Enel inaugurates first dry ash removal system in a Russian power plant at Reftinskaya GRES

Published on Tuesday, 29 September 2015

  • Dry ash removal system (DARS) improves environmental performance of Reftinskaya GRES
  • New method of transport and storage of waste enables utilisation of nearly all ash for industrial purposes
  • Enel Russia invested over 12.5 billion roubles in the project


Reftinsky, September 29th, 2015 — Enel Russia has today inaugurated the Dry Ash Removal System at Reftinskaya GRES one of its most significant environmental projects — and the only one of its kind in the Russian power generation sector. Overall, Enel Russia invested over 12.5 billion roubles in the project.

“The construction of the Dry Ash Removal System is an important project showcasing Enel Russia’s commitment to drive sustainability into our business model and corporate strategy. We are very happy to improve step-by-step the environmental performance of the Reftinskaya power plant, benefitting present and future generations in the regions where we operate”

– Carlo Palasciano Villamagna, Enel Russia General Manager

For the first time in Russia, the traditional hydraulic treatment of the ash produced by a coal plant as a waste material, has been replaced by the new, dry method of transportation and storage. This new method will allow increased industrial use of ash: as long as it remains dry, it can be used in road construction, building materials, agriculture etc. The new Dry Ash Removal System is connected to the railway, which makes it possible to ship the dry ash to clients both by rail and road. DARS potentially allows the shipping to clients of all of the ash produced by the power plant, namely up to five million tonnes per year.

All ash that is not immediately requested by clients, is transported by a 4.5 km-long closed pipe conveyor belt to the ash lagoon, where ash stacks are levelled and compressed, preventing dry ash from flying away. Finally, a layer of loam is applied to the stack surface, and green grass is seeded.

The dry ash method enables significant reduction of water usage and the volume of stored ash, making it possible to keep using the existing Ash Lagoon N2 of Reftinskaya GRES for the next 35 years, preserving new land plots and saving hundreds of hectares of forest from being cut down. The DARS project of Reftinskaya GRES was carried out within the framework of the Environmental Agreement that was signed by Enel Russia and the Government of the Sverdlovsk Region at the INNOPROM industrial exhibition in 2011. Earlier in 2015 Enel Russia announced the completion of the 99.9%-efficient fabric filters at three out of ten power units of Reftinskaya GRES, which are also part of the Environmental Agreement.

An Enel Group subsidiary, PJSC Enel Russia operates the following power plants: Konakovskaya GRES, Nevinnomysskaya GRES, Sredneuralskaya GRES and Reftinskaya GRES. The company’s total gross installed electrical capacity is 9,428.7 MW (equivalent to 8,878.4 MW net installed capacity) and thermal capacity is 2.382 Gcal/h. PJSC Enel Russia’s authorised capital is 35,371,898,370 roubles, which is divided into ordinary shares with a par value of 1 rouble. The Enel Investment Holding B.V. share in the company’s authorised capital is 56.43%, PFR Partners Fund I Limited’s share is 19.03%, Prosperity Capital Management Limited’s share is 8.23%, VTB Bank’s share is 3.87% and other minority shareholders’ share is 12.44%. PJSC Enel Russia shares are listed in Level 1 MICEX quotation list. The company was established in Yekaterinburg on October 27th, 2004 as OJSC OGK-5. On July 7th, 2009 by the resolution of Annual General Shareholders’ Meeting the company was renamed OJSC Enel OGK-5 and on August 8th, 2014 the Federal Tax Service registered the new version of the company’s charter with the name OJSC Enel Russia. On June 25th, 2015 the company changed its legal type and was renamed PJSC Enel Russia.