Inter RAO completed modernization of three power units with a total capacity of 1,390 MW. Capacity of power unit No. 1 at Permskaya TPP was increased from 820 MW to 850 MW. Capacity of power unit No. 2 at Kostromskaya GRES was increased from 300 MW to 330 MW, and of power unit No. 2 at Gusinoozerskaya GRES from 190 MW to 210 MW. Works performed made it possible to significantly reduce specific fuel consumption and extend equipment life by at least 30 years.