3.2.1 Network Exploitation and Grid Asset Consolidation

The Company’s repair and maintenance target for 2023 totaled RUBruble 5,841 million, real expenses in 2023 totaled RUBruble 6,185 million or 106%.

The 2023 repair program (branch breakdown) , RUBruble million

The overrun was mainly due to recovery and unscheduled works. Total costs of the branches spent on outsourcing repair works totaled RUBruble 934 million or 15%, with RUBruble 5,251 million or 85% spent on in-house repair works.

The Company’s repair program in 2021-2023

Changes in repair volumes are attributable to natural fluctuations coming from repair periodicity. The repair program for 2024 totals RUBruble 6,513 million or +5%YoY, with RUBruble 5,396 million or 83% to be spent on in-house works and RUBruble 1,117 million or 17% to be spent on outsourcing works.

The number of incidents on 110kV+ networks of the Company’s branches increased 1.4% on 2022 and decreased 7.5% on 2021. The diagram shows the amount of incidents and disturbances on 110kV+ networks.

Incidents on 110 kV+networks, pcs

Primary factors of incidents on 110kV+ networks in 2023 are natural impacts, external impacts, aging of equipment, exploitation defects. In 2023, all branches of the Company achieved long-term reliability targets, set by the regional regulators, incl. with allowances made for permissible variation coefficient of 30%, stipulated by the Guidelines^[11].

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In 2023, to enforce reliable grid performance, the Company has approved a set of special-purpose programs on technical development^[12], incl.: programs on reduction of incident rate and enhancement of equipment reliability; maintenance and repairs; 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.

PAOPublic Joint-Stock Company Rosseti Ural (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:

• Acquisition (27 535 c.u.conventional units);
• Lease of grid facilities (as of 01.01.2024, the volume of rented facilities and facilities with temporary right of ownership and use totaled 57,464 c.u.conventional units);
• Uncompensated retrieval of grid facilities (4,723 c.u.conventional units). 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.

Consolidation of grid assets

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