The grid is expanding at pace – where and why?

Building new transmission lines is an important step to improve the vitality of a municipality. Right now, many more connection enquiries are made than connections can be realised. Therefore, the main grid and its connections are only built where the customers have project permits and construction can begin
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A strong grid enables new industrial projects and investments in municipalities. It attracts businesses and creates jobs — strengthening the vitality of the region for decades to come. Many municipalities currently have hopes to strengthen the grid, and the green transition will increase needs.

Fingrid knows the wishes and needs of municipalities. The total volume of electricity production and consumption connection enquiries has reached 500,000 megawatts, which is an enormous number when Finland’s peak consumption is about 15,000 megawatts.

“We are building the main grid as projects mature.”

“Being prepared to satisfy everyone’s wishes is an impossible task. That is why we build the main grid as projects mature. Fingrid’s connection planning progresses side-by-side with projects, but not well in advance,” says Jussi Jyrinsalo, Senior Vice President at Fingrid.

When a region has more plans that are further advanced in permitting, it is more certain that users will come to the main grid and Fingrid can confidently prepare system reinforcements.

“If there are a large number of smaller project ideas coming to the same region, for example wind farms, it is not the end of the world for us if a single customer project goes under. But a big customer project, for example a large consumption site, can fall through for some reason, and then we will have invested in system reinforcements for no reason,” explains Jyrinsalo.

He hints that if a municipality wants a stronger main grid in its area, it should promote the permit procedures for electricity production and consumption projects and support projects in all possible ways. Fingrid should be kept up to date with the progress of the projects.

“Unfortunately, wishes to promote the vitality of a municipality and build a strong network in advance for possible future needs are not sufficient grounds. The necessary permits must exist, and the customer project must be advanced enough in order for the connection to be added to the network plan.”

Already EUR 4 billion in investments

Fingrid’s investments have grown tremendously with the green transition. Over the next 10 years, Fingrid will invest approximately EUR 4 billion in the grid. In the previous 10-year development plan, the figure was EUR 2 billion.

Investments are needed, as the grid is being strenghtened from the west and north to the south: The west coast has wind power, complemented by electricity imports from Sweden, and in Southern Finland, the need for electrical power is growing constantly.

“The capacity of the main grid from the north to the south should double in ten years, which means several new 400 kilovolt transmission lines,” Jussi Jyrinsalo mentions.

Residents and decision-makers are consulted


A new transmission line project is a significant opportunity for municipalities to develop the infrastructure and increase regional vitality. Residents and landowners, on the other hand, can be upset by large construction projects, as construction sites primarily travel through private land.

However, all parties are consulted at different stages in design and construction, and then municipal residents can share their views. Involvement and interaction with locals are key to the success of the project.

“Our goal is that a transmission line project serves local needs and the interest of society as a whole.”

“We want to hear a wide range of comments from local residents and municipal decision-makers. Everyone’s opinion is important because our goal is to achieve the best possible solution that takes into account different interests. Not all environmental impacts are visible from a computer, and we generally do not know the areas ourselves,” says Expert Eero Kujanen of Fingrid.

A main grid construction project is initiated through an EIA, which looks at the impact of the project on the environment, land use and social life. The EIA is a tool for planning transmission line routes. The process is designed to ensure that local views and regional needs are taken into account.

Fingrid expropriates the right to use land for the grid in return for the compensation specified by law. The Expropriation Act will be reformed to increase the compensation by 25%.

“The purpose of the expropriation procedure is to compensate the landowner for all financial losses. In addition, the amendment to the Expropriation Act provides extra compensation. Although the situation is not always easy, we believe that the reform will increase the sense of justice — after all, the legal project has been pending for years,” says Kujanen.

Flexibility in Finland’s interests

Municipal town planning is emphasised in transmission line projects. Careful town planning that takes into account the long-term needs of the main grid makes it easier to build transmission lines and improves the municipality’s land use planning.

“Our goal is that a transmission line project serves both local needs and the interest of the whole society,” says Kujanen.

Also, the reliability of the grid should be ensured, even though transmissions are growing steadily and there are increasing numbers of users. Many types of flexibility in both electricity consumption and production are becoming more valuable.’

“More flexibility is now required in order for Finland to succeed. For example, the locations of projects should be considered from this point of view: if, for example, an industrial plant needs to be located near a port, nothing can be done about it, but it would be possible to place a data centre or battery more freely,” Jyrinsalo adds.

High pressure to reinforce the grid

Eastern Finland is now facing large issues related to enabling new electricity production and consumption and the adequacy of the grid.

“Eastern Finland would require significant investments in the expansion and strengthening of the high-voltage power grid. The network infrastructure has been designed for consumption and not for production needs, but as demand for
clean energy production increases, the situation has changed,” says Arto Nieminen, CEO of Järvi-Suomen Energia Oy.

For example, wind power cannot be built in Eastern Finland on the same scale as in many other parts of Finland, because the power plants may interfere with border control and radar activities. Therefore, electricity must be imported from elsewhere.

According to Nieminen, merely expanding the main grid is not the only solution, because it is too expensive and would be insufficient. Functional regional and distribution networks are also required.

“The Electricity Markets Act imposes strict requirements on delivery reliability. That is why investments need to be systematic, long-term solutions.”

In order to improve the high-voltage regional network, approximately EUR 10 million of investments have been calculated annually in Järvi-Suomen Energia’s region over the next 13 years. Nieminen emphasises that public support is essential to the implementation of projects of this size.

“The clean transition will not proceed without working networks. Fingrid’s role is critical in the main grid, but investments in distribution and regional networks are also needed.”

Second connection to improve the security of supply

Also in Turku, the adequacy of the regional power grid has been considered. Turku is connected to the main grid at one point, but in the future, another connection would increase the security of supply and capacity.

“Turku is a growing city, and the green transition will certainly increase demand. The enquiries in Turku are for data centre and battery plans, but the main grid connection is becoming full,” says Tomi Toivonen, CEO of Sähköverkot Oy at Turku Energy.

Fingrid plans a connection to Raisio in 2031 and, according to Toivonen, it could offer Turku a solution to increasing demand.

“These long-term solutions support sustainable growth in the region,” Toivonen says.

He also hopes that if the main grid in the Turku area is strengthened in the coming years, it is important to check and, if necessary, strengthen and expand the 110 kilovolt distribution network.

Toivonen reminds municipal decision makers of the importance of active interaction also in the direction of the electricity distribution company.

“For example, discussions about data centres should start as early as possible so that we can take them into account in general and network planning. The permit processes should also be started in a timely manner so that construction is not delayed due to the permit procedures,” Toivonen says.

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