Hungary expects to sign an agreement with Russia on additional gas supplies of 700 million cubic meters by the end of the summer.

Hungarian Prime Minister Viktor Orban told state radio on Friday.

"Hungary will have enough gas," Orban said.

"We are negotiating with the Russians to buy an additional 700 million cubic meters of gas, this agreement can be signed in the summer, and then we will be safe," he added.

According to Gas Infrastructure Europe, Hungary's gas storage facilities are now about 50 percent full, covering 29 percent of its annual consumption.

A member of the European Union, Hungary maintains what it calls a pragmatic relationship with Moscow following Russia's invasion of Ukraine, creating tension with some EU allies seeking a tougher line.

Hungary, about 85 percent dependent on Russian gas, strongly opposes the idea of EU sanctions on Russian gas imports.

Under a 15-year agreement with Russia's Gazprom signed last year, Hungary receives 3.5 billion cubic meters of gas a year through Bulgaria and Serbia and another 1 billion cubic meters through a pipeline from Austria.

As reported, Hungary voted against the EU's joint decision to reduce gas consumption by 15%.