In China, the primary source of electricity is coal-generated power, which poses significant environmental pollution. As a result, the development of new energy sources has become a crucial aspect in recent years. Among these, photovoltaic power generation is one of the new energy options. Why is it said that solar photovoltaic power generation is a gem in the rough? What role does it play in achieving the "dual carbon" goals? Let's explore the advantages and disadvantages of solar photovoltaic panels.
Advantages of Solar Photovoltaic Power Generation
Energy Independence
If you have a solar system with energy storage, you can continue to generate electricity during emergencies. If you live in an area with unreliable grid power or frequently threatened by typhoons and other severe weather, such an energy storage system is highly necessary.
2. Save on Electricity Costs
Solar photovoltaic panels efficiently harness solar energy for electricity generation. Using them in homes can save a significant amount of electricity.
Sustainability
Petroleum is an unsustainable energy source as we consume it while using it. However, in comparison, solar energy is sustainable because the sun continuously replenishes energy and shines on Earth every day. We can utilize solar energy without worrying about depleting the Earth's natural resources for future generations.
Low maintenance costs
Solar photovoltaic panels have few complex electrical components, so they rarely experience malfunctions or require regular maintenance to maintain optimal performance.
Solar panels have a lifespan of 25 years, but many last even longer, so you'll rarely need to repair or replace your solar photovoltaic panels.
II. The Disadvantages of Solar Photovoltaic Power Generation
Low conversion efficiency
The basic unit of photovoltaic power generation is the solar cell module. The conversion efficiency of photovoltaic power generation refers to the ratio of light energy to electrical energy. Currently, the conversion efficiency of crystalline silicon photovoltaic cells ranges from 13% to 17%, while that of amorphous silicon photovoltaic cells is only 5% to 8%. Due to the low photoelectric conversion efficiency, the power density of photovoltaic power generation is low, making it difficult to form large-scale power generation systems. Therefore, the low conversion efficiency of solar cells is a bottleneck hindering the large-scale promotion of photovoltaic power generation.
2. Intermittent Work
On Earth's surface, photovoltaic power generation systems can only produce electricity during the day and not at night. Solar panels can generate electricity continuously, unless there are no differences between day and night in space, which does not align with people's electricity needs.
3. Greatly affected by climate and environmental factors
Solar photovoltaic power generation derives its energy directly from sunlight, and the solar radiation on the Earth's surface is greatly influenced by the climate. Rain, snow, clouds, fog, and even long-term changes in clouds can severely affect the power generation status of the system.
