Rosseti Yug 2025 Annual Report

Electricity transmissionIncluding the activities of the Kubanenergo branch in December 2025.

GRI 2-6

Across the Company in 2025
Electricity balance indicators for 2025

Branch

Delivery to the grid, million kWh

Delivery from the grid, million kWh

Electric losses

million kWh

%

Astrakhanenergo

3,280

2,767

513

15.64

Volgogradenergo

8,517

7,953

564

6.63

Kalmenergo

922

725

197

21.38

Kubanenergo

2,577

2,152

425

16.47

Rostovenergo

14,770

13,540

1,230

8.33

PJSC Rosseti South

30,067

27,138

2,929

9.74

In 2025, the delivery from the grid to consumers and adjacent territorial grid organisations (TGOa) within the balance sheet and operational responsibility (taking into account the reorganisation of the Company through the merger of JSC Rosseti Kuban from 1 December 2025) amounted to 27,138 million kWh, which is 1.653 million kWh, or 6.48% higher year-on-year (25,485 million kWh).

Volumes of electricity transmission services provided by PJSC Rosseti SouthIncluding internal electricity sales.

Branch

2024

2025

Changes in 2025 compared to 2024

million kWh

RUB million

million kWh

RUB million

million kWh

RUB million

% of the volume of services rendered

Astrakhanenergo

2,823.9

7,229.2

2,757.3

8,351.5

–66.6

1,122.3

–2.36

Volgogradenergo

8,266.8

12,671.3

7,718.9

21,946.1

–547.9

9,274.8

–6.63

Kalmenergo

675.9

2,083.6

723.7

2,482.7

47.7

399.1

7.06

Kubanenergo (for December 2025)

Х

Х

1,921.3

7,915.6

Х

Х

Х

Rostovenergo

13,548.9

26,695.9

13,219.9

45,009.9

–329.0

18.314

–2.43

PJSC Rosseti South

25,315.5

48,680.0

26,341.1

85,705.8

1,025.6

37,025.8

4.05

The volume of electricity transmission services provided, taking into account internal sales, amounted to 26,341.1 million kWh, which is higher than the same period in 2024 (25,315.5 million kWh) by 1,025.6 million kWh, or 4.05%, primarily due to the reorganisation of PJSC Rosseti South through the merger of JSC Rosseti Kuban.

In comparable conditions (excluding the Kubanenergo branch), there is a decrease in the volume of common-pot electricity net delivery by 895.7 million kWh, or 3.54%, which is mainly due to a change in the settlement scheme in the Volgogradenergo and Rostovenergo branches with income-bearing territorial grid companies from 1 January 2025 in connection with the execution of SGO functions by PJSC Rosseti South.

Revenue for electricity transmission services, including internal sales, rose by 76.06%, due to an increase in the average tariff by 69.20% (mainly due to the Company’s performance of the SGO functions from 1 January 2025), as well as a rise in the volume of services provided due to the merger of JSC Rosseti Kuban.

Revenue structure for electricity transmission services in 2025, %Including the data on the Kubanenergo branch for December 2025.

Electric losses

As of yearend 2025, taking into account the merger of JSC Rosseti Kuban’s electric losses in 2025 increased by 239 million kWh, or 0.80%, year-on-year, under comparable conditions for electricity delivery to the grid.

Without taking into account the merger of JSC Rosseti Kuban, the planned level of electricity in 2025 was achieved by the Company with a decrease of 0.25%, or 68.5 million kWh, while taking into account the Company’s performance of the SGO functions, the level of electric losses increased by 0.16%, or 45.3 million kWh, relative to 2024 (in comparable conditions to the actual net delivery to the grid).

Changes in electric losses in 2021–2025
Electric losses by the Company’s branches in 2024–2025

Branch

2024

2025

2025/2024

million kWh

%

million kWh

%

million kWh

p.p.

Astrakhanenergo

515.7

15.34

513

15.64

9.8

0.30

Volgogradenergo

596.8

6.69

564.3

6.63

–5.3

–0.06

Kalmenergo

206.9

23.40

197.2

21.38

–18.6

–2.02

Kubanenergo

Х

Х

424.5

16.47

Х

Х

Rostovenergo

1,184.5

7.99

1,230

8.33

49.5

0.33

PJSC Rosseti South

2,503.9

9.11

2,929

9.74

239.3

0.80

Planned and actual values of target indicators of electric losses in the reporting year

Indicator

Unit of measurement

2025

Plan

ActualThe level of electric losses was determined taking into account the reorganisation of the Company through the merger of JSC Rosseti Kuban on 1 December 2025.

Electric losses

million kWh

2,634

2,929

RUB million, excl. VATIncluding internal electricity sales.

12,195

13,858

% of delivery to the grid

9.36

9.74