Efficiency Indicators: The conversion efficiency of photovoltaic modules is a key parameter. Currently, mainstream monocrystalline silicon modules achieve efficiencies of over 20%, while polycrystalline silicon modules achieve approximately 15%-18%.

Certification Standards: High-quality systems must pass international certifications such as CE and IEC to ensure safety and reliability.

After-Sales Maintenance: Choosing suppliers that offer long-term warranties (such as a 10-year module warranty and a 5-year inverter warranty) and rapid response services reduces later maintenance costs.

Installation Environment: System design must consider local sunlight conditions, roof orientation, and tilt angle to maximize power generation efficiency. For example, in areas with an average annual sunshine duration exceeding 1500 hours, the economic benefits of solar power generation systems are more significant.