Maximizing Yield on Complex Industrial Roofs: A PVsyst Simulation Case Study
February 9, 2026
Explore how Lion Solar Solutions optimizes complex multi-orientation solar projects using advanced PVsyst simulation and detailed shading analysis. A deep dive into the 712 kWp Mitterfischen project.
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Engineering Beyond the Standard
Industrial solar projects are rarely simple. Real-world roofs feature chimneys, HVAC units, and varying angles. The key to a successful investment lies not just in the hardware, but in the precision of the PVsyst simulation.
In this case study, we analyze the Andechser Project in Mitterfischen, Germany. This 712 kWp system presented a unique engineering challenge: a complex roof requiring 7 different orientations. Through expert engineering and rigorous analysis, Lion Solar Solutions demonstrates how to achieve a high Performance Ratio (PR) of 84.74% even under challenging conditions.
Project Fact Sheet
- Project Name: Andechser Project
- Location: Mitterfischen, Germany (Lat: 47.94°N)
- System Power: 712 kWp (DC) / 690 kWac (AC) +1
- PV Modules: 1,619 units of Solar Fabrik Trend Black 440W +3
- Inverters: Huawei SUN2000 Series (Mixed configuration: 100KTL, 30KTL, 150K, etc.) +2
- Specific Production: 966 kWh/kWp/year
- Performance Ratio (PR): 84.74%
The Challenge: Mastering 7 Orientations with Shading Analysis
The defining characteristic of this project is the roof topology. The array is split into 7 distinct orientations ranging from azimuths of -67.4° to 112.6° and -157.4°.
The Engineering Solution: To mitigate mismatch losses caused by these varying angles, we utilized the multi-MPPT capabilities of Huawei inverters. By carefully grouping strings, the Module Array Mismatch Loss was kept to a minimal 2.0% at MPP.
Furthermore, a detailed shading analysis was crucial. Using the 3D scene construction in PVsyst, we modeled the surrounding obstacles. Despite the complex environment, the Near Shading loss was optimized to just -2.64%, ensuring the system remains efficient throughout the year.
Anatomy of Losses: Transparency in Engineering
At Lion Solar Solutions, we believe in transparent data. The Loss Diagram is the heartbeat of any PVsyst simulation. For the Mitterfischen project, the efficiency flow is clear:
- Global Incident Irradiation: 1050 kWh/m².
- Soiling Losses: Calculated conservatively at -2.0%.
- IAM Factor (Reflection): Only -0.96% loss due to panel glass reflection.
- Thermal Losses: -2.62% due to operating temperature.
This granular level of detail allows us to pinpoint exactly where energy is lost and how to recover it, resulting in a highly efficient system delivering 687,896 kWh/year.
Financial Security: Delivering Bankable Reports
For investors, the most critical metric is reliability. This is where Bankable Reports come into play. We don’t just guess; we calculate probabilities.
- P50 (Expected Average): 687.9 MWh/year.
- P90 (Conservative Case): 643.3 MWh/year.
By providing a P90 value, we offer a “safety net” calculation. This statistical approach allows banks and investors to assess risk accurately, making the project financially viable and secure. The low variability of the climate data (5.1%) further strengthens the reliability of this report.
Why Choose Lion Solar Solutions?
The Andechser Project proves that complex roofs are not a barrier to high performance. With precise shading analysis, top-tier hardware selection (Solar Fabrik & Huawei), and Bankable Reports, we turn challenging layouts into profitable assets.
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