The Vaasa-based renewable energy expert Ampner has been chosen as project partner for the Swedish wind and solar farm developer OX2 in delivering 455 MW wind farm in Lestijärvi, Finland.

Lestijärvi wind farm project includes 69 wind turbines with maximum height of 240 m. With the total capacity of 455 MW the wind farm will be one of the biggest ever built in Finland. The construction is expected to be started by the end of 2021 and the wind farm is planned to be operational in 2024.

Ampner will be responsible for evaluating the grid connection of the power plant, preliminary studies and design for the power plant including protection studies as well as grid code compliance service. Ampner’s grid code compliance service includes static and dynamic calculations as well as testing and validation of compliance.

“We are happy to again partner with Ampner in the Lestijärvi project’s grid study works and grid verification works. Ampner’s experience and competence gives us a solid base for a good project”, said Steven Kabagambe, Construction Project Manager for OX2.

Ampner CEO Mika Jantunen comments: “Ampner is very pleased to continue collaboration with OX2 in Lestijärvi project. We have established a close and professional relationship during many years of collaboration and expect this success to continue now in one of the biggest wind power plants in Finland.”

Additional information

Mr. Mika Jantunen, CEO, Ampner

Tel: +358 40 165 7933, e-mail:

Mr. Steven Kabagambe, Construction Project Manager, OX2

Tel: +46 70 343 64 26, e-mail:


Ampner provides products and services for connecting renewable energy sources to the grid. Ampner creates smart solutions for managing, testing and assuring the quality of a variety of renewable energy sources. The company designs, calculates and simulates electrical connections to the grid, whatever the energy source: wind, the sun, water, biomass or battery energy storage. The company also designs and manufactures string inverters capable of operating in demanding conditions in photovoltaic power plants and battery energy storage systems globally.


OX2 develops and sells wind and solar farms. OX2 has taken a leading position in large-scale onshore wind power over the past 16 years and has developed and sold approximately 2.5 GW in Sweden, Finland, Poland and Norway for clients such as Allianz, Ardian and IKEA. By constantly increasing access to renewable energy, OX2 is promoting the transition towards a more sustainable future. OX2 has operations in Sweden, Finland, Poland, France, Lithuania, Norway, Spain, Italy and Romania with its headquarters in Stockholm, Sweden. Sales revenue in 2020 was approximately MSEK 5,201.