Oleg Kozachuk was born on July 18, 1980 in the city of Kazatin, in the Vinnytsia region of Ukraine. In 2002 he graduated from Vinnytsia National Technical University with a degree in electrical engineering with honors. Subsequently, he received a master's degree in public administration and administration from the L. Yuzkov Khmelnytsk University of Management and Law. He also graduated from the Vasyl Stus, Donetsk National University, majoring in Business Administration (MBA) with honors.
The beginning of Oleg Kozachuk's career is closely connected with Khmelnytskoblenergo. After graduating from high school, he worked as an inspector of energy sales of the Letichevsky district power grid. Later he became the head of the Letichevsky RES section. From May 2003, Oleg held the position of Head of Marketing and Energy Sales of Letichevsky RES of Khmelnytskoblenergo. Two years later, he headed the quality management department.
Between 2007 and 2010 Oleg was engaged in projects to optimize business processes in various companies in the energy and investment spheres of Ukraine, where he developed and implemented automated enterprise management systems, in particular ERP systems, and was engaged in management consulting.
From 2011 to 2014, European Development Technologies, which was founded by Mr. Kozachuk, was engaged in projects in the field of energy efficiency, energy saving, as well as the development and support of renewable energy generation.
In 2013-2015 Mr. Kozachuk was involved with public and expert activities in energy sector. The focus of his activities during this period is energy efficiency and renewables. Oleg headed the public organisation Association for Energy Efficiency and Energy Saving. Since 2014 Oleg has been the Chairman of the Public Council at the State Agency for Energy Efficiency and Energy Saving of Ukraine, a member of the Group "Resuscitation Reform Package", also known as “Reanimation Package of Reforms” (RPR).
In 2015, Kozachuk returned to work at Khmelnytskoblenergo, first as Deputy Director for Marketing and Sales of Khmelnytsky MREM, then as First Deputy General Director with a combined role of Director of Marketing and Energy Sales at the same time.
In March 2016, he was appointed Acting General Director of Khmelnytskoblenergo, as well as the voting Director of the Wholesale Electricity Market Council.
In 2020, thanks to his authority and experience in the energy market, Oleg was elected a member of the board of a public organisation uniting more than two thirds of the country's energy distribution companies, Smart Grids of Ukraine.
In partnership with Korean and American colleagues, he implemented two pilot Smart Grid projects in the Khmelnytsky region.
In 2018, by the Decree of the President of Ukraine, Mr. Kozachuk was awarded the title of "Honored Power Engineer of Ukraine".
Oleg is married and has a daughter. He is interested in biographical films (his favorite film, The Dark Ages, is about Winston Churchill), and reading management and teamwork literature in the fields of sociology and philosophy (such as Harari's Sapiens). Among hobbies, he enjoys playing table tennis.