"We are interested in developing a joint vision of energy security through constructive dialogue, but we cannot agree with projects that might be detrimental to Slovenia," Rupel told the Slovene parliament which was holding an emergency session in Ljubljana on Monday to discuss the Italian plans about the terminals.
The session was convened at the insistence of the opposition, which accused the Slovene government of what it described as a lukewarm reaction to Rome's plans.
The strongest opposition party - the Slovene Liberal Democrats (LDS) - recently called for the holding of an extraordinary parliamentary session over the Italian plans to build two Liquefied Natural Gas (LNG) terminals near the seaport of Trieste.
"Italy is resolutely going on with activities aimed at the construction of the terminals beside the Slovene border, while the Slovene government has not yet done anything to protect the Slovene geo-strategic interests," the LDS chief, Jelko Kacin, wrote in an open letter.
Rupel today said that Slovenia was willing to talk with Italy about acceptable locations for any energy plants in the northern Adriatic.
The parties within the ruling coalition have announced that they will vote against any possible radical conclusions in the parliament and that they will try to protect the Slovene national interests through diplomatic channels.