In such articles as contemplated by this invention, when the said glass substrate has a thickness of about 2 mm-6 mm, the coated glass substrate has a visible transmittance of at least about 70%, preferably about 72% -76%; a normal emissivity (En) of about 0.02-0.09, preferably about 0.03-0.06; a hemispherical emissivity (Eh) of about 0.03 to 0.12, preferably about 0.04 to 0.07; a sheet resistance