October 25, 2017. Moscow, Russia. PJSC RusHydro (ticker symbol: MICEX-RTS, LSE: HYDR; OTCQX: RSHYY) announces its operating results for the 3^rd quarter and 9 months of 2017 of the parent company and the subsidiaries of RusHydro Group reflected in consolidated financial statements.

Key highlights:

• Solid hydropower output in the 3^nd quarter of 2017 against the background of record-breaking water inflows to reservoirs of the Volgo-Kama cascade and inlfows to reservoirs in Siberia and Far East of Russia close to long-run average.

• otal electricity generation by power plants of RusHydro Group in 3Q 2017 amounted to 31,029 GWh (+0.1%), in 9M 2017 – 94,578 GWh (+0.5%).

• In 3Q 2017, total production by hydropower and pumped storage plants amounted to 24,880 GWh (-4.3%), total output by fossil fuel and geothermal plants – 6,149 GWh (+23.0%).

• In 9M 2017, total production by hydropower and pumped storage plants amounted to 72,853 GWh (+0.0%), total output by fossil fuel and geothermal plants – 21,725 GWh (+2.1%).

• The electricity generation by the Boguchanskaya hydropower plant in 1H 2017 amounted to 10,463 GWh (-0.5%) ^[1].

• In 4Q 2017, water inflow to reservoirs of Volga-Kama cascade is expected higher than long-run average, to reservoirs of the South of Russia, Siberia and Far East – close to or slightly higher than long-run average.

Electricity generation by the plants of RusHydro Group, GWh

The underlying factors of the production change in January-September 2017 were:

• total water inflow to reservoirs of the Volga-Kama cascade higher than normal;

• water inflow to major reservoirs of Siberia was on the level of previous year or slightly lower;

• water inflow to hydropower plants of the South of Russia on the normal level or slightly higher than long-run average;

• increase in electricity consumption in the Far East of Russia in 2^nd and 3^rd quarters of 2017.

Center of Russia

In 3Q 2017, due to continued rainfalls the water inflows were at all time highs. Water inflow to Gorkovskoe, Cheboksarskoe, Kamskoe and Nizhnekamskoe reservoirs was 1.3-1.7x of normal values, to Uglich, Rybinskoe and Kuibyshevskoe – 2.1-3.3x of norm. In 3Q 2017, total water inflow to reservoirs in Volga and Kama was 66.0 km³ against a normal value of 37.0 km³.

Flow control gates of the dams of Zhigulevskaya hydropower plant were open for 126 consecutive day – the longest period in cascade’s history. At the same time the amount of sterile spills was 56.74 km³ – 10% lower than in 2016 (in 2016, sterile spills lasted 55 consecutive days with total volume of 63.31 km³).

Efficient cooperation with the System Operator and Russian water authority in respect of planning of hydropower regimes allowed to bring sterile spills to a minimum, effective management of spring flooding as well as further flooding caused by rainfalls with optimal water levels and high efficiency factor.

Total production by the hydropower plants of Volga-Kama cascade, operated by RusHydro group, and Zagorskaya pumped storage in the 3^nd quarter of 2017 increased by 46.8% against the same figure of 2016 to 12,395 GWh, in the 9 months of 2017 – increased by 17% to 36,203 GWh.

South of Russia and North Caucasus

In the 1^st half of 2017, hydropower plants in the North Caucasus operated in conditions of normal water inflows or up to 20% higher than norm.

At the beginning of spring flooding the Chirkeyskoe reservoir was drawn down to the lowest level in the last 21 years, followed by gradual filling up of the reservoir. However, due to low water inflows the reservoir was not filled to the normal level.

Rivers of Baksan and Cherek in Republic of Kabardino-Balkaria went through a difficult spring flooding. Ample and frequent rainfalls in the mountains resulted in emergency situations in three region of the republic. Flooding caused by ample rainfalls brought significant volumes of debris to reservoirs that caused periodic downtime of Baksanskaya, Aushigerskaya, Zaragizhskaya and Kashkhatau hydropower plants,

The filling of Kuban reservoir was completed 5 days earlier than planned. The total amount – 474.8 mn m³ – should be dispensed through May 2018.

The electricity generation by the hydropower plants of the South of Russia and North Caucasus in the 3^rd quarter of 2017 decreased against previous year by 15.6% to 2,259 GWh, in the 9 months of the year decreased by 16.8% to 5,705 GWh.

Siberia

In the 3^rd quarter of 2017, water inflow to Novosibirskoe and Sayano-Shushenskaya hydropower plants reservoirs was close to long-run average levels, to Bratskoe reservoir and Baikal – 35-50% lower than normal.

