The new U.S. sanctions could also impact European Union efforts to further diversify the energy sector, particularly in the Baltic.
The EU imposed sanctions on Russian Federation three years ago after it annexed Ukraine's Crimean Peninsula, and refuses to recognize Moscow's authority there.
The EU measures involve a freeze on their assets and travel bans.
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The EU said that setting up an independent power supply for Crimea supports its "separation from Ukraine" and that "gas turbines are a substantial element in the development of new power plants".
Technopromexport, as well as a limited liability company of the same name (OOO VO TPE) were added to the list for the involvement in the purchase and installation of the gas turbines in Crimea.
This image taken on June 14, 2016 shows the new headquarters of the German engineering giant Siemens in Munich, Germany.
In early July, Siemens created a task force team to investigate reports about the alleged transfer of turbines produced by Siemens Gas Turbines Technologies, a joint venture with the Russian Power Machines company, to the Crimean peninsula.
Other EU measures in place in response to the Ukraine crisis include economic sanctions targeting specific sectors of the Russian economy, now in place until 31 January 2018; and restrictive measures in response to the illegal annexation of Crimea and Sevastopol, limited to the territory of Crimea and Sevastopol, now in place until 23 June 2018.