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Tips on How to Choose Solar Panels
Solar panels are produced by many manufacturers in different styles and features. Homeowners and business owners often find it difficult to choose the right solar panel that provides maximum benefits. It is a big investment which tends to be “permanent” once installed. You do not want to invest a lot of money for something you will regret later. Therefore, it is important that you know the guidelines/tips to choose solar panel.
- Solar panel capacity. The capacity is usually measured in watts. You should first determine your electricity need before buying a panel. The output of a panel will determine the watts of electricity produced and physical size of panel. The more capacity you require, the higher the price will be and the more space you will need. As a general rule, a 100-watt panel will generate the same amount of electricity per hour under normal condition. In long term, you would better buy a solar panel that meets your electricity needs and fits your free space, even though the initial cost is higher.
- Solar panel efficiency. If a panel is said to have a capacity of 100 watts, then it should produce 100 watts of electricity to be 100 percent efficient. You should check the efficiency rate before buying. The higher it is, the more it costs. Most solar panels have efficiency rate from 10 – 20%.
- Solar panel material. As we know, there are three materials of solar panel: mono-crystalline modules, poly-crystalline modules, and the thin-film modules. The first two are usually more suitable at lower temperatures, while the thin-film (or also known as amorphous) is more effective at higher temperatures. But there are also things to consider in regards to solar panel material: safety, weight, strength, and coating materials. Solar panel should be made of safe materials which are light but strong to last for years. Even the coating material should be safe enough for direct contact with sun light. When buying solar panel, look for manufacturer’s guarantee of at least 10 years. In case they are broken before the due year you do not have to spend money anymore.