1. A. A utility shall calculate and report in its supplemental annual performance report the following annual reliability information for its Maryland service territory:

   1. (1) All IEEE major event days;
   2. (2) Dates of all IEEE major event days; and
   3. (3) Number of customers impacted by the IEEE major event day events.

2. B. A utility shall calculate and report in its supplemental annual performance report an annual (CEMIn) for customers experiencing two or more (CEMI2), four or more (CEMI4), six or more (CEMI6), and eight or more (CEMI8) sustained interruptions unless it does not have the means to make the calculation, in which case it shall provide an explanation of the reason, and an estimate of the cost to provide the information in the future. A utility shall calculate and report:

   1. (1) CEMI2, CEMI4, CEMI6, CEMI8, excluding major outage events; and
   2. (2) CEMI2, CEMI4, CEMI6, CEMI8, including major outage events.

3. C. A utility shall calculate and report in its supplemental annual performance report an annual (MAIFIE) for its Maryland service territory unless it does not have the means to make the calculation, in which case it shall provide MAIFI and an explanation of the Utility’s limitation as well as estimated cost to furnish MAIFIE information going forward. A utility shall calculate and report:

   1. (1) MAIFIE excluding major outage events; and
   2. (2) MAIFIE including major outage events.

Authority: Public Utilities Article, §§7-213, 13-201, and 13-202, Annotated Code of Maryland

Effective date: May 28, 2012 (39:10 Md. R. 661)

Regulation .01 amended effective August 21, 2023 (50:16 Md. R. 728)

Regulation .02 amended effective August 21, 2023 (50:16 Md. R. 728)

Regulation .02C, D amended effective December 2, 2019 (46:24 Md. R. 1104)

Regulation .02D amended effective January 7, 2016 (42:26 Md. R. 1596)

Regulation .03 amended effective October 8, 2018 (45:20 Md. R. 920)

Regulation .04A, D amended effective August 21, 2023 (50:16 Md. R. 728)

Regulation .05 amended effective August 21, 2023 (50:16 Md. R. 728)

Regulation .05A amended effective December 2, 2019 (46:24 Md. R. 1104)

Regulation .07A amended effective December 2, 2019 (46:24 Md. R. 1104)

Regulation .08D amended effective August 21, 2023 (50:16 Md. R. 728)

Regulation .09 amended effective August 21, 2023 (50:16 Md. R. 728)

Regulation .10 amended effective August 21, 2023 (50:16 Md. R. 728)

Regulation .11A amended effective March 18, 2013 (40:5 Md. R. 412); December 2, 2019 (46:24 Md. R. 1104)

Regulation .11B amended effective August 21, 2023 (50:16 Md. R. 728)

Regulation .12A, B amended effective August 21, 2023 (50:16 Md. R. 728)

Regulation .12D, E adopted effective August 21, 2023 (50:16 Md. R. 728)

Regulation .13 amended effective August 21, 2023 (50:16 Md. R. 728)

Regulation .14 amended effective August 21, 2023 (50:16 Md. R. 728)

Regulation .15 adopted effective August 21, 2023 (50:16 Md. R. 728)

Regulation .16 adopted effective August 21, 2023 (50:16 Md. R. 728)

Regulation .17 adopted effective August 21, 2023 (50:16 Md. R. 728)

Regulation .18 adopted effective August 21, 2023 (50:16 Md. R. 728)