Ukraine will switch to a nominal voltage of 230/400 volts.

Starting from July 1, 2025, European quality standards for electricity supply will begin to apply in Ukraine, including the transition to a nominal voltage of 230/400 Volts.

According to the National Commission for State Regulation of Energy and Public Utilities (NERC), European quality standards for electricity supply will come into effect in Ukraine on July 1, 2025. One of the key innovations will be the establishment of clear limits for permissible voltage deviation - from 207 to 253 Volts, which constitutes a deviation from the nominal value of 230 Volts by +-10%. These changes are expected to positively impact the quality of electricity supply.

The NERC explained that stable voltage will help avoid damage to household appliances that are sensitive to fluctuations. In addition, this will allow devices to operate efficiently and reduce the need for additional protective measures, such as stabilizers.

According to the order of the National Standardization Authority of Ukraine 'UkrNDNC' dated May 23, 2024, No. 179, Ukraine has adopted a new edition of the national standard that is harmonized with European requirements. This standard will come into force on March 1, 2025.

On April 15, the NERC adopted a resolution 'On approval of changes to the Distribution System Code', which clarifies the provisions regarding the implementation of new voltage levels.

Attention continues to be drawn to the conflict with Russia, which continues to violate the energy truce. Over the past day, three violations were recorded. According to a representative, a transformer was damaged in Mykolaiv region, a transformer was also damaged in the vicinity of Kherson, and a power line in another region. During the conflict, Russia has violated the energy truce more than 30 times, as reported to the capitals of partner states and headquarters of international organizations.

Analysis:

With the introduction of European quality standards for electricity supply in Ukraine starting July 1, 2025, an improvement in the quality of electricity supply is expected. The establishment of clear limits for permissible voltage deviation will reduce the risks of damaging household appliances and contribute to increased energy efficiency. This step will also reduce the need for additional protective measures, such as stabilizers. However, the ongoing conflict with Russia continues to create problems in the energy sector, particularly the violation of the energy truce. Measures must continue to be taken to ensure the security of electricity supply and prevent similar violations.