let us consider a simple 20. m2 rooftop installation of crystalline-silicon (c-si) pv modules. remember that pv modules are rated to receive 1.0 kw/m2 of solar radiation. assuming peak solar irradiance of 1.0 kw/m2, what would the peak output of this system be (in kw) if the modules are 18% efficient? [2 points]