Oklahoma Administrative Code › Title 165 - Corporation Commission › Chapter 35 - Electric Utility Rules › Subchapter 25 - Operations Requirements for Utilities › Part 3 - RELIABILITY OF SERVICE AND RELIABILITY PROGRAM › Section 165:35-25-18 - Performance levels

Current through Vol. 41, No. 20, July 1, 2024
(a)
Utility's responsibility and indices used.
It shall be the
				  utility's responsibility to maintain and compile the data necessary to compute
				  System Average Interruption Duration Index (SAIDI) and System Average
				  Interruption Frequency Index (SAIFI) (and to the maximum extent practicable,
				  Momentary Average Interruption Frequency Index (MAIFI)). These indices shall be
				  computed by the utility for each reporting year, or any sub-period thereof, as
				  requested by PUD. The data maintained and compiled for the computation of the
				  indices shall conform strictly to their respective definitions as set forth in
				  this Part. The indices shall be computed for the utility's entire service
				  territory, for each region, and for each distribution circuit. Computation of
				  the indices shall not include interruptions that have resulted from operating
				  conditions that are beyond the utility's control (such as a major event, as
				  that term is defined and used under this subchapter). Each utility shall
				  maintain the raw interruption and duration date as well as the computation of
				  the indices for each reporting year, for a period of not less than three years
				  after the annual report filing deadline. The utility shall maintain all data
				  necessary to compute SAIDI and SAIFI (and to the maximum extent practicable,
				  MAIFI), for all major events but is not required to make such computations
				  except as requested by PUD.
(b)
Minimum performance level.
Upon receipt of the utility's annual
				  report, PUD will compare the indices computed for the utility's service
				  territory to the minimum performance level. The minimum performance level shall
				  represent the lower threshold of adequate service below which further review,
				  analysis, and corrective action may be required. The minimum performance levels
				  shall be reached when the SAIDI and SAIFI values of each utility's service are
				  equal to or better than the minimum performance levels for these indices. The
				  base performance level for SAIDI and SAIFI for the period January 2005 through
				  December 2009 shall be established through engineering and economic studies of
				  historical performance and system operations prepared by each utility, in
				  consultation with PUD Staff, and submitted as part of each utility's
				  reliability report submitted March 1, 2005. This base performance level shall
				  be recomputed by each utility every fifth (5 th)
				  year and submitted to PUD in the next year's reliability report. After notice
				  and hearing, the Commission may modify the minimum performance level of any
				  utility. The minimum performance level for a utility with less than 100,000
				  customers shall be adjusted to account for variances in the rural nature or
				  other special characteristics of their distribution system. The adjusted
				  minimum performance level for a utility with less than 100,000 customers shall
				  be determined by multiplying the annual minimum performance level by the ratio
				  of miles of line per customer plus 1 for the reporting year. It will be the
				  responsibility of the utility to determine the adjusted minimum performance
				  level using this formula for each reporting year. The utility's average number
				  of customers for the prior reporting year shall determine the standards to be
				  applied to the current reporting year.
(c)
Objective performance level.
The objective performance level shall represent a fully adequate level of
				  service that each utility should strive to achieve and maintain. It shall be
				  reached when the SAIDI and SAIFI values of each utility's service territory are
				  for the year is within the bandwidth established based on the data gathered
				  pursuant to the process described in OAC 165:35-25-18(b).
(d)
Commission Review.
In its
				  review of a utility's cost of service and rate of return, the Commission may
				  consider, in general rates cases, the utility's reliability reporting and
				  levels for SAIDI, SAIFI, Customer Average Interruption Duration Index (CAIDI),
				  and MAIFI.
(e)
Limitations to
				  technology.
Utilities that do not have the technological capability to
				  maintain and compile all such data, shall maintain and compile such data that
				  it has available and utilizes to define and identify system reliability levels
				  as well as outline progress towards attainment of additional
				  technologies.
Added at 21 Ok Reg
					 2091, eff 7-1-04