SHARE OF COMPANY'S BRANCHES IN ELECTRIC POWER TRANSMISSION MARKET

Period: 2015 Q4

Name % of grid output

Saratov Distribution Grids, a branch of IDGC of Volga, PJSC Grid output, Saratov Distribution Grids branch 91.71% including Saratov City Electric Network Enterprise, CJSC 22.15% ZAO Independent Electric Grid Company 3.03% Oblkommunenergo, JSC 15.54% Privolzhsk Railways, a branch of Russian Railways, JSC 1.09% Energosbyt South Eastern Railways, a branch of Russian Railways, JSC 0.86% OOO Promenergo 0.78% OAO Saratovstroysteklo 0.04% OAO Volskiy Mechanical Plant 0.01% OAO Saratovskie oboi 0.01% OAO Integral 0.01% ZAO Zorinskoe 0.06% OOO SPP Retail 0.17% OOO Investment Company MEGA 0.02% Municipal Unitary Production Enterprise (MUPP) 0.050% “Saratovgorelektrotrans (urban electric transport facilities)” OOO Engelsskaya Industrial Company 0.03% OOO Eltreit 1.75% ZAO Metallist 0.08% Federal State Unitary Enterprise (FGUP) “NPP Almaz” 0.03% MUP Municipal Unitary Enterprise Housing and Public Utility 0.21% Services, Restricted Access Administrative Unit Svetliy Gazpromenergo, LLC 0.32% OOO Auto Transport Company No. 1 0.05% ОАО Sergo Ordzhonikidze's Plant 0.02% OAO Apatit (renamed on May 01, 2014, previously named ZAO 0.04% Balakovskie Mineral Fertilizers) OOO St. Petersburg Construction Company (previously named 0.07% OOO Trade and Construction Department Engelsstroy) OOO Gruppa Sever 0.02% OOO BalEnergoSet 0.00% OOO Regional Energy Company 0.02% OOO Mechanization and Capital Construction Department 0.003% ZAO Scientific Research Institute of Chemical Current 0.03% Sources–2 OAO BetElTrans 0.00% OOO Energogaz–Grupp 0.66% OOO Electric Grid Company 0.17% OOO Volga Energy Company 0.10% OAO Zavod Armi 0.001% OAO Oboronenergo (previously named FGUP 28 Electric Grid of the Navy of the Ministry of Defence of the Russian 1.26% Federation) OOO Tranzit–2000 0.04% Federal Government Agency Correctional Institution–33, Department of the Federal Penitentiary Service for the Saratov 0.003% Region OOO Balashovskaya Distribution Company 0.37% OOO SMYuREK 0.32% OOO OrgTransGaz 0.03% OOO Elektroset 0.007% OAO Prommash Plant 0.01% OOO Transenergo 0.000% OOO Territorial Electric Grid Company 0.03% OOO LUKOIL–ENERGOSETI 0.17% OOO Potok 0.02% OOO Ryazan Power Sales Company 0.13% OOO SOPOT ROPT 0.21% OOO EnergoTrans (previously named TZS) 0.06% OOO TransEnergo (previously named Saratov Scientific 0.05% Research Engineering Institute) OOO Saratov Power Grid Company 0.25% OOO ElektroSfera 0.06% OOO Sintel 0.06% OOO Engels Instrument Making Association Signal 0.02% OOO PEK 0.88% OOO Energy Construction Company 2.61% OOO Volga Electric Power Grid Company 0.0026% OOO Regional Distribution Company 2.07% OAO UNITED POWER COMPANY (OAO OEK) 0.05% OOO Electric Grid Company (OOO ESK) 0.35% OOO Electric Grid Company VOLGA (OOO ESK VOLGA) 0.08% MUP Municipal Unitary Enterprise Housing and Public Utility Services, Restricted Access Administrative Unit Mikhaylovskiy 0.04% settlement OOO Siberia Service Company 0.01% Federal Government Agency Correctional Institution–11, Department of the Federal Penitentiary Service for the Saratov 0.003% Region OOO Transenergo (Agreement No. 1591–000645) 0.00% OOO BALAKOVSKAYA ELECTRIC GRID COMPANY 0.40% Ulyanovsk Distribution Grids, a branch of IDGC of Volga, PJSC Grid output, Ulyanovsk Distribution Grids branch 89.43% including ZAO Aviastar