Dealing with Balancing Authorities that retire

[grgmiller]

Retired BAs

As the EIA-930 data about page notes,

Entities occasionally stop performing the BA role because their electric system is incorporated into another BA's system or they have made other arrangements. Five BAs retired after July 1, 2015, the first date of EIA-930 data availability:

• Gila River Power, LLC (GRMA) – retired May 3, 2018
• Ohio Valley Electric Corporation (OVEC) – retired December 1, 2018
• Utilities Commission of New Smyrna Beach (NSB) – retired January 8, 2020
• Electric Energy, Inc. (EEI) – retired February 29, 2020
• PowerSouth Energy Cooperatives (AEC) – retired September 1, 2021

We need to implement a filter to remove retired BAs from final outputs if they retired prior to the reporting year. This leads to two additional questions:

• [ ] Once a BA retires, how do we determine which new BA to assign its generation to?
• [ ] If the BA retires mid-year, how should we treat that generation? We could 1) continue to assign it to the retiring BA for the entire year, 2) switch the generation to the new BA after the retirement date, 3) Assign the generation to the new BA for the entire year.

[gailin-p]

Constellation Energy Control and Dispatch, LLC (CSTO) retired in 2015 according to https://www.ferc.gov/sites/default/files/2020-05/allowable-entries1_0.xls, but plant 55328 continues to report itself as part of CSTO in its EIA-860 form as recently as 2020.

[grgmiller]

For now, we can take the following approach:

• If a plant is assigned to a BA that retired prior to the current year, set its BA as missing so that it will be assigned a miscellaneous BA code
• If a BA retires in the middle of the current year, we will continue to assign the plant's generation to that BA through the end of the year

If data about the new BA becomes available, we can consider how we can assign the generation to the new BA after the BA retirement date.