Storage Index

Storage Attributes

Name	Units	Default Value	Validation Rule	Description
Latitude	°	0		Latitude
Longitude	°	0		Longitude

Storage Input Properties

Name	Units	Multi-band	Default Value	Validation Rule	Key Property	Description
Balance Period	-	False	0	In (0,1,2,3,4,5,6)	False	Frequency of storage balance
Decomposition Bound Penalty	$/GWh	False	1000000	≥0	False	Penalty applied to violation of storage bounds when the decomposition implies possible violations.
Decomposition Method	-	False	1	In (0,1,2)	False	Method used to pass the optimal storage trajectory from one simulation phase to the next.
Decomposition Penalty a	-	False	0.0489		False	Decomposition storage target penalty function 'a' term.
Decomposition Penalty b	-	False	0.6931		False	Decomposition storage target penalty function 'b' term.
Decomposition Penalty c	-	False	0		False	Decomposition storage target penalty function 'c' term.
Decomposition Penalty x	-	False	1.1		False	Decomposition storage target penalty function 'x' term.
Downstream Efficiency	MW/MW	False	1	≥0	False	Aggregate efficiency of generation down the river chain
End Effects Method	-	False	0	In (0,1,2)	False	Method used to handle end-of-period storage.
Energy Value	$/MWh	True	10000		False	Incremental price of energy generated from storage
Energy Value Point	GWh	True	1E+30	≥0	False	Energy associated with [Energy Value] in multiple bands
Enforce Bounds	Yes/No	False	-1	In (0,-1)	False	If the storage bounds are enforced.
High Ref Area	m² (Metric), ft² (U.S. Imperial)	False	0	≥0	False	Area of surface at high reference level
High Ref Level	m (Metric), ft (U.S. Imperial)	False	0	≥0	False	High reference level for volume calculation
Initial Level	m (Metric), ft (U.S. Imperial)	False	0	≥0	False	Initial level
Initial Volume	GWh	False	0	≥0	False	Storage volume at the start of the period
Internal Volume Scalar	-	False	1000	>0	False	Storage volume scaling factor used internal to the mathematical program.
Loss Rate	%	False	0		False	Rate of loss due to evaporation, leakage, etc
Low Ref Area	m² (Metric), ft² (U.S. Imperial)	False	0	≥0	False	Area of surface at low reference level
Low Ref Level	m (Metric), ft (U.S. Imperial)	False	0	≥0	False	Low reference level for volume calculation
Max Generator Release	MW	False	1E+30	≥0	False	Maximum rate of release for generation from the storage
Max Level	m (Metric), ft (U.S. Imperial)	False	1E+30	≥0	False	Maximum level
Max Ramp	GWh	False	1E+30	≥0	False	Maximum rate of change in storage
Max Ramp Day	GWh	False	1E+30	≥0	False	Maximum of change in storage across each day.
Max Ramp Hour	MW	False	1E+30	≥0	False	Maximum change in storage across each hour.
Max Ramp Month	GWh	False	1E+30	≥0	False	Maximum of change in storage across each month.
Max Ramp Penalty	$/MW	False	-1		False	Penalty for violating the [Max Ramp Day/Week/Month/Year] constraint.
Max Ramp Week	GWh	False	1E+30	≥0	False	Maximum of change in storage across each week.
Max Ramp Year	GWh	False	1E+30	≥0	False	Maximum of change in storage across each year.
Max Release	MW	False	1E+30	≥0	False	Maximum rate of release from the storage
Max Release Penalty	$/MW	False	-1		False	Penalty for violation of maximum rate of release constraints
Max Spill	MW	False	1E+30	≥0	False	Maximum allowable spill from the storage to "the sea"
Max Volume	GWh	False	1E+30	≥0	False	Maximum volume
