Scientists at the Vellore Institute of Technology in India have researched the effect of tilt angle on the energy production of solar panels mounted on a white surface, revealing that more electricity is produced by panels oriented at a 30-degree angle.
corresponding author of the study, Suprava Chakraborty, told PV Magazine: ‘We looked for the best angle to maximize energy production from bidirectional PV modules (solar panels), which captures both direct and reflected radiation.’
He stated that our research shows the significance of ground reflectance, particularly the application of white painted surfaces, in enhancing the performance of bi-directional solar panels.
The analysis was carried out by continuously adjusting the tilt angle of a 440 W bifacial monocrystalline PERC panel supplied by Indian manufacturer Lum Solar Pvt.
The solar panels were installed on the roof of the research institute on sunny days from 0 to 90 degrees in February this year, and measurements were taken at hourly intervals between 9am and 5pm.
Eight different tilt angles were chosen for this, ranging from 0° (horizontal) to 90° (vertical), the experts explained.
He mentioned that studies indicated bifacial PV modules positioned at 30 degrees outperformed those positioned at 60 degrees within the tilt range of 30 degrees to 60 degrees.
The analysis showed that the maximum daily average power output was achieved when the module angle was at 30 degrees, resulting in a power output of 316.85 W and a two-way beam ratio between 0.20 and 0.40. happened