Coordinators.  The ISO will calculate the user rate for Non-Spinning Reserve in each Zone for each Settlement Period as:

where:
NonSpinPayDA = Total Non-Spinning Reserve payments for the Settlement Period in the Day-Ahead Market for the Zone. 
NonSpinPurchDA = the total ISO Non-Spinning Reserve MW purchases for the Settlement Period for the Zone, excluding that which has been self-provided by Scheduling Coordinators.
For each Settlement Period, each Scheduling Coordinator shall pay to the ISO a sum calculated as follows for each Zone:
NonSpRateDA * NonSpinOblig
where NonSpinOblig is the Scheduling Coordinator’s obligation for Non-Spinning Reserve in the Zone in the Settlement Period for which it has not self provided.

2.5.28.4	Replacement Reserve.  The user rate per unit of Replacement Reserve obligation for each Settlement Period t for each Zone x shall be as follows:

where

OrigReplReqDAxt = Replacement Reserve requirement net of self-provision in the Day-Ahead Market before consideration of any substitutions pursuant to Section 2.5.3.6.

OrigReplReqHAxt = Incremental change in the Replacement Reserve requirement net of self-provision between the Day-Ahead Market and the Hour-Ahead Market before consideration of any substitutions pursuant to Section 2.5.3.6.
PRepResDAxt is the Market Clearing Price for Replacement Reserve in the Day-Ahead Market for Zone x in Settlement Period t.  
PRepResHAxt is the Market Clearing Price for Replacement Reserve in the Hour-Ahead Market for Zone x in Settlement Period t.
	For each Settlement Period t, each Scheduling Coordinator shall pay to the ISO a sum calculated as follows for each Zone x:
ReplRatext*ReplObligjxt 
where 
ReplObligjxt = DevReplObligjxt + RemRepljxt – SelfProvjxt  + NetInterSCTradesjxt
DevReplOblig jxt is the Scheduling Coordinator’s obligation for deviation Replacement Reserve in Zone x in the Settlement Period t and RemRepljxt is the Scheduling Coordinator’s obligation for remaining Replacement Reserve in Zone x for Settlement Period t.
SelfProvjxt is Scheduling Coordinator's Replacement Reserve self provision in Zone x for Settlement Period t.
NetInterSCTradesjxt  is the sale of Replacement Reserve less the purchase of Replacement Reserve through Inter-Scheduling Coordinator Trades by Scheduling Coordinator j in Zone x for Settlement Period t.

Deviation Replacement Reserve for Scheduling Coordinator j in Zone x for Settlement Period t is calculated as follows:
If ReplObligTotalxt > TotalDeviationsxt  then:

If ReplObligTotalxt <  TotalDeviationsxt  then:

where

GenDevijxt = The deviation between scheduled and actual Energy Generation for Generator i represented by Scheduling Coordinator j in Zone x during Settlement Period t as referenced in Section 11.2.4.1.
LoadDevijxt = The deviation between scheduled and actual Load consumption for resource i represented by Scheduling Coordinator j in Zone x during Settlement Period t as referenced in Section 11.2.4.1.
DevReplObligxt is total deviation Replacement Reserve in Zone x for Settlement Period t.

ReplObligTotalxt is total Replacement Reserve Obligation (including self-provision) in Zone x for Settlement Period t.
Remaining Replacement Reserve for Scheduling Coordinator j in Zone x for Settlement Period t is calculated as follows:

where:
MeteredDemandjxt is the Scheduling Coordinator’s total metered Demand excluding exports in Zone x for Settlement Period t.
TotalMeteredDemandxt is total metered Demand excluding exports in Zone x for Settlement Period t.
TotalRemReplxt = Max[0,ReplObligTotalxt + DevReplObligxt]