Solar Technology Comparator
PERC, TOPCon, HJT • Inverters • Batteries — 2025-2026 Data
📊 Dataset v2026-03
Interactive comparisons and real-time calculations based on 2025-2026 public data
Photovoltaic Cell Comparator
PERC vs TOPCon vs HJT
900
1900
3
100
| Criteria | PERC | TOPCon | HJT |
|---|---|---|---|
| Cell Efficiency | 22-23% | 24-25.5% | 25-26.5% |
| Module Cost (€/Wp) | 0.08-0.10 | 0.09-0.11 | 0.12-0.15 |
| Market Share 2025 | ~35% (declining) | ~49% | ~10% |
| Temp. Coeff. | -0.35%/°C | -0.30%/°C | -0.25%/°C |
| Degradation/Year | 0.55% | 0.40% | 0.35% |
| Bifaciality | Limited | Good (10-20%) | Excellent (15-25%) |
| LID/LeTID | Susceptible | Low | Very Low |
| Warranty Period | 25 years | 30 years | 30 years |
| Best Use Case | Tight budget Standard residential |
Best value for money |
Hot roofs Premium |
Annual Production PERC
—
kWh/year (estimate)
TOPCon Gain vs PERC
—
kWh/year (+%)
HJT Gain vs PERC
—
kWh/year (+%)
💡
Personalized Recommendation
Adjust the parameters to see the recommendation.
Inverter Comparator
String vs Microinverters vs Hybrid
| Criteria | String | Microinverter | Hybrid |
|---|---|---|---|
| Cost (€/kW) | 35-44 | 150-300 €/unit | 86-97 |
| Efficiency | 97-98% | 95-97% | 96-97.5% |
| Monitoring | Central | Per panel | Central + battery |
| Partial Shading | Susceptible | Tolerant | Susceptible |
| Expansion | Difficult | Easy | Easy |
| Lifespan | 10-15 years | 20-25 years | 10-15 years |
| Best Use Case | No shading Large roof |
Shading Complex roof |
With battery Storage |
ℹ️ Practical Tips
- ✓ String: Optimal for small roofs without shading, limited budget
- ✓ Microinverters: Ideal for complex roofs, partial shading, or future expansions
- ✓ Hybrid: Essential for systems with battery storage (self-consumption)
Residential Battery Comparator
LFP Technologies 2025-2026
| Model | Capacity | Installed Cost | Chemistry | Cycles | Warranty |
|---|---|---|---|---|---|
| Tesla Powerwall 3 | 13.5 kWh | ~1200 €/kWh | LFP | 10000+ | 10 years |
| BYD HVS/HVM | 5-22 kWh | ~700 €/kWh | LFP | 8000 | 10 years |
| Huawei LUNA | 5-30 kWh | ~750 €/kWh | LFP | 6000 | 10 years |
| Enphase IQ 5P | 5-60 kWh | ~900 €/kWh | LFP | 7000 | 15 years |
Battery ROI Calculator
5
30
600
1200
500
3000
0.15
0.40
Total Battery Cost
—
euros inc. (estimate)
Annual Savings
—
euros/year
Battery Payback
—
years
Data Sources
Reference Data
- 🔬 Fraunhofer ISE 2025 — PV cell and module efficiencies
- 📊 IRENA — Global solar costs and markets
- 💹 BNEF — Component prices and forecasts
- ⚡ PV Tech — Photovoltaic technology benchmarks
- 🌍 Clean Energy Reviews — Independent analysis
- 🇪🇺 European Solar Trade Body — European market data
Methodology
- ✓ Data updated regularly (v2026-03)
- ✓ Calculations based on standard European conditions
- ✓ Production formulas: G × P × Eff × (1 - Degr)
- ✓ Assumptions visible in hypotheses.html
- ✓ All calculations real-time (no approximation)
- ✓ Comparisons based on verifiable public data
⚠️ Disclaimer
These comparisons are indicative. Actual costs vary by region, supplier, installation, and site conditions. For personalized analysis, consult a certified installer.