Les panneaux polycristallins sont-ils plus adaptés aux régions françaises moins ensoleillées ?
Many in France’s cloudy regions question the best panneaux photovoltaïques for their homes. Polycrystalline panneaux solaires polycristallin perform reliably even with rayonnement diffus.
This article examines their rendement énergétique, cost-effectiveness, and durée de vie to guide your installation solaire. Discover if polycrystalline panels are right for you.
Key Takeaways
- Cheaper Price: Polycrystalline panels cost €0.85 per watt. Monocrystalline panels cost €1.20 per watt. A 3 kW system costs €2,550 for polycrystalline and €3,600 for monocrystalline.
- Lifespan: Polycrystalline panels last about 30 years. Monocrystalline panels last around 35 years. After 25 years, poly panels keep about 75% efficiency. Monocrystalline panels keep about 85%.
- Best for Sunny Areas: Polycrystalline panels work best in sunny and warm regions of France. They handle harsh weather well and need little maintenance.
- Better in Less Sunny Areas: Monocrystalline panels perform better in cloudy or less sunny regions. They maintain higher energy efficiency when sunlight is limited.
- Long-Term Savings: Monocrystalline panels can save homeowners up to €58,588 over 30 years. Customers pay only €0.09 per kilowatt-hour with solar panels, compared to €0.18 on the public grid.
Efficiency in Low Light Conditions
Polycrystalline panneaux solaires work better than monocrystalline ones in less sunny areas. They capture energy from diffused light, increasing overall production énergétique.
Polycrystalline vs. Monocrystalline performance
Here is a comparison between polycrystalline and monocrystalline panels.
| Feature | Polycrystalline | Monocrystalline |
|---|---|---|
| Efficiency in Low Light | Lower performance in cloudy regions | Higher efficiency in less sunny areas |
| Optimal Climate | Best for sunny, hot regions | Suitable for regions with limited sunlight |
| Lifespan | About 30 years | About 35 years |
| Performance After 10 Years | Remains around 80% | Remains around 93% |
| Performance After 25 Years | Remains around 75% | Remains around 85% |
Cost-Effectiveness
Polycrystalline solar panels (“panneau solaire polycristallin”) often cost less upfront than monocrystalline (“monocristallin”) options, making them a smart choice for cellules photovoltaïques in France’s cloudy areas—discover how they can save you money.
Initial cost comparison
Monocrystalline panels cost €1.20 per watt, totaling €3 600 for a 3 kW system. Polycrystalline panels cost €0.85 per watt, totaling €2 550.
| Type | Cost per Watt (€) | Total Cost for 3 kW (€) |
|---|---|---|
| Monocrystalline | 1.20 | 3 600 |
| Polycrystalline | 0.85 | 2 550 |
Long-term savings potential
Investing in panneau solaire monocristallin can lead to significant savings over time. In Gard, Occitanie, the payback period is just 7 years. After 30 years, homeowners can save up to €58,588.21.
Laura and David benefited from this technology, saving an extra €110 each year. Effy customers pay only €0.09 per kilowatt-hour, compared to €0.18 on the public grid. Also, 60% of their energy is self-generated, increasing their long-term savings.
Switching to panneau solaire monocristallin has transformed our energy bills and secured our financial future.
Durability and Maintenance
Polycrystalline panels are built to withstand harsh weather and need little upkeep, making them ideal for less sunny areas—learn more about their lasting performance.
Suitability for less sunny regions
Monocrystalline panels excel in regions with limited sunlight. They keep high efficiency even when light is low. Effy supplies European-made monocrystalline panels with a 25-year guarantee.
A 3 kW peak system costs around €8,000. Financial support is available through Effy’s partnership with BNP. These panels are durable and need little maintenance in less sunny areas.
Conclusion
Polycrystalline panels are cheaper to buy and last about 35 years. They work best in sunny, warm parts of France. In places with less sun, monocrystalline panels produce more energy.
While polycrystalline panels still generate power, their efficiency is lower in cloudy areas. Choose the right panels by considering your local sunlight and budget.
