Kazanorgsintez is preparing a lawsuit against Siemens Energy for the return of the unused part of the ₽9.1 billion advance on the construction project for the chemical plant's 250 MW combined-cycle plant. Under the contract, the CCGT-250 was to be commissioned on a turnkey basis by March 2023. However, in July 2022, Siemens backed out of its obligations due to the sanctions imposed by the EU.