The difference between monocrystalline and polycrystalline panels is crucial when investing in a photovoltaic system. EcoSolaris Romania explains in detail what to choose in 2026 — directly, without tedious technicalities.
In short: what to choose in 2026
EcoSolaris recommendation: Always monocrystalline in 2026. Polycrystallines are almost eliminated from the market — the lower efficiency (16-18% vs 22%) no longer justifies the economics.
Detailed comparison
| Criterion | Monocrystalline | Polycrystalline |
|---|---|---|
| Efficiency | 19-23% | 14-18% |
| Color | Solid black | Spotted blue |
| Temperature performance | Hello | Lower |
| Long life | 25-30 years | 20-25 years |
| Area for 5 kWp | ~25 m² | ~32 m² |
| Price 2026 | Standard | Lower (-15-20%) |
| Availability 2026 | 95% of the market | <5% of the market |
Why monocrystalline wins
- More kWh per m² — essential when the roof is limited
- Better ROI — produce more with the same number of panels
- Superior performance in cold weather and low-light mornings/evenings
- More elegant aesthetic appearance (solid black) — important for residential areas
- Longer warranty (25-30 years vs 20-25)
Modern mono technologies in 2026
Not all monocrystalline panels are created equal. Here's what to look for:
- PERC — the current standard, efficiency 19-22%, good value for money
- TOPCon — the next generation, 22-23%, more stable at temperature (see TOPCon vs HJT vs PERC)
- HJT (Heterojunction) — premium, 22-24%, 30-year warranty
- N-type — silicon N (vs traditional P), lower degradation (0.4%/year vs 0.55%)
Brands recommended by EcoSolaris
- LONGi Solar Hi-MO 6 / X6 — world leader Tier 1, mono PERC/TOPCon 410-585W
- Canadian Solar HiKu / HiHero — Tier 1, mono N-type 545-595W
- Trina Solar Vertex N-type — TOPCon premium 415-700W, 30-year warranty
Conclusion: In 2026, always choose monocrystalline panels. For new systems we recommend N-type technologies (TOPCon/HJT). EcoSolaris Romania has all tier 1 variants in stock.
