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Discover and solve: Urban challenges awaiting solution ideas

We recently hosted a workshop at FinEst Centre for Smart Cities for the 4th round of Smart City Challenge, to further explore the 34 urban challenges submitted by 24 cities across 15 countries.

In this round, we have 3.7 million euros in funding for four pilot projects focused on an interdisciplinary approach to developing novel solutions and improving the quality of life in urban areas. All pilot projects are expected to commence in September 2025.

In May, we entered the next phase of the challenge. See below to learn how you can participate if you are a city, municipality, or campus representative, researcher, developer, or entrepreneur in any of the fields seeking solutions.

Smart City Challenge: 3.7M euros to solve urban challenges with cities, researchers and companies

The diverse international pool of challenges highlights a common theme: transitioning towards climate neutrality and creating better living environments for citizens. Here’s a breakdown of the collected challenges:

Energy: Nine challenges focus on empowering energy communities, enhancing the effectiveness of street lighting, addressing energy dependence of critical infrastructure, and improving indoor climate control through room-based systems.

Mobility: Five challenges address various aspects of transportation, including water travel, sidewalk mobility, assisting the hearing impaired in public transport, passenger counting for better planning, and improved parking management.

Circular Economy: Three challenges tackle issues like food waste reduction, repurposing old buildings, and engaging citizens in circular economy practices.

City Planning: Eight challenges target different city planning issues, such as mapping underground structures (including tree roots), providing affordable housing, managing empty commercial real estate, and handling cities under constant construction.

City Maintenance: Five challenges focus on flood resilience, protecting river shores, detecting street markings, monitoring city temperatures, and maintaining green spaces in challenging areas.

People-Centered City: Five challenges emphasize developing urban spaces that support well-being and health, improving communication with citizens, and providing assistance during crises.

Explore challenges in more detail.

Cities, vote for challenges! Interdisciplinary challenges across six key areas

To really understand which of the challenges are relevant for many cities across countries, we invite all city representatives to select up to five challenges from the list that are also very important for your area. If a good solution is proposed, you could have the opportunity of piloting it in your city, county, or campus.

Here’s what to remember:

  • Please do not vote for the challenges your city, county, or campus has submitted, as you cannot pilot the same solution twice.
  • Only the challenges that have interest from at least one city in Estonia and one from another country will proceed in the Smart City Challenge process.
  • Each city, county, or campus has a total of five votes. Please coordinate within your team to decide how to allocate your votes and vote here.
  • Last day to vote is June 18.

Call for researchers and entrepreneurs: Explore the challenges and propose solution ideas

Researchers and entrepreneurs can familiarize themselves with the challenges and assess if they can provide solutions to any of them.

If you identify opportunities, we encourage to contact the cities via e-mails next to the challenge to discuss your solution ideas and find out more about their challenge in practice. The deadline for proposing the initial ideas by the researchers is September 16.

Send your idea to solve one of the challenges on the template to smartcity@taltech.ee.

Companies’ representatives who see that building a solution to one of the challenges would enable to expand their product portfolio, collaborate with TalTech researchers to send your solution idea together. Please note that we cannot finance private companies as partners but you can join with your own financing and become the commercialization partner of the solution in the future.

If you missed the workshop on discovering submitted urban challenges in more detail, please see the recording (timestamps are in the video description).

The implementation of the pilot projects is financed by the “FinEst Centre for Smart Cities” project, funded by the European Regional Development Fund and the Estonian Ministry of Education and Research. 

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