En+ Group Investment Presentation
Water Inflows as a Driver to Increase HPP Generation
Overview
The Group's Angara cascade HPPS (Irkutsk, Bratsk and Ust-Ilimsk HPPs) increased
power generation to 25.5 TWh in 1H 2021 (up 14.3% y-o-y) and to 11.8 TWh in
2Q 2021 (up 12.4% y-o-y). This was due to increased water reserves in Lake Baikal
and in the Bratsk reservoir. Water levels in Lake Baikal reached 456.60 metres as at
1 July 2021 vs. 456.49 metres at 1 July 2020. Water levels in the Bratsk reservoir
reached 400.90 metres as at 1 July 2021 vs. 397.67 metres at 1 July 2020
The Group's Krasnoyarsk HPP's total power generation increased to 11.4 TWh in
1H 2021 (up 17.5% y-o-y). In 2Q 2021, power generation at the Krasnoyarsk HPP was
6.6 TWh (up 32.0% y-o-y). This increase was a result of a more intense, state
regulated forced drawdown in the Krasnoyarsk reservoir due to high water inflows.
The water inflow to Krasnoyarsk reservoir was 4,526 m³ per sec. (154% of normal
level) in 2Q 2021, compared to 3,565 m³ per sec. (121% of normal level) in 2Q 2020.
The water inflow in 1H 2021 was 2,393 m³ per sec. (150% of normal level), compared
to 1,915 m³ per sec. (120% of normal level) in 1H 2020
Water level (m)
Water inflows, Angara cascade¹ (m³ per sec.)
Ent
GROUP
Jan
Feb March Apr May June July Aug Sept
Oct
Nov
Dec
Average (1977-2020)
2017
2018
2019
2020
2021
Water inflows, Yenisey cascade / KHPP (m³ per sec.)
Normal
Minimum
30.06.2021
30.06.2020
Irkutsk HPP
457.00
455.54
456.58
456.48
Bratsk HPP
402.08
392.08
400.86
397.66
Ust-Ilimsk HPP
296.00
294.50
295.81
295.85
Jan
Feb March Apr May June July Aug Sept Oct
Nov
Dec
Krasnoyarsk HPP
243.00
225.00
240.94
240.58
Average (1977-2020)
2017
2018
- 2019
2020
2021
(1) Hydro production and water inflows data for Angara cascade include Irkutsk, Bratsk and Ust-Ilimsk HPPs.
45View entire presentation