Does solar PV system equipment generate noise and electromagnetic waves?

The solar PV system is mainly composed of solar photovoltaic modules and converters. It does not generate noise during operation, and the output of the modules is direct current, and there is no problem of high-frequency radiation.

A converter is a device used to convert direct current into alternating current. It must comply with International Electrotechnical Commission (IEC) standards on electromagnetic compatibility before it can be listed. There is no concern that electromagnetic waves are harmful to human body in this case.

How long does a solar PV system last?

The solar PV system includes important components such as solar photovoltaic modules, DC junction boxes (including isolation switches and protection components), inverters, and AC switchboards (including DC switches and protection components), which are installed by piping and wiring.

Modules and converters are two important system components, and their quality, reliability or life span are related to the power generation performance and life of the system. The installation of solar photovoltaic systems should use certified modules and converter products to be more secure. The current module verification specifications include IEC, UL, CNS and other standards, and the converter verification specifications include VDE, EN, IEEE, CNS (partial), and other standards. Under normal conditions of normal use, the lifespan of the certified module should be 20 years, and the lifespan of the certified converter is about 10 years.

After I invest in PV system, will Taiwan Power Company(TPC) purchase the electricity?

Yes, because this is a national policy. For details, please refer to the “Million Rooftop PVs Project” website of the Energy Bureau of the Ministry of Economic Affairs. The main content of the plan is: “The ” Million Rooftop PVs ” project is scheduled to reach 1,020MW solar photovoltaic system installation in 2020, and Taiwan’s photovoltaic power generation capacity target is 3,100MW in 2030.” To encourage people to invest and install solar energy, the county and city governments have also introduced subsidy measures in addition to the acquisition of the photovoltaic system by TPC. For the further information, please refer to our latest news.

TPC guarantees the acquisition for 20 years. What about 20 years later?

The power generation of the solar photovoltaic system will decrease over time and be about 90% of the original after 20 years. At this point, you have two choices:

  1. Continue to sign contracts with Taipower and sell power to them, but the acquisition time is changed to five years.
  2. Adjust the solar photovoltaic system equipment, and then save the power generation for your own use. In terms of an area of ​​24 square feet, about 7.2 degrees of electricity can be generated per day. If you are using one ton air-conditioning, you can use it for 7.2 hours. It is usually a hot day when the air conditioner is on. If the solar photovoltaic panel is successfully exposed under sunlight for eight hours, it can generate 14.4 kWh of electricity. Based on the current electricity price, it can save about one thousand and five hundred NTD per month.

Although installing solar photovoltaic systems is "close to" zero risk, what are the risks of installing solar PV system?

For example, the occurrence of extremely destructive earthquakes and major devastating disasters is not covered by the warranty. We can only do our best to achieve a certain level of anti-vibration and typhoon in construction design and operation, and reduce the risk of various damages by nature.

Taiwan is prone to typhoons and earthquakes . Will solar PV systems also be affected?

Before construction, the structure must be certified by a structural technician to confirm that it can withstand typhoons and earthquakes of general intensity. In addition, when signing a contract with TPC, the contract has detailed specifications on the strength of resistance to natural disasters, and our construction quality must meet relevant laws and regulations, so you could be assured.

If I want to invest in a solar photovoltaic system, what conditions must be met ?

First of all, it must be ensured that there is no shelter in the place that the solar photovoltaic panel is going to be installed, even if a wire crosses over it is not allowed. Next, if the PV system is for an individual user, it must be determined that installation site is a legal building, and you have

  1. Land ownership certificate
  2. Building ownership certificate
  3. Building Use Permit

If you are the lessee of installation site, there must be a written consent from the lessor to prove the use.

Does the solar PV system need maintenance?

Yes, if there is too much dust on the surface of the solar photovoltaic panel, it will affect the power generation efficiency. It is recommended to clean it regularly and keep the surface clean.

Do the orientation and layout of the building affect the power generation effect of the solar photovoltaic system?

It does not matter which orientation of the installation site faced. The premise is that there must be a “legal” roof. Many private houses like to put up awnings on the roof, but these are almost all illegal constructions, and TPC will not agree to the contract.

In addition, if there are no buildings and only vacant land, TPC’s purchase price for ground-based solar PV system is only about six NT dollars, which is too low for the owners.

The purchase price of solar power is decreasing year by year, will my income decrease accordingly?

No. The purchase price is based on the price announced at the time of the contract and will not be affected by changes in the purchase price.

Is the power calculation method of the solar photovoltaic system based on the user output? Or is it calculated at the end of TPC?

It is based on the user output terminal, that is, TPC will purchase whatever meter displays.

How much time does it take to install solar PV system? Is the procedure in the application complicated?

It only takes 4-6 months to install solar PV system, we will assign professional technician to help.

Where in Taiwan can photovoltaic panels be installed for power generation?

Solar panels can be installed as long as there is sunlight; for example: the roof of a transparent building, the roof of a factory, the roof of a farmhouse, and the roof of a parking lot. You can refer to our actual case.

Can solar photovoltaic systems be combined with household solar water heaters?

The solar photovoltaic system uses the sun to convert electrical energy to generate electricity, while the solar water heater uses solar thermal energy to heat water. The two systems are completely different and therefore incompatible.

Is there a guarantee for the electricity generation efficiency of the PV system?

In the warranty book of the original factory, the solar photovoltaic module board has a power generation efficiency of about 90% in 12 years and about 80% in 25 years.

How long is the construction period of the solar PV system?

The construction period of the solar PV system (materials entering the site to the completion of the watch) is about 1 to 2 months. Varies according to the size of the plant.

Will the solar PV system produce radiation?

The electricity generated by solar energy is direct current without radiation. It can be used if it is converted. It is a very safe power generation system.

How much electricity can 1KW generate?

The amount of electricity generated varies according to the number of hours of effective sunlight. The average daily power generation in the north is close to 3 degrees, and the average daily power generation in the central and southern regions is 3 to 4 degrees.

Twenty years is too long, what should I do if the plant or land is sold?

Resale of houses, factories or land, solar photovoltaic power generation system can also be transferred as assets.

Is solar power safe? Will it cause roof leaks?

The electricity generated by the solar photovoltaic power generation system is direct current, which is completely non-radiation and does not harm human health; and a complete protection mechanism has been set up in accordance with international standards and regulations, so there are complete protection measures for leakage, overvoltage, overcurrent, and lightning strikes.

Because Taiwan frequently, suffered from typhoons many people worry about whether the photovoltaic panels installed outdoors will be blown away. In fact, the bracket system has been standardized and has been certified by a professional technician to withstand strong winds of level 14 or higher. The impact of the typhoon can be ignored. In addition, for various roofs, solar photovoltaic panels are installed in a way that does not damage the roof structure, and there will be no water leakage problems.

How about the installation cost of a solar photovoltaic power generation system?

Generally speaking, the installation cost of solar photovoltaic power generation system (equipment) varies due to the system capacity, material selection, construction method, and the particularity of the installation site (such as additional lead wire costs), etc. The current unit price of the system on the market is about 50,000~80,000 NTD/ MW.

What capacity of solar photovoltaic power generation system can be installed on the roof of a general house ?

When using single crystal or polycrystalline module products, under the condition of flat roof installation (the front-to-back arrangement of solar photovoltaic modules must be considered), usually 1 kWp (kWp) solar photovoltaic system requires about 10 square meters (about 3 pings) The installation area of ​​the sloping roof is about 7~8 square meters. Choosing module products with different conversion efficiency will also affect the system capacity that can be installed; in the same area, using a module product with higher conversion efficiency, the system capacity that can be installed will be larger. When evaluating the capacity of the installable system of the roof area, it is still necessary to consider whether there are objects on the roof site that will cause the module to shade, such as parapets, water towers, roof protrusions, trees, nearby buildings, etc.; avoid installing modules in shaded areas. Group, so as not to reduce the power generation of the system.

Does a system using modular products with higher conversion efficiency have a higher power generation capacity under the same capacity?

The conversion efficiency of a solar module refers to the output electrical power and the input solar power (intensity of solar radiation multiplied by the module area) under standard test conditions, which represents the output power of the module per unit area. Under the same system capacity, the conversion efficiency of the modules has no direct relationship with the power generation of the system; a system with higher conversion efficiency modules will require less area for installing modules.

If one invests in the installation of solar photovoltaic power generation systems, how long it takes to recover the investment?

Taking Chiayi as an example, if the public installs a 5kWp solar photovoltaic power generation system in Chiayi area, and the installation cost per 1kWp is estimated at 120,000 NTdollars, the 5kWp system installation cost is about 600,000 NTdollars, which can generate 6,295 kWh of electricity per year ( (Calculated with reference to the above table), calculated based on the first phase ceiling rate of 9.4645 NTdollars /kWh for the first phase of the 101 year renewable energy purchase rate, and it can be recovered in about 10 years.

How long does it take to set up a solar photovoltaic power generation system?

After the public has signed the sales and purchase agreement with the system manufacturer, the installation work of the solar photovoltaic power generation system can be divided into two parts: engineering construction and administrative work. Administrative work generally includes the following processes:

  1. Parallel review opinions (all districts of Taipower Company): Confirm the parallel connection point after the parallel connection is completed, and benefit the subsequent setting of construction reference.
  2. Agree to record (Energy Bureau): Confirm and count the overall domestic installation capacity and location information.
  3. Sign the electricity purchase and sale contract (all districts of Taipower Company): to ensure the electricity purchase rights of the installer.
  4. Construction work (installer): the installer handles the construction work by himself or entrusts professionals to handle it.
  5. Parallel completion (all districts of Taipower Company): The system starts power supply and pricing.
  6. Equipment registration (Energy Bureau): Complete the operation of the power generation system.

For a system with a capacity of about 10 瓩, when the system design and material preparation are completed, the system installation project will take about 2 weeks; the administrative work time will take about 1 to 2 months, depending on the manufacturer’s degree of cooperation and the situation of the case.

Reminder: The site where the solar photovoltaic system is installed must have relevant legal documents, such as house use license, land title, and recent electricity bill payment slips.

More information please refer to

Energy Bureau:http://www.moeaboe.gov.tw/,

Taiwan Power Company(TPC): http://www.taipower.com.tw/

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