KUOPIO, Finland — More than 2,000 people gathered in Kuopio on Wednesday, September 2, for Shelter 2026, a large-scale civil defence exercise designed to test how Finland could protect a large population during serious disruptions and emergency conditions.

The two-day exercise, taking place on September 2–3 at Savilahti's Luola, brings together authorities, rescue services, volunteers, businesses, educational institutions and other regional and national organisations.

According to the City of Kuopio, the exercise is exceptionally large by Finnish standards and is the largest civil defence exercise of its kind seen in Finland in decades. The exercise is testing not only shelters themselves but also cooperation, command structures, communications and decision-making when normal services are disrupted.

A Shelter Hidden Beneath Kuopio

At the centre of the exercise is Luola, an underground facility in Savilahti that normally operates as a sports and events venue.

The facility can be converted into a civil defence shelter capable of accommodating approximately 7,000 people.

During Shelter 2026, participants are practising how the facility could be transformed from an everyday sports and events space into an operational civil defence shelter.

The exercise tests practical issues such as how people enter and move into shelter, how shelter operations are organised and how authorities maintain communications and a shared picture of the situation.

The City of Kuopio describes Luola as one of Europe's most modern dual-use civil defence shelters.

What Is Being Simulated?

Shelter 2026 is not simply a demonstration of an underground shelter.

The exercise is designed around situations in which normal societal functions have been disrupted.

The organisers are testing how authorities and other organisations would work together when communities face serious disturbances or emergency conditions.

The exercise focuses on:

1. Protecting a large number of people
2. Cooperation between authorities and regional organisations
3. Command and decision-making
4. Maintaining a shared situational picture
5. Communications during disruptions
6. Practical civil defence operations
7. The use of shelters during emergency conditions

More than 2,000 participants are involved, including personnel from the North Savo rescue services, the City of Kuopio, authorities, voluntary organisations, companies and educational institutions.

A Nuclear or Military Attack Is Not Being Predicted

Despite the military-style preparedness activities, officials have stressed an important point: Shelter 2026 is a planned training exercise and is not connected to any real threat or emergency situation.

The increased presence of authorities, emergency equipment and large groups of people around Savilahti on September 2–3 is therefore part of the exercise.

The purpose is to rehearse what could happen during a major disruption so that authorities and communities are better prepared if a real emergency occurs.

Finland's 72-Hour Preparedness Principle

The exercise also highlights Finland's wider approach to civil preparedness.

Finnish authorities encourage households to be able to manage independently for at least 72 hours during a serious disruption.

This can become important if electricity, water, telecommunications, transport or other essential services are temporarily unavailable.

The Shelter 2026 organisers are using the exercise to reinforce this culture of preparedness and to develop practical civil defence procedures.

Why Kuopio?

Kuopio provides an unusual combination of underground infrastructure, public authorities, educational institutions and safety expertise.

The Savilahti area is also home to educational and research organisations, making it possible to involve students and other members of the community in the exercise.

Schools and educational institutions are among the participants, giving younger people an opportunity to learn what they might need to do during a serious emergency.

The exercise therefore goes beyond military preparedness. It is based on the Finnish concept of comprehensive security, in which authorities, businesses, organisations and ordinary citizens all have roles in maintaining society's ability to function.

Lessons From Ukraine and Modern Threats

The exercise comes at a time when European countries are paying greater attention to civil defence and societal resilience.

Russia's war against Ukraine has highlighted the importance of civilian shelters, emergency communications and the ability of communities to continue functioning during attacks and infrastructure disruptions.

Finland is also increasingly focused on threats that do not necessarily involve conventional military attacks, including cyberattacks, disruption of critical infrastructure and other forms of hybrid interference.

Shelter 2026 gives Finnish authorities and other organisations an opportunity to practise how they would respond collectively to such situations.

The Public Was Also Invited

The exercise was not completely closed to the public.

On September 2, the City of Kuopio streamed parts of the exercise, allowing people to see how the underground facility operates when converted into a civil defence shelter.

An open-house event was also held at Luola from 5 p.m. to 7 p.m., giving visitors an opportunity to learn about civil defence, emergency preparedness and household emergency supplies.

A Message for Ordinary Finns

One of the most important messages from Shelter 2026 is that civil defence is not only the responsibility of emergency services. Finland's preparedness model relies on cooperation between authorities and society.

The exercise demonstrates how an ordinary sports and events facility can be transformed into a large emergency shelter — and how thousands of people could potentially be accommodated and supported underground.

With more than 2,000 people participating, a shelter designed for around 7,000 people and a focus on the 72-hour preparedness principle, Shelter 2026 is a powerful demonstration of Finland's long-standing culture of preparedness.

Key Data

These figures come primarily from the City of Kuopio's official Shelter 2026 information.

Sources

1. https://www.kuopio.fi/en/shelter2026/
2. https://www.kuopio.fi/en/2026/08/28/shelter-2026-also-invites-the-public-to-take-part-follow-the-exercise-via-a-live-broadcast-and-come-explore-the-luola-cave-transformed-into-a-civil-defense-shelter/
3. https://apnews.com/article/finland-russia-civil-defense-cyberattack-sabotage-3ea6f75d826669c6be138a0496934b5b
4. https://www.euronews.com/my-europe/2026/09/03/with-an-eye-on-russia-finland-runs-europes-largest-civil-defence-exercise-since-wwii