Enersense and Elering sign an agreement on the design of a new 110 kV transmission tower solution in Estonia

The agreement covers the design, prototyping and testing of a new narrow-base, modular transmission tower solution. The solution will be designed for both single- and double-circuit 110 kV overhead power lines. The aim is to develop a flexible and reusable solution that can be adapted to different power line projects.

The standardised solution will help make future power line projects more efficient and cost-effective by reducing the need to develop individual tower designs for each project.

The base of the new tower will occupy only approximately one square metre of land, significantly less than the area required for a typical steel suspension tower. This helps to minimise the impact on landowners and the surrounding environment.

“We are grateful to Elering for their trust in Enersense. We are pleased to contribute our engineering expertise to the development of the new tower solution and to continue our good cooperation with Elering,” says Ott Sillukse, Head of Enersense’s Estonian business.

“The aim of developing the new tower design is to make the construction of 110 kV power lines more flexible and efficient in the future. The narrower tower base allows us to reduce the land area occupied by the tower, while the standardised design enables the same technical solution to be used in different power grid projects. For Elering, it is important to find solutions that ensure the reliability of the electricity system while also taking landowners and the surrounding environment into account,” says Kadi-Kai Kollo, Head of the Project Management Unit at Elering.

The two-year project will continue until August 2028. During the first year, the work will focus on developing the tower design. The second year will be dedicated to prototyping and testing the solution.

The contract is recorded in Enersense’s Power Business Unit’s order book for the fourth quarter of 2026.