Advantages of the On-Grid solar cell

Solar cells are an invention that can convert solar energy, which is natural energy, into electrical energy for us to use beneficially. It also helps us save more on electricity costs. But even so Solar cells are still divided into 3 systems: off grid solar cells (Off Grid) and hybrid solar cells. (HybridSystem) and on-grid solar cell system (On-Grid)

The solar cells that we see in houses or buildings are mostly on-grid solar cells. Therefore, it may make many people wonder. Why do people choose this system to use? To relieve such doubts, today Thai Watsadu has brought the advantages and working principles of on-grid solar cell systems to you.

On-grid solar cell system What is the working principle?

An on-grid solar cell system is a system that uses both sunlight energy and electrical energy from electricity together. To help you have electrical energy to use all the time. During the daytime the system uses energy from the sun. But if it's during the night Or during the day when there is no sunshine, like when the sky is overcast and the rain is about to fall. The system will switch to pulling electrical energy from the electricity supply to use instead. This on-grid solar cell system is usually suitable for installation in homes, offices, and industrial plants. or places where many electrical appliances are used and frequently used during the daytime

An on-grid solar cell system has important equipment that is indispensable: solar panels, inverters, breakers, electricity meters, MDB cabinets, direct current and alternating current cables. Each device must be carefully calculated for the number and duration of use of all home electrical appliances. Because it will help us know how many solar panels are needed. How many watts is the inverter, cable, breaker, etc. to support the electricity that will be used?

If we briefly get to know the solar cell system on-grid, let's get to know more deeply about the working principles of the on-grid system. How will electricity be converted for use?

1. Solar panels receive energy from sunlight and use it to create direct current electricity.
2. When we receive direct electricity from the solar panels Electrical current is delivered through a DC cable, which is a cable that allows direct current to flow into the inverter.
3. An inverter that receives direct current converts it into alternating current.
4. The alternating current that is changed from the inverter is passed on to the AC power cord, which is the transmission wire for alternating current to various electrical appliances in the home.

Pros and cons of solar cells and on-grid systems

Pros of solar cells and on-grid systems

• Can sell electricity back to the electricity authority. If the power produced exceeds the demand for use In this case, it is necessary for the electricity authority to register and enter into a contract. To request the installation of a COD system that is a system for supplying electricity into a commercial system.
• Helps save more on electricity costs.
• There are no complicated installation equipment and fewer pieces than off-grid systems. resulting in low maintenance costs
• No need for batteries that need to be replaced frequently if used a lot.

Cons of solar cells and on-grid systems

• Energy reserves cannot be used during the night or when there is no sunlight. Because there is no battery to store electricity. causing the need to switch to using electrical energy from the electricity supply instead
• There is a lot of documentation required and it takes some time to apply to various agencies.
• Additional contract costs may apply to resell power.

Things to know if you are interested in installing an on-grid solar cell system

As known above that the on-grid solar cell system has electrical energy from the electricity source to use as well Therefore, it is necessary to request permission from all 3 relevant agencies as follows:

• Local government agencies such as municipalities, sub-district administrative organizations in the area where you live. To request permission to modify the structure on the roof to install solar panels.
  
• Office of the Energy Regulatory Commission To notify energy business operations that are exempt from applying for a license. You can submit documents specified by the government through the website.
• Provincial Electricity Authority Metropolitan Electricity Authority You should register to join the project to sell electricity back or request electricity supply. By attaching documents as specified by the agency via the website. Once everything has been approved, the electricity authority will ask you to pay for various services and enter into a contract regarding the purchase and sale of electricity. Before entering to check for completeness To install a solar cell calculator meter Including connecting to the COD system, which is a system for supplying electricity into the commercial system to start selling electricity.

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