Generator Min Units Built in Year

Units:	-
Mode:	Input Only
Multi-band:	False
Default Value:	0
Validation Rule:	≥0
Key Property:	No
Description:	Minimum number of units automatically constructed in any single year of the planning horizon

Generator Min Units Built in Year sets a lower bound on the number of units built by LT Plan in any single year of the planning horizon. It is generally used to force the building a particular option out of a multi-unit station as in the following example:

Table 1: Min Units Built in Year Example
Property	Value	Units	Date From	Date To
Units	0	-
Max Capacity	500	MW
FO&M Charge	50	$/kW/year
Max Units Built	3	-
Min Units Built in Year	1	-	1/01/2025	31/12/2025
Build Cost	1500	$/kW
Economic Life	25	years
WACC	10	%

Note that Min Units Built in Year must be compatible with Max Units Built i.e. there must be enough units allowed to be built to meet this constraint. In the above example it is allowed to build up to three units in the planning horizon, but one must be built in year 2025.