HEP Group's HEP-Trgovina d.o.o.
owns the following daughter companies which carry out their business operations abroad:
HEP Proizvodnja d.o.o
. owns a daughter company in Bosnia and Herzegovina called CS Buško blato d.o.o.
NE Krško d.o.o.
, a nuclear power plant co-owned by HEP d.d and GEN Energija (50%:50%), operates in the Republic of Slovenia.