Starting July 1, 2025, Ukraine will implement a new European voltage standard of 230/400 V.

This information is stated in the resolution of the National Commission for State Regulation in the Spheres of Energy and Utilities (NERC) No. 550 issued on April 15.

The document introduces changes to the Distribution System Code, outlining European approaches to defining electricity quality parameters. The nominal voltage will now be 230/400 V, with permissible deviations of up to 10% (from 207 to 253 V).

The DSTU EN 50160:2014 standard, which previously governed voltage characteristics, became obsolete in March 2024. In May of the same year, a new standard harmonized with the European EN 50160 was approved, which took effect on March 1, 2025.

NERC anticipates that transitioning to European standards will positively affect electricity supply quality. Stable voltage will reduce the risk of damage to sensitive household appliances and decrease the need for additional protection equipment like stabilizers. Additionally, this will enhance energy efficiency, allowing electrical devices to operate optimally.

DTEK emphasizes that household appliances are manufactured in compliance with EU requirements, so the transition to the new voltage standard will not harm them.