When viewing props in the model browser, you can see different tabs that tell you different things about the current prop you have selected, you want to look for the "Info" tab and check which prop types said prop is compatible with, the powerhouse turbines seem to only be compatable with prop_dynamic, so you would change the classname of the prop_static to prop_dynamic and it should work, also since it's a stationary prop I recommend turning off shadows, as prop_dynamics with shadows look really weird if the prop is stationary