(a)	SCs will submit their Preferred Day-Ahead Schedules to the ISO in accordance with the SBP;
(b)	SCs will submit, as part of their Preferred Day-Ahead Schedules, their Adjustment Bids, if any, to the ISO in accordance with the SBP;
(c)	SCs will submit their Ancillary Services bids, if any, to the ISO in accordance with the SBP and SP 9;
(d)	SCs will submit their schedules for self-provided Ancillary Services, if any, to the ISO in accordance with the SBP and SP 9;
(e)	the ISO will validate (in accordance with the SBP) all SC submitted Preferred Day-Ahead Schedules for Energy and Adjustment Bids and may assist SCs to resolve mismatches in scheduled quantities or locations for Inter-Scheduling Coordinator Energy Trades in accordance with the procedure described in SP 3.2.6.4;
(f)	the ISO will validate (in accordance with the SBP) all SC submitted schedules for self-provided Ancillary Services, Inter-Scheduling Coordinator Ancillary Service Trades, and Ancillary Services bids which were part of their Preferred Day-Ahead Schedules;
(g)	the ISO will start the first iteration of Inter-Zonal Congestion Management process as described in SP 10;
(h)	the ISO will start the Ancillary Services bid evaluation process as described in SP 9; and
(i)	the ISO will notify SCs of any Reliability Must-Run Units which have not been included in Preferred Day-Ahead Schedules but which the ISO requires to run in the Trading Day, except in those instances where a Reliability Must-Run Unit requires more than one day’s notice, in which case the ISO may notify the applicable SC more than one day in advance of the Trading Day and except for those Reliability Must-Run Units that the ISO may subsequently call upon for Ancillary Services capacity pursuant to Section 5.2 of the Tariff.
SP 3.2.6.2	Pre-validation
At 10 minutes prior to the deadline for submittal of the Preferred Day-Ahead Schedules, Adjustment Bids, schedules for self-provided Ancillary Services, Inter-Scheduling Coordinator Ancillary Service Trades, and Ancillary Services bids (the “submittal”), the
SP 3.2.10	By 1:30 pm, Day Ahead
By 1:30 pm on the day ahead of the Trading Day (for example, by 1:30 pm on Tuesday for the Wednesday Trading Day) and for each Settlement Period of the Trading Day the ISO will publish, via WEnet,an updated forecast of system Demands.
SP 3.2.11	Between 1:00 p.m. and 10:00 p.m.
If, at any time after 1:00 p.m. and before 10:00 p.m. of the day prior to the Trading Day, the ISO determines that it requires Ancillary Services in addition to those provided through the Final Day-Ahead Schedules issued under SP 3.2.9, it may procure such additional Ancillary Services by providing to SCs, via WEnet, amended schedules for Ancillary Services that had been bid in the Day-Ahead Market but were not previously selected in the Final Day-Ahead Schedules, and have not been previously withdrawn.  The ISO shall select such Ancillary Services in price merit order (and in the relevant zone if the ISO is procuring Ancillary Services on a zonal basis).  Such amended schedules shall be provided to the SCs no later than 10:00 p.m. of the day prior to the Trading Day.
SP 3.3	Hour-Ahead Market
(a)	The Hour-Ahead Market is a “deviations” market in that it represents changes from the Day-Ahead Market commitments already made for each Settlement Period in the Trading Day.  The SCs do not schedule these deviations.  Instead, these deviations are calculated by the ISO as the difference between the Final Hour-Ahead Schedules (reflecting updated forecasts of Generation, Demand, external imports/exports and Inter-Scheduling Coordinator Energy Trades) and the Final Day-Ahead Schedules.  If a SC does not submit a valid Preferred Hour-Ahead Schedule, its Final Day-Ahead Schedule will be deemed to be its Preferred Hour-Ahead Schedule.
(b)	The Hour-Ahead Markets for each Settlement Period of each Trading Day open when the Day-Ahead Market commitments are made for the same Trading Day.  Hour-Ahead Market commitments are made one hour ahead of the start of the applicable Settlement Period, at which time the ISO issues the Final Hour-Ahead Schedules.  There is an option in the bid submittal process for a SC to submit a Schedule or bid for one Settlement Period of the Trading Day or a set of Schedules and bids for all Settlement 
Periods of the Trading Day (but only between 1:00 pm and 12:00 midnight the day before).
SP 3.3.1	By Two Hours Ahead
By two hours ahead of the Settlement Period (for example, by 10:00 am for the Settlement Period starting at 12:00 noon [or hour ending 1300]) and with respect to that Settlement Period:
SP 3.3.1.1	Actions by SCs and the ISO
(a)	SCs will submit their Preferred Hour-Ahead Schedules to the ISO in accordance with the SBP;
(b)	SCs will submit, as part of their Preferred Hour-Ahead Schedules, their Adjustment Bids, if any, to the ISO in accordance with the SBP;
Units it requires to become the subject of a Reliability Must-Run Contract which had not previously been so contracted to the ISO.  None of the Generating Units owned by Local Publicly Owned Electric Utilities are planned to be designated as Reliability Must-Run Units by the ISO as of the ISO Operations Date but are expected to be operated in such a way as to maintain the safe and reliable operation of the interconnected transmission system comprising the ISO Control Area.  However, in the future, Local Publicly Owned Electric Utilities may contract with the ISO to provide Reliability Must-Run Generation.
SP 5.1.2	Annual Reliability Must-Run Forecast - Technical Studies
The ISO will perform off-line technical studies, adopt existing procedures developed by PTOs and/or develop new operating procedures to identify the Reliability Must-Run requirements for various levels of system Demand.
SP 5.2	Designation of Generating Unit as Reliability Must-Run
The ISO will have the right at any time based upon ISO Controlled Grid technical analyses and studies to designate or disqualify a Generating Unit as a Reliability Must-Run Unit.
SP 5.3	Scheduling of Reliability Must-Run Generation
The ISO will notify SCs of any Reliability Must-Run Units not included in the Preferred Day-Ahead Schedules but which the ISO requires to run at 10 am on the day ahead of the Trading Day, as described in SP 3.2.6.  The ISO will decrement SCs’ scheduled Generation to accommodate the output of these Reliability Must-Run Units as part of the real time Intra-Zonal Congestion Management process described in DP 7.4.
SP 5.4	Scheduling of Reliability Must-Run Ancillary Services
The ISO will notify SCs of any Ancillary Services it requires from Reliability Must-Run Units under their Reliability Must-Run Contracts pursuant to Section 5.2 of the Tariff as soon as practicable after the decision to call upon such units.