Instalment of solar panels is a sure way to reduces your electricity expenses and lower down your dependency on a local grid to get a constant power supply. But choosing appropriate solar and its installation is certainly a difficult thing to do. I can tell it by experience, as I’ve gone through this overwhelming task very recently. I was really impressed by the concept of using eco-friendly solar energy instead of using traditional resources to get electricity. But installation of a perfect solar panel according to your house needs, demands a kind of a full research work.
You can choose solar system depending upon the area where you live or needs of your place, other than that there are several other specifications of solar systems that should be taken into account before purchase. You can also contact specialised solar system provider like Euro Solar to get information of which kind of solar panel suitable for your house. First, let’s discuss major types of solar systems.
Types of Solar Power Systems
Mainly there are four types of solar power systems available in the market. Depending upon your needs, weather conditions of your area, electrical power charges of your place, and your house needs, you can select any of these.
1. Grid-Tied Photovoltaic System
2. Grid-Tied with Battery Backup Solar Systems
3. Off Grid Solar Systems
4. Grid Assisted Solar System
1) Grid-Tied Photovoltaic System:
These are the most common type of solar systems. These are most popular system and ideal to save as much money as possible. Some of their basic characteristics are,
Grid-tied PV systems have the lowest cost.
These systems send converted electrical power energy to your grid, thus returning your home meter backwards. This way it gives highest TOI (Turn on Investment).
Drawback : If power from your main grid shut down, then these systems will not be able to give you backup electrical supply, as they are connected to grid.
2) Grid-tied with Battery Backup Systems:
According to the house needs, these solar systems are most appropriate to install. As these systems are connected with batteries, so if you are living in areas where power outages are common. Then installation of this solar systems is the answer to your problems. These solar systems are independent of grids, so you’ll get a consistent supply of electrical power energy in your home.
3) Off-Grid Systems:
These solar systems are most expensive, yet completely independent. Installation of these solar systems is best for those areas where grid power supply is insanely expensive, or where there is no grid supply at all. These systems are self-sufficient, but you have to pay for the cost of batteries.
4) Grid-Assisted Solar Systems:
These are the best solar systems, as per the characteristics of solar panels. The system fully runs on batteries. And these batteries are charged through sun’s heat energy. The best feature of this system is that, if the batteries ran out of charging or in case no heat energy at night, the system automatically connect itself to the grid and give a constant supply of power. This system is best to use in areas where electricity charges are very high during the daytime.
Other Important Specification of Solar Panel
One of the main thing that everyone is concerned about while choosing solar panel is cost. Well, this is not the only point to ponder, as there are many other factors, such as PID (Potential-Induced Degradation) Resistance, Temperature coefficient of solar panel, Conversion efficiency, LID (Light-Induced Degradation), warranty size, dimensions, durability and so on. It is necessary for you to give an attentive look at these factors before buying. Otherwise, if you choose only because one company is providing cheaper products than the other, then it will cost you much more in the long run.
Power Generation as per Size of Panels:
Solar panels are formed by joining the small photovoltaic cells together that convert heat energy of sun rays into power energy/ electricity. This heat energy causes the electrons of photovoltaic cells to emit electrons, and this continuous escape of electrons run through the system in the form of current. So the rate of consumption of this heat energy to produce an appropriate amount of current is the most important factor of a solar panel. Prices of the solar panels are ranged as dollars per watt. You’ll see solar panels according to their ability to generate electricity in watts. Such as there are 100W, 200W, 300W, 400W,500W, and 1KW solar panels. It means that 200W solar panel will generate 200watt power each hour, and 400W module will generate double power in one hour. Similarly, the cost will also be doubled.
More the output energy of solar panel is, bigger will be its size. Meaning the size of 400W solar panel will be bigger than 200W solar panel.
Potential-Induced Degradation (PID) Resistance:
PID resistance is the phenomenon of reduced performance in photovoltaic cells caused due to tripped current streak. Approximately 30% of power loss can occur due to PID resistance. So look in a specification, a good solar cell will ideally have no PID display.
Temperature Coefficient of Photovoltaic cell:
Temperature coefficient determines the effect of higher temperature on a solar panel. The lower the value of this coefficient appears after installation, and the better is the quality of that solar panel. The module that has a lower percentage of temperature coefficient will definitely cost you more, because of higher quality.
Light Induced Degradation (LID) Resistance:
LID resistance refers to the process that reduces the performance of solar panels in first months of its installation. With the passage of time, LID resistance vanishes completely. But as it affects the performance of solar module, so a better quality solar panel will have zero or little LID resistance.
Power Tolerance of Solar Panel:
Power tolerance of module is another parameter to judge the quality of any solar panel. During the conversion of heat energy into electrical power, several energy losses are recorded. The best photovoltaic cell will have more power tolerance and lesser energy loss, which is called positive tolerance. For example, if the solar panel is of 200W power than it should either equalise or exceed this limit. This parameter is one of the steps of manufacturing process. After manufacture, these photovoltaic cells are tested and ranked as per various features, such as electric power output ability, and positive tolerance.
Performance Guarantee of Solar Panel:
The durability of any product you purchase is critical to know, especially when you are spending impressive amount to get it. Many trustworthy solar panel dealers gave warranty of approximately 25 years, which means that solar panels will give 90% power generation guaranteed for the first ten years of installation, while 80% electrical power output for next 25 years. Above all, it is vital to select a well known and reputable brand, whether you have to compromise on the cost. Because this performance guarantee is only valid for the running companies, and if the company got shut down then you can’t claim your warranty anywhere. So be wise in selecting the manufacturer.
So, depending on the place you live, type of electronic devices you constantly need, prices of electricity in your area, and all above mentioned details, you must choose a solar system from a well-reputed company.