Energy simulation problem with "surface is a casting surface and is non-convex"


The EnergyPlus simulation still works but I received the following error:

  1. The simulation has not run correctly because of this severe error:
    ** Severe ** DetermineShadowingCombinations: Surface=“SHDSRF_0_0_4EDC3FD2-8CB5-42DA-9D94-171082F545A5” is a casting surface and is non-convex.

I read about the other related threads and noticed that the solution is to split the surface faces. But splitting the surface faces may increase the simulation time. Would this error affect the simulation results (I am able to generate the result report)? Thank you.


It affects your energy related results negligible, but it might influences more your comfort results.