At present, the main materials of solar panel racking system are Aluminum Alloy (AL6005-T5 surface anodized), Stainless Steel (SUS304), Galvanized Carbon Steel (Q235 hot-dip galvanized). Among them, stainless steel is the best, which has the advantages of high strength, corrosion resistance, and high recycling value. But correspondingly, the cost of stainless steel is the highest among the three materials. The appropriate choice is aluminum alloy. Aluminum alloy racking system for solar is widely used in the solar roof racking and solar ground mount structures, it has the characteristics of corrosion resistance, light weight, beautiful and durable. It is worth mentioning that aluminum alloy solar panel mounting brackets basically does not need maintain in the later stage, and it has high recovery value, with relatively small installation cost to achieve the maximum use effect. The last is galvanized steel solar panel mounting, which has the advantages of the low cost, stable performance and high bearing capacity. However, the later maintenance cost is very high. Because the anti-corrosion performance of the steel PV mount system is not high, when the zinc layer on the surface of the steel support falls off, it will be corroded quickly and become very fragile. Therefore, the protection of the zinc layer on the surface of the hot-dip galvanized steel solar structure is the most important thing in the later maintenance. Moreover, the recovery value of carbon steel bracket is the lowest of the three materials. There are long and short cost recovery periods for photovoltaic projects. Generally speaking, the cost can be recovered within 5-7 years. However, the average life expectancy of most solar panel racking system falls between 25 and 30 years. The remaining life of photovoltaic system determines the profit. Therefore, it is very important to choose a suitable mounting bracket. You must take the maintenance cost and recovery value into consideration. Corigy focuses on the design and manufacture of solar panel support, and will design the most suitable solar mounting solutions for customers by comprehensively considering the factors such as land, climate and environmental conditions of the installation site, and choosing the materials suitable andeconomical. CORIGY SOLAR more professional and flexible solar mounting solutions waiting for you here!CONTACT US! Above news from CORIGY SOLAR Sales & Marketing department Phone: +0086-592-6883200 E-mail: sales@corigy.com

The Chinese court charged with appointing an administrator to restructure solar manufacturer Yingli has decided to package the six Yingli companies concerned into one administration, according to a document filed with the U.S. Securities and Exchange Commission (SEC) today. Yingli Energy (China) Co. Ltd; Baoding Tianwei Yingli New Energy Resources Co. Ltd; and Yingli China subsidiaries Hainan Yingli New Energy Resources Co. Ltd; Tianjin Yingli New Energy Resources Co. Ltd; Hengshui Yingli New Energy Resources Co. Ltd; and Lixian Yingli New Energy Resources Co. Ltd will be treated as one package by the administrator appointed by the Baoding Municipal Intermediate People’s Court in Hebei province. Announcing the court had agreed to demands from Yingli creditors to appoint an administrator last month, Yingli said the core contents of its restructuring plan were “the conversion of a significant portion of the financial debts of Yingli’s major PRC subsidiaries into controlling equity interests in the subsidiaries, full and orderly repayment of parts of financial debts and other payables, and fund injection [from] third-party platforms,” hinting at the break-up of the business. The SEC filing published today by the OTC Markets Group-listed company, stated: “Yingli Green Energy, the ultimate parent company of those six companies, cannot assure that any proposed debt restructuring plan will leave any value for its shareholders and will further update the market when there is significant new progress.”

Longi, JinkoSolar, Risen Energy, Suntech and Zheshang Development were the winners of Zhejiang Communication Investment Group’s (CICO), recent PV module tender. CICO said on Wednesday that the companies will supply 140 MW of monocrystalline solar panels with power ratings above 335 W. Hanergy Mobile Energy, a unit of Hanergy Group, has filed for bankruptcy, according to documents submitted to China’s National Enterprise Bankruptcy Information Disclosure Platform by a person by the name of Xiao Lei – likely one of the group’s creditors. A court in Beijing is now reviewing the filing. Risen Energy, Huawei and TuV Rheinland were among the companies and organizations that have joined the new 600W+ Photovoltaic Open Innovation Ecological Alliance, which was officially established on Thursday. Other participating companies include Flat Glass, Arctech Solar, Nextracker, JA Solar, Trina Solar, Datang, and Zhonghuan Semiconductor. China Huadian announced a tender this week for projects in fiscal 2020. The procurement exercise is for 2.04 GW of monocrystalline PV modules and inverters, with bids to be finalized by the end of this month.

Researchers at the Polytechnic University of Madrid have examined the feasibility of storing power generated by rooftop solar as heat which can then be used to generate power when the sun isn’t shining – ‘power-to-heat-to-power storage,’ or PHPS technology. The household system in Madrid studied by the scientists included a highly efficient, thermally-driven heat pump and solar thermal collectors. The ‘trigeneration’ system, or combined cooling, heating and power (CCHP) technology includes two types of heat store: a low or medium-grade one for domestic hot water and space heating and a high-grade heat store for combined heat and power generation. The heat generated in the former can be used for cooling as well as heating demand. A reference case was based on grid power consumption plus an electrically-driven heat pump for cooling. Factors The Madrid group said factors including the cost of grid power and fuel and the price and productivity of PV arrays would influence the optimal size of trigeneration systems. The researchers estimated a €900-1,200/kW cost for PV systems and based their estimate of PHPS profitability on the resulting electricity savings. A domestic power-to-heat-to-power storage system could drive grid electricity savings of more than 70%, according to the researchers, but would require 12-15 years to pay for itself. “This holds true even when the heat-to-power conversion [efficiency] is moderately low (20-30%), provided that the economic conditions are favorable,” the researchers stated. The Madrid group conceded heat losses in the high-temperature thermal store would mean a PHPS system would mean a solar power self-consumption rate of only 40-60%. “Possible ways of minimizing these losses include the development of novel, ultra-dense heat stores at moderately low temperatures, or more advanced thermal insulation [systems],” added the researchers. The group’s findings are described in the study Techno-economic analysis of solar PV power-to-heat-to-power storage and trigeneration in the residential sector,published in Applied Energy and on the Science Direct website.

Frompv magazine Germany. Interest in subsidy-free power purchase agreements (PPAs) for photovoltaic and wind power plants in Europe really took off last year – a development confirmed by an updated version of theStatus Quo: Market Parity of PV and Onshore Wind in Europereport published by German consultancy Enervis Energy Advisors. Analysts who crunched the data from 25 nations calculated a 21 GW pipeline of projects was being developed without subsidy in Europe at the end of 2019. Spain continued to lead the way, according to the Enervis report, with 4.39 GW of unsubsidized-PPA-driven projects announced last year. Italy followed, with 1.91 GW, ahead of Germany, with 1.05 GW. Demand also rose, however, in Portugal (444 MW), Denmark (338 MW) and France (158 MW) and Enervis predicted southern European markets will continue to be fertile territory for subsidy-free solar PPAs despite bureaucratic hurdles. For wind farms – on and offshore – north and north west Europe continue to be the focus. Wholesale prices Although the historic rise in wholesale electric prices in the EU halted last year – and has plunged during Covid-19 shutdowns – Enervis noted solar and wind power could be generated for up to €20/MW cheaper than market prices. With the coal withdrawal plans announced by some European nations expected to buttress the wholesale energy price in the medium term, according to Enervis, ever cheaper solar and wind projects will continue to make subsidy-free PPAs an attractive option. The updated report states the renewables business case will stand up even in the face of gas prices which fell 39% in 2019, year-on-year, and dragged down the wholesale electricity price 16% despite a 56% annual rise in the cost of CO2certificates. In terms of crowding out rival renewables technologies, instead of fossil fuels, the highest ‘cannibalization rate’ observed for solar last year was 12%, in Sicily. In Germany, onshore wind saw a 14% rate. Those rates could rise as renewables penetrate deeper into European grids, according to Enervis, which highlighted fluctuation in the price of fossil fuel-fired electricity as an unpredictable variable, which could be counterbalanced by higher CO2prices; less baseload generation; and flexible demand and storage shoring up the energy price.

Recently, the Saudi energy navigation company ACWA Power completed the Oman IBRI two phase 500MW photovoltaic project financing, and once again launched a deep cooperation with the sun power, strong joint assistance to build the largest photovoltaic power station of Oman. ACWA power pays special attention to the application of the latest technology route in this project, which requires the maximum reduction of lcoe; at the same time, it also puts forward high standard requirements for the reliability of equipment, so as to cope with the problems of Oman tropical desert climate, such as windy sand, strong wind erosion and large temperature difference. After comprehensive consideration, all customers finally choose the world's largest power 1500V series inverter SG250HX. The world's largest single unit power + high capacity ratio, with the best system cost SG250HX sets up the benchmark of the world's largest single unit power string inverter. With the same power station capacity, the number of inverters, low-voltage switchgear, cables and other equipment can be reduced. It is estimated that the initial investment cost of 100MW power station can be reduced zero point zero two Yuan / W or more. In addition, with the industry's higher volume ratio, support 6.75MW Large sub array design, PLC communication, integrated PID protection and repair functions and other advantages further reduce lcoe. Intelligent air cooling + the highest level of protection, reliable operation in high temperature and strong sand environment High temperature and strong wind sand are the strong enemies of reliable operation of the inverter. SG250HX adopts IP66 protection and C5 level anti-corrosion of the whole machine, with high sealing performance, no invasion of wind sand and water vapor, and adaptive strong corrosion environment. By adopting the industry-leading intelligent air cooling and heat dissipation technology, it can realize 50 ℃ full load without derating, reliable operation for more than 25 years, and reduce the risk of future use. Especially suitable for high temperature, strong wind and sand, strong corrosion and other extremely harsh environment. Patent IV scanning makes operation and maintenance more efficient and labor-saving The extreme environment also increases the difficulty of operation and maintenance of large-scale power stations, while the traditional inspection is time-consuming and inefficient, often suffering from "misdiagnosis" and "missed diagnosis", which is difficult to meet the requirements. As early as 2013, sungrow power took the lead in obtaining patent IV scanning technology. Through the verification of T 220V real station, one key start the whole station detection, online intelligent identification of 17 kinds of faults, and 15 minutes to obtain the health diagnosis report of 200mwp components, active operation and maintenance, simple and efficient, effectively solve the "misdiagnosis" and "missed diagnosis" problems of large-scale power ...