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In the 1990s, STEAG finally emancipated itself from its decades-long role as a supplier of industrial electricity and district heating in the Ruhr area. After the reunification of Germany, STEAG in Saxony-Anhalt took over Industriekraftwerk Nord from Leuna-Werke and leased it to the newly founded LEUNA-STEAG Energiegesellschaft mbH. With the foundation of STEAG Energieanlagen Sachsen Anhalt GmbH (SESA), STEAG launched its first new build project in eastern Germany at the same location. SESA also functioned as the owner of the new combined cycle gas and steam turbine power plant in Leuna. A few years later, this project was followed by a power plant to supply electricity and heat to the large-scale refinery which was then being constructed. In 1998, the takeover of Saarbergwerke AG by Ruhrkohle AG (RAG) brought power plant activities from the Saarland into the group. This integration was completed – following the complete takeover of STEAG by RAG – by the foundation of Saar Energie AG in October 2004. And STEAG also began to expand its commitments internationally: In 1999, the Termopaipa IV power plant, which was planned, financed and built by STEAG, went on line in Colombia. In 2000, construction work began on the Iskenderun power plant in southern Turkey, which commenced generating electricity in 2004. In 2006, finally, a power plant went on line in Mindanao (Philippines). The realignment of RAG, which began in 2003, and the focus on the Chemicals, Energy and Real Estate business areas again brought about changes for STEAG. At the beginning of 2005, all of RAG’s activities in the areas of coal trading, power plant construction and operation, waste disposal, and gas and district heating supply were pooled at STEAG. The energy company had thus become one of the mainstays of the RAG Group. On September 12, 2007, RAG Beteiligungs AG became Evonik Industries AG with the three business units Chemicals, Energy and Real Estate. At the same time, RAG Aktiengesellschaft emerged as an independent company from the former RAG Group. Since then, both companies have been owned by the RAG Foundation. In 2008, Evonik Industries began to position itself as a special chemicals group – energy and real estate activities were no longer regarded as core businesses.
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