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Photovoltaic panels (solar panels) rely on the photovoltaic effect to directly convert sunlight into electrical energy and are the core equipment of photovoltaic power generation systems.

Working Principle: Sunlight illuminates the semiconductor cells inside the panel, generating a directional current that outputs direct current (DC). This DC power is then converted into usable alternating current (AC) by an inverter.

III. Mainstream Categories:

1. Monocrystalline Silicon: High conversion efficiency, excellent power generation performance, and long lifespan; currently the mainstream product.

2. Polycrystalline Silicon: High cost-effectiveness, slightly lower efficiency than monocrystalline silicon, suitable for low-cost projects.

3. Thin-film Photovoltaics: Lightweight, thin, and flexible; often used in portable devices and architectural decoration.

IV. Core Parameters:

* Peak Power: Commonly 450–600W, determining power generation capacity.

* Conversion Efficiency: Mainstream modules 20%–24%.

* Lifespan: Standard warranty of 25 years or more.

* Power generation efficiency decreases slightly with higher temperatures.

V. Advantages and Disadvantages:

✅ Advantages: Clean energy, zero pollution and noise, flexible installation, simple operation and maintenance, long-term benefits.

VI. Application Scenarios: Residential rooftops, industrial and commercial plants, large-scale ground-mounted power stations, photovoltaic buildings, outdoor off-grid power supply, etc.