Excessive solar gains

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Hi everyone,

I am performing a dynamic simulation of a building in Energyplus.

I am strungling with excessive solar gains when windows are directly exposed to the sun. The temperature calibration of my building is quite reasonable except some peaks hours and I am quite sure that this is due to excessive solar gains when windows are directly exposed to the sun.

For example, East-oriented windows have excessive solar gains in the morning, South-oriented windows during noon and West-oriented windows in the afternoon.

I verified my weather file, but all the parameters are fine. So, it has to due something with the window definition in Energyplus. I am using WindowMaterial:SimpleGlazingSystem. Does anybody has an idea how I can compress those peaks to reasonable values without changing the Solar Heat Gain Coefficiënt, because these are given in the as-build plans AND will effect the rest of my simulation.

Kind regards.