Metsälamminkangas wind farm construction project brought work and activity to the Vaala area in Finland

May 2021


It is spring and an expectant atmosphere has landed in the construction site of Metsälamminkangas wind farm in Vaala, Finland. The construction site is preparing for the coming summer, a significant time in the wind farm’s construction project. In the summer, the erection of 24 wind turbines will begin.


Eero Länsimäki, the project manager at OX2, responsible for the construction of the Metsälamminkangas wind farm, is looking forward to the upcoming work phases.


“The erection of wind turbines is a very demanding, but also an exceptional work phase. It’s great to see the turbines rising to full heights one piece at a time. Each work phase is extremely carefully planned and requires a wide range of special expertise. During the erection, nearly 150 people work simultaneously at the wind farm. Everyone needs to know exactly what is happening at each interval, so the phase is challenging in terms of management,” Eero says.


The construction works of Metslamminkangas wind farm begun in 2020. Photo: Anders Lönnfeldt

Metsälamminkangas wind farm construction project brought work and activity to the Vaala area in Finland

The construction works of Metslamminkangas wind farm begun in 2020. Photo: Anders Lönnfeldt

May 2021


It is spring and an expectant atmosphere has landed in the construction site of Metsälamminkangas wind farm in Vaala, Finland. The construction site is preparing for the coming summer, a significant time in the wind farm’s construction project. In the summer, the erection of 24 wind turbines will begin.


Eero Länsimäki, the project manager at OX2, responsible for the construction of the Metsälamminkangas wind farm, is looking forward to the upcoming work phases.


“The erection of wind turbines is a very demanding, but also an exceptional work phase. It’s great to see the turbines rising to full heights one piece at a time. Each work phase is extremely carefully planned and requires a wide range of special expertise. During the erection, nearly 150 people work simultaneously at the wind farm. Everyone needs to know exactly what is happening at each interval, so the phase is challenging in terms of management,” Eero says.


The turbines are erected one by one.

Turbine components arrive to the site with special transportation

Before erection, the wind turbine components are delivered one at a time from the port of Raahe to the wind farm. The components of up to 230-meter-high wind turbines are large and their special transportation requires an accurate transportation plan.

For example, the bottom part of a wind turbine tower, i.e. the base block, is about 20 meters long and weighs 90 tons. The blades, on the other hand, are lighter, but at their longest – 75 meters, they are also challenging to transport. Transports from the port to the wind farm are carried out at nighttime so that they cause as little disturbance to traffic as possible. As the components arrive one at a time, they will be erected and installed at the wind farm, and the turbines will be completed one by one as the installations proceed.

The last wind turbines are expected to be erected in Metsälamminkangas in November. After that, the wind farm is ready to generate electricity for the national grid. The wind farm's annual energy production will be approximately 400 GWh, corresponding to the annual electricity consumption of more than 80.000 households (5000 kWh/household).

Turbine components arrive to the site with special transportation

The turbines are erected one by one.

Before erection, the wind turbine components are delivered one at a time from the port of Raahe to the wind farm. The components of up to 230-meter-high wind turbines are large and their special transportation requires an accurate transportation plan.

For example, the bottom part of a wind turbine tower, i.e. the base block, is about 20 meters long and weighs 90 tons. The blades, on the other hand, are lighter, but at their longest – 75 meters, they are also challenging to transport. Transports from the port to the wind farm are carried out at nighttime so that they cause as little disturbance to traffic as possible. As the components arrive one at a time, they will be erected and installed at the wind farm, and the turbines will be completed one by one as the installations proceed.

The last wind turbines are expected to be erected in Metsälamminkangas in November. After that, the wind farm is ready to generate electricity for the national grid. The wind farm's annual energy production will be approximately 400 GWh, corresponding to the annual electricity consumption of more than 80.000 households (5000 kWh/household).

Project manager Eero Länsimäki is responsible for the contruction work. Photo: Petteri Löppönen

Roads and foundations in order

A lot has happened at the Metsälamminkangas site so far, since the construction work has lasted about a year. The construction of the wind farm started in spring 2020. At that time, roads and wind turbine foundations were built in the area.

A total of 17 kilometers of roads have been built or renewed in the wind farm area. The turbines require strong foundations to support them. The choice of foundation method is influenced by the soil quality of the area. In Metsälamminkangas, the good quality bedrock of the area has enabled 19 of the 24 turbines to be built on rock anchor foundations, in which case one foundation requires only 24 tons of steel and about 200 tons of concrete. This is less than one third of the material volume of the corresponding reinforced concrete foundation, also known as gravity foundation.

Depending on the size of the wind farm, the entire construction phase usually takes about two years, and during that time Eero’s workdays vary considerably from one day to the next. As the situation requires, his workstation varies between the office and the construction site – between Oulu and Vaala.

"I enjoy the fact that at the construction site I can get my ‘hands dirty’ and be in the heart of the action. On the other hand, I manage the big picture ranging from construction contracts to calculations, and vision for the future. One of the most interesting moments, however, is climbing to the tower of a finished wind turbine. It is fantastic to visit the top."

