How to Achieve Higher Energy Efficiency with Bifacial Solar Panels

Solar energy technologies are advancing rapidly. Today, next-generation systems that generate energy not just from the front surface of a panel but from both sides are already available. This technology is called a "Bifacial Solar Panel."

Solinved achieves 15–30% more energy generation compared to conventional panels with its Bifacial (double-sided) panel solutions developed for high efficiency targets.
In this article, we will examine in detail how bifacial solar panels work, how they increase energy efficiency, and how Solinved makes this technology as efficient as possible.

What Is a Bifacial Solar Panel?

The word "bifacial" means "double-sided." While conventional panels absorb sunlight only from their front surface, bifacial panels generate electricity by receiving light from both their front and rear surfaces.

In this way, not only direct incoming light but also light reflected from the ground (the albedo effect) contributes to energy generation.

Solinved's bifacial panels are both durable and highly efficient thanks to their high-quality glass-glass construction.

How Do Bifacial Panels Work?

Front Surface: Receives direct sunlight and generates electricity.

Rear Surface: Also captures light reflected from the ground or surroundings. This light creates a second energy generation source on the back side of the cells.

Dual-Layered Glass Structure: The transparency of both the front and rear surfaces means both sides of the panel are active.

Energy Efficiency Gain: In total, 10% to 30% higher energy production compared to conventional panels is achievable.

Factors That Increase the Energy Efficiency of Bifacial Panels

1. Reflective Ground Surface (Albedo Effect)

The amount of light reflected from the ground directly affects panel efficiency. White gravel, light-colored surfaces, or snow-covered ground increase reflectivity and allow the rear surface to receive more light.

Solinved recommendation: When selecting the installation area for panels, a ground surface with high reflectivity should be preferred.

2. Panel Height and Tilt Angle

As the panel's height from the ground increases, the rear surface's viewing angle of the sky broadens and it receives more reflected light. Additionally, an optimum tilt angle enables both direct and reflected light to be received in the best possible way.

The Solinved engineering team conducts custom installation simulations for each project to determine the ideal angle and height values.

3. Glass-Glass Design

The dual-glass construction used in Solinved's bifacial panels provides high transmittance on both the front and rear surfaces. This structure also protects the panel from moisture, UV rays, and environmental effects.

As a result:

Longer lifespan (25–30 years of service),

High mechanical durability,

Minimum performance loss are achieved.

4. High-Efficiency Cell Technology

The cells used in Solinved bifacial panels feature PERC (Passivated Emitter Rear Contact) or TOPCon (Tunnel Oxide Passivated Contact) technology. These cells enable greater light absorption, delivering high conversion efficiency.

Panel efficiency: Can reach values exceeding 21%.

5. Temperature and Light Intensity Sensitivity

Bifacial panels experience less performance loss at high temperatures. This provides an advantage especially in regions with a hot climate such as Turkey.

Solinved panels operate at high efficiency even during summer months thanks to their low temperature coefficient.

Key Features of Solinved Bifacial Panels

Dual-Surface Energy Generation: Generates more electricity by using both direct and reflected light.

Glass-Glass Construction: Features a durable, long-lasting, and aesthetically pleasing design.

High-Efficiency Cell Technology (TOPCon / PERC): Conversion efficiency exceeds 21%.

PID (Potential Induced Degradation) Protection: Minimizes performance degradation.

Long Lifespan and Warranty: Performance guarantee of up to 30 years.

Solinved Compatibility: Full integration with smart inverters, batteries, and solar drive systems.

Where Are Bifacial Panels Used?

1. Ground-Mounted Solar Power Plants (SPP): In systems installed in wide open areas, high ground mounting allows maximum output from the rear surface.

2. Commercial and Industrial Rooftops: In large-scale facilities, high energy gains are achieved thanks to the reflective properties of the roof.

3. Snow- or Sand-Covered Regions: On white or light-colored surfaces, the albedo effect significantly increases production.

4. Solar Agrivoltaic Applications: Offers dual-directional production advantages in systems that combine agricultural irrigation and energy generation.

5. Solar-Powered Charging Stations: When used together with Solinved Charge, energy generation and storage efficiency increase.

Solinved Recommendations for Boosting Energy Efficiency with Bifacial Panels

Choose a Ground Surface with High Albedo: A light-colored surface can increase panel efficiency by up to 10%.

Correct Angle and Mounting Height: The Solinved engineering team performs a custom angle calculation for each project.

Smart Inverter Integration: Solinved's MPPT-supported smart inverters optimize dual-directional production.

Integration with Energy Storage Systems: Surplus energy can be stored in Solinved lithium batteries.

Periodic Cleaning and Maintenance: Cleaning both the front and rear surfaces maintains efficiency.

Dual-Surface Energy Efficiency with Solinved

Solinved operates with the principles of high efficiency, durability, and sustainability in solar energy.
With its bifacial panel solutions, it not only generates more energy but also provides a long-term investment advantage.

Thanks to Solinved's integrated system approach:

• Panels (Bifacial + TopCon)
• Smart Inverters (MPPT-supported)
• Lithium Battery Systems
• Solar Drives and Charging Stations

operate in full harmony.

Result:

• More energy,
• Lower cost,
• Longer-lasting systems.

FAQ (Frequently Asked Questions)

1. How much more efficient are bifacial solar panels compared to single-sided panels?
With correct mounting and a suitable ground surface, they generate 15–30% more energy.

2. Are bifacial panels suitable for all regions?
Yes, but higher yields are obtained in regions with reflective surfaces (snow, light-colored soil, concrete).

3. What is the lifespan of Solinved bifacial panels?
They carry an average performance guarantee of 30 years.

4. Does dirt on the rear surface affect efficiency?
Yes, regular cleaning and maintenance preserve efficiency.

5. Can energy be stored with bifacial panels?
Yes, surplus energy can be stored by integrating with Solinved lithium battery systems.