How do I evaluate whether I need a poly module or a mono module?
There are various solar cells in the market. These cells are made of different PV modules with different structures. However, few people know which module is the right fit for them. The modules are –
The monocrystalline solar module consists of many small solar cells, each made from a single silicon wafer, so it looks smooth and uniform. These solar cells use pure silicon and involve a complex crystal growth process that is made into individual cells that are wired together in the solar panel.
Polycrystalline PV modules contain silicon that converts sunlight into electricity. Panels made of polycrystalline cells tend to be slightly cheaper and less efficient than single crystals because the cells grow in large blocks from many crystals rather than individually.
Before purchasing a solar PV module, you need to consider the following factors:
Monocrystalline solar panels are relatively expensive compared to polycrystalline solar panels. The polycrystalline panel comes with a unique structural frame, which makes it cheaper and easier to assemble. The average price per watch for polycrystalline panels is around 22 rupees, while that for single crystal panels is 24 rupees. You should determine your budget to make the right choice for you.
- Large- or small-scale use
Monocrystalline solar panels are popular in solar rooftop systems and are commonly used in large industrial, commercial, or residential equipment. Polycrystalline solar panels are available in a wide range of wattages and can be used in both small and large installations.
Monocrystalline solar panels can be used on a small scale (40W) to power lamps, microwave ovens, and refrigerators, and can also be integrated into a solar panel system to power the entire house. The polycrystalline module is used in large solar farms and harnesses the power of the sun to power the surrounding area. These are used in self-powered devices such as remote traffic lights and homes without power grids.
- Space Requirements
If the available space on the roof is limited, consider Monocrystalline solar panels. You can also maximize performance within space constraints to accommodate PV arrays. On the other hand, if you have enough free space on the roof, you can consider polycrystalline solar panels. Monocrystalline solar modules require minimal space compared to their counterparts. Polycrystalline solar modules are less space-efficient and require more surface area and more space.
Monocrystalline solar modules are generally black in color. Polycrystalline solar modules have a surface that looks like a mosaic. These solar panels are composed of multiple silicon crystals, so they are square in shape and bright blue in hue. Many users prefer monocrystalline solar panels because they feel more uniform and eye-friendly.
- Life Span of Solar Panels –
The minimum life of a single crystal is 25 years, but it can exceed 50 years. They usually last significantly longer than the warranty period, making them worth a long-term investment. These lifetime parameters do not make a big difference to polycrystalline solar panels, but the warranty period offered by the manufacturer may vary.
- Efficiency Rate –
With mono modules, the cell is made up of single crystals, giving you more freedom of movement to improve current flow. Therefore, it is more efficient. While in the polycrystalline module, the electrons in each cell have less room to move. Therefore, the efficiency of polycrystalline solar modules is relatively low. The efficiency of single crystal solar panels ranges from 17% to 22%, and the efficiency of polycrystalline solar panels is estimated to be about 13-16%.
- Climate and weather conditions –
Hot and cold weather
A common misconception is that solar panels work well at high temperatures. But as the temperature rises, efficiency decreases. On sunny days, single crystal solar panels perform better than polycrystalline panels due to their low-temperature coefficient. In cold weather, low temperatures do not adversely affect panel performance unless the panel is covered with snow.
Clouds and fog
Clouds block sunlight and prevent it from hitting the solar panels. This reduces efficiency regardless of whether the module is a single crystal or polycrystalline.
Rain and hailstorms
Hail occurs most often within mid-latitudes and is less common in the tropics. Today’s solar modules are extremely resistant to heavy rain. The aluminum and glass that connect the solar cells are extremely waterproof.
The monocrystalline solar panel system can fail if the panel is slightly covered with snow or dust. Polycrystalline solar modules, on the other hand, are somewhat tolerant under these conditions. Single-crystal solar panels usually perform better in high-temperature environments. It has higher heat resistance than a polycrystalline substrate.
Monocrystalline solar panels have proven to be the best type of solar panel available in the market. These are considered premium solar products. The panels are reasonably expensive, but they offer excellent cost-effective performance in almost all temperature conditions. Your home deserves the best that solar technology has to offer today at an affordable price. You can achieve this if you are willing to consider the unique features, suitability, and pros and cons of the various solar panel options available to you.