3.2.1 Network Exploitation and Grid Asset Consolidation

Decrease in core production assets during 2022 was due to cancellation of the contract on the lease of OOOLimited Liability Company AES Invest’s grid facilities (6 substations and 1,745 transformer substations with capacity of 669 MVA, 4,957 km of power lines). Increase of substations’ installed capacity was due to the conclusion of the contract on the lease of PAOPublic Joint-Stock Company Uralkali’s grid assets (12 110 kV substations with capacity of 844 MVA).

The Company’s repair and maintenance target for 2022 totaled RUBruble 4,631 million, real expenses in 2022 totaled RUBruble 4,829 million or 104%. Repair program in 2022 in branches:

The overrun was mainly due to recovery and unscheduled works. Partial underperformance of the target repair program by Chelyabenergo was due to cancellation of the contract on the lease of OOOLimited Liability Company AES Invest’s grid facilities (target repair and maintenance expenses: RUBruble 75.6 million). Total costs of the branches spent on outsourcing repair works totaled RUBruble 695 million or 14%, with RUBruble 4,134 million or 86% spent on in-house repair works.
The Company’s repair program in 2020-2022:

Changes in repair volumes are attributable to natural fluctuations coming from repair periodicity. The repair program for 2023 totals RUBruble 5,807 million or +20% YoYyear on year, with RUBruble 5,007 million or 86% to be spent on in-house works and RUBruble 800 million or 14% to be spent on outsourcing works.

A decline in the number of incidents on 110kV+ networks of the Company’s branches totaled 4% on 2021 and 7.5% on 2020. The diagram shows the amount of incidents and disturbances on 110kV+ networks.

Primary factors of incidents on 110kV+ networks in 2022 are natural impacts, external impacts, aging of equipment, exploitation defects. In 2022, all branches of the Company achieved long-term reliability targets, set by the regional regulators, Permenergo and Chelyabenergo showed significant outperformance of the targets. Sverdlovenergo achieved the set target with allowances made for permissible variation coefficient of 30%, stipulated by the Guidelines^[9].
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In 2022, to enforce reliable grid performance, the Company has approved a set of special-purpose programs on technical development^[10]: programs on reduction of incident rate and enhancement of equipment reliability, maintenance and repairs, service checks, upgrade (retrofitting) of grid facilities, enhancement of fire safety, environmental safety, compliance with industrial safety requirements and enhancement of reliability of equipment, used at dangerous production facilities, equipment of special-purpose vehicles and transport with state-of-the-art security tools, lifting facilities, purchases of electric supply reserves. The primary expected effect from the special-purpose, repair and investment programs lies in the control of the level of incident rates and creation of conditions for achieving the reliability targets set by the regulators.

OAOOpen Joint-Stock Company IDGCInterregional Distribution Grid Company of Urals (jointly with AOJoint-Stock Company EESK) consolidates grid assets to shape a unified network area on the territory of the Company’s operations helping create a single point of responsibility for reliable and high-quality electricity supply and providing additional possibility to connect new consumers to the consolidated networks.

Primary means of consolidation were:

• Lease of grid facilities. As of 01.2023 the volume of rented facilities and facilities with temporary right of ownership and use totaled 75,917 c.u.conventional units;
• Acquisition (the volume of grid facilities acquired under PSA totaled 1,733 c.u.conventional units);
• Uncompensated retrieval of grid facilities. We created hassle-free conditions for the transfer of grid facilities for any applicant. Applications on the transfer of grid facilities can be submitted through the corporate web site.

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