If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask].

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