Sayano-Shushesnkaya, after the planned draw-down of the reservoir to the minimum admissible level of 500 meters, entered regime of filling-up in order to accumulate the water resources required for operations in winter. The maximum reservoir level of 538.58 m was reached in mid-September – the highest level in the last 11 years of the facility.

The Angara cascade, like in the previous year, is going through low water period. Boguchankskaya hydropower plant is working in accordance with instructions of the Yenisei Basin Directorate in order to provide sufficient levels of water to allow navigation in the Lower Angara. The reservoir level of the Boguchanskaya was drawn down lower than admissible level – to 207.5 m – to allow navigation.

Total electricity generation by RusHydro’s Siberian hydropower plants in the 3^rd quarter of 2017 decreased by 35.9% to 6,319 GWh, in the 9 months of 2017 decreased – by 15.9% to 18,652 GWh.

The Boguchanskaya hydropower plant in the 3^st quarter of 2017 generated 3,716 GWh, a 7.7% decrease as compared to the same period of the previous year, in the 9 months of the year – 10,463 GWh (-0.5%).

Far East

In the 2^nd and 3^rd quarters of 2017, water inflows to reservoirs in the Far East was close to normal (inflows to some reservoirs was 5-10% higher than normal).

Lower than normal water inflow to Zeyskoe reservoir (ca. 10%) during spring flooding didn’t allow to fill up the reservoir to a normal level of 315.0 m by the start of autumn, which should result in constraints in Zeyskaya hydropower plant’s output.

As of late August Bureyskaya hydropower plant experienced an increased water inflow due to ample rainfalls. As of August 31, 2017, the plant started sterile spills which ended in September 20. During this time, the facility dispensed 3.67 km³ of water, and accumulated 10.22 km³ to operate safely in autumn/winter period.

Total electricity generated by hydro and geothermal power plants of the Far East in the 3^rd quarter of 2017, decreased by 25.0% to 3,474 GWh, in the 9 months of the year – decreased by 5.6% against the same period of previous year to 10,702 GWh.

In the 3^rd quarter of 2017, generating assets of RAO ES of East Subgroup, a subsidiary of RusHydro, produced 6,389 GWh, or 21,8% higher than in the 3^rd quarter of 2016. Of this total, 77% was generated by JSC Far East Generating Company (DGK), which increased production by 30.7% in the 3^rd quarter of 2017, mainly due to decrease in output from hydropower plants, as well as increase in electricity consumption in the United Power System of the East by 1.9%, as well as a low base effect of 2016 when a significant amount of supply from thermal power generation was substituted by increased hydropower output.

Overall electricity production by RAO ES of East Subgroup in the 9 months of 2017 increased by 2.0% to 22,882 GWh.

In the 9months of 2017, heat output by thermal plants of RAO ES of the East decreased by 7.5% to 18,708 thousand GCal as compared to 2016. The decrease is due to higher temperatures and reduced length of heating season in a number of towns of the region.

Heat output by thermal plants of RAO ES of the East Subgroup, thousand GCal

Armenia

In January-September 2017, electricity generation by the Sevan-Hrazdan cascade of hydropower plants in Armenia increased by 16% to 435 GWh. The power generation by the plants of the cascade is dependent on water inflows of the Hrazdan river and water releases from Sevan lake.

Electricity retail

In the 9 months of 2017, total electricity output by RusHydro’s retail companies, operating in Chuvashia, Ryazan and Krasnoyarsk regions, amounted to 14,908 GWh, a 4.3% decrease as compared to the same period of 2016.

The decrease in output is driven by a number of consumers switching to wholesale electricity purchases (primarily in Krasnoyarsk region), higher temperatures, and additional calendar day in 2016 due to leap year, as well as lower purchase of electricity for compensation of losses by grid companies on the back of overall reduction in electricity consumption.

Electricity output by RusHydro Group’s retail companies, GWh^[3]

Water inflows forecast

According to the forecast of the Hydrometeorologic Center of Russia, the following dynamics of water inflows to the major reservoirs is expected in the 4^th quarter of 2017:

• Total water inflows to reservoirs on Volga and Kama is expected in the range of 40-43.7 km³ as compared to the average of 36.6 km³);

• water inflow to major reservoirs in Siberia is expected to be close to normal levels or slightly higher;

• water inflow to the reservoirs of hydropower plants located in the North Caucasus is expected to be close to long-run average;

• water inflow to hydro plants of Zeyskaya and Kolymskaya hydropower plants is expected to be higher than long-run average.