Optimal tilt angles for bifacial solar panels can vary depending on weather conditions, latitude, and the use of reflective surfaces. Here are some guidelines for different scenarios:
General Optimal Tilt Range
- General Use: Optimal tilt angles for bifacial solar panels typically fall between 30° and 60°, with a 30° tilt often being recommended for maximizing energy production due to a balance between direct and reflected irradiance.
- Reflective Surfaces: When using high-albedo surfaces like white paint, the reflectance can enhance the performance of bifacial panels.
Specific Weather Conditions
- Summer: In summer, a lower tilt angle (around 20°) is generally optimal to maximize solar radiation capture during longer days.
- Winter: For winter conditions, when the sun is lower in the sky, a higher tilt angle (around 40°) can improve energy collection. This also helps with snow shedding in regions with significant snowfall.
Considerations for Different Regions
- Northern Regions: In places like Northern Vermont, a slightly higher tilt (around 38°) may be beneficial for both energy production and snow shedding.
- Southern Regions: In regions closer to the equator, lower tilt angles may be more suitable due to the sun’s higher position in the sky.
Impact of Bifaciality
- Bifacial Gains: Bifacial panels benefit from reflective surfaces by capturing additional light. Increasing the tilt angle can enhance bifacial gains, especially in conditions with high rear-side irradiance.
- Snow Cover and Wind: In areas prone to snow or high winds, the panel height and tilt must also consider these factors to ensure durability and optimal energy production.
In summary, while a general optimal tilt range exists, adjustments should be made based on specific environmental conditions and seasonal variations for maximum efficiency.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-are-the-optimal-tilt-angles-for-bifacial-solar-panels-in-various-weather-conditions/
