Ukraine and Poland connect grids with additional power transmission line
Photo: Energoatom

Ukrenergo and the Polish transmission system operator PSE S.A. put into operation an additional interstate power transmission line between Ukraine and Poland, the general director of Ukrenergo, Volodymyr Kudrytskyi, announced.

"A powerful electricity transmission line (interconnector) between Ukraine and Poland with a length of about 400 km has been added, which provides an additional electrical connection between the European and Ukrainian power systems. This line makes it possible to increase the volume of electricity exports to Europe. And if necessary, we will be able to use this line to import electricity," he wrote on Facebook.

According to him, Ukraine will start trading electricity using this line in the near future. The PSE website reports that deliveries will start on May 15.

The interconnector with Poland has been operational since April 27, 2023, and successfully operated for three days in test mode.

In August 2022, Ukraine and Poland began the restoration of the Khmelnytska NPP — Rzeszów interstate interconnector. On March 30, NNEGC Energoatom announced that it had already completed its part of the work.

The 450-kilometer 750 kV transmission line connecting the Khmelnytska NPP (Ukraine) with the 750/400 kV Widelka substation (near the city of Rzeszów, Poland) was built in 1984, when Ukraine and Poland were part of the Mir energy system. The supply of electricity through this transmission line stopped in 1992, when Poland, together with Czechoslovakia and Hungary, separated from Ukraine and synchronized their own electrical systems with the European energy system.

Putting the restored interconnector into operation can increase the physical possibilities for exporting Ukrainian electricity to Poland by almost 1,000 MW.

In September 2022, Ukrenergo announced a tender for the reconstruction of the transmission line with its conversion to a voltage of 400 kV. It was won by the Odesa corporation of industrial and commercial enterprises Soyuz with an offer of UAH 238.6 million ($6.5 million), with which the contract was signed at the end of October.

According to the latest additional agreement, the term of the contract was extended until June 2023.

Since March 16, 2022, the Ukrainian energy system works synchronously with the European continental grid ENTSO-E and is now part of the European energy space.