Want to join the ranks of innovators who use green energy? Tired of paying for electricity? Then it’s time to master the technology of generating electricity with solar panels!
What are solar panels ?
Solar panels convert solar energy into electricity. This simple, at first glance, the algorithm is made possible by an important mineral – silicon. Silicon is one of the most common land elements, which means that its extraction and reserves have a very beneficial effect on the cost of solar panels. The main advantage of solar energy is ecological purity. Absence of any harmful emissions, radiation, waste. This source is extremely reliable. However, there is a downside – a volatile nature. Cloudy weather greatly reduces the possibility of generation, so often the solar system works in parallel with traditional sources of electricity.
What batteries are there? monocrystalline, polycrystalline, or thin film
Comparative characteristics of solar panels. If you choose batteries based solely on appearance, what to look for?
Appearance of photocells
Monocrystalline batteries have a uniform color, which is evidence that the original crystal consists of a single grain. Another external feature – rounded corners. Polycrystalline elements have a square shape, inhomogeneous structure, which is due to different sizes and shapes of crystals, as well as the presence of impurities. Thin-film versions of solar panels consist of thin layers of silicon. Silicon is sprayed on foil or glass under a vacuum. Such batteries may differ in the materials of the layers formed from cadmium telluride, amorphous silicon, organic substances, as well as indium, selenide, or gallium.
Solar energy conversion efficiency
This difference is key.
Monocrystalline elements have the highest efficiency, which is at 23%. This figure is achieved due to the high degree of purification of silicon. Polycrystalline counterparts can boast only 18% efficiency. A significant reduction occurs due to secondary raw materials used in the production of polycrystals. Impurities of carbon, oxygen, and other elements reduce the working area of the battery.
Thin-film models show an efficiency of 13%. Restrictions are related to the physical size of the panels.
The cost of solar panels.
As you may have guessed, the cost of single-crystal cells is higher than other batteries per unit of power. Initially, the high cost of single crystals is associated with the complexity of the technological purification of silicon. The difference in comparison with polycrystalline batteries is 15-20%, and with thin-film – 35%.
WHAT TO CHOOSE?
• High performance, achieved due to the high degree of purification of silicon.
• The performance of single-crystal solar panels is 18 – 23%.
• Compactness. High performance allows you to use a smaller area set aside for batteries. In this case, single-crystal panels will produce more electricity than other elements.
• Long service life. Manufacturers of such sources guarantee that their products will last at least 25 years.
• High cost. These elements are significantly more expensive than other batteries, so building a system with their participation requires large capital investments.
• Reasonable cost. Less expensive method of production of polycrystalline solar panels, makes their cost much more attractive on the world market.
• Productivity. This parameter leaves much to be desired, as the degree of processing of solar energy in this case rarely exceeds 14-18%. The low purity of silicon is to blame for everything.
• The need to use more space. To achieve the calculated capacity will have to install more batteries than when using single-crystal panels.
• Sensitivity to high temperatures. Many impurities in the polycrystal have a temperature threshold at which they begin to undergo certain chemical reactions. Naturally, this feature affects the battery life.
THIN FILM BATTERIES
• Low cost of production in relation to modules from mono-, and polycrystals. Low cost – low cost for the end-user.
• Pleasant aesthetics, formed by the uniformity of silicon deposition.
• Resistance to heat. At high temperatures, film batteries retain their original performance, so they can be called stable and versatile – suitable for different climates.
• Require more space to install
• Coverage area. More batteries need to be installed to reach the planned capacity of the power plant. • Additional costs. It is important to note that the maintenance of a power plant of thin-film elements is not only the cost of their acquisition, but also the costs associated with the purchase of supporting structures, cable and other consumables.
• Short service life.
Yes, it may seem that the choice is quite difficult, but do not worry about it. To determine its fidelity, you just need to contact our consultant and share your project. It is necessary to specify: the purpose of installation, estimated capacity, conditions in which the power plant will be located. After that, we will be able to give you the most rational advice on the choice. Ecological energy is your personal contribution to your own well-being and the health of all mankind!
Another article on this blog that might interests you: