Green Energy
Solar panel is one of the important elements in solar photovoltaic system. Choosing the correct solar panel is crucial factor. You need to determine the right wattage of a solar panel. The size of the solar panel in watts directly affect the cost which is basically priced in dollars per watt. Watts are related to the output of each module. For example, a 50 watt panel installed under ideal condition will generate 50 watt-hours of electricity each hour and a 100 watt panel will generate 100 watt-hours each hour in each day. So, you can expect to pay double the price for 100 watt panel compare to 50 watt panel.
There are three main stages in solar photovoltaic system. They are:
The cost of solar panel depends on the size (in watts), the physical size, quality of materials, warranty period, brand and certification of the solar panel. The price also depends on how many solar panels you are purchasing as part of full system package. In general, purchasing large amount of solar panels will cost less per unit. But, choosing solar panels based on only the price is not a wise decision. Because, it may not fit the area where you want to install, not having required certifications to qualify for government subsidies and lack of solid warranty period.
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- Estimation Of Solar Pv System Output
Factors Affecting Output Standard Test Conditions Solar modules produce DC electricity. The dc output of solar modules is rated by manufacturers under Standard Test Conditions (STC). These conditions are easily recreated in a factory, and allow for consistent...
Green Energy
How to choose a solar panel
There are three main stages in solar photovoltaic system. They are:
- Generating power by the solar panel.
- Storing power by the battery.
- Using the power.
The cost of solar panel depends on the size (in watts), the physical size, quality of materials, warranty period, brand and certification of the solar panel. The price also depends on how many solar panels you are purchasing as part of full system package. In general, purchasing large amount of solar panels will cost less per unit. But, choosing solar panels based on only the price is not a wise decision. Because, it may not fit the area where you want to install, not having required certifications to qualify for government subsidies and lack of solid warranty period.
Besides cost, it is important to consider the manufacturing process and materials used in the solar panel. Since all panel manufactures are not the same, therefore you should consider other factors before the decision of purchasing panels. They are:
- You need to consider the tolerance rate of solar panel. For example, you have purchased a panel mentioned 100 watts in the "nameplate". But, in reality it will be 95 watts only because of quality control issues. Therefore, a positive tolerance rate is crucial. That is, under standard condition, a panel of 100 watts will not only generates 100 watts, but also performs more effectively.
- There is a significant impact on temperature co efficient of solar panel. It is better having less percentage per degree Celsius. The price of solar panel with less percentage of temperature co efficiency is comparatively higher.
- Conversion efficiency of solar panel is also vital. It determines how much power is generated by solar panel during the conversion of light into electrical energy. For example, you have purchased two panels with same price. But, one has higher conversion efficiency than other, then it provides better value for money with correct efficiency.
- In certain climate condition, Potential Induced Degradation (PID) can be caused by stray currents triggered which is the reason for substantial power loss in the panel. Solar panel with little or no PID is considered as good.
- Embodied energy of the solar panel is another crucial factor. Here, panel's initial energy intensive production is compared with the time of pay back producing more energy.
- After installing solar panels, Light Induced Degradation (LID) may occur within few months which decreases the amount of power produced in the module. If there is little or no LID in the panel, then the panel is considered as good.
- Based on your installation application, the best type of solar cell will vary for you. There are three major types of solar cell remain. They are mono-crystalline, poly-crystalline (or multi-crystalline) and amorphous (or thin-film) silicon. High efficiency and good heat tolerance characteristics remain in mono-crystalline silicon. Due to recent development in poly-crystalline panel technology, it has been observed that panels with poly-crystalline silicon are equal to or better than many mono-crystalline in terms of heat tolerance, size and efficiency. Least amount of silicons are used in amorphous (or thin-film) silicon. Typically, thin-film contains least efficient solar cells. At present, some panel manufacturers are producing thin-film module with highest conversion efficiency.
- White House Solar Panels Only Produce Enough Energy To Watch 44 Minutes Of Tv Per Day
"A Bird Shit Upon My Solar Panels" Everyone say, "Jimmy Carter". From the Daily Surge: The Obama administration recently announced it had finished installing 44 kilowatt hours of solar panels on parts of the White House roof, just in time for the president...
- Now You Can Afford Solar Panels And Save 1000's On Your Electric Bill
If you want to buy solar panels chances are you are interested in both the environmental benefit they have, as well as the benefit they will have in saving you a lot of money on your electric bill.When you have enough of them, solar panels can make a...
- Roof Top System- Its Components
A Solar System generally comprises of the following elements: Solar Panel, a Charge Controller, a Power Inverter, a Monitor and Electrical Distribution System. As seen with each other technologies each component has different manufacturers , quality,...
- Why Is Solar Energy The Most Popular Source Of Energy?
The popularity of solar energy is at all-time high, not just in United States but the rest of the world too. Here are some of the most important reasons that explain this surge in solar energy popularity: Solar energy is the most abundant form of energy...
- Estimation Of Solar Pv System Output
Factors Affecting Output Standard Test Conditions Solar modules produce DC electricity. The dc output of solar modules is rated by manufacturers under Standard Test Conditions (STC). These conditions are easily recreated in a factory, and allow for consistent...