当然是推荐500w。

光伏组件是一种在阳光照射下产生直流电的发电装置。它由几乎完全由半导体材料（如硅）制成的薄固体光伏电池组成。由于没有运动部件，因此可以长时间运行而不会造成任何磨损。简单的光伏电池可以为手表和计算机供电，而更复杂的光伏系统可以照亮家庭并为电网供电。光伏面板组件可以制成不同的形状，并且可以将组件连接起来以产生更多的电能。光伏板组件用于屋顶和建筑表面，甚至用作窗户、天窗或遮阳装置的一部分。这些光伏装置通常被称为附楼光伏系统。

单晶硅太阳能电池的光电转换效率在15%左右，最高可达24%，是目前所有类型太阳能电池中光电转换效率最高的，但生产成本高昂广泛和普遍地大量使用。由于单晶硅一般采用钢化玻璃和防水树脂封装，坚固耐用，使用寿命一般可达15年，可达25年。多晶硅太阳能电池的生产过程与单晶硅太阳能电池类似，但多晶硅太阳能电池的光电转换效率要低得多，光电转换效率约为12%列为世界上效率最高的多晶硅太阳能电池的14.8%）。

从生产成本上看，它比单晶硅太阳能电池便宜，材料制造简单，省电，总生产成本低，因此得到了很大的发展。此外，多晶硅太阳能电池的使用寿命也比单晶硅太阳能电池短。在性价比方面，单晶硅太阳能电池略胜一筹。

欢迎致电凌渡智云官方详细了解光伏电站解决方案。

Photovoltaic panel module is a power generation device that generates direct current under sunlight. It consists of thin solid-state photovoltaic cells made almost entirely of semiconductor materials, such as silicon. Since there are no moving parts, it can be operated for a long time without any wear. Simple photovoltaic cells can power watches and computers, while more complex photovoltaic systems can illuminate homes and power the grid. PV panel modules can be made into different shapes, and modules can be connected to generate more electricity. PV panel modules are used on roofs and building surfaces, and even as part of windows, skylights, or sunshades. These PV devices are often referred to as annex PV systems. The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 15%, up to 24%, which is the highest among all types of solar cells at present, but the production cost is high and widely used. Because monocrystalline silicon is generally packaged with tempered glass and waterproof resin, it is firm and durable, and its service life can generally reach 15 years and 25 years. The production process of polycrystalline silicon solar cells is similar to that of monocrystalline silicon solar cells, but the photoelectric conversion efficiency of polycrystalline silicon solar cells is much lower. The photoelectric conversion efficiency is about 12% (sharp, Japan, july1,2004), which ranks as 14.8% of the most efficient polycrystalline silicon solar cells in the world). In terms of production cost, it is cheaper than monocrystalline silicon solar cells, with simple material manufacturing, power saving and low total production cost. Therefore, it has been greatly developed. In addition, the service life of polysilicon solar cells is shorter than that of monocrystalline silicon solar cells. In terms of cost performance, monocrystalline silicon solar cells are slightly better.