Stagnant demand in the global PV market , the vast majority of the solar device manufacturers are responding to the declining profitability of the unfavorable situation, but there is a field of industry chain is very small losses that PV inverters .

    With solar cells and panels of different manufacturers , PV solar power inverter manufacturers did not how by increasing competition and economic downturn. Solar inverters complex structure, make it difficult to maintain the relative price is also relatively stable .

    Analysts said the market size of the inverter reach 60 billion U.S. dollars, subject to overall adverse environmental effects , the PV inverter margins will be reduced , but no other areas of the industry chain the decrease so much. A solar power generation system usually consists of photovoltaic solar panels and inverters composition, the former is used to generate electricity , which convert DC to AC power available .

    By overcapacity , fierce competition and government subsidies continue to enhance the degree cuts affect , solar cells and solar panels prices have been declining. Carlson Renewable Energy Fund manager Jon Sigurdsen said: "For an inverter companies, interior design products more , although the production of an inverter is very simple, but to do a good inverter is difficult. This it means to enter this field have a higher threshold for the industry , but also beneficial to maintain high profit margins . "

    " Better " is not meant to "perfect the ." Last month, the world's largest PV grid tie power inverter manufacturer SMA Solar lowered its full-year earnings forecast , U.S. rival Power-One also this week lowered its third-quarter earnings outlook.

    Now, with the difference in quality solar panels increasingly smaller , the brand has become less important ; while in the field of solar inverter , technology and brand awareness there is conducive to product sales. Keen on solar cells and modules Asian companies are rarely involved in the PV inverter .

    IMS Research senior research director Ash Sharma said: " China suppliers control 40% of global solar module market share, while the market share of the inverter is only 5% , and the growth rate is relatively slow ." Number of competitors than also help prevent small price decline. Although there are more than 150 global PV inverter suppliers , but the top 10 companies control 75% of market share.

    So far this year , the price of solar panels has fallen by 40 %, but the retail price of PV inverters fell only 10-15%. Entire solar panel solar power system costs accounted for about 40% , while the proportion of solar inverter is 15% occupied .

Advanced Energy (NASDAQ: AEIS) today announced that its overall sales lower than previously expected downward slightly been improved. Although the company has said a few weeks ago PV projects might be delayed first-quarter sales have an impact, but this PV inverter manufacturer recently announced second-quarter sales improved slightly compared to the first quarter. AE renewable energy business unit sales in the second quarter and the first quarter of $ 37.6 million compared to $ 40.8 million upgrade. Total revenue reached $ 138.2 million, while the previously expected down to 137 to 140 million U.S. dollars between.

AE represents the second quarter of photovoltaic gridtiepowerinverteronline projects have now been delayed start, while demand is expected before the end, especially the U.S. market demand will be expanded.

AE Bartz, CEO Hans (Hans Betz) Doctor said: "Our second quarter of the renewable energy business is subject to the impact of various changes in the market, such as solar panel prices, increasing competition and stimulate policy changes, etc. For business impact far beyond our previous expectations. Nevertheless, we are pleased to see that thin-film solar cell business in accordance with previously developed as expected.

Outlook second half of 2011, we believe that the effect of diversification strategy will be more obvious. Despite our business development with the thin film battery market cyclical development has slowed, but before the delay renewable energy projects have been re-launched, it is because customers want to carry out the project before the end of the year and thus enjoy preferential taxation policies.

In the long run, our North American utility-scale wind turbine inverter demand will continue to grow, and we are confident that through the AE based on levelized cost of energy (LCOE) sales strategy, superior product performance and excellent run the services will continue to strengthen our market competitiveness. "

Recently, the Shanghai Chint Power Systems, Inc. sent to Italy for the 20 100kW grid inverter has entered trial operation stage, the 20 inverters are used for GSF Capital Brindisi and Taranto in Italy's five a power plant project.

     And the net, Chint power systems engineering and sales service in person to the scene, supervision and commissioning work CAPE machine, ensure success and power generation. From May 15 the first power station officially grid So far, these inverters are normal running and sustained high-efficiency power generation.

     GSF Capital stands for Global Solar Capital Ltd. in Singapore, in Spain, Italy, China and other places have branches, raising funds invest primarily for photovoltaic power plants, in 2010 invested nearly 155mW ground power plant project, the main market in Italy. Chint Power Systems is GSF CAPITAL Shanghai's first direct purchase inverter enterprises.

     Chint Power Systems not only provides perfect quality dc to ac power inverter products, more integrated global service network, allowing customers to enjoy 24-hour support from worries. Chint beginning a major European power system communication equipment service providers signed a service agreement, service coverage in Germany, France, Britain, Italy, Spain, the Netherlands, Hungary and other countries. Chint supply and service partners around the world will work together to provide customers with convenient, personal service.

Recently, Samil Power Co., Ltd. (referred to as "Samil Power") and the Qinghai Huanghe Hydropower Development Co., Ltd. (referred to as "the Yellow River Hydropower") formally signed the PV grid-connected inverter supply agreement for China's Qinghai Golmud 250MW grid-connected photovoltaic power plant project to provide a total of 58 sets SolarOcean500TL power 29MW photovoltaic grid inverters.

Golmud 250MW grid-connected photovoltaic power plant is by far the world's photovoltaic power plant construction area of ​​construction scale, with a total installed capacity and total area are among the first large-scale photovoltaic power plants. Project will be built into the Qinghai Power Grid, effectively alleviate the local power grid supply and demand, optimize system power structure, reduce environmental pressures, promoting regional economic sustainable development.

As the world's leading photovoltaic inverter manufacturing experts, Samil Power This is the Yellow River Hydropower provides SolarOcean500TL power photovoltaic inverter, with world-class quality assurance, product has obtained CE, ISO, TUV , China Golden Sun and many other authoritative certification, with cutting-edge technical features: the use of efficient and advanced IGBT power devices Mppt automatic tracking technology, to adapt to the harsh power environments, with up to 98.6% of the maximum efficiency. SolarOcean products have been widely used in Macedonia, Indonesia and other countries photovoltaic power plant projects.

Samil Power Chairman and CEO Mr. Cui Peiju said: "The success of the contract Samil Power Huanghe Hydropower, we will be excellent product quality and product performance for the protection, development and construction in western China power grid building blocks."

Siemens West Chicago, Illinois, has completed the upgrade of the plant to begin production of photovoltaic inverters. Siemens has invested about $ 10 million to the two plants into this upgrade, which one will be used to support the rapid growth of the U.S. solar power market.

     Currently, Siemens is located in West Chicago is producing SINVERT PVS PV pure sine wave power inverter for the American Southwest 20ME use solar power plants. Early 2011, Siemens has made this multi-million dollar contract. Under the agreement, Siemens will be delivered in October this year before all products.

Siemens Energy and Automation Division Raj Batra, vice president of AMD, said: "For Siemens, today is a proud day, because we are located in West Chicago plant will continue to maintain its leading position in the solar industry, and further as the new U.S. energy markets efficient products we manufacture in the United States has gradually inverter will this work by the blue-collar jobs to green collar shift. "

Siemens West Chicago plant consists of two plants constitute an area of ​​200,000 square feet, 350 employees. In addition to the production of photovoltaic grid tie power inverter, Siemens also manufactures motor control centers, motor starters, switchboards and control cabinets. Siemens on the plant was renovated, modernized operations, adopted a number of recommendations of employees, increase productivity and efficiency.

Siemens control and system engineering business unit vice president Dale Langston said: "Since the 1950s, Siemens began committed to the development of solar energy. Now through local manufacturing plants and a broad product portfolio to give customers a better service."

Siemens solar PV inverters in the process of playing a very important role. Through the inverter solar array can generate direct current into alternating current into the grid after. West Chicago factory capable of producing 500MW of photovoltaic inverters. In the United States, the solar industry is one of the fastest growing industries in 2010 with annual sales of more than 6 billion U.S. dollars, the national PV capacity reached 2.6GW.