Min Level	m (Metric), ft (U.S. Imperial)	False	0	≥0	False	Minimum level
Min Release	MW	False	0		False	Minimum rate of release from the storage
Min Release Penalty	$/MW	False	-1		False	Penalty for violation of minimum rate of release constraints
Min Volume	GWh	False	0	≥0	False	Minimum volume
Model	-	False	0	In (0,1,2,3)	False	Model used to define and model storage volumes (used to override the file-level Hydro Model setting).
Natural Inflow	MW	False	0		False	Rate of natural inflow
Natural Inflow Incr	MW	False	0		False	Increment to [Natural Inflow]
Natural Inflow Scalar	-	False	1		False	Multiplier on [Natural Inflow]
Non-physical Inflow Penalty	$/MW	False	-1		False	Penalty applied to non-physical inflow to the storage. A value of -1 means non are allowed.
Non-physical Spill Penalty	$/MW	False	-1		False	Penalty applied to non-physical spill from the storage. A value of -1 means non are allowed.
Recycle Penalty	$/GWh	False	-1		False	Penalty for violating the recycling constraint.
Rolling Planning Bonus	$/GWh	False	0		False	Bonus for storage contents at the end of the look-ahead
Spill Penalty	$/GWh	False	0.0001	≥0	False	Penalty applied to spill from the storage to "the sea" in the last period of each simulation step.
Target	GWh	False	0	≥0	False	storage target
Target Custom	GWh	False	0	≥0	False	end of horizon storage target
Target Day	GWh	False	0	≥0	False	end of day storage target
Target Hour	GWh	False	0	≥0	False	end of hour storage target
Target Level	m (Metric), ft (U.S. Imperial)	False	0	≥0	False	storage target
Target Level Day	m (Metric), ft (U.S. Imperial)	False	0	≥0	False	end of day storage target
Target Level Hour	m (Metric), ft (U.S. Imperial)	False	0	≥0	False	end of hour storage target
Target Level Month	m (Metric), ft (U.S. Imperial)	False	0	≥0	False	end of month storage target
Target Level Week	m (Metric), ft (U.S. Imperial)	False	0	≥0	False	end of week storage target
Target Level Year	m (Metric), ft (U.S. Imperial)	False	0	≥0	False	end of year storage target
Target Month	GWh	False	0	≥0	False	end of month storage target
Target Penalty	$/GWh	False	-1		False	Penalty for violating the target.
Target Week	GWh	False	0	≥0	False	end of weekly storage target
Target Year	GWh	False	0	≥0	False	end of year storage target
Trajectory Lower Bound Penalty	$/MWh	False	-1		False	Price for running the storage below the stochastic optimal storage trajectory
Trajectory Non-anticipativity	$/MWh	True	-1		False	Price for violating non-anticipativity constraints in scenario-wise decomposition mode
Trajectory Non-anticipativity Time	h	False	0	≥0	False	Window of time over which to enforce non-anticipativity constraints in scenario-wise decomposition
Trajectory Non-anticipativity Volume	GWh	True	1E+30	≥0	False	Volume of violation of non-anticipativity constraints in band
Trajectory Upper Bound Penalty	$/MWh	False	-1		False	Price for running the storage above the stochastic optimal storage trajectory
Units	-	False	1	≥0	True	Number of units of the storage
Water Value	$/GWh	True	10000		False	Incremental price of water released from storage
Water Value Point	GWh	True	1E+30	≥0	False	Volume associated with [Water Value] in multiple bands
x	-	True	0		False	Value to pass-through to solution
y	-	True	0		False	Value to pass-through to solution
z	-	True	0		False	Value to pass-through to solution

