In this paper, the photonic radiative cooler performance is analysed for year 2019 at various Indian locations considering the diversity of climate and forecasted for the year 2030. The effects of three types of climate change are considered: geographical, seasonal, and year-wise. Some photonic coolers with different emissive profiles are also compared. As the radiative cooling depends upon air temperature, humidity, wind speed, and solar flux intensity, the effects of influencing climatic or weather parameters during summer months are studied extensively and major performance influencing factors are identified. Photonic radiative cooler performance in energy saving as rooftop envelope assisted to the conventional air conditioning system is assessed and cooling energy saving of 25-32 kWh_(th)/month for selected locations was observed. The study reveals that windshield is the necessary condition to get net cooling flux through the rooftop. The reduction in cooling load on active systems of 34% is observed for low humidity locations with the integration of radiative cooler as a roof envelope.
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