United Power Saving Enterprise 13.01% Municipal Unitary Enterprise Ulyanovsk City Electric Networks 17.59% (MUP UlGES) State Scientific Center – Research Institute of Atomic 0.52% Reactors, JSC OAO Utyos 0.21% OAO Kometa 0.28% ZAO YaVVA (TSO) 0.02% JSC Aviastar-SP 0.17% OOO Inzenskiye Regional Electric Grids 0.28% OAO Oboronenergo 0.24% OOO Magistral 1.64% Russian Railways, JSC 7.18% ZAO Aviastar United Power Saving Enterprise 0.52% OOO Gazpromenergo 0.10% Federal State Budgetary Educational Institution of Higher Professional Education Ulyanovsk Civil Aviation Academy 0.08% (Institute) OOO Stroyenergoremont 0.11% OOO AVIS 0.04% MUP Water and Waste Water Services Ulyanovskvodokanal 0.00% OOO Energoholding 0.22% OOO Energoset 0.07% OOO INZA-SERVIS 0.45% OOO Volga Electric Power Grids 0.01% OOO Kompozit-Energo 0.15% OOO Energoholding-N 0.21% Correctional Institution–8, Department of the Federal 0.21% Penitentiary Service OOO SK SPM-Energo 0.11% OOO Energo-Alyans 0.02% OOO ONIK 0.00% OOO Distribution Electric Grids 0.33% OOO Merkuriy 0.00% OOO United Electric Grids 0.04% Ulyanovsk Network Company, JSC 8.75% OOO Barysh Grids 0.02% OOO Regional Distribution Grid Company 0.23% OOO Road Building Company 0.03% OOO EnergoSoyuz 0.17% OOO Transpolar Construction Company 0.03% OOO SimbirskMuka 0.05% OOO Distribution Grid Company Park 0.00% OOO Main Step-Down Substation 2.08% Samara Distribution Grids, a branch of IDGC of Volga, PJSC Grid output, Samara Distribution Grids branch 94.98% including OOO AVIASPETsMONTAZh 0.073% OAO AVTOVAZ 0.75% OAO VOLGOTsEMMASh 0.07% OOO Volzhskiy Produkt 0.03% OOO VET 0.02% OOO DMT 0.02% OOO Housing and Utilities Administration -110 A 0.04% OOO Miniature Bearings Factory 0.14% OOO Zasamarskaya Grid Company 0.04% OAO Kurumoch International Airport 0.12% KUZNETSOV, JSC 0.09% BIAXPLEN LTD 0.01% Facilities of OOO Vertikal 0.01% ZAO Kvant 3.09% OOO Samaraavtotrans-2000 0.01% OAO Samara Plant Ekran 0.01% AO Samara Ceramic Materials Production Complex 0.01% MP Samara City District Samara Subway 0.01% ZAO Samara's Experimental Plant for Aluminum Alloys 0.00% OOO Setevik 0.00% AO Samara Plant of Electric Installation Products 0.00% OAO StroyDom 0.00% South Ural Power Supply Directorate, a branch of Russian 0.01% Railways, JSC AO Maintenance and Repair Department, Samarskiy Branch 0.05% OOO El-Tranzit Plus 0.21% OOO Ural Energy Union 0.14% OOO Energobytobsluzhivanie 0.16% OOO Energozavod 0.09% OAO Oboronenergo 0.32% OAO Tarasov's Plant 0.00% OOO Gorniy KhOLOD 0.00% OOO TransneftElektrosetServis 1.54% OOO Energetik 0.03% OOO Solli-Energo 0.14% ZAO Construction Energy and Communication 0.26% OAO Pokhvistnevoenergo 0.14% OAO Samara Bearing Plant 0.00% ZAO Alkoa SMZ 0.00% OAO PK Avtokomponent Syzran 0.05% OOO Samara Business Center 0.01% OOO STROMMASHINA 0.02% AO Space Rocket Center Progress 0.00% OAO Salyut 0.19% ZAO Electric Grid–Volga 0.58% AO TOGLIATTISYNTEZ 1.87% OOO Volga Grid Company 0.08% OOO Business-Info 0.01% ZAO Samara Cable Company 0.04% OOO AVTOGRAD-VODOKANAL 0.69% OOO GRID COMPANY 0.03% OOO Stavropol Electric Grid 0.02% OOO Dolina-Tsentr-S 0.02% ZAO SAMARA CITY ELECTRIC GRIDS 0.00% OOO Spetsavtomatika 0.09% ZAO Samara Grid Company for facilities of AO Syzran 1.20% Hydraulic Power Plant AO Tyazhmash 0.18% OOO Energo 0.40% OOO Energo-Tsentr 0.00% OA 1253 Central Repair Depot for Radar Location Military 0.05% Equipment ZAO Alkoa