Electricity supply for customers from business category is conducted by suppliers within HEP Group:
- HEP Opskrba (HEP Supply) – as part of market service
- HEP Operator distribucijskog sustava (HEP ODS) – as a guaranteed service within public service (service available to end customers, who are left without the supplier under certain conditions)
Apart from the contract about electricity supply made with the supplier of electricity, the end customer must make a contract about using the network with HOPS
(Croatian TSO) or with HEP Operator distribucijskog sustava (HEP ODS), depending on the connection voltage.