Tomsic said last Wednesday that long and tough negotiations on the matter had been wrapped up a week before. The agreement is likely to be initialled on 23 March and signed in summer, Tomsic told a news conference.
Croatia is expected to decide on initialling the document by 15 March.
Parties to the document are the European Commission and Albania, Bosnia-Herzegovina, Bulgaria, Croatia, Macedonia, Montenegro, Romania, Serbia and Turkey, as well as the United Nations Mission in Kosovo (UNMIK).
The agreements create a legal framework making it possible for the countries to trade with the internal EU market in the power and gas supplies sector, being exempted from paying customs tariffs, Tomsic said.
One of the purposes of the agreement is to encourage bids of aspirants for the European Union membership.
Asked whether the agreement would impose some obligations on Croatia, Tomsic said the agreement would not create any kind of a closed community in this region.
As soon as any of the aforementioned countries joins the EU, rules of the Union will be applied in it, Tomsic said.