About Us

Founded in 1955, ALKE is one of Turkey’s oldest and most reputable construction companies with an excellent track record of projects in many different parts of the world.  Today ALKE is an important player in the international construction arena, having completed important projects in various countries including Kazakhstan, Russia, Azerbaijan, Oman, Romania, Maldives, Ghana… Some of the recent signature projects include Melen Water Transmission Project (the first intercontinental underwater tunnel in the world), Ambarli Waste Water Treatment Plant (one of the largest waste water treatment plants in Europe), and Astana Olympic Stadium.

Ostor Projektenwicklungs GmbH is a company with vast experience in engineering, design and project management.

ALKE Environment und Energy GmbH is a German construction company formed by ALKE Construction Inc. (Turkey) and Ostor Projektenwicklungs GmbH (Germany).   The company aims at continuing and growing the excellent track records of both companies in infrastructure projects all over the world.  Main areas of focus include waste water treatment plants, drinking water treatment plants, solid waste disposal projects, pipelines and distribution networks.  Offering turnkey solutions to clients worldwide, ALKE-EE GmbH will create added value and benefits to  the projejcts it’s involved in.