Monocrystalline vs. Polycrystalline Solar Panels | EnergySage
Monocrystalline vs. Polycrystalline Solar Panels
Monocrystalline panels are usually more efficient than polycrystalline panels. However, they also usually come at a higher price.
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When you evaluate solar panels for your photovoltaic (PV) system, you'll encounter two main categories of panels: monocrystalline solar panels (mono) and polycrystalline solar panels (poly). Both types produce energy from the sun, but there are some key differences to be aware of.
Key Takeaways
- Monocrystalline solar panels have black-colored solar cells made of a single silicon crystal and usually have a higher efficiency rating. However, these panels often come at a higher price.
- Polycrystalline solar panels have blue-colored cells made of multiple silicon crystals melted together. These panels are often a bit less efficient but are more affordable.
- Homeowners can receive the federal solar tax credit no matter what type of solar panels they choose.
- When comparing mono vs. poly solar panels, both will save you money on electricity. The choice comes down to your personal preference, space constraints, and the best financing option.
What are Monocrystalline and Polycrystalline Solar Panels?
Both monocrystalline and polycrystalline solar panels serve the same function, and the science behind them is simple: they capture energy from the sun (solar energy) and turn it into electricity. They're both made from silicon; many solar panel manufacturers produce monocrystalline and polycrystalline panels.
Monocrystalline Solar Panels
A monocrystalline solar panel is made from monocrystalline solar cells or "wafers." Monocrystalline wafers are made from a single silicon crystal formed into a cylindrical silicon ingot. Although these panels are generally considered a premium solar product, the primary advantages of monocrystalline panels are higher efficiencies and sleeker aesthetics. Because a monocrystalline cell is composed of a single crystal, the electrons that generate a flow of electricity have more room to move. As a result, monocrystalline solar cells are more efficient than their polycrystalline counterparts. You will need fewer monocrystalline panels for your roof to produce more kWh of electricity than others, but they're more expensive per panel.
Polycrystalline Solar Panels
Polycrystalline solar panels are also made from silicon. However, instead of using a single silicon crystal, manufacturers melt many silicon fragments together to form wafers for the panel. Polycrystalline solar cells are also called "multi-crystalline" or many-crystal silicon.
Polycrystalline solar panels generally have lower efficiencies than monocrystalline cell options because there are many more crystals in each cell, meaning less freedom for the electrons to move. Due to the easier manufacturing process, these panels have a lower price point on average. In addition, polycrystalline solar panels tend to have a blue hue instead of the black hue of monocrystalline solar panels. Because they are less efficient than other panels, you will need more to provide electricity for your home, but their individual cost is lower.
How do Monocrystalline and Polycrystalline Solar Panels Compare on Key Metrics?
It's all about the metrics. Here's how monocrystalline and polycrystalline solar panels stack up against each other in a few key areas:
Mono vs. Poly Solar Panels: Key Metrics
| Monocrystalline Panels | Polycrystalline Panels | |
|---|---|---|
| Cost | More expensive | Less expensive |
| Efficiency | More efficient | Less efficient |
| Aesthetics | Solar cells are a black hue | Solar cells have a blue-ish hue |
| Lifespan | 25+ years | 25+ years |
| Temperature Coefficient | Lower temperature coefficient/more effective when temperature changes | Higher temperature coefficient/less effective when temperature changes |
Cost
When comparing panels alone, monocrystalline solar panels are more expensive than polycrystalline solar panels. That doesn't mean they may not be your best option. The silicon structure is the main factor determining the cost difference between these two solar panel types.
Efficiency
In general, monocrystalline solar panels are more efficient than polycrystalline solar panels because they're cut from a single crystal of silicon. Monocrystalline solar panels can reach efficiencies of over 23% in some instances, while most polycrystalline models top out below 20%.
Aesthetics
The primary difference in aesthetics between the two types of solar panels is their color: monocrystalline panels are usually black, while polycrystalline panels can appear to have a blue hue.
Lifespan
Both monocrystalline and polycrystalline panels will produce electricity efficiently for 25 years or more.
Temperature Coefficient
Monocrystalline solar panels tend to outperform polycrystalline models regarding temperature coefficient, meaning they perform better in warm temperatures.
Why You Shouldn't Rule Out Polycrystalline Panels
While monocrystalline panels have a higher efficiency, polycrystalline panels can still make sense, depending on your situation.
Frequently Asked Questions Related to Monocrystalline vs. Polycrystalline Solar Cells
Is solar cell technology still improving? Many scientists are currently working on ways to make solar cells even more efficient.
Can you mix polycrystalline and monocrystalline solar cells? Technically, yes. You can mix polycrystalline with monocrystalline solar cells, but it's not recommended.
What are the advantages of monocrystalline cells? Monocrystalline cells generally have the highest efficiency rates and a longer projected lifespan.
What is the most effective type of solar panel? Monocrystalline solar panels are generally considered the most effective and efficient type of solar panel, but polycrystalline panels are also a viable option depending on your needs.
Conclusion
Saving money is one of the best reasons to go solar. Whether you choose mono or poly solar panels, you'll be decreasing your electricity bills. Your decision comes down to your personal preferences, space constraints, and financing options.