20.50.12.03

.03 Poorest Performing Feeder Standard.

A. Poorest Performing Feeder Standard for Feeders Assigned to Maryland.

(1) A utility shall report in its annual performance report CAIDI, SAIDI, and SAIFI indices for 3 percent of feeders assigned to Maryland that are identified by the utility as having the poorest feeder reliability.

(2) For an investor-owned utility, each index shall be calculated and reported in the annual performance report using the following sets of input data:

(a) All interruption data; and

(b) All interruption data minus major outage event interruption data.

(3) For cooperatively owned utilities, each index shall be calculated and reported in the annual performance report using the following sets of input data:

(a) All interruption data;

(b) All interruption data minus major outage event interruption data; and

(c) All interruption data minus major outage event interruption data and minus outage data resulting from an outage event occurring on another utility's electric system.

(4) The method used by a utility to identify the feeders with poorest reliability and the quantitative results derived from the method shall be stated in the annual performance report and the method may not be subsequently changed by the utility without Commission approval.

(5) No feeder ranked in the poorest performing 3 percent of feeders shall perform in the poorest performing 3 percent of feeders during either of the two subsequent 12-month reporting periods, after allowing one 12-month reporting period for the utility to implement remediation measures, unless the utility has undertaken reasonable remediation measures to improve the performance of the feeder.

(6) A utility shall not consider the poorest performing feeders from the immediately preceding reporting period when determining the poorest performing feeders for the current reporting period.

B. Poorest Performing Feeder Standard for Feeders Not Assigned to Maryland.

(1) For each feeder not assigned to Maryland that serves more than ten Maryland customers, the utility shall report the feeder in its annual performance report and the feeder’s CAIDI, SAIDI, and SAIFI indices, if the feeder would have been included on the poorest performing feeder list but for the fact that the feeder is not assigned to Maryland.

(2) For each feeder included in §B(1) of this regulation, the utility shall report the number of customers located in Maryland and the number of customers located in a bordering jurisdiction.

(3) For each feeder reported in §B(1) of this regulation, the utility shall implement reasonable remediation measures to improve the performance of the feeder portion serving Maryland customers, which measures shall be described by the utility in its annual performance report. If implementing a remediation plan is not reasonable, the utility shall provide an explanation of its decision in its annual performance plan.

(4) The reliability indices and method for identifying the performance of feeders under this provision shall be consistent with §A(2), (4), and (6) of this regulation.

C. Evaluation of Remedial Actions. For the feeders that are identified as having the poorest performance, the utility shall provide the following information:

(1) In the annual performance report in which the feeders are identified as requiring reasonable remediation measures, a brief description of the actions taken or proposed, if any, to improve reliability and the actual or expected completion date of the action; and

(2) In the five subsequent annual performance reports, the performance of the feeder shall be reported with its performance ranking. This reporting requirement does not alter §A(6) of this regulation.

D. Feeders Assigned to Maryland.

(1) All feeders of a utility that serve only Maryland customers are assigned to Maryland.

(2) For a utility that has one or more feeders that serve a Maryland customer and at least one customer in a bordering jurisdiction:

(a) The feeders used in determining the utility’s system-wide SAIDI and SAIFI performance results as reported to the Commission by the utility’s 2010 annual reliability report shall be assigned to Maryland unless otherwise directed by the Commission;

(b) The utility may not change the assignment list without Commission approval; and

(c) For a new feeder added to the utility's system, or an existing feeder that is modified, that serves more than ten Maryland customers and at least one customer in a bordering jurisdiction, the utility shall file notice with the Commission advising of the feeder's assignment.

E. If a utility fails to satisfy the standard in §A(5) of this regulation with respect to a feeder assigned to Maryland, it shall provide a corrective action plan, preferably in its annual performance report but by no later than April 1.