Figure shows comprehensive simulation results for ∞ = 4.4, P was changing from 1.0 × 10 14 to 1.0 × 10 16 rad/s, Γ is from 1.0×10 14 to 1.0 ×10 16 1/s. This presents analysis of effect of P and Γ on resonances due to the ground plate. It is obvious that P ≥ 10 16 is required to obtain metasurface with optical properties useful for radiative cooling and thermal emitters. Also, a smaller Γ is required for stronger modulation of and . If the electron conductivity is too small, which means smaller P larger Γ, it is difficult to form the mirror image induced by plasmon resonance on the surface of ITO, due to the ohmic losees. Therefore optical properties becomes similar to the nanodisc structures made out of dielectric material. FDTD simulation shows separation between conventional nanodiscs and metasurfaces, that conductivity beyond = 1 × 10 5 Ω.cm -1 is required to obtain metasurface properties extending from visible to the MIR spectral region . It is worth noting, that even a lower conductivity at 10 4 Ω.cm -1 , larger nanodiscs, longer wavelengths, optical properties of metasurfaces become recognisable. This is due to the frequency dependence of materials parameter in Eqn. , where the imaginary part 2 becomes larger following trend for a larger . With increasing , the absorption of ITO also becomes larger and transmittance becomes negligible.