"The implementation of the Nord Stream 2 project may lead to losses of about 2.5-3-percent of GDP due to a decrease in the export of services," the Ukrainian Finance Ministry said.
The ministry also believes that the implementation of the project will strengthen the role of Germany as a "gas hub" for consumers in Western and Central Europe.
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The project has been welcomed by some countries in Europe, such as Germany and Austria, and opposed by others, including Ukraine, which may suffer transit revenue drops if Nord Stream 2 becomes operational.
Russian President Vladimir Putin said in May that Russia will not halt the transit of gas through Ukraine if this remains cost-effective.