Hanwha SolarOne is a vertically integrated manufacturer of silicon ingots, wafers, cells and solar panels. Hanwha SolarOne offers high-quality, reliable products at competitive prices, as well as comprehensive service. Distributors, OEM manufacturers and system integrators are optimally served by Hanwha SolarOne for all projects in the field of open areas, as well as large and small roof systems

LG has 84 subsidiaries and is one of the best known companies in the world. The solar cells for the polycrystalline and monocrystalline panels are manufactured by LG itself. The frame of the LG panels also contributes to the attractive look. As standard it is made of black anodised aluminium.

Since 1 December 2011 Sanyo has been part of the Panasonic Group. This guarantees long term assurance of quality standards. HIT cells and panels exhibit an energy conversion efficiency in commercial solar products that is leading worldwide. With the intelligent combination of monocrystalline and amorphous silicon, the advantages of two technologies are united in one product.

The best way to a successful future is to actively create it. That’s why we’re investing in key business divisions. Since the company was founded, Q.CELLS has developed itself into one of the largest photovoltaics companies in the world. The focus alongside the cell business is the module and system business. There we can see the best perspectives for a successful expansion of our business activities.

Schott guarantees its quality standard with a proven quality management system certified to ISO 9001 and an environmental management system certified to ISO 14001. With crystalline solar wafers, solar cells, solar panels and a-Si thin film panels SCHOTT covers all core components of the value added chain for photovoltaic power generation.

SolarWorld AG has developed in just a few years from a trading company to a solar company with integrated solar value chain process - from raw materials to the solar wafer, the solar cell, the solar module right up to ready, high-quality solar power plants. Today, the company profits from the fact that it was early to set up the entire solar value chain: It has modern factories at all production levels to serve the solar market comprehensively. In addition, the company controls the development of solar power technology at all levels under ist own roof. The company employs about 3,300 people in ist locations in Germany, Spain, France, South Africa, Asia and USA.

Suntech Power produces industry-leading solar products for residential, commercial, industrial, and utility applications. With regional headquarters in China, Switzerland, and the United States, and gigawatt-scale manufacturing worldwide, Suntech has delivered more than 25,000,000 photovoltaic panels to over a thousand customers in more than 80 countries. Suntech's pioneering R&D creates customer-centric innovations that are driving solar to grid parity against fossil fuels. Our mission is to provide everyone with reliable access to nature's cleanest and most abundant energy source.

Trina Solar was founded in 1997. This panel supplier has very good vertical integration, with production ranging from ingots to solar modules. At the end of 2010, Trina's production volume was just under 1 GW. The products meet international quality and environmental management standards; the company is certified to ISO 9001 and ISO 14001.

Yingli Green Energy (NYSE: YGE) is a leading solar energy company and one of the world‘s first fully vertically integrated photovoltaic manufacturers. We develop, manufacture, and sell high-quality modules under the brand “Yingli Solar” to a wide range of markets, including Germany, Spain, Italy, Greece, France, South Korea, Brazil, Mexico, Chile, China and the United States.