Intertie scheduling total amount of energy and ancillary service capacity that can be scheduled at each scheduling point. Reliability Must-Run (RMR) pre-dispatch curtailment (supply) -6000 -150 The ISO considers transmission constraints when determining RMR scheduling requirements. After the ISO has determined the RMR scheduling requirements, the market optimization ensures that the designated capacity is scheduled in the market. Pseudo-tie layoff energy -6000 -150 Pseudo-tie layoff energy is scheduled under contractual arrangements with the Balancing Authority in whose area a pseudo-tie generator is located. Transmission constraints: branch, corridor, nomogram (base case and contingency analysis) 5000 1000 In the scheduling run, the market optimization enforces transmission constraints up to a point where the cost of enforcement (the “shadow price” of the constraint) reaches the parameter value, at which point the constraint is relaxed. Transmission Ownership Right (TOR) self schedule 5900, 5900 1000, -150 A TOR Self-Schedule will be honored in the market scheduling in preference to enforcing transmission constraints. Existing Transmission Contract (ETC) self schedule 5100 to 5900, 5100 to 5900 1000, -150 An ETC Self-Schedule will be honored in the market scheduling in preference to enforcing transmission constraints. The typical value is set at $5500, but different values from $5100 to $5900 are possible if the instructions to the ISO establish differential priorities among ETC rights. For some ETC rights the ISO may use values below the stated scheduling run range if that is required for consistency with the instructions provided to the ISO by the PTO. Converted Right (CVR) self schedule 5500, 5500 1000, -150 A CVR Self-Schedule is assigned the same priority as the typical value for ETC Self-Schedules. Ancillary Service Region Regulation-up and Regulation-down Minimum Requirements 2500 250 In the event of bid insufficiency, AS minimum requirements will be met in preference to serving generic demand, but not at the cost of overloading transmission into AS regions. Ancillary Service Region Spin Minimum Requirements 2250 250 Spinning reserve minimum requirement is enforced with priority lower than regulation up minimum requirement in scheduling run. Ancillary Service Region 2000 250 Non-spin reserve minimum requirement is
Conditionally unqualified Reg Up or Down self-provision -195 NA In instances where AS self-provision is not qualified pursuant to the MRTU tariff, the capacity can still be considered as an AS bid, along with regular AS bids. The price used for considering unqualified AS is lower than the AS bid cap, to allow it to be considered as an Economic Bid. Conditionally unqualified Spin self-provision -170 NA Same as above. Conditionally unqualified Non-Spin self-provision -155 NA Same as above. Residual Unit Commitment (RUC) Parameter Values Penalty Price Description Scheduling Run Value Pricing Run Value Comment Transmission constraints: Intertie scheduling 2000 250 The Intertie scheduling constraint retains higher relative priority than other RUC constraints. Market energy balance procurement 1600 0 The RUC procurement may be less than the Demand forecast if the CAISO has committed all available generation and accepted intertie bids up to the intertie capacity. Transmission constraints: branch, corridor, nomogram (base case and contingency analysis) 1250 250 These constraints affect the final dispatch in the Real-Time Market, when conditions may differ from Day-Ahead. Maximum energy limit in RUC schedule 1500 250 Limits the extent to which RUC can procure energy rather than unloaded capacity to meet the RUC target. For MRTU launch the limit will be set so that the total energy scheduled in the IFM and RUC will be no greater than 99% of the RUC target unless this limit is relaxed in the RUC scheduling run. Limit on quick-start capacity in RUC 250 0 Limits the amount of quick-start capacity (resources that can be started up and on-line within 5 hours) that can be scheduled in RUC. For MRTU launch the limit will be set to 75%. Day-Ahead energy schedules resulting from the IFM run 250 0 These values preserve established in IFM in both the RUC scheduling run and pricing run.
Market energy balance -over procurement 200 0 Market energy balance when the RUC procurement may be more than the Demand forecast. Real Time Market Parameters Penalty Price Description Scheduling Run Value Pricing Run Value Comment Energy balance/Load curtailment and exports utilizing non-RA capacity 6500 1000 Scheduling run penalty price is set high to achieve high priority in serving forecast load and exports that utilize non-RA capacity. Energy bid cap as pricing run parameter reflects energy supply shortage. Transmission constraints: Intertie scheduling 7000 1000 The highest among all constraints in scheduling run, penalty price reflects its priority over load serving. Energy bid cap as pricing run parameter reflects energy supply shortage. Reliability Must-Run (RMR) pre-dispatch curtailment (supply), and Exceptional Dispatch Supply -6000 -150 RMR scheduling requirement is protected with higher priority over enforcement of internal transmission constraint in scheduling run. Energy bid floor is used as the pricing run parameter for any type of energy self-schedule. Pseudo-tie layoff energy -6000 -150 Same priority of protection as RMR schedule in scheduling run. Energy bid floor is used as the pricing run parameter for any type of energy self-schedule. Transmission constraints: branch, corridor, nomogram (base case and contingency analysis) 1500 1000 Scheduling run penalty price will enforce internal transmission constraints up to a re-dispatch cost of $ of congestion relief in $1500 per MWh. Energy bid cap as pricing run parameter consistent with the value for energy balance relaxation under a global energy supply shortage. Real Time TOR Supply Self Schedule -5900 -150 In RTM, TOR self-schedule scheduling run penalty price is much higher in magnitude than generic self-schedule but lower than transmission constraint. Energy bid floor is used as the pricing run parameter as any type of energy
Real Time ETC Supply Self Schedule -5100 to -5900 -150 In RTM the range of penalty prices for different ETCs supply self-schedules are much higher in magnitude than generic supply self-schedules but lower than TOR. Energy bid floor is the pricing parameter for all energy supply self-schedules. Ancillary Service Region Reg-Up and Reg-Down Minimum Requirements 2500 250 Scheduling run penalty price is below the one for transmission constraint. Pricing run parameter is set to the AS market bid cap to reflect AS supply shortage. Ancillary Service Region Spin Minimum Requirements 2250 250 Scheduling run penalty price is lower than the one for regulation-up minimum requirement. Pricing run parameter is set to the AS market bid cap to reflect AS supply shortage. Ancillary Service Region Non-Spin Minimum Requirements 2000 250 Scheduling run penalty price is lower than the one for spin minimum requirement. Pricing parameter is set to the AS market bid cap to reflect AS supply shortage. Ancillary Service Region Maximum Limit on Upward Services 1500 250 Scheduling run penalty price is lower than those for minimum requirements to avoid otherwise system-wide shortage by allowing sub-regional relaxation of the maximum requirement. AS market bid cap as pricing run to reflect the otherwise system-wide shortage. Self-scheduled exports not using identified non-RA supply resource 1100 1000 Scheduling run penalty price reflects relatively low priority in protection as compared to other demand categories. Energy bid cap as pricing run parameter to reflect energy supply shortage. Final IFM Supply Schedule -1000 -150 Scheduling run penalty price is much higher in magnitude than supply generic self-schedule but lower than ETCs. Energy bid floor is the pricing parameter for all energy supply self-schedules. Regulatory Must-Run and Must Take supply curtailment -1250 -150 Scheduling run penalty price reflects the higher priority of regulatory must-run and must-take supply received over generic self-schedules for supply resources. Energy bid floor is the pricing parameter for all energy supply self-schedules. Price-taker supply bids -400 -150 Energy bid floor is the pricing parameter for all energy supply self-schedules. Qualified Load Following self-provision Up or Down -8500 0 Scheduling run penalty price reflects the highest priority among all categories of AS self-provision. AS bid floor is used as the pricing parameter for any type of AS