This excerpt taken from the PCG 10-K filed Feb 18, 2005.
14.3. Availability Formula.
14.3.1 Availability Measure. The ISO performance-based standards shall be based on the availability measures described in Section 4 of Appendix C of this Agreement.
14.3.2 Excluded Events. Scheduled Approved Maintenance Outages and certain Forced Outages will be excluded pursuant to Section 4.2.3 of Appendix C of this Agreement from the calculation of the availability measure.
14.3.3 Availability Measure Target. The Maintenance Coordination Committee and each Participating TO shall jointly develop for the Participating TO an availability measure target, which may be defined by a range. The target will be based on prior Participating TO performance developed in accordance with Section 4 of Appendix C of this Agreement and national benchmarks.
14.3.4 Calculation of Availability Measure. The availability measure shall be calculated annually by the Participating TO and reported to the ISO for evaluation of the Participating TO's compliance with the availability measure target. This calculation will determine the availability measure in accordance with Section 4 of Appendix C of this Agreement.
14.3.5 Compliance with Availability Measure Target. The ISO and the Participating TO may track the availability measure on a more frequent basis (e.g., quarterly, monthly), but the annual calculation shall be the sole basis for determining the Participating TO's compliance with its availability measure target.
14.3.6 Public Record. The Participating TO's annual availability measure calculation and the associated availability measure data shall be made available to the public.