SMZ 0.35% OOO TolyattiSpirtProm 0.00% OOO Gazprom energo (Saratov Branch) 0.00% OAO Tarasov Works Inc. 0.41% Kuybyshev Power Supply Directorate, business unit of 3.01% Transenergo, a branch of Russian Railways, JSC OOO Regional Electric Power Grid 0.21% AO Samaraneftegaz 1.26% ZAO Samara Grid Company 18.74% FKP Samara Plant Kommunar 0.08% ZAO Samara Grid Company for facilities of ZAO Samara 7.29% Hydraulic Power Plant OAO SAMARA TRANSFORMER 0.01% OOO Srednevolzhskaya Gaz Company 0.00% OOO TolyattiSpirtProm 0.00% OOO Energo-Tsentr 0.54% OA 1253 Central Repair Depot for Radar Location Military 0.00% Equipment OAO Samara Bearing Plant 0.66% OOO Stavropol Electric Grid 0.00% AO Space Rocket Center Progress 0.00% Penzaenergo, a branch of IDGC of Volga, PJSC Grid output, Penzaenergo branch 91.79% including ZAO Penza Gorelektroset 20.86% South Ural Power Supply Directorate, business unit of 1.22% Transenergo, a branch of Russian Railways, JSC PTPA JSC 2.47% OAO Power Supply Enterprise 1.64% OAO Penzkompressormash 0.83% OAO ZIF-PLYUS 0.04% Federal Government Agency Correctional Institution No. 5 0.16% OOO Penzagazkomplekt 0.08% OOO Biokorenergo 0.17% ZAO Medstroymontazh 0.05% OOO Surskenergo 0.12% MP Gorelektroset, Zarechniy 2.14% FGUP Protsenko's Production Association Start 3.01% OOO Regional Distribution Grid Company 3.20% Transneft Electric Network Service, LLC (fee fixed on February 0.74% 25, 2014) OOO Grid Company 10.43% ZAO Belinskselmash 0.05% OOO Match Factory Pobeda 0.00% OAO Penzadieselmash 0.64% Kuybyshev Power Supply Directorate, business unit of 5.12% Transenergo, a branch of Russian Railways, JSC MUP Gorelektroset, Kuznetsk 2.56% OJSC BIOSINTEZ 0.02% Federal State Unitary Enterprise (FGUP) “State Corporation for 0.04% Air Traffic Management” OOO Trade Center Korona 0.02% Individual Entrepreneur Myazhitov 0.02% ZAO Penzaoblavtotekhobsluzhivanie 0.01% OAO VolgaUralTrans 0.02% OAO Gorodishche District Electric and Heat Power Grid 0.43% Enterprise ZAO Penza High-Tech Plant 0.22% OAO Oboronenergo 0.70% OOO Production and Commercial Company Energetik-2001 0.61% Mordovenergo, a branch of IDGC of Volga, PJSC Grid output, Mordovenergo branch 90.28% including Technical Firm WATT, CJSC, Contract No. 09-08203 21.25% OAO Mordovelektroteploset 5.38% OOO Life Support Systems RM 3.84% OOO Elektroteploset 3.31% Kuybyshev Power Supply Directorate, business unit of 1.83% Transenergo, a branch of Russian Railways, JSC OOO Energolin 1.68% OOO Regional Distribution Grid Company 1.65% OOO Multifunctional Construction Company 1.35% FKP Saransk Mechanical Plant 1.04% Municipal Enterprise of Saransk City District Gorsvet 0.95% OOO Teplolyuks-M 0.31% OOO DSK-Energo 0.18% Gorky Power Supply Directorate, business unit of 0.15% Transenergo, a branch of Russian Railways, JSC Municipal Enterprise of the Lyambirskiy District of the Republic of Mordovia Municipal Unitary Enterprise Housing 0.12% and Public Utility Services Elokhovskoe OOO Remstroymash 0.12% OAO Oboronenergo 0.10% OOO Production Firm Zhilkommunstroy 0.08% OAO Biokhimik 0.00% OOO VKM-Steel, grid 0.00% Chuvashenergo, a branch of IDGC of Volga, PJSC Grid output, Chuvashenergo branch 92.76% including OOO Public Utilities Technologies 21.08% OAO City Electric Grids 1.54% MUP City Electric Grids 0.50% MUP Alatyr City Electric Grids 1.99% OOO Elektrosnab 0.45% OOO Energostroymontazh 0.51% OOO Energoservis 