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EnergyPlus does not have a model for a concentrated solar power collecter like a parabolic trough. You might be able to use the flat plate model and approximate the effect by modifying the performance. The SolarCollector:FlatPlate:Water input object could be used with the SolarCollector:Performance:FlatPlate input object. The SolarCollector:Performance:FlatPlate input object has inputs for the efficiency that can be increased as well as angle modifiers. These are documented in the InputOutputReference but most of the details are in the EngineeringReference.

EnergyPlus does not have a model for a concentrated solar power collecter like a parabolic trough. You might be able to use the flat plate model and approximate the effect by modifying the performance. The SolarCollector:FlatPlate:Water input object could be used with the SolarCollector:Performance:FlatPlate input object. The SolarCollector:Performance:FlatPlate input object has inputs for the efficiency that can be increased as well as angle modifiers. These are documented in the InputOutputReference but most of the details are in the EngineeringReference.

If that does not work, you might be able to add an Energy Management System (EMS) script to approximate the performance.