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I switched the reporting frequency to detailed and modified all Output:Variable to be this:

! Using regular expressions to match anything that starts with "MICROCHP" and ends with "NODE"
Output:Variable,MICROCHP.*NODE,System Node Temperature,detailed;
Output:Variable,MICROCHP.*NODE,System Node Mass Flow Rate,detailed;

Output:Variable,*,Generator Coolant Inlet Temperature,detailed;
Output:Variable,*,Generator Coolant Outlet Temperature,detailed;
Output:Variable,*,Generator Engine Temperature,detailed;
Output:Variable,*,Generator Produced Electric Power,detailed;
Output:Variable,SMALL SOFC HEAT REC INLET NODE,System Node Temperature,detailed;
Output:Variable,SMALL SOFC HEAT REC INLET NODE,System Node Mass Flow Rate,detailed;
Output:Variable,*,Water Heater Final Tank Temperature,detailed;
Output:Variable,*,Water Heater Heating Rate,detailed;

Now here's a graph showing the importance of whether that cogen is actually running, this is for January design day for a subset of the hours (between 8:00 and 12:00). Click on it to enlarge:

image description

I switched the reporting frequency to detailed and modified all Output:Variable to be this:

! Using regular expressions to match anything that starts with "MICROCHP" and ends with "NODE"
Output:Variable,MICROCHP.*NODE,System Node Temperature,detailed;
Output:Variable,MICROCHP.*NODE,System Node Mass Flow Rate,detailed;

Output:Variable,*,Generator Coolant Inlet Temperature,detailed;
Output:Variable,*,Generator Coolant Outlet Temperature,detailed;
Output:Variable,*,Generator Engine Temperature,detailed;
Output:Variable,*,Generator Produced Electric Power,detailed;
Output:Variable,SMALL SOFC HEAT REC INLET NODE,System Node Temperature,detailed;
Output:Variable,SMALL SOFC HEAT REC INLET NODE,System Node Mass Flow Rate,detailed;
Output:Variable,*,Water Heater Final Tank Temperature,detailed;
Output:Variable,*,Water Heater Heating Rate,detailed;

Now here's a graph showing the importance of whether that cogen is actually running, this is for January design day for a subset of the hours (between 8:00 and 12:00). The shaded areas are where ('MICROCHP SENERTECH PUMP-MICROCOGEN1NODE', 'System Node Mass Flow Rate', 'kg/s') is strictly > 0

Click on it to enlarge:

image descriptionimage description