"It looks like we don't have shale gas, we fought very hard for something that we do not have," Ponta told television channel Antena 3, according to Reuters. "I cannot tell you more than this, but I don't think we fought for something that existed."
A 2013 report from the U.S. Energy Information Administration projected that Romania held the fifth-largest unproved wet shale gas estimated reserves in Europe (trailing Russia, Poland, France and Ukraine).
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Poland, which was second only to Russia with 148 trillion cubic feet of initially estimated shale gas reserves, has also seen a series of disappointments. Several, in fact: Before Chevron pulled out, Exxon Mobil, Total and Marathon Oil also stopped similar exploration in Poland over three years, according to Reuters.
In an October article on the European shale industry, energy-focused site Oilprice.com said that Poland "represents the European Union's best hope at breaking Russia's grip over natural gas supplies."
France, meanwhile, also boasts promising estimated reserves, but it has a firm ban on fracking.