<p>Though there are a large number of studies on the rooftop solar PV systems, the factors such as space constraint and the rising number of muti-storey buildings necessitate the assessment of the potential for electricity generation from the wall-mount solar PV systems, which is important from the perspective of energy for sustainable development and a net zero energy building. This study investigates the potential for electricity generation through rooftop and wall-mounted solar photovoltaic (PV) panels across India, choosing five distinct climatic zones. These locations have been selected as representatives for the whole geographical jargon of India, and considering that electricity consumption varies by climatic zone. Simulations were performed using the System Advisor Model (SAM) alongside weather data from the National Solar Radiation Database (NSRDB) to assess the potential of solar PV electricity generation. Prior to the simulations, the methodology was validated against experimental data. To estimate the overall efficiency of a panel, the total solar radiation incident on a tilted surface was calculated using the isotropic sky diffuse model. The findings reveal significant seasonal variations in solar radiation and PV system performance across different orientations of the panel. While rooftop PV systems consistently outperform wall-mounted systems, east and west-facing wall installations demonstrate considerable potential, and south-facing systems during winter months. This study offers insights for optimizing PV installations to enhance electricity production and contributes to sustainable energy planning in urban and rural settings of India.</p>