3.2.1 Network Exploitation and Grid Asset Consolidation
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| Indicator | 2022 | 2023 | 2024 | 2024/2023, % |
|---|---|---|---|---|
| Substations, pcs | 38,141 | 38,658 | 41,690 | +7.8% |
| Substation capacity, MVA thousand | 34.9 | 35.3 | 37.4 | +6.0% |
| Power lines (circuits), km | 153,398 | 154,113 | 161,841 | +5.0% |
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The Company’s repair and maintenance target for 2024 totaled RUBruble 6,513 million, real expenses in 2024 totaled RUBruble 7,276 million or 112%.
The 2024 repair program (branch breakdown) , RUBruble million
| Branch | Target | Actual | % of completion |
|---|---|---|---|
| Permenergo | 2,381 | 2,539 | 107% |
| Sverdlovenergo | 2,259 | 2,420 | 107% |
| Chelyabenergo | 1,855 | 2,297 | 124% |
| Rosseti Ural (incl. HQheadquarters) | 6,513 | 7,276 | 112% |
The overrun was mainly due to recovery and unscheduled works. Total costs of the branches spent on outsourcing repair works totaled RUBruble 1,166 million or 16%, with RUBruble 6,110 million or 84% spent on in-house repair works.
The Company’s repair program in 2022-2024
| Type of repair | MU | 2022 real values | 2023 real values | 2024 target values | 2024 real values | 2024 % of completion |
|---|---|---|---|---|---|---|
| Power line corridor clearing | ha | 10,387 | 11,128 | 10,064 | 10,415 | 103% |
| Groundwire replacement | km | 258 | 231 | 248 | 266 | 107% |
| Insulator replacement | pcs | 111,431 | 113,342 | 96,461 | 111,103 | 115% |
| Transformer overhaul | pcs | 44 | 29 | 28 | 38 | 136% |
| Switch overhaul | pcs | 1,605 | 1,368 | 1,350 | 1,445 | 107% |
| Overhaul of isolating switches, short circuitors, disconnecting switches | pcs | 1,838 | 1,835 | 1,582 | 1,597 | 101% |
| Total repair costs | RUBruble million | 4,829 | 6,185 | 6,513 | 7,276 | 112% |
The overrun was mainly due to recovery and unscheduled works. The repair program for 2025 totals RUBruble 7,187 million or -1.2%YoY, with RUBruble 5,966 million or 83% to be spent on in-house works and RUBruble 1,221 million or 17% to be spent on outsourcing works.
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The number of incidents on 110kV+ networks of the Company’s branches decreased 5.2% on 2023 and decreased 4.8% on 2022. The diagram shows the amount of incidents and disturbances on 110kV+ networks.
Incidents on 110 kV+networks, pcs
Factors of incidents
Primary factors of incidents on 110kV+ networks in 2024 are natural impacts, external impacts, aging of equipment, exploitation defects. In 2024, 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[18]. Sverdlovenergo failed to complete Isaifi LV, with total Isaidi and Isaifi completed.
Reliability target and real values of our branches
| Branch |
Permenergo |
Chelyabenergo |
||||
|---|---|---|---|---|---|---|
| Target value | Real value | ∆,% | Target value | Real value | ∆,% | |
| Isaidi, hours | 0.7259 | 0.6224 | -14.3% | 0.9787 | 1.0998 | 12.4% |
| Isaifi, pcs | 0.6866 | 0.6068 | -11.6% | 0.7774 | 0.7901 | 1.6% |
| Indicator |
Sverdlovenergo |
||
|---|---|---|---|
| Target value | Real value | ∆,% | |
| Isaidi HV, hours | 0.8317 | 0.0446 | -94.6% |
| Isaidi MV1, hours | 0.7023 | 0.1752 | -75.1% |
| Isaidi MV2, hours | 2.3515 | 1.6297 | -30.7% |
| Isaidi LV, hours | 2.6417 | 2.8515 | 7.9% |
| Isaifi HV, pcs | 0.1229 | 0.04340 | -64.7% |
| Isaifi MV1, pcs | 0.3106 | 0.0709 | -77.2% |
| Isaifi MV2, pcs | 0.7795 | 0.6563 | -15.8% |
| Isaifi LV, pcs | 0.9630 | 1.3170 | 36.8% |
In 2024, to enforce reliable grid performance, the Company has approved a set of special-purpose programs on technical development[19], incl.: programs on reduction of incident rate and enhancement of equipment reliability; maintenance and repairs; exploitation works; upgrade (retrofitting) of grid facilities; enhancement of fire safety; equipment of special-purpose vehicles and transport with state-of-the-art security tools; purchases of electric supply reserves, etc. The primary expected effect from the above-mentioned 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.
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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.
Consolidation of grid assets
| Asset type |
2022 |
2023 |
2024 |
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|---|---|---|---|---|---|---|---|---|---|
| MVA | Kmkilometer | c.u.conventional units | MVA | Kmkilometer | c.u.conventional units | MVA | Kmkilometer | c.u.conventional units | |
| Rosseti Ural’s total | 2,900 | 5,737 | 46,834 | 4,396 | 10,727 | 79,802 | 4,582 | 7,826 | 69,895 |
| Acquisition of grid facilities | 56 | 358 | 1,721 | 1,023 | 4,940 | 27,414 | 40 | 14 | 466 |
| Rented grid facilities | 2,824 | 5,221 | 44,632 | 3,225 | 4,756 | 48,244 | 3,638 | 4,478 | 49,669 |
| Other (permanent rights of ownership and use) | 13 | 82 | 274 | 118 | 741 | 3,267 | 34 | 185 | 784 |
| Other (temporary rights of ownership and use) | 7 | 76 | 207 | 30 | 290 | 877 | 870 | 3,149 | 18,976 |
| AOJoint-Stock Company EESK’ total | 1,266 | 9,356 | 31,317 | 579 | 1,596 | 9,920 | 555 | 1,495 | 9,632 |
| Acquisition of grid facilities | 0 | 0 | 12 | 82 | 0 | 121 | 8 | 0 | 74 |
| Rented grid facilities | 1,247 | 9,356 | 31,078 | 443 | 1,358 | 8,343 | 524 | 1,399 | 9,087 |
| Other (permanent rights of ownership and use) | 19 | 0 | 227 | 54 | 238 | 1,456 | 23 | 96 | 471 |
| Other (temporary rights of ownership and use) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |