The application phