Solar Millennium AG is a German company that specializes in the development of solar renewable projects. The company was founded in 1998 and has since then become one of the leading companies in the solar industry. Solar Millennium AG is headquartered in Erlangen, Germany and has several subsidiaries and project development offices around the world.

The company's main focus is on the development of Concentrated Solar Power (CSP) projects. CSP is a technology that uses mirrors or lenses to concentrate sunlight onto a small area, which then heats up a fluid that is used to generate electricity. CSP is considered to be one of the most promising renewable energy technologies because it can provide electricity even when the sun is not shining, by storing the heat in a thermal storage system.

Solar Millennium AG has developed several CSP projects around the world, including the Andasol 1, 2 and 3 projects in Spain, the Blythe Solar Power Project in California, and the Desertec project in North Africa. The Andasol projects are some of the largest CSP projects in the world, with a total capacity of 600 MW. The Blythe Solar Power Project is also a large-scale project, with a capacity of 1,000 MW.

In addition to CSP, Solar Millennium AG is also involved in the development of photovoltaic (PV) projects. PV is a technology that converts sunlight directly into electricity using solar cells. The company has developed several PV projects in Germany and Spain, including the Solarpark Meuro project in Germany, which has a capacity of 53 MW.

Solar Millennium AG is committed to sustainability and environmental protection. The company's projects are designed to minimize their impact on the environment and to contribute to the reduction of greenhouse gas emissions. The company also supports research and development of new renewable energy technologies.

Solar Millennium AG has faced some challenges in recent years. The company's financial situation has been affected by the global economic crisis and the changes in the regulatory framework for renewable energy in Germany. In 2012, the company filed for insolvency and was subsequently acquired by Solarhybrid AG, another German renewable energy company.

Despite these challenges, Solar Millennium AG remains a leading player in the solar industry. The company's expertise in CSP and PV project development, as well as its commitment to sustainability, make it a valuable partner for governments and companies around the world that are looking to transition to a more sustainable energy system.