Polycrystalline silicon production

Fields of polycrystalline silicon application Polycrystalline silicon – photovoltaics basisPolycrystalline silicon – electronics basis Monocrystalline siliconMulticrystalline silicon Photovoltaic inverter Solar modules Monocrystalline silicon Usage of 11N purity silicon in photovoltaic inverters production will increase their efficiency coefficient up to 23%. Integrated microcircuits Transistors and diodes for different purposes Processors Data storage devices Digital, logical and analog circuits 95% of semiconductor devices production in the world is based on electronic grade polycrystalline silicon Specialists usually distinguish between solar grade polycrystalline silicon (SoG) with purity of 4N-8N ( %) and electronic grade polycrystalline silicon (EG) with purity of 9N-11N ( %) % capacity of the plant (3 000 tons) will be directed to production of electron grade polysilicon with purity of 11N ( %).

The Main Production Technology «Siemens process» is the most common technology in the world for polycrystalline silicon industrial production. Distribution of global volume of polycrystalline silicon on technologies JSC «Giredmet» offers modernized technology, which guarantees the best production figures for materials of “electronic” quality. At the heart of the “Siemens process” there is a method of hydrogen reduction of silicon from trichlorosilane. Distinctive feature of the offered technology is application of high- performance equipment and recirculating contours with the purpose of maximum utilization of initial products in order to receive the target product. Main technological stages Synthesis of hydrogen chloride of hydrogen and chlorine. Synthesis of trichlorosilane by hydrochlorination of silicon. Dust cleaning of gas-vapor mixture after synthesis of trichlorosilane. Separation and cleaning of chlorosilanes (rectification). Hydrogen reduction of silicon using gas-vapor mixture: trichlorosilane – hydrogen. Hydrogenation of silicon tetrachloride to trichlorosilane using gas-vapor mixture: silicon tetrachloride – hydrogen. Condensation and regeneration of gas-vapor mixture which generated during synthesis of trichlorosilane and during hydrogen reduction and hydrogenation. Neutralization and reclaiming of solid, liquid and gaseous production wastes. Quality control and certification of initial raw materials, intermediate and finished products. Preparation of polycrystalline silicon for sale as marketable products (chipping, packing, etc.). 3 Trichlorosilane Siemens process Monosilane Siemens process Other technologies

* Источник: компания SiTec Прогноз развития мирового рынка поликремния до 2020 г., тыс. тонн.* Прогноз развития рынка поликремния 4

Outlook for worldwide polysilicon market grows in , thousand tons* POLYCRYSTALLINE SILICON CONSUMPTION Total pessimistic scenario optimistic scenario Polysilicon SoG pessimistic scenario optimistic scenario Polysilicon EG pessimistic scenario optimistic scenario *Source: Research.Techart 5 SoG – “solar” grade polysilicon EG – “electron” grade polysilicon 5

Project summary 6 PRODUCTION FIGURES Production capacity1 000 tons per year Build-up area11,7 hectares Energy20 MW Personnel450 ECONOMIC FIGURES Volume of investments million EUR IRR % NPV million EUR PI 1,2-1,6 PP years 6-7 years

JSC «The State Scientific, Research and Design Institute for Rare Industry “GIREDMET” , Moscow, B.Tolmachevsky lane, 5 building1 phone: +7 (495) WEB site: 7 The main project developer

According to projects developed by Institute “Giredmet” were constructed 22 chemico-metallurgical and ore-dressing plants as well as more than 100 plants manufacturing materials assuring development of nuclear and solar energetics, electronics, aeronautical and space-rocket technology, ship-building, instrumentation technology, modern communication means and systems, navigation, SHF, infrared and superconducting and medical equipment etc. Executed projects: 1.Development of project of construction of 1500 t/year polycrystalline silicon plant in Ras Laffar, Qatar; 2.Development of project of construction of 1260 t/year polycrystalline silicon plant in Leshan, province Sichuan, PR of China; 3.Development of project of construction of 1500 t/year polycrystalline silicon plant in Yichang, province Hubei, PR of China 4.Development of project of construction of 1500 t/year polycrystalline silicon plant in Huhhot, PR of China. 8 The main project developer

In Russia Federal State unitary enterprise “Mining and Chemical Combine» JSC « Krasnoyarsk Machine-Building Plant» LLC «Scientific and production association «Mostovik» JSC «Podolsk Chemical and metallurgical plant» LLC «Russian Silicon» LLC «Siemens» JSC «Uralchimmash» In the world Centrotherm (Germany) GT Solar (USA) AEG Power Solutions (Germany) Beijing KBD Science & Technology Development Co., Ltd (China) Carbone Lorraine Composants (France) Inner Mongolia Shen Zhou Silicon Industry Co., Ltd (China) Liaoning-China Jinhua Smelting Co., Ltd. (China) Qatar Foundation for Education, Science and Community Development (Qatar) Sichuan Xinguang Silicon-Tech Co., Ltd (China) Yichang CSG Silicon Material Co. Ltd. (China) 9 Our partners