Photovoltaic roof is not clear, the legal status of economic issues was to follow

According to understand, before 2012, tianjin, Beijing and other regions of the electric power company requires boosting and 10 kv grid photovoltaic power station, booster equipment and unit investment by the project construction, such as changzhou project, each rooftop photovoltaic power station booster to invest 700000 yuan fee.

This provision is dubbed, thought of her neighbor's house, to pay freeway around a circle, then down.

Photovoltaic roof in addition, in not clear legal status can only according to the self-provided power plant before the treatment, according to the relevant provisions of the self-provided power plant, in addition to the booster charge, photovoltaic roof standby fee to the powergrid companies pay system.

With 2 mw project in zhejiang province as an example, transformer total capacity of 40000 kilowatts, after interconnection project, you need to pay the monthly system standby cost a total of 40000 kw x 30 yuan/kw = $1.2 million, project according to the demand of 16000 kw per month is 16000 kw x 40 RMB/kw = $640000.

Increased pay 560000 yuan a month, spending 6.72 million in a year.

The reporter understands, the practice for the electricity law of power grid companies and self-provided power plant of the related regulations, not violate compasses.

In addition, there is no photovoltaic inverter design, grid detect cost stated in the price of the state.

According to Wang Si into a 10 mw project to 13 and outlets, design one by outlets to 420000; In addition, the grid must be net detection, the highest can get 2 million.

"This has been very difficult developers where there is so much money to pay, not completed on schedule or fail to grid, mostly for the reason."

Wang Si said: "a photovoltaic roof project average 30 to go program, the developer did not think of."

"Golden sun"?

ABB m&a Power - One Photovoltaic inverter market growth

Global power inverter and automation giant Swiss ABB group, according to the announcement will be $6.35 per share, valued at about $1.03 billion takeover of the world's second largest photovoltaic inverter manufacturers in the United States, baowei Power companies (Power - One).

ABB, said the deal has won two company's board of directors for approval, pending regulatory approval, is expected to be completed in the second half of this year. , market participants pointed out that if the acquisition is completed in the second half of the year, ABB inverter will be the industry leader.

It became the market an important example of the pv inverter market.

ABB purchase Power - One

Photovoltaic inverter "because of the fast approaching" parity "online, solar is becoming refactoring the main power in the future energy structure."

HaoKun ABB group chief executive, said inverter is the "intelligence center" photovoltaic power generation system, through the acquisition will make ABB global pv inverter industry leader.

HaoKun explains that "some question why ABB in the realms of relative chaos solar business at this time.

This is because, if wait until industry prospect, the purchase price will be a few times now", ABB purchase solar power inverter supplier at this time is in the case of foreseen the global market demand change, the best opportunity to grasp into this industry.

As the acquisition is completed, the Power - One will combine business to ABB group, discrete automation and motion control, and realize the power-and-power union.

The personage inside course of study thinks, the deal will help baowei power get a lot of research and development, service and marketing resources, and complement ABB business, the rapid growth of photovoltaic inverter will ensure that its status as a global pv inverter main suppliers, strengthen the company's leadership in the field of power electronics.

ABB inverter, head of global business that ABB pv inverter sales forecasts for 2013 will exceed $100 million.

Facing the "double reverse" power inverter market "terrible"

In recent years, the development of power inverter in our country.

Has been walking is "two head out" development pattern, nearly 80% of the raw materials imported from abroad, and products are exported to more than 90% of the photovoltaic cells components abroad.

Such a development model for photovoltaic inverter in our country greatly beholden to foreign markets, so that unable to cope with the Europe and the United States launched a "double inverse" survey, hard-hit industrial development.

In the face of Europe and the United States under the "double reverse" foreign market shrinking, China pv enterprises began to will be more attention to the domestic market, and more recently the national support policies are more of the domestic pv market prospects.

At the same time, along with the domestic market is open, as a grid tie inverter system is core component of inverter market demand will be rising.

Strong demand, inverter market a "blue ocean"

Driven by a number of supporting policies, to further stimulate the development of the domestic photovoltaic application market, and with a wide range of distributed photovoltaic building promotion, domestic solar photovoltaic generating capacity will be massive growth.

In this context, as one of the most important aspects of the supply chain, the domestic photovoltaic inverter industry will directly benefit, market demand will continue to heat up.

Power semiconductor photovoltaic inverter-saving ace

Power semiconductors as grid tie inverter saving ace, much attention has been paid to research and development is increasingly active.

This series introduces grid tie inverter device research and development trends, required materials and application technology, etc. 

GaN and SiC is the grid tie inverter are developing behind the current silicon semiconductor material of a grid tie inverter, the serial will be invited to the first time familiar with the staff of the two materials to explain.

Power semiconductor devices (hereinafter referred to as the " solar inverters ) is the effective use of electric energy is the indispensable key components.

From the power of the personal computer solar inverters products and household appliances, electric cars and railway vehicle inverter, solar inverters system to the power regulator, such as solar inverters components used in every field of people around (figure 1). 

At present, resources and energy problems more and more serious, people have high hopes to improve the performance of the solar inverters device.

Figure 1 photovoltaic inverter components are widely used

Power device has been personal computers, white goods, electric automobile, railway vehicle photovoltaic inverter, photovoltaic inverter system power regulator, etc.

Support modern society of silicon power components from the beginning of the thyristor, after bipolar transistor (BJT), power MOSFET, the evolution of the insulated gate bipolar transistor (IGBT), has more than 50 years of development history.

Silicon power device development has become increasingly mature, the performance is very difficult to significantly higher as it has in the past.

Therefore, as a new semiconductor materials can leap improve performance, the band gap is very big "broadband gap semiconductor silicon carbide (SiC), gallium nitride (GaN) bears the ardent expectations of people.

"Show" mw photovoltaic inverter system

The world's most influential, the most professional international, large-scale pv event, "SNEC the 7th (2013) international solar energy power inverter and engineering (Shanghai) expo and BBS", will be on May 14-16 in Shanghai new international expo center.

Easy as distributed power inverter leading domestic enterprises, will be there with independent research and development production of "one-stop MW grade outdoor photovoltaic power inverter integrated system", and has been widely used in domestic and international numerous large-scale photovoltaic power inverter 500 k of the power inverter, junction box, power distribution ark dressed up and a series of core technology products, a comprehensive display, easy in the field of distributed generation leading technical strength and brand influence.

According to introducing, this exhibition by the China renewable energy society 17 jointly organized by international agencies and organizations, such as a total of more than 1800 domestic and foreign exhibitors to participate.

Photovoltaic inverter  during the exhibition, but also to develop strong academic BBS, invite is known as the "father" of photovoltaic inverter technology and photonics at the university of new south wales, Australia, Martin green, director of the centre for scientific research and the photovoltaic inverter industries association (SEIA), chairman and chief executive of Rhone a. 

Resch global pv fields such as the most authoritative international leading scientists, from the industry perspective, problem oriented, pulse together China, Asia and the world solar photovoltaic inverter market, the common way to lead the industry innovation and development.

In this exhibition, easy to powerful squad on the overall solution for distributed generation and the core technology products, products include outdoor photovoltaic power station integrated one-stop MW level systems, grid tie inverter , transformer 500 k type photovoltaic (pv) grid inverter, power frequency isolation type photovoltaic (pv) grid tie inverter, wall-mounted off-grid pv inverter, photovoltaic array junction box, power distribution cabinets, etc.