If you're considering whether to buy bifacial solar panel technology, one of the biggest questions is whether the additional benefits make the investment worthwhile.
Bifacial solar panels can generate electricity from both the front and rear of the module, potentially increasing total energy production compared with traditional monofacial panels. However, the financial benefit depends heavily on the installation, system design and amount of useful light reaching the rear of the panels.
What Makes Bifacial Panels Different?
Traditional monofacial solar panels primarily generate electricity from sunlight reaching the front of the module.
Bifacial panels can also capture light reaching the rear. Reflected and scattered sunlight from surfaces beneath and around the panels can reach the rear solar cells and contribute to additional electricity generation.
This gives bifacial technology the potential to produce more electricity from the same number of modules.
The Potential for Higher Energy Generation
The main reason to consider bifacial panels is their potential for additional energy generation.
The amount of additional electricity, known as bifacial gain, varies depending on the installation.
Important factors include:
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Surface reflectivity
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Panel height
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Panel spacing
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Orientation
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Tilt angle
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Shading
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Local solar conditions
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Mounting configuration
A system specifically designed to maximise rear-side exposure can potentially benefit much more from bifacial technology than an installation where the rear of the panels receives very little light.
Where Can Bifacial Panels Provide the Most Value?
Bifacial panels can be particularly attractive for installations where the rear of the modules has good access to reflected light.
Ground-Mounted Solar
Ground-mounted systems can provide favourable conditions because the panels can be elevated above the ground, allowing light to reach the rear surface.
Commercial Solar
Large commercial systems can benefit from carefully planned panel layouts and mounting structures designed to maximise rear-side exposure.
Solar Car Parks
Elevated solar car parks can allow sunlight to reach both sides of the panels, making bifacial modules an attractive option for some projects.
Residential Solar
Bifacial panels can also be installed on residential properties, although the potential benefit depends heavily on the roof surface, panel elevation and mounting arrangement.
Is There an Additional Upfront Cost?
The overall cost of a solar system depends on the panels, mounting equipment, inverter, electrical components and installation.
In some projects, maximising bifacial performance may require a particular mounting arrangement or additional space between modules.
This means the potential increase in energy generation should be compared against the complete installation cost rather than simply the price of the panels.
Consider Long-Term Value
When looking to buy bifacial solar panel equipment, it's important to think beyond the initial purchase price.
The long-term value of a panel can depend on:
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Energy production
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Panel efficiency
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Bifaciality
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Warranty
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Degradation rate
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Installation costs
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Maintenance
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Expected operating lifespan
A panel that costs slightly more initially may provide better value if it generates more electricity and maintains strong performance over many years.
What About Battery Storage?
Bifacial solar panels can be combined with battery storage to make greater use of the electricity generated.
During periods of high solar production, excess electricity can potentially be stored and used later when solar generation is lower.
This can be particularly useful for properties that use more electricity during the evening or at other times when solar generation is limited.
Are Bifacial Panels Always Better?
No. Bifacial technology isn't automatically the best option for every installation.
The rear of the panels needs access to useful light for the technology to provide a significant additional benefit.
For example, panels mounted very close to a dark surface may have limited rear-side generation. In this situation, the additional cost of bifacial technology may not provide the same value as it would in a well-designed elevated or ground-mounted installation.
The site should therefore be assessed before choosing between bifacial and monofacial panels.
What Should You Check Before You Buy?
If you're planning to buy bifacial solar panel equipment, consider the following:
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Power rating – Check the panel's rated output.
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Efficiency – Compare how effectively it converts sunlight into electricity.
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Bifaciality factor – Review the rear-side performance specification.
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Warranty – Check product and performance warranties.
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Degradation rate – Consider expected long-term performance.
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Dimensions – Make sure the panels fit the available space.
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Compatibility – Ensure compatibility with your inverter and mounting system.
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Installation conditions – Assess how much useful light can reach the rear.
Calculate the Potential Return on Investment
Rather than simply comparing panel prices, consider the expected energy generation over the system's lifetime.
A professional solar installer can assess your site and estimate annual energy production based on factors such as location, orientation, shading, mounting arrangement and expected bifacial gain.
This can then be compared with the total cost of the installation to help determine whether bifacial technology makes financial sense.
Think About Your Specific Installation
The best solar panel isn't necessarily the one with the highest wattage or lowest price.
Your available space, energy requirements, roof or ground conditions and future plans should all influence your decision.
If your installation provides excellent rear-side exposure, bifacial technology may offer a strong opportunity to increase energy generation without simply adding more panels.
Conclusion
So, are bifacial solar panels worth the investment?
For the right installation, they can be.
Their ability to capture sunlight from both sides of the module can provide additional electricity generation and potentially improve the long-term value of a solar system.
However, the benefits depend on the installation. Surface reflectivity, panel height, spacing, shading and overall system costs all need to be considered.
If you're planning to buy bifacial solar panel equipment, focus on the complete system rather than simply choosing the cheapest or highest-wattage option.
With suitable conditions, quality equipment and careful installation, bifacial solar panels can be an effective way to maximise renewable energy generation.
This concludes our five-part series on “buy bifacial solar panel”, covering how bifacial technology works, its energy potential, choosing the right panels, installation considerations and whether the investment is worthwhile.
