Gasgrid Finland has updated the route plan for the national hydrogen transmission network. The updates aim to minimize the impact on residential areas, groundwater, the environment, and other forms of land use. The most significant reason for the changes is the feedback received from landowners, local residents, and other stakeholders. The project's technical feasibility study has been completed, confirming that the project is technically feasible and has strong market potential.
Route planning for the transmission network at Gasgrid is currently at the environmental impact assessment (EIA) stage. As the planning progresses, the route will be refined in collaboration with landowners, local authorities, and other stakeholders to minimize the impact on the environment and other land uses.
Behind the scenes: thousands of meetings and many constructive discussions
Since September 2025, more than 50 consultation events have been held in connection with the route planning. Some of these were invitation-only events for landowners, while others were open to the public as part of the environmental impact assessment process. Participation was active at all events, and many important discussions took place. In total, over 6,000 people attended the events. At these events, the project received both support and criticism, and Gasgrid is keen to continue close dialogue with landowners along the route. Further meetings will be organized regionally and online during the coming autumn.
Changes in every EIA area
The underground pipeline will run from Sea Lapland to Southern Finland, and its planning is progressing in stages, area by area. An updated route plan was published on August 10, 2026, and feedback on this can be submitted to Gasgrid in the same way as before. The route plan may be refined in later project phases.
Numerous changes based on stakeholder feedback
Almost 200 changes have been made to the original route plan. In addition, the route passes through new areas for a total of approximately 260 kilometers. The total length of the routes under consideration in the EIA procedures is now approximately 1,750 kilometers. The most significant proposed changes are located in Tornio, Kalajoki, Kannus, Närpiö, Kristiinankaupunki, Huittinen, Loimaa, Raisio, Salo, Raasepori, Inkoo, Loppi, Tammela, and Porvoo.
Many of the changes are based on feedback from landowners and statements from local authorities. Changes have also been made on the basis of feedback received during nature and archaeological surveys that have already been carried out, as well as during the environmental impact assessment.
Opportunity to provide feedback and upcoming consultation events
Gasgrid will inform landowners along the route of the plan by letter. In the case of estates of deceased persons, the letter will be sent to the contact person listed in the National Land Survey of Finland’s records. The letter will be sent both to landowners along the updated route and to those landowners from whose land the route has been removed as a result of the updates.
During the autumn, Gasgrid will organize discussion and project presentation events specifically tailored to the needs of new landowners. The events will be held in Kemi, Oulu, Kokkola, Pedersöre, Närpiö, Raisio, Loimaa, Salo, Loppi, Sipoo, and Raasepori. In addition, webinars on the route update will be organized for all landowners.
Details of the events can be found in the letters sent to landowners. Information on the nationwide landowner webinars can be found on Gasgrid’s website.
Route review and feedback survey
The updated route plan is available for viewing on Gasgrid’s website. The map view can be zoomed in to the property level. Feedback on the route can also be provided via the map service. According to current estimates, feedback will be collected until the conclusion of the EIA consultation process, i.e., until approximately spring 2027. The service allows users to make annotations on the map and submit information, which will be reviewed as part of Gasgrid’s route planning. Every piece of feedback is read, and the information is utilized in the next planning phase. Local information that affects the route alignment is particularly valuable, such as details of a property’s drainage systems, wells, or areas used for the extraction of soil and aggregate. The environmental impact assessment for the updated route will be presented in the EIA reports, for which the estimated public consultation period is due to begin in early 2027.
Route plan on the map: www.gasgrid.fi/karttapalaute
For more information, visit BotH₂nia.
Originally published on August 13, 2026 by BotH₂nia.
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