Hi I am going to propose strategies of integrating solar thermal energy into existing heating or cooling systems in buildings to reduce their energy consumption. one of usual strategies to integrate solar energy into existing systems are "combisystems" . such as this studies has been done using TRNSYS before But I'm going to use openstudio to simulate them. I don't know about openstudio and energyplus but I think that openstudio is easier to use and energyplus is a coding tool, any way : Is openstusio able to simulate such this systems ? what about energyplus? or is there any software to be linked to them to simulate them? Thank you