There is an example file called MicroCogeneration.idf.
The CHP unit needs to be part of an ElectricLoadCenter.
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of George Sent: Tuesday, November 30, 2010 1:02 PM To: EnergyPlus_Support@xxxxxxxxxxxxxxx Subject: [EnergyPlus_Support] microCHP
Hi to everyone.
I am using a Generator micro CHP as a replacement of a boiler for a domestic heat.
firstly I create an idf model for a house with baseboard heating radiators feed up from a boiler. The model run successfully and i get very realistic results.
The next step was to replace the boiler unit with a micro CHP in order to make a comparison.
The simulation run again successfully but when i try to obtain results as the gas consumption of the CHP unit the results was simple zero. meaning that the unit dose not work.
I used the drawing tool which shown that the only change was just the replacement of the boiler to a chp.