In February 1996, the Energy Systems Department located at TUBITAK Marmara Research Center became jointly affiliated with the Environmental Engineering Department, and together the two departments formed the Energy Systems and Environmental Research Institute (ESERI). Since this date, ESERI's two strategic business units - Energy Technologies and Environmental Technologies - completed several important projects, developed their infrastructure, and expanded their knowledge base, experience, and networks on an international level. On October 3, 2004, in accordance with the decision of TUBITAK's Science Committee, the two strategic business units were separated, and the Energy Technologies strategic business unit became the Energy Institute (EI).
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