Roads and foundations in order

Project manager Eero Länsimäki is responsible for the contruction work. Photo: Petteri Löppönen

A lot has happened at the Metsälamminkangas site so far, since the construction work has lasted about a year. The construction of the wind farm started in spring 2020. At that time, roads and wind turbine foundations were built in the area.

A total of 17 kilometers of roads have been built or renewed in the wind farm area. The turbines require strong foundations to support them. The choice of foundation method is influenced by the soil quality of the area. In Metsälamminkangas, the good quality bedrock of the area has enabled 19 of the 24 turbines to be built on rock anchor foundations, in which case one foundation requires only 24 tons of steel and about 200 tons of concrete. This is less than one third of the material volume of the corresponding reinforced concrete foundation, also known as gravity foundation.

Depending on the size of the wind farm, the entire construction phase usually takes about two years, and during that time Eero’s workdays vary considerably from one day to the next. As the situation requires, his workstation varies between the office and the construction site – between Oulu and Vaala.

"I enjoy the fact that at the construction site I can get my ‘hands dirty’ and be in the heart of the action. On the other hand, I manage the big picture ranging from construction contracts to calculations, and vision for the future. One of the most interesting moments, however, is climbing to the tower of a finished wind turbine. It is fantastic to visit the top."

Schroderus, a family-owned company in Vuolijoki, has been involved in many of the construction phases. Jan and Joni Schroderus in the photo. Photo: Petteri Löppönen

Local businesses invaluable help

The extensive construction project at Metsälamminkangas has also brought work and activity to Vaala and the surrounding municipalities. Although some of the builders are specialists from further away, local know-how and services have been needed for earth works and construction site services. Among other things, companies in the area have supplied construction site machinery, transport equipment and drivers. Drivers have come from Paltamo, Muhos, Kajaani, Oulu and Vuolijoki. In addition, local accommodation services, restaurants, and cleaning services have been needed.

Schroderus, a family-owned company in Vuolijoki, has been involved in many of the construction phases. The company is run by brothers Jan and Joni and father Jouko Schroderus.

"The workload and range of work at the wind farm have been a positive surprise to us. At first there was discussion that we would only help from time to time, but in the end, we have had two to five men constantly at the site. This is also why we have hired more staff," says Jan Schroderus. Brother Joni adds:

"We have tried to provide a solution for all the needs that arise. Among other things, we have managed water pumping and ensured that the turbine foundations remain dry, taken care of the construction site's water and fuel supply as well as road maintenance and plowing, installed fences and signage, handled the site's internal freight transport and repaired construction machinery and equipment. In addition, we rented out two tractors to the site."

The Schroderus brothers think it is a great thing that the construction of wind power has employed people in the area. The project has also been a good experience in group spirit.

"It has been great to be involved in this project because of the team spirit at the site. All companies and employees have pulled together, and everyone wants to do their best. If the opportunity arises, we will be happy to be involved in similar projects again," the brothers conclude.

Local businesses invaluable help

Schroderus, a family-owned company in Vuolijoki, has been involved in many of the construction phases. Jan and Joni Schroderus in the photo. Photo: Petteri Löppönen

The extensive construction project at Metsälamminkangas has also brought work and activity to Vaala and the surrounding municipalities. Although some of the builders are specialists from further away, local know-how and services have been needed for earth works and construction site services. Among other things, companies in the area have supplied construction site machinery, transport equipment and drivers. Drivers have come from Paltamo, Muhos, Kajaani, Oulu and Vuolijoki. In addition, local accommodation services, restaurants, and cleaning services have been needed.

Schroderus, a family-owned company in Vuolijoki, has been involved in many of the construction phases. The company is run by brothers Jan and Joni and father Jouko Schroderus.

"The workload and range of work at the wind farm have been a positive surprise to us. At first there was discussion that we would only help from time to time, but in the end, we have had two to five men constantly at the site. This is also why we have hired more staff," says Jan Schroderus. Brother Joni adds:

"We have tried to provide a solution for all the needs that arise. Among other things, we have managed water pumping and ensured that the turbine foundations remain dry, taken care of the construction site's water and fuel supply as well as road maintenance and plowing, installed fences and signage, handled the site's internal freight transport and repaired construction machinery and equipment. In addition, we rented out two tractors to the site."

The Schroderus brothers think it is a great thing that the construction of wind power has employed people in the area. The project has also been a good experience in group spirit.

"It has been great to be involved in this project because of the team spirit at the site. All companies and employees have pulled together, and everyone wants to do their best. If the opportunity arises, we will be happy to be involved in similar projects again," the brothers conclude.

If you want to know more of Metsälamminkangas wind farm, please visit the project page:

Metsälamminkangas project

If you want to know more of Metsälamminkangas wind farm, please visit the project page:

Metsälamminkangas project