Prejudice in the photovoltaic industry, have you ever had it?

Since the beginning of the market in the late 1990s, photovoltaic power generation technology has never escaped the "prejudice". Such a bright industry dedicated to providing high-quality clean energy for human beings has been surrounded by various rumors in the past 20 years.
Even today, China's PV industry has achieved absolute lead in the world and has become a beautiful business card for China's manufacturing industry. However, whenever PV people use facts to break a rumor, there will always be new voices of doubt. Rumors and misunderstandings about the photovoltaic industry have not disappeared. What makes us sad is that there are always some people who are closed their eyes, do not want to see the achievements of the photovoltaic industry today, and do not see the clean energy will bring great help to human beings, only to guard against prejudice. question. We don't know who they are and why they don't, but today, we just want to talk to you about the prejudices in your eyes these years.

Prejudice 1: High pollution and high energy consumption in the photovoltaic manufacturing sector?

A low-carbon advertised industry is actually a highly polluting and energy-intensive industry!
First of all, in terms of pollution, as early as 2010, the Ministry of Industry and Information Technology, the National Development and Reform Commission, and the Ministry of Environmental Protection issued the “Plastic Industry Access Conditions”, which imposed strict regulations on the recycling rate of some substances in the polysilicon smelting enterprises. Clearly stipulate and limit the location, energy consumption, environmental protection and scale of crystalline silicon production. The “Regulations for Photovoltaic Manufacturing Industry” introduced in 2015 further improved the clean production standards for all production steps of photovoltaics. The production of crystalline silicon has already realized the closed loop production of the improved Siemens method, and it has achieved “controllable and repayable” and realized recycling. Therefore, there is no factual basis for the high pollution of photovoltaic manufacturing.
For high energy consumption, we must consider the energy recovery of photovoltaic products; in 2016, the total energy consumption of photovoltaic power generation from raw silica sand to crystalline silicon photovoltaic power generation system is about 1.52KWh/W, while 1W photovoltaic products are The region with the worst lighting conditions in China can also generate about 1KWh of electricity, which means that every W photovoltaic product can recover the power lost during its manufacturing process in less than one year. The life cycle of general PV products is more than 25 years. . More importantly, with the continuous advancement of technology, the manufacturing energy consumption per W photovoltaic product is also decreasing, and the power generation is increasing. Compared with the power generation and manufacturing power consumption, how do we say that photovoltaic power generation is high? Energy consumption.
Prejudice 2: Discontinuity of photovoltaic power generation
If you say it again, you can only generate electricity during the day!
Non-continuous bias seems to have directly hit the "pain" of photovoltaic power generation, so it has been enduring for many years, and combined with the "power consumption" and other topics brought a new bias of "junk power." However, you have "non-continuous + difficult to absorb" I also have "photovoltaic electricity + good energy storage."
With the continuous enrichment of energy storage methods and the continuous advancement of energy storage technology, the combination of photovoltaic and energy storage has effectively solved the non-continuous problem of photovoltaic power generation. From the perspective of energy storage methods, chemical storage energy has advanced by leaps and bounds, and physical energy storage methods such as pumped storage are fully mature, and increasingly electric vehicles can also become effective energy storage carriers. In terms of power consumption, the state has issued a series of related policies to fully protect the problem of photovoltaic power generation. The integration of large power grids can also effectively solve the problem of photovoltaic power generation. The concept of global energy Internet can even solve the non-continuous problem of photovoltaic power generation through global power allocation.
Prejudice 3: Photovoltaic power generation affects grid security
Photovoltaic power generation is unstable and will impact the power grid and affect the safety of the power grid.
It is also directed at the instability of power generation caused by the physical principles of photovoltaic power generation. For such prejudice, we have to put some data to illustrate:
The grid connection of photovoltaic power generation is carried out in accordance with national standards and international standards. Strictly implement the national requirements for voltage, waveform, frequency, phase, harmonics, etc.:
The voltage deviation shall comply with the provisions of GB/T12325, and the allowable deviation of the three-phase voltage shall be ±7% of the rated voltage.
The frequency deviation should meet the requirements of GB/T15945, and the frequency deviation value is ±0.5Hz.
Harmonic and waveform distortion The total harmonic current should be less than 5% of the inverter's rated output, and the even harmonic should be less than 25% of the low odd harmonic limit.
Power factor When the PV system inverter output power is greater than 50% of the rated power, the power factor should be no less than 0.9.
The voltage imbalance should meet the value specified in GB/T15543, the allowable value is 2%, and the short-term time must not exceed 4%.
When the DC component power plant is running, the DC power component fed by the inverter to the grid does not exceed 1% of the AC rating.
Photovoltaic power generation projects must complete applications, surveys, approvals, and grid-connected inspections under the control of the national grid to ensure the quality and safety of photovoltaic power generation.
Simply put, inverters and other equipment can fully guarantee the stability of photovoltaic power generation. For large-scale ground power stations, equipment such as large transformers will be used to ensure the stability of the Internet power.
Prejudice 4: Photovoltaic subsidies
Photovoltaic is a scorpion, deceiving state subsidies, and without subsidizing the photovoltaic industry, it will not survive!
Subsidies have also been one of the most concerned topics for skeptics. I have to say that this "cheat" word is really harsh. With regard to subsidies, we must understand that the original intention of the subsidy policy is to vigorously support the promotion of the development of the photovoltaic industry, but also to reduce the cost of installation investment for ordinary households. China is not the first and not the only country to subsidize the photovoltaic industry.
Taking Germany, the first country in the world to introduce subsidies for photovoltaic power generation, as an example, through the support of industrial policies, Germany has developed rapidly in the case of limited natural light resources. Under the impetus of technological advancement and market competition, it is the first in the world. Affordable Internet conditions. Then, gradually reducing the subsidy policy for the declining slope also provided a huge space for the development of the German photovoltaic industry, promoted the energy transformation, optimized the energy structure, and implemented the green development, which was achieved in one fell swoop. The United States, Japan, India and even African countries have formulated various support policies for photovoltaic power generation in order to achieve an affordable online access at an early date and achieve a double harvest of economic and environmental protection.
With the continuous advancement of technology, the cost of photovoltaic power generation has dropped rapidly. Today, there are many on-grid tariffs below two cents in the world. The global installed capacity of photovoltaics is increasing. It is almost in front of the net price. The parity online is not only not The end of the photovoltaic industry, but a new starting point for the development of the photovoltaic industry, is the pride of all PV people.

There are still many prejudices and rumors about the photovoltaic industry. We can't explain them here, and we can't use a tweet to eliminate them. But we hope that everyone can see that the essence of photovoltaic power generation is to provide high-quality clean energy. The light qualities that it has have determined that this must be an industry that benefits mankind. We know that any new things will be questioned at the initial stage, but rumors and prejudice will not stop the PV people. We will respond to the questions with action, break the rumors with the facts, and hope that the society will report to the PV industry. More attention, let rumors and prejudice stop at the wise.