The power plant construction sector has been covered by Flagsol GmbH, based in Cologne, Germany. This company is a joint venture between Solar Millennium AG and Ferrostaal AG. Solar Millennium holds 74.9 percent, Ferrostaal owns 25.1 percent of the joint venture. The declared objective of the partners in this joint venture is the establishment of the joint company as the leading provider of solar thermal power plants worldwide.
Flagsol focuses on parabolic trough power plants. With their joint company, Solar Millennium and Ferrostaal have combined their competencies for the development and construction of large-scale solar power plants. As a project developer and technology provider, Solar Millennium has technology which has been implemented commercially as well as long standing experience in the development of solar thermal power plants. As a world-renowned plant construction expert and general contractor, Ferrostaal has the financial competence to implement large-scale power plant projects.