Imbalance Energy Overview Highlight Imbalance Energy
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PowerPoint PresentationImbalance Energy Overview
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
4
Imbalances (deviations) between scheduled energy and meter data.
SC’s final Energy schedule is compared against the corresponding meter data to determine if the SC:
Generated or imported more energy than its schedule Generated or imported less energy than its schedule Consumed or exported more energy than its schedule Consumed or exported less energy than its schedule
5
The ISO accounts for Imbalance Energy as follows:
For Generator: Imbalance Energy = Metered Energy – Scheduled Energy
For Load: Imbalance Energy = Scheduled Energy – Metered Energy
For System Resources: Imbalance Energy = Real-Time Flow – Scheduled Energy
6
1 100 15.833
Imbalance Energy Total = ( 15.833 MWh ) - ( 100 MW / 6 ) = -0.834
5 10 1 2
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
8
Imbalance Energy - Pricing
5-Minute Ex Post Price = The Market Clearing Price (MCP) based on the incremental cost of the system to serve the next increment of load.
Bid Ceiling $400/MWh Bid Floor $-30/MWh
9
Imbalance Energy - Pricing
5-Minute Ex Post Price = The Market Clearing Price (MCP) based on the incremental cost of the system to serve the next increment of load.
Bid Ceiling $400/MWh Bid Floor $-30/MWh
Resource-Specific Price = 10-Minute Weighted Average Price of two 5-minute ex post prices and two 5-minute instructed energy quantities for Resource.
Energy settled at Resource Specific Price: 1. Instructed Energy 2. Uninstructed Energy (Tier 1)
10
Imbalance Energy - Pricing
5-Minute Ex Post Price = The Market Clearing Price (MCP) based on the incremental cost of the system to serve the next increment of load.
Bid Ceiling $400/MWh Bid Floor $-30/MWh
Resource-Specific Price = 10-Minute Weighted Average Price of two 5-minute ex post prices and two 5-minute instructed energy quantities for Resource.
Energy settled at Resource Specific Price: 1. Instructed Energy 2. Uninstructed Energy (Tier 1)
Zonal Ex Post Price = 10-Minute Weighted Average Price of two 5-minute ex post prices and two 5 minute instructed energy quantities for ISO System.
Energy settled at Zonal Ex Post Price: 1. Uninstructed Energy (Tier 2) 2. Regulating Energy
11
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy Types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
12
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy Types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
13
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW
MW
MW
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW
MW
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW Can schedule transmission losses associated with Final HA Schedule
MW
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW Can schedule transmission losses associated with Final HA Schedule
MW Regulation energy paid as Instructed Energy (at Zonal MCP)
MW Price
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW Can schedule transmission losses associated with Final HA Schedule
MW Regulation energy paid as Instructed Energy (at Zonal MCP)
MW Minimum Load Energy as Instructed Energy Price
Price
18
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW Can schedule transmission losses associated with Final HA Schedule
MW Regulation energy paid as Instructed Energy (at Zonal MCP)
MW Minimum Load Energy as Instructed Energy Price 10-min Resource Specific Price (except regulating
energy paid at Zonal Ex Post Price) Price
19
Instructed Energy Overview:
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW Can schedule transmission losses associated with Final HA Schedule
MW Regulation energy paid as Instructed Energy (at Zonal MCP)
MW Minimum Load Energy as Instructed Energy Price 10-min Resource Specific Price (except regulating
energy paid at Zonal Ex Post Price) Price Extra Marginal Energy guaranteed Bid Cost
Recovery
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
20
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
21
Uninstructed Imbalance Energy (UIE)
Definition: Energy produced or consumed above or below schedule without any dispatch instruction from the ISO.
Charge Type 4407 MW Uninstructed Energy calculated at the resource level MW
MW
Price
MW
22
Uninstructed Imbalance Energy (UIE)
Definition: Energy produced or consumed above or below schedule without any dispatch instruction from the ISO.
Charge Type 4407 MW Uninstructed Energy calculated at the resource level MW Implementation of Uninstructed Deviation Penalty
when unit uninsructedly deviates beyond tolerance band (the greater of 3% of Pmax or 5 MW)
MW
Price
MW
23
Uninstructed Imbalance Energy (UIE)
Definition: Energy produced or consumed above or below schedule without any dispatch instruction from the ISO.
Charge Type 4407 MW Uninstructed Energy calculated at the resource level MW Implementation of Uninstructed Deviation Penalty
when unit uninsructedly deviates beyond tolerance band (the greater of 3% of Pmax or 5 MW)
MW UIE is settled in two tiers: • UIE_1 = UIE attributed to non compliance
with Dispatch Instruction • UIE_2 = Any remaining UIE
Price
MW
24
Uninstructed Imbalance Energy (UIE)
Definition: Energy produced or consumed above or below schedule without any dispatch instruction from the ISO.
