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Objects and Methods : Thermal : User Methods : Linear Economic Value
Linear Economic Value
* None
No evaluation is made.
* Calculate Linear Economic Value
This method applies a time dependent linear value to power generated. This method is also known as POSE or System Lambda. The order of power source evaluation doesn’t matter, only which power sources are being evaluated, because of the linear valuation. In general, the calculation is a simplified version of the existing block calculation. The value of hydropower is in the Linear Hydro Costs series slot.
The power sources to use in the evaluation are selected in the Linear Power Sources Used table slot. The possible power sources are conventional hydropower, pumped storage, and allocated power. The calculated value of each type of power is output to a corresponding series slot.
Allocated power is constrained by minimal and maximal power generation for each time period combined with periodic total energy requirements. The power is allocated for maximal economic gain in coordination with other power sources.
After calculating the individual economic components for each time period, the totals for all time periods are placed in the Linear Total Values table slot.
Slots Specific to This Method
 Linear Hydro Costs
Type: Series Slot
Units: PowerCost
Description: Value of each unit of hydropower generated.
Information: This method does not have Marginal Operating Cost or Previous Marginal Operating Cost slots because the values would be the same as this slot.
I/O: Input
 Linear Power Sources Used
Type: Table Slot
Units: None
Description: One row for each power source and one column with a positive value for power sources to be used.
Information: NaN indicates the power source doesn’t apply or has already been included in economic calculations.
I/O: Input
 Linear Conventional Replacement Value
Type: Series Slot
Units: None
Description: Calculated value of conventional hydropower using linear evaluation.
Information:  
I/O: Output
 Linear Pump Replacement Value
Type: Series Slot
Units: Value
Description: Calculated value of net hydropower generated by pumps using linear evaluation.
Information:  
I/O: Output
 Linear Allocated Replacement Value
Type: Series Slot
Units: Value
Description: Calculated value of allocated hydropower using linear evaluation.
Information:  
I/O: Output
 Linear Avoided Operating Cost
Type: Series Slot
Units: Value
Description: Combined value of conventional, pump, and allocated hydropower using linear evaluation.
Information:  
I/O: Output
 Linear Net Avoided Cost
Type: Series Slot
Units: Value
Description: Linear Avoided Operating Cost minus the value of water used for spill or generation.
Information:  
I/O: Output
 Linear Total Values
Type: Table Slot
Units: None
Description: Sum over time for several slots used in the linear economic evaluation.
Information: One column. One row for each slot, as follows:
Conventional Hydro Power
Pump Power Evaluated
Allocated Energy Evaluated
Conventional Total Avoided Cost
Pump Total Avoided Cost
Allocated Total Avoided Cost
Total Avoided Operating Cost All
Regulation Value
Reg. Operating Cost
Total Future Value of Used Energy
Total Spill Cost
Cumul Stor Value
Net Total Avoided Cost
Objective
I/O: Output
 Allocated Minimum
Type: Agg Series Slot
Units: Power
Description: Minimum power generation for projects with allocated energy.
Information: One column for each project to be allocated.
I/O: Input
 Allocated Maximum
Type: Agg Series Slot
Units: Power
Description: Maximum power generation for projects with allocated energy.
Information: One column for each project to be allocated.
I/O: Input
 Allocated Total Energy
Type: Agg Series Slot
Units: Energy
Description: Total energy to be allocated from a project over some time period.
Information: One column for each project to be allocated. Totals should be entered with some consistent period. For example, values entered only once a day will be allocated across that day assuming the model has a timestep smaller than one day.
I/O: Input
 Allocated Detail Energy
Type: Agg Series Slot
Units: Energy
Description: Result of allocating the energy to individual time periods.
Information: One column for each project to be allocated.
I/O: Output
 Allocated Energy Sum
Type: Series Slot
Units: Energy
Description: Sum of allocated energy across projects.
Information: Only used in optimization to assist in mathematical representation.
I/O: Output
Revised: 07/09/2023