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Repairs Without Outages: How Power Engineers Learned to Fix Grids Without Turning Off Lights in Homes

Repairs Without Outages: How Power Engineers Learned to Fix Grids Without Turning Off Lights in Homes

05.05.2026 16:22

DTEK Grids Distribution System Operators are scaling up modern "live-line" work technologies. In 2025, the number of repairs on 0.4 kV overhead lines performed without disconnecting customers increased by a quarter, reaching over 27,000 operations.

By implementing European standards, power engineers are improving grid reliability while ensuring that residents and businesses remain with electricity, even during planned or emergency maintenance.

Safety and Technology

Live-line work requires specialized training and equipment. During these operations, specialists maintain full insulation from electric current. This process utilizes:

  • specialized protective clothing and dielectric gloves;

  • insulated tools and equipment;

  • dedicated insulating platforms.

All operational procedures are strictly regulated and practiced at training facilities beforehand to ensure maximum personnel safety.

Coverage and Statistics

So far this year, power engineers have completed nearly 7,000 such tasks in Kyiv, as well as the Kyiv, Odesa, and Dnipropetrovsk regions. Currently, this accounts for approximately 60% of all work performed on the 0.4 kV voltage class.

Alina Bondarenko, CEO of DTEK Grids, emphasized that this approach is becoming a new industry standard:

"In 2025, we completed 27.5 thousand tasks without outages on 0.4 kV lines. In metering cabinets, over 98% of tasks are already performed without de-energizing customers. Furthermore, the only crew in Ukraine capable of performing such work on higher voltage 6–10 kV lines is currently operating in the Dnipropetrovsk region."

DTEK Grids plans to further scale this approach to minimize customer inconvenience during power grid maintenance.

Fact Sheet: DTEK Grids serves 5.1 million households across five regions of Ukraine. DTEK Group is the largest private investor in Ukraine's energy sector. Currently, about 1,000 crews are working to ensure stable power supply under wartime conditions.