Charge Type 4407 MW Uninstructed Energy calculated at the resource level MW Implementation of Uninstructed Deviation Penalty
when unit uninsructedly deviates beyond tolerance band (the greater of 3% of Pmax or 5 MW)
MW UIE is settled in two tiers: • UIE_1 = UIE attributed to non compliance
with Dispatch Instruction • UIE_2 = Any remaining UIE
Price • UIE_1 settled at resource specific price • UIE_2 settled at zonal ex post price
MW
25
Uninstructed Imbalance Energy (UIE)
Definition: Energy produced or consumed above or below schedule without any dispatch instruction from the ISO.
Charge Type 4407 MW Uninstructed Energy calculated at the resource level MW Implementation of Uninstructed Deviation Penalty
when unit uninsructedly deviates beyond tolerance band (the greater of 3% of Pmax or 5 MW)
MW UIE is settled in two tiers: • UIE_1 = UIE attributed to non compliance
with Dispatch Instruction • UIE_2 = Any remaining UIE
Price • UIE_1 settled at resource specific price • UIE_2 settled at zonal ex post price
26
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
27
Transmission Loss Obligation
Definition: Line loss that occurs when electricity is transmitted over power line. Each resource has a transmission Loss Obligation.
Charge Type 4450 MW Transmission loss obligation settled
explicitly through CT 4450 MW
Price
28
Transmission Loss Obligation
Definition: Line loss that occurs when electricity is transmitted over power line. Each resource has a transmission Loss Obligation.
Charge Type 4450 MW Transmission loss obligation settled
explicitly through CT 4450 MW Resource/Intertie can opt to self schedule
Transmission Loss obligation associated with Final HA schedule
Price
29
Transmission Loss Obligation
Definition: Line loss that occurs when electricity is transmitted over power line. Each resource has a transmission Loss Obligation.
Charge Type 4450 MW Transmission loss obligation settled
explicitly through CT 4450 MW Resource/Intertie can opt to self schedule
Transmission Loss obligation associated with Final HA schedule
Price Settled at Resource-Specific price or Average Ex Post Price.
30
Continuing Concepts Imbalance Energy (IE) Calculation For Generator: Imbalance Energy = Metered Energy – Scheduled
Energy For Load: Imbalance Energy = Scheduled Energy – Metered Energy For System Resources: Imbalance Energy = Real-Time Flow – Scheduled
Energy
Imbalance Energy Charge Types Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
28
31
Course Agenda
Course Agenda
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
4
Imbalances (deviations) between scheduled energy and meter data.
SC’s final Energy schedule is compared against the corresponding meter data to determine if the SC:
Generated or imported more energy than its schedule Generated or imported less energy than its schedule Consumed or exported more energy than its schedule Consumed or exported less energy than its schedule
5
The ISO accounts for Imbalance Energy as follows:
For Generator: Imbalance Energy = Metered Energy – Scheduled Energy
For Load: Imbalance Energy = Scheduled Energy – Metered Energy
For System Resources: Imbalance Energy = Real-Time Flow – Scheduled Energy
6
1 100 15.833
Imbalance Energy Total = ( 15.833 MWh ) - ( 100 MW / 6 ) = -0.834
5 10 1 2
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
8
Imbalance Energy - Pricing
5-Minute Ex Post Price = The Market Clearing Price (MCP) based on the incremental cost of the system to serve the next increment of load.
Bid Ceiling $400/MWh Bid Floor $-30/MWh
9
Imbalance Energy - Pricing
5-Minute Ex Post Price = The Market Clearing Price (MCP) based on the incremental cost of the system to serve the next increment of load.
Bid Ceiling $400/MWh Bid Floor $-30/MWh
Resource-Specific Price = 10-Minute Weighted Average Price of two 5-minute ex post prices and two 5-minute instructed energy quantities for Resource.
Energy settled at Resource Specific Price: 1. Instructed Energy 2. Uninstructed Energy (Tier 1)
10
Imbalance Energy - Pricing
5-Minute Ex Post Price = The Market Clearing Price (MCP) based on the incremental cost of the system to serve the next increment of load.
Bid Ceiling $400/MWh Bid Floor $-30/MWh
Resource-Specific Price = 10-Minute Weighted Average Price of two 5-minute ex post prices and two 5-minute instructed energy quantities for Resource.
Energy settled at Resource Specific Price: 1. Instructed Energy 2. Uninstructed Energy (Tier 1)
Zonal Ex Post Price = 10-Minute Weighted Average Price of two 5-minute ex post prices and two 5 minute instructed energy quantities for ISO System.
Energy settled at Zonal Ex Post Price: 1. Uninstructed Energy (Tier 2) 2. Regulating Energy
11
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy Types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
12
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy Types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
13
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW
MW
MW
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW
MW
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW Can schedule transmission losses associated with Final HA Schedule
MW
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW Can schedule transmission losses associated with Final HA Schedule
MW Regulation energy paid as Instructed Energy (at Zonal MCP)
MW Price
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW Can schedule transmission losses associated with Final HA Schedule
MW Regulation energy paid as Instructed Energy (at Zonal MCP)
MW Minimum Load Energy as Instructed Energy Price
Price
18
Instructed Energy Overview:
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW Can schedule transmission losses associated with Final HA Schedule
MW Regulation energy paid as Instructed Energy (at Zonal MCP)
MW Minimum Load Energy as Instructed Energy Price 10-min Resource Specific Price (except regulating
energy paid at Zonal Ex Post Price) Price
19
Instructed Energy Overview:
Charge Type 4401 MW All dispatch instructions are deemed delivered MW Instructed Energy calculated based on 5-minute
dispatch interval. Settled at 10-minute Settlement Interval.
MW Can schedule transmission losses associated with Final HA Schedule
MW Regulation energy paid as Instructed Energy (at Zonal MCP)
MW Minimum Load Energy as Instructed Energy Price 10-min Resource Specific Price (except regulating
energy paid at Zonal Ex Post Price) Price Extra Marginal Energy guaranteed Bid Cost
Recovery
Definition: Energy produced or consumed as the result of responding to Dispatch Instructions.
20
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
21
Uninstructed Imbalance Energy (UIE)
Definition: Energy produced or consumed above or below schedule without any dispatch instruction from the ISO.
Charge Type 4407 MW Uninstructed Energy calculated at the resource level MW
MW
Price
MW
22
Uninstructed Imbalance Energy (UIE)
Definition: Energy produced or consumed above or below schedule without any dispatch instruction from the ISO.
Charge Type 4407 MW Uninstructed Energy calculated at the resource level MW Implementation of Uninstructed Deviation Penalty
when unit uninsructedly deviates beyond tolerance band (the greater of 3% of Pmax or 5 MW)
MW
Price
MW
23
Uninstructed Imbalance Energy (UIE)
Definition: Energy produced or consumed above or below schedule without any dispatch instruction from the ISO.
Charge Type 4407 MW Uninstructed Energy calculated at the resource level MW Implementation of Uninstructed Deviation Penalty
when unit uninsructedly deviates beyond tolerance band (the greater of 3% of Pmax or 5 MW)
MW UIE is settled in two tiers: • UIE_1 = UIE attributed to non compliance
with Dispatch Instruction • UIE_2 = Any remaining UIE
Price
MW
24
Uninstructed Imbalance Energy (UIE)
Definition: Energy produced or consumed above or below schedule without any dispatch instruction from the ISO.
Charge Type 4407 MW Uninstructed Energy calculated at the resource level MW Implementation of Uninstructed Deviation Penalty
when unit uninsructedly deviates beyond tolerance band (the greater of 3% of Pmax or 5 MW)
MW UIE is settled in two tiers: • UIE_1 = UIE attributed to non compliance
with Dispatch Instruction • UIE_2 = Any remaining UIE
Price • UIE_1 settled at resource specific price • UIE_2 settled at zonal ex post price
MW
25
Uninstructed Imbalance Energy (UIE)
Definition: Energy produced or consumed above or below schedule without any dispatch instruction from the ISO.
Charge Type 4407 MW Uninstructed Energy calculated at the resource level MW Implementation of Uninstructed Deviation Penalty
when unit uninsructedly deviates beyond tolerance band (the greater of 3% of Pmax or 5 MW)
MW UIE is settled in two tiers: • UIE_1 = UIE attributed to non compliance
with Dispatch Instruction • UIE_2 = Any remaining UIE
Price • UIE_1 settled at resource specific price • UIE_2 settled at zonal ex post price
26
Imbalance Energy Overview Pricing of Imbalance Energy Imbalance Energy types
Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
27
Transmission Loss Obligation
Definition: Line loss that occurs when electricity is transmitted over power line. Each resource has a transmission Loss Obligation.
Charge Type 4450 MW Transmission loss obligation settled
explicitly through CT 4450 MW
Price
28
Transmission Loss Obligation
Definition: Line loss that occurs when electricity is transmitted over power line. Each resource has a transmission Loss Obligation.
Charge Type 4450 MW Transmission loss obligation settled
explicitly through CT 4450 MW Resource/Intertie can opt to self schedule
Transmission Loss obligation associated with Final HA schedule
Price
29
Transmission Loss Obligation
Definition: Line loss that occurs when electricity is transmitted over power line. Each resource has a transmission Loss Obligation.
Charge Type 4450 MW Transmission loss obligation settled
explicitly through CT 4450 MW Resource/Intertie can opt to self schedule
Transmission Loss obligation associated with Final HA schedule
Price Settled at Resource-Specific price or Average Ex Post Price.
30
Continuing Concepts Imbalance Energy (IE) Calculation For Generator: Imbalance Energy = Metered Energy – Scheduled
Energy For Load: Imbalance Energy = Scheduled Energy – Metered Energy For System Resources: Imbalance Energy = Real-Time Flow – Scheduled
Energy
Imbalance Energy Charge Types Instructed Imbalance Energy - CT 4401 Uninstructed Imbalance Energy - CT 4407 Transmission Loss Obligation – CT 4450
28
31
Course Agenda
Course Agenda
