1. Storage of electrical energy: Photovoltaic panels can only function normally under sufficient sunlight, but in reality, there may be cloudy days or other periods when they cannot function properly. Therefore, it is necessary to store the electricity generated by photovoltaic panels in battery packs or other energy storage devices for future use.

2. Used for household appliances: Output electrical energy stored in battery packs to household appliances such as lighting, televisions, refrigerators, computers, etc. It should be noted that the electricity generated by photovoltaic panels is not stable and requires appropriate adjustments.

3. Commercial use: Photovoltaic panels can be applied in various commercial occasions, such as agricultural irrigation, communication equipment power supply, urban lighting, etc.

4. Transportation: Photovoltaic panels can also be applied to various transportation vehicles, such as electric cars, airplanes, trains, ships, etc. These tools need to be moved freely, so energy supply needs to be fully considered.

5. Recycling: The lifespan of photovoltaic panels is generally longer, but after a certain period of use, their performance may decrease. Waste photovoltaic panels can be reused through recycling to reduce environmental pollution.

In summary, photovoltaic panels have broad application prospects and will play an increasingly important role in future energy supply.