Rooftop solar power, a potential source you need to use

 Solar power is known as a clean and never-ending source of energy. In that field, rooftop solar power has been given attention by many developing countries in order to make the most of the "idle" roof area to bring efficiency.

I. Learn about rooftop solar power - a better solution for saving energy

A rooftop solar power is a system of solar panels installed on the roof of a building, commercial, industrial or residential. These solar PV systems are typically much smaller in capacity than terrestrial solar power plants. Rooftop systems on residential buildings typically range in capacity from 5-20KW, while systems on commercial buildings typically reach 100KW or larger.

About the working mechanism, the DC current (Direct Current) generated by sunlight shining on the tons of batteries runs into the inverter to turn into AC (Alternating Current)  and then runs into the two-way meter to be recorded and stored for payment, then run into the electricity-using equipment of the household.

In case the consumer does not use up all the electricity from the solar panel, the excess electricity will be transferred to the regional distribution grid. On the contrary, if there is a shortage of electricity or when there is no sunlight, the consumer must receive more from the grid. The process of generating electricity into the grid, or vice versa, is recorded at the two-way meter.

​​The advantages and disadvantages of rooftop solar power

Compared with ground-based systems, rooftop solar power systems have a number of important advantages including: 

Increased power independence, no land use, the only connection to the grid system distribution of the electricity industry without having to build more high-voltage grids of 110 kV or more, without affecting the reliability of the power system and without having to increase backup source for the power system, and can easily mobilize investment capital from many different subjects. In addition, rooftop solar power is really meaningful in terms of reducing grid losses, increasing power supply, and contributing to saving energy in general.

The biggest disadvantage of using rooftop solar is that the electricity industry has a decrease in revenue. However, depending on the basis of national interests, it will contribute to ensuring energy security, protecting the environment and not affecting the production process.

Rooftop solar installation for homeowners and entrepreneurs

The rooftop solar power system is to take advantage of the space of the terrace, roof and high areas with lots of sunlight, to make a place to install solar panels. This is a great solution to turn the house into a solar-powered generating station. It not only provides domestic electricity for the homeowners but is also an environmentally-friendly source.

The rooftop solar power system brings many practical applications to life. The process of installing and moving the system is very easy with very reasonable initial installation costs.

II. Some rooftop solar power models bring the best efficiency

The use of rooftop solar power has significantly contributed to saving living costs. If you install rooftop solar power in your home, you will generate your own independent electricity. This power source will help save costs for the family. Moreover, rooftop solar power is also a clean source of electricity and contributes to environmental protection. 

1. The Off-grid solar power system

Off-grid solar power systems will absorb solar energy. Thanks to the solar cell, the light energy is converted into electricity. The amount of electricity that the system produces will be stored in the battery. When you need to use electricity, you will get it through the battery.

The Off-grid solar power system should be installed:

• Area where is no national grid electricity

• The rugged terrain makes it difficult or too expensive to install the national grid

Advantages of the off-grid solar power system:

• Electricity can be used without the national grid

• Not dependent on the state's power cut schedule

• Can be installed anywhere

2. On-grid solar power system

On-grid solar power system (or known as grid connected PV system) is that solar panels or roof tiles in the system will absorb solar energy. This energy is then converted into electricity. The power source at this time is DC power. Through the power adapter, DC power will be converted into AC power. This AC power source has the same phase and the same frequency as the national electricity. Electricity will be supplied to the load. When you need electricity, you get power through the load. If your electricity demand is lower than the electricity produced, the excess electricity will be fed into the national grid.

Where to install on-grid solar power system: Places that consume large amounts of electricity

Advantages of the grid connected PV system:

• Simple structure, easy to install

• High strength, long service life

• Help reduce the load on the national grid

Read more: Overview of metallization: Definition, classification, advantages

3. Hybrid Combined rooftop solar power model, both storage and grid connection

This is an integrated model of the two models above. The amount of solar electricity after being collected by the battery will be charged to the battery. When the battery is full, the residual electricity that is still DC will be converted to AC. AC power is transferred to the load.

Where to install Hybrid Combined rooftop solar power model: Places that consume large amounts of electricity such as factories, hospitals, etc.

In conclusion, rooftop solar power is a potential source and better solution for saving energy and everyone needs to install it for your home.

Read more: Solar installation: how it works and Solar Panel Installation Process