The Wind Coalition Request for Adjustment of the ETT Outages A group of owners of wind power projects behind the Panhandle GTC discussed possible changes to the ETT schedule of line outages. The group's recommendation is discussed below. The group agreed, at this time, to focus on rescheduling the outages without assuming they could be shortened. It appears that at least two of the most significant outages will occur during the windiest season in the Panhandle. Based upon the input from the group it seems prudent for The Wind Coalition to recommend changes to the current ETT outage schedule in order to optimize the Panhandle region export capability during these outages. Optimizing the outage schedule minimizes the costs of these ETT outages to ERCOT consumers. As a result of analysis of publicly available data, a more optimum schedule can be achieved if the Tesla Riley outage is moved to July, Aug, and Sept of 2018 and the Tesla Edith Clark is – – moved to Oct, Nov, and Dec of 2018. These are considered the most critical to adjust and will sequence the outages after completion of the Sharyland upgrades, which are currently under construction and expect to be completed before the Summer of 2018. The above schedule adjustment is considered the most critical/important but ideally would also like to request that, when ETT is rescheduling the other outages, the Clear Crossing Dermott – and Clear Crossing West Shackelford outages be moved to the four month period between – March and June 2018. These outages are the least impactful to the export limit and will cause the least impact to consumers during this high wind period. The changes to the ETT schedule are based upon analysis of publicly available NASA MERRA 80m median wind speed data for the region, provided below, and the ERCOT Texas Panhandle Stability Study Report for the GTC which is posted on the MIS.
The Wind Coalition Request for Adjustment of the ETT Outages A group of owners of wind power projects behind the Panhandle GTC discussed possible changes to the ETT schedule of line outages. The group's recommendation is discussed below. The group agreed, at this time, to focus on rescheduling the outages without assuming they could be shortened. It appears that at least two of the most significant outages will occur during the windiest season in the Panhandle. Based upon the input from the group it seems prudent for The Wind Coalition to recommend changes to the current ETT outage schedule in order to optimize the Panhandle region export capability during these outages. Optimizing the outage schedule minimizes the costs of these ETT outages to ERCOT consumers. As a result of analysis of publicly available data, a more optimum schedule can be achieved if the Tesla – Riley outage is moved to July, Aug, and Sept of 2018 and the Tesla – Edith Clark is moved to Oct, Nov, and Dec of 2018. These are considered the most critical to adjust and will sequence the outages after completion of the Sharyland upgrades, which are currently under construction and expect to be completed before the Summer of 2018. The above schedule adjustment is considered the most critical/important but ideally would also like to request that, when ETT is rescheduling the other outages, the Clear Crossing – Dermott and Clear Crossing – West Shackelford outages be moved to the four month period between March and June 2018. These outages are the least impactful to the export limit and will cause the least impact to consumers during this high wind period. The changes to the ETT schedule are based upon analysis of publicly available NASA MERRA 80m median wind speed data for the region, provided below, and the ERCOT Texas Panhandle Stability Study Report for the GTC which is posted on the MIS.
The_Wind_Coalition_Request_for__Adjustment_of_the_ETT_Outages.docx