Storage Constraints Input Properties

Name	Units	Multi-band	Default Value	Validation Rule	Key Property	Description
End Level Coefficient	m (Metric), ft (U.S. Imperial)	False	0		False	Coefficient of storage end level.
End Volume Coefficient	GWh	False	0		False	Coefficient of storage end volume.
Generator Release Coefficient	MW	False	0		False	Coefficient of generator release.
Hours Full Coefficient	h	False	0		False	Coefficient of the number of hours the storage is full.
Inflow Coefficient	MW	False	0		False	Coefficient of inflow.
Initial Volume Coefficient	GWh	False	0		False	Coefficient of storage initial volume.
Loss Coefficient	MW	False	0		False	Coefficient of the loss from the storage.
Natural Inflow Coefficient	MW	False	0		False	Coefficient of natural inflow
Ramp Coefficient	GWh	False	0		False	Coefficient of change in storage end volume.
Release Coefficient	MW	False	0		False	Coefficient of release.
Spill Coefficient	MW	False	0		False	Coefficient of spill.

Storage Objectives Input Properties

Name	Units	Multi-band	Default Value	Validation Rule	Key Property	Description
End Level Coefficient	m (Metric), ft (U.S. Imperial)	False	0		False	Coefficient of storage end level
End Volume Coefficient	GWh	False	0		False	Coefficient of storage end volume
Generator Release Coefficient	MW	False	0		False	Coefficient of generator release
Hours Full Coefficient	h	False	0		False	Coefficient of the number of hours the storage is full
Inflow Coefficient	MW	False	0		False	Coefficient of inflow
Loss Coefficient	MW	False	0		False	Coefficient of the loss from the storage
Natural Inflow Coefficient	MW	False	0		False	Coefficient of natural inflow
Ramp Coefficient	GWh	False	0		False	Coefficient of change in storage end volume
Release Coefficient	MW	False	0		False	Coefficient of release
Spill Coefficient	MW	False	0		False	Coefficient of spill

Storage Conditions Input Properties

Name	Units	Multi-band	Default Value	Validation Rule	Key Property	Description
End Potential Energy Coefficient	GWh	False	0		False	Coefficient of the end potential energy in storage in the condition equation
End Volume Coefficient	GWh	False	0		False	Coefficient of the end volume in storage in the condition equation
Inflow Coefficient	MW	False	0		False	Coefficient of inflow in the condition equation
Initial Potential Energy Coefficient	GWh	False	0		False	Coefficient of the initial potential energy in storage in the condition equation
Initial Volume Coefficient	GWh	False	0		False	Coefficient of the initial volume in storage in the condition equation
Release Coefficient	MW	False	0		False	Coefficient of release in the condition equation
Spill Coefficient	MW	False	0		False	Coefficient of spill in the condition equation

Storage Globals Input Properties

Name	Units	Multi-band	Default Value	Validation Rule	Key Property	Description
FCF Shadow Price	-	True	0		False	Shadow price of water in storage in Future Cost Function

Storage Output Properties

Name	Summary Name	Property Group	Phases	Multi-band	Description
Average Utilization - %	Average Utilization - %	Production	LT Plan, MT Schedule, ST Schedule	False	Average storage utilization based on end volume
Average Working Utilization - %	Average Working Utilization - %	Production	LT Plan, MT Schedule, ST Schedule	False	Average storage utilization based on working volume
Downstream Efficiency - MW/MW	Downstream Efficiency - MW/MW	Production	LT Plan, MT Schedule, ST Schedule	False	Aggregate efficiency of generation down the river chain
Downstream Release - MW	Downstream Release - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Release downstream via waterways
Downstream Release Energy - MWh	Downstream Release Energy - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Potential energy of downstream releases
Downstream Release Rate - MW	Downstream Release Rate - MW	Production	LT Plan, MT Schedule, ST Schedule	False	Release downstream via waterways
Efficiency - MW/MW	Efficiency - MW/MW	Production	LT Plan, MT Schedule, ST Schedule	False	Efficiency of generation
End Level - m (Metric), ft (U.S. Imperial)	End Level - m (Metric), ft (U.S. Imperial)	Production	LT Plan, MT Schedule, ST Schedule	False	Storage level at the end of the period
End Potential Energy - GWh	End Potential Energy - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Potential energy of end volume
End Volume - GWh	End Volume - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Storage volume at the end of the period
Generation - MW	Generation - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Generation from exporting generators
Generator Release - MW	Generator Release - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Release for generation
Generator Release Energy - MWh	Generator Release Energy - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Potential energy of generator releases
Generator Release Rate - MW	Generator Release Rate - MW	Production	LT Plan, MT Schedule, ST Schedule	False	Release for generation
Hours Full - h	Hours Full - h	Production	LT Plan, MT Schedule, ST Schedule	False	Number of hours the storage is full
Inflow - MW	Inflow - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Inflow
Inflow Energy - MWh	Inflow Energy - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Potential energy of inflows
Inflow Rate - MW	Inflow Rate - MW	Production	LT Plan, MT Schedule, ST Schedule	False	Inflow
Initial Level - m (Metric), ft (U.S. Imperial)	Initial Level - m (Metric), ft (U.S. Imperial)	Production	LT Plan, MT Schedule, ST Schedule	False	Initial level
Initial Potential Energy - GWh	Initial Potential Energy - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Potential energy of initial volume
Initial Volume - GWh	Initial Volume - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Storage volume at the start of the period
Loss - MW	Loss - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Loss due to evaporation, leakage, etc
Marginal Cost - $/MWh	Marginal Cost - $/MWh	Production	LT Plan, MT Schedule, ST Schedule	False	Marginal energy cost of water released from the storage
Marginal Value - $/MWh	Marginal Value - $/MWh	Production	LT Plan, MT Schedule, ST Schedule	False	Marginal energy value of water held in storage
Max Potential Energy - GWh	Max Potential Energy - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Potential energy of storage at max volume
Max Release Violation - MW	Max Release Violation - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Violation of the [Max Release] and [Max Generator Release] constraint.
Max Release Violation Cost - $	Max Release Violation Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of [Max Release] and [Max Generator Release] constraint violations.
Max Release Violation Hours - h	Max Release Violation Hours - h	Production	LT Plan, MT Schedule, ST Schedule	False	Number of hours the [Max Release] or [Max Generator Release] constraint is violated.
Max Volume - GWh	Max Volume - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Maximum volume
Min Potential Energy - GWh	Min Potential Energy - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Potential energy of storage at min volume
Min Release Violation - MW	Min Release Violation - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Violation of the [Min Release] constraint.
Min Release Violation Cost - $	Min Release Violation Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of [Min Release] constraint violations.
Min Release Violation Hours - h	Min Release Violation Hours - h	Production	LT Plan, MT Schedule, ST Schedule	False	Number of hours the [Min Release] constraint is violated.
Min Volume - GWh	Min Volume - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Minimum volume
Natural Inflow - MW	Natural Inflow - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Rate of natural inflow
Natural Inflow Energy - MWh	Natural Inflow Energy - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Potential energy of natural inflows
Natural Inflow Rate - MW	Natural Inflow Rate - MW	Production	LT Plan, MT Schedule, ST Schedule	False	Rate of natural inflow
Non-physical Inflow - MW	Non-physical Inflow - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Non-physical inflow required to maintain feasible storage volumes.
Non-physical Spill - MW	Non-physical Spill - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Non-physical spill required to maintain feasible storage volumes.
Pump Load - MW	Pump Load - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Load drawn by exporting generators running in pumping mode
Ramp - GWh	Ramp - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Change in storage end volume.
Ramp Price - $/GWh	Ramp Price - $/GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Incremental value of additional ramping capability.
Ramp Violation - GWh	Ramp Violation - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Violation of the [Max Ramp] constraint.
Ramp Violation Cost - $	Ramp Violation Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of [Max Ramp] constraint violations.
Ramp Violation Hours - h	Ramp Violation Hours - h	Production	LT Plan, MT Schedule, ST Schedule	False	Number of hours the [Max Ramp] constraint is violated.
Release - MW	Release - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Total releases from storage
Release Energy - MWh	Release Energy - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Potential energy of releases
Release Rate - MW	Release Rate - MW	Production	LT Plan, MT Schedule, ST Schedule	False	Total releases from storage
Shadow Price - $/GWh	Shadow Price - $/GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Marginal value of water held in storage
Spill - MW	Spill - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Spill to "the sea"
Spill Cost - $	Spill Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Spill Penalty multiplied by the Spill amount
Spill Energy - MWh	Spill Energy - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Potential energy of spill to "the sea"
Spill Rate - MW	Spill Rate - MW	Production	LT Plan, MT Schedule, ST Schedule	False	Spill to "the sea"
Target Violation - GWh	Target Violation - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Violation of the [Target] constraint.
Target Violation Cost - $	Target Violation Cost - $000	Production	LT Plan, MT Schedule, ST Schedule	False	Cost of [Target] constraint violations.
Utilization - %	Utilization - %	Production	LT Plan, MT Schedule, ST Schedule	False	Storage utilization on end volume
Working Utilization - %	Working Utilization - %	Production	LT Plan, MT Schedule, ST Schedule	False	Storage utilization based on working volume
Working Volume - GWh	Working Volume - GWh	Production	LT Plan, MT Schedule, ST Schedule	False	Working storage volume at the end of the period
x	x	Pass-through	LT Plan, MT Schedule, ST Schedule	True	Value to pass-through to solution
y	y	Pass-through	LT Plan, MT Schedule, ST Schedule	True	Value to pass-through to solution
z	z	Pass-through	LT Plan, MT Schedule, ST Schedule	True	Value to pass-through to solution