Installing a solar energy system is one of the smartest investments for homeowners. Solar panels are an element of the solar energy system. However, not all solar panels are created equal. Here, we have provided five things to consider when selecting the best solar panels for your home.
Solar Panel Statistics
Every solar panel has operating temperature coefficients, standard measurements for output, and efficiency. You need to compare solar panels in these aspects to select the best for your location.
The nameplate rating of solar panel refers to its maximum power generating capacity. It is measured in the amount of DC (direct current). Solar panels are rated between 200 and 400, depending on the quality and size of each panel. The nameplate rating is not the final word in power generation—factors such as atmospheric conditions, sun exposure, tree cover, temperature, and angle of the roof also matter.
According to solar panel experts, panels can vary 5% above or below their nameplate rating.
The efficiency rating of the solar panel tells you how efficiently they convert sun energy into electricity. The efficiency rating of solar panels is given in kilowatt-hours (kWh). If you look at solar panels, most will have an efficiency rating between 14% and 20%. Don’t get disheartened by low-efficiency ratings. In any photovoltaic system, 80% of the energy produced is lost in form of dissipated heat. Even a 20% efficiency rating is good for solar panels.
Solar Panel Quality
Solar panels are expensive, so the more durable they are, the better. You need to look at the quality indicators while selecting solar panels. For example, you need to look for solar panels that meet IEC 61215 standard, which is the reliability standard established by the International Electrotechnical Commission. The panels are generally categorized into three groups- economy, standard, and premium. The premium category solar panels are the most expensive and also of the highest quality standard.
Warranties & Assurances
Solar panels are long-term investments. Manufacturer warranties and assurances work to protect your investment. Solar panels are installed outside your home where they have to face different climatic conditions. They degrade over time and their efficiency is affected. Manufacturer warranties ensure the power production of solar panels does not fall below a certain threshold over twenty-five years. Besides, manufacturers also provide a material warranty in case a panel fails.
Selecting the best solar panels for your home is not rocket science. Pay attention to the factors above and you will get panels that offer good value for your money.