0.14% OOO Teploenergoset 0.36% Yadrinskoye MPP ZhKKh (Municipal Production Enterprise 0.48% Housing and Public Utilities Services) MUP Municipal Unitary Enterprise Housing and Public Utility 0.20% Services Morgaushskoe MUP ZhKKh (Municipal Unitary Enterprise Housing and Public 0.22% Utility Services) of Krasnoarmeyskiy District OOO Urmary Electric Grids 0.36% OOO Poretskagropromenergo 0.33% OOO Teplovodokanal 0.18% OOO Energoset 0.12% ООО Elektroset (MUP Energetik) 0.00% OOO Kupol 0.00% Transneft Electric Network Service, LLC 0.03% OOO Managing Company Pervaya Ploshchadka 0.26% OOO Energoset 0.26% OOO Electromechanical Plant 0.44% OOO Energoset (Rostelekom) 0.13% OOO Yantar 0.55% OOO Energotranzit 0.14% MUP Public Utilities 3.95% Orenburgenergo, a branch of IDGC of Volga, PJSC Grid output, Orenburgenergo branch 90.25% including South-Ural Branch of Gazpromenergo, LLC 4.18% Saratov Branch of Gazpromenergo, LLC 0.12% Cisural Branch of Gazpromenergo, LLC 0.04% State Unitary Enterprise of the Orenburg Region Orenburg 0.04% International Airport OOO Buguruslanneft 0.05% OOO Orenburgenergoneft (from January 01, 2015) 0.68% South Ural Power Supply Directorate, business unit of 1.12% Transenergo, a branch of Russian Railways, JSC

Kuybyshev Power Supply Directorate, business unit of 0.29% Transenergo, a branch of Russian Railways, JSC

GUP Orenburgkommunelektroset, Agreement No. 1030-22 10.37% GUP Orenburgkommunelektroset, Agreement No. 1112-22 0.17% GUP Orenburgkommunelektroset, Agreement No. 992-22 0.00% ZAO Elektroset 0.11% OAO Gay Mining and Processing Combined Works 0.85% Heavy Engineering ORMETO-YUMZ, JSC 0.07% ZAO Synthetic Alcohol Plant 0.04% OAO South Urals Cryolite Plant 0.12% ZAO Mechanical Plant 0.15% OOO Gay Non-Ferrous Metal Processing Plant (terminated on 0.00% March 01, 2015) OAO Elevator 0.04% OAO Neftemaslozavod 0.05% ZBO Drill Industries, Inc. 0.05% MUP Gay Municipal Unitary Enterprise Housing and Public 0.09% Utility Services OAO Buzuluk Heavy Engineering Plant 0.00% ZAO RN-Energoneft 0.00% OAO Ural Steel 0.00% South-Ural Branch of Gazpromenergo, LLC 12.01% Cisural Branch of Gazpromenergo, LLC 2.77% Russian Railways, JSC, Kuibyshev Railways 0.90% Russian Railways, JSC, South Ural Railways 2.10% ZAO Elektroset 0.13% OAO Oboronenergo 0.67% OOO Electric Grid Company 0.20% OOO Orenburgelektroset 0.11% OOO Electric Grid Enterprise 0.00% OOO Electric Grid Enterprise 0.02% OAO Production Association Strela 0.33% GUP Orenburgkommunelektroset 0.42% OOO Orenburg Region Public Electric Grids (333-22) 0.09% OOO Orenburg Region Public Electric Grids (1263-22) 0.09% OOO Orenburg Region United Energy Grid (1213-22) 0.13% OOO Orenburg Region United Energy Grid (347-22) 0.07% OOO Orenburg Region Public Energy System (from January 0.14% 01, 2015) OOO Garden Electric Grids 0.05% OOO Transenergoset 0.03% OOO Energozashchita 0.05% OOO Stroyenergoset 0.03% OOO Gay Non-Ferrous Metal Processing Plant 0.00% OOO Energokontrakt 0.43% MUP Public Utilities Department 0.04% OOO Energetik 0.00% OOO Energokompleks 0.27% OOO Sol-Iletsk Grain Elevator 0.01% OOO Ekopolimer 0.08% OAO Orenburgugol 0.00% OOO Regional Distribution Grid Company 31.44% ZAO Mega Mir 0.01% OOO Orenburg City Grid Company 0.19% Elektrostroy 0.05% OAO Gidropress 0.13% OAO Orsknefteorgsintez 0.04% OOO Ekspertenergoaudit 0.59% OOO Energoset 0.00% OOO Buguruslanneft (from January 01, 2015) 1.19%