1998
Company HESIA, spol. s r.o. was established on 22 June 1998 by a record to the Commercial Register of the District Court Bratislava 1. The first company seat was at Lamačská cesta 1, in Bratislava. The subject of company´s activity were mainly overhauls and repairs of all types of power transformers and chokes without limitation of their capacity and rated voltage.
1999
In 1999 the company bought a filtration device for the treatment of transformer oil VH121. Two other filtration devices for the treatment of transformer oil VH120 were also modernised.
2001
In 2001 company HESIA purchased a whole portfolio of diagnostic instruments for the measurement of power transformers including the automatic device for measurement of insulations from the company AVO INTERNATIONAL LTD, USD.
2009
On 4 June 2009 the company moved to its own new premises at Agátová Street 22 in Bratislava. In its new seat the company works with one of the most advanced examination towers in the territory of the Slovak Republic.
2010
Company HEASIA successfully finished its high-voltage laboratory.
2015
Company HESIA successfully launched its activity in the United Kingdom.
2016
Company HESIA successfully launched its activity in the Netherlands.
