Spain’s So1Focus announced in 2008 that the initial stages of the world’s first large-scale CPV solar power facility had been completed. The facility is owned by the Institute of Concentrating Photovoltaic Systems (ISFOC). The first phase of the facility developed by So1Focus 200kw has been connected to the local grid. The second phase was completed in August 2008, setting a CPV capacity of 500kw. The company’s CPV technology uses imaging and non-imaging reflective optics to make sunlight Concentrate 500 times on small, high-efficiency solar cells.
Sol Focus announced in 2008 the construction of the first commercial solar project in Greece using CPV technology. The development uses the Sol Focus 1100S system to generate 1.6MW of electricity. The newly developed Sol Focus 1100S system enables solar panels to achieve a photoelectric conversion efficiency of 25%, the highest energy efficiency of a PV system to date. The facility was constructed in the spring of 2009 and generates electricity during the summer. In the first year of power generation, the power generated by the system can meet the electricity needs of a small town with about 2,500 inhabitants, which can be equivalent to reducing CO2 emissions by 2,800t. Sol Focus CPV is designed with a reflective optical system to concentrate sunlight 500 times into small, on high-efficiency solar cells. Compared with traditional photovoltaic panels, Sol Focus 11005 uses 1/1000 the active, expensive solar cell material meter. In addition, the cells used in the Sol Focus CPV system are more than twice as efficient as conventional silicon cells. The Sol Focus CPV system integrates CPV panels with its advanced tracking system that directs sunlight onto the solar array 24/7. Sol Focus is also building a 10MW project using the same solar technology as EMPE Solar, the largest CPV technology development in Europe. Sol Focus and Samaras announced in 2009 an expansion of the 1.6MW solar CPV project built in Greece to 10MW. The two parties stated that Sol Focus 1100s systems will be developed to generate 10MW of electricity at various locations in Greece.
In terms of CPV material development, Germany’s Fraunhofer Institute for Solar Energy Systems (ISE) announced in 2009 that the photoelectric conversion efficiency of the CPV system has reached 41.1%. The test module used, the sunlight is concentrated and concentrated to more than 5mm2 by a factor of 454 times. On the junction solar cell, the multi-junction solar cell is composed of gallium indium phosphide and gallium indium arsenide deposited on the germanium base layer (Ga1nP/Ga1nAs/Ge). Compared to conventional solar cells, the semiconductors in such cells do not have the same lattice constant (the distance between atoms in the crystalline structure), which makes it difficult to grow semiconductor layers with high crystalline quality because materials with different lattice constants Dislocations and other crystalline defects can occur at the interface, and researchers at the Fraunhofer Institute for Solar Energy Systems have solved this obstacle by overcoming the defect in the electrically inactive solar cell region. For this reason, the active region of the solar cell can still remain relatively defect-free, and the photoelectric conversion efficiency can reach 40.4% even under 880 times the sunlight. This is an excellent example of how to control crystalline defects in semiconductors, enabling a technological breakthrough.
On March 10, 2009, Amonix Corporation of the United States launched Amonix 7700, a new CPV system product, with a unit capacity of 53kW. Amonix 7700 is designed to be applied to the scale of public systems and is the first technology that can convert 1/4 of solar energy into usable electricity. A CPV system. The Amonix 7700 utilizes a multi-bonded solar cell consisting of 7 proprietary Mega Modules. The combination uses Amonix’s patented dual-axis tracker, which enables the Amonix 7700 to generate more than 40% more energy than conventional fixed solar panels in sunny climates. It is said that the Amonix 7700 is currently the most powerful in the world. of high-concentration photovoltaic power generators.
When the competition to create renewable energy is becoming more and more fierce, the solar energy industry has focused its attention on the new technology “CPV solar energy”, and its unique advantages of high efficiency and low cost have become a bright spot in the photovoltaic industry that cannot be underestimated. At the same time, it hopes to produce electricity with scale effect through this technology. As of the beginning of March 2010, the global installed capacity of high-power concentrating solar cell systems has reached 19MW, and the planned installation projects have reached 950MW. Spain and the United States are still leading countries. According to authoritative institutions, the market size of concentrating solar cells will reach 6GW by 2020. Although some experts predict that by 2010, the cost of CPV technology will be the same as that of traditional PV technology, but if CPV is not applied on a large scale, the cost will be reduced. will become a fantasy. Up to now, the world’s investment in CPV is only 1 billion US dollars, and the investment projects are small in scale and narrow in scope. Therefore, both industry insiders and major enterprises hope that the government will increase investment in this field.