Tatneft plans to spend ₽91.2 billion to build a terephthalic acid plant at its TANECO refinery. This plant will supply acid to Ecopat, which the oil company acquired in June 2021. Implementation of the project is scheduled for 10 years. At present, a business plan and financial model of the project have been developed, land plots for construction have been identified, documentation is being processed and the main parameters of the project are being agreed upon.