Currently, Systech Eco Company received a lot of calls through counseling solar system. The question is most interested customer: "The installed capacity of solar power system how much is enough for the needs of my family use; solar power system grid and how to ensure objective no electricity standard; installation costs for solar power systems can cost much for 1 KWP "
Systech eco Technical Department, said:
System Grid solar power system solar power conversion from solar panels into electricity hoists DC. This is a direct transmission to function controller toad converted into AC voltage with the voltage, frequency and synchronization crazy air directly into the national grid. This system meets all the criteria of the standard grid electricity safety device in your home network and power.
Currently, solar power system is grid storage system is best suited for use by households has been used in parallel with the national grid just do not worry about power outages. The system's advanced features Vietnam a priority before use solar power without power will offset the lack of achievement of national power.
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Principle diagram grid system with reserves
According to the database of solar radiation by NASA meteorological stations are used in the calculation of solar panels installed. Then in the North, solar radiation in the range of 3.8 to 4.3 kWh/m2/day, in the Central range from 4.5 to 5.21 kWh/m2/day, in the South about 4, 8 to 5.23 kWh/m2/day
So if your family in Hai Phong, 1kWp when mounting solar panels on average per day, this solar power system for a power of 3.2 kWh. If your family uses 500 kWh electricity / month, just installed solar system is 5.2 kWp enough (loss calculated on the device).
Package Installation costs for solar power system grid is used for data storage household, small office is 120-200 million / kWp including solar panels, the grid, the controller, inverter and battery charging. (Depending on equipment used)
With the initial installation costs are quite high, if your family is in town available national grid electricity supply, the drilling thinking of replacing entirely by solar energy.
Ideally you only need to install a small system 1000-3000Wp, used for lighting, computer, television ... can normally save substantial pay monthly electricity bills and contribute to environmental protection.
The solar power project for installation of households in the country
In Vietnam there at the mansion 72/1 Nhat Chi Mai, Ward 13, Tan Binh Trinh Quang Dung - has to produce about 6,400 kWh of electricity, the demand for electricity from family 42 solar panels.
Currently, Mr. Trinh Quang Dung, his family every month just to pay for electricity for power companies about 700,000, also the solar system he has installed power supply 250-300kWh / month. He said he was glad the outage never know whether electric power industry going again soon. Because most devices in the home such as TV, lights, fans ... are using solar power. Only air conditioning, water heating is the battery power for the national grid (EVN).
According to Dung's calculations, the use of hot water needs of the family, to cooking with solar energy to invest in a solar system of about 10 million. If the design capacity of solar power generation to triple his current home is completely "escapism" use the power of EVN.
The advantage of the solar power system at home is to be proactive power, clean energy, renewable. But the quality of electricity from solar power on par with the quality of the national grid - Dung affirmed.
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Mr. Trinh Quang Dung wash the solar panels to the sunlight they absorb better - Photo: Thuan Thang
He gave an example of installing a new device that allows air into the solar power grid. When solar power system provides 20% shortfall in electricity demand for the house "smart devices" this will automatically get enough power from the national grid to offset power shortages. If electricity from solar power system surplus equipment into storage in it, battery as a backup power
Home solar power system is Dung 2kW capacity, investment design costs about $ 20,000. But as he said, the current price is a little softer, maybe down about $ 2,000 compared to the time of his installation.
Mr Dung said that the initial investment cost for a solar power system is high, many families are not keen on using investment. So Dung's family still used the national grid to heat water, run the air conditioning. But he claims tend to use new energy sources, including solar, is inevitable.
In Hai Phong, Systech New Eco complete installation of grid connected solar power is 3060W and reserve capacity solar water heater 400L family physician at Mount Buffalo Pass, Thuy Nguyen, Hai Phong. Expected that this system will help reduce the average power consumption of 40% compared with non-use plans.
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Policies to encourage and support the development of solar energy.
Many countries have been working on this race. The European Community has completed a 600,000 solar roof and after 2020 will be declared for the introduction of "zero energy house" means the house of the building to ensure that power must not take from the power grid.
In Germany, nearly 300,000 solar roofs by 2020 and is expected to ensure the 47% renewable energy (wind energy, solar ...) to the total energy demand overall.
In China Sunshine program funded 50% of the estimated construction cost of solar power generation in rural areas, while in urban areas 30% funded.
Meanwhile, solar power which has potential in VN, in Germany must do twice as capacity in our country for solar power we are strong, plentiful. Therefore, if countries have policies to encourage and support the development of clean energy sources to reduce the burden on the current power sector and contribute to environmental protection.