After the 630 photovoltaic power station grid-connected window was passed in 2017, the distributed photovoltaic industry delivered a beautiful answer sheet. According to incomplete statistics, in the first half of 2017, there were 24.40GW of newly-added photovoltaic installations and 7.11GW of distributed photovoltaics, accounting for more than 29% of the total. The spectacular performance of distributed photovoltaics attracted the attention of many investors. Some people even suggested that they should be chasing wins to increase investment in newly-built distributed photovoltaic projects. The reason is that there are still many high-quality distributed photovoltaic roof resources, but is this really the case?
As we all know, distributed power stations have strict requirements on the load, structure, orientation, surrounding environment, property rights, power facilities, and access resources for the grid. It is required that there should be no shading around the roof, high buildings, chimneys, etc. to avoid affecting the effects of light reception and power generation; there must be no high-dust emission enterprises such as thermal power plants within the surrounding area of ​​the roof to avoid the dust from covering the surface of photovoltaic modules; the roof cannot be typhoon and hail. In areas where natural disasters occur frequently, natural disasters should be avoided in power plants. In addition, the property rights of roof-owned enterprises must be clearly defined and their creditworthiness must pass. The distributed power plants that they invest in can be smoothly operated and gain profits; more importantly, the roof-owned enterprise managers are required to have willingness to build distributed photovoltaic power plants, such as some large central enterprises, the roof of various resources excellent, easy access to electricity, but the managers do not hire the wishes of the roof, the roof is difficult such as the construction of high-quality carrier.
In summary, the high quality roof standards required for distributed photovoltaic power plants are very high and are not readily available. With the previous round of search, screening, acquisition, and stockpiling of domestic roof resources by major investment companies before 630, high-quality roofs suitable for the construction of distributed photovoltaic power plants have been carved out.
According to analysis by industry insiders, in the roof resources, commercial and commercial roofs have always been the focus of grabbing by distributed photovoltaic companies. Generally speaking, high-quality roofs capable of installing large-scale distributed photovoltaic power plants are mainly self-owned roofs of industrial enterprises, commercial enterprises, public institutions, large-scale state-owned enterprises, and manufacturing-listed companies. Such roofs do not have much growth due to a large area of ​​construction, large investment scale, large land resources, and limited government policy planning. Therefore, the roof resources of high-quality industrial and commercial buildings will remain scarce for a long time. Taking an enterprise as an example, the roof searched for in 2016 exceeded 20 GW, but the actual roof of a distributed photovoltaic project was only about 5%, less than 1 GW. In other words, 95% of rooftop resources are not suitable for building distributed photovoltaic power plants.
Roof resources to the current building is not distributed photovoltaic power plants, for example, mostly after several rounds of screening remaining PV companies between 2015 and 2017, the roof is not such a small area, or bearing a small load, the roof is severely damaged Or, the property right of the roof itself is not clear and there is a problem with the company's credit standing. According to professional analysis, among the only existing roof resources, the roofs of companies that can independently build more than 3 MW are relatively limited, while the large roofs that can be contiguously developed and build large-scale distributed photovoltaic power plants are even more scarce. The roof of industrial and commercial buildings is a product of social and economic development. Judging from the current status and trends of domestic economic development, it is unlikely that a large amount of high quality roof resources will emerge in a short period of time.
According to the relevant agency survey showed that the current domestic lighting conditions are good, high-quality commercial and industrial roofs, Shandong, Hebei, Henan and other places have been developed almost exhausted, the few remaining high-quality roof has also been the major PV companies mad scramble.
As early as August 1, 2016, the state issued the National Standard for the Rooftop Distributed Power Station Structure. The new standard clearly stipulates that the design of the rooftop distributed power station should strictly comply with the current national mandatory standards, and can no longer be calculated with the roof load. The standard is replaced. As soon as this regulation was issued, even if it was originally a distributed photovoltaic power station standard and was not selected by the PV companies before 630, a large part of the "fish that escaped the net" had exited the list of high-quality roofing resources because it did not meet the mandatory standards set by the new national standard. . Under the mandatory standards of the new national standard, companies need to spend 0.3 yuan per watt on reinforcement costs when setting up distributed photovoltaic roofs. Taking 1MW distributed power station as an example, the cost of reinforcement will be as high as 300,000 yuan, virtually increasing the investment pressure of the company.
Thus, the roof of distributed power station project in 2017 and 630 before the network is distributed rooftop solar companies needle in a haystack, the layers of screening high-quality roof, good lighting conditions such projects, investment income is higher, can be distributed photovoltaic " Gold roof." However, the newly-invested distributed photovoltaic projects after 630 in 2017 will not have a large number of high-quality rooftop resources. In addition, the cost of roof reinforcement will increase, labor costs will increase, and there will be no significant cost reduction of photovoltaic modules and other materials in a short period of time. The increase in the cost of power station construction is even more critical. According to the usual practice, after 630, the national subsidy standard and benchmark on-grid tariff will be lowered. The investment rate of investment in new power plants will fall sharply and the investment value will be lost.
Distributed PV for the current market conditions, after 630 high-quality roof is not much resources, for investment companies and four small five power generation groups, distributed photovoltaic power plant investment has two options, first, to the continued development of non-construction Roof power stations, however, are faced with drawbacks such as high development difficulty, fierce competition, and reduced yield. Second, it is to purchase distributed photovoltaic power plants that have already been built so as to maximize economic returns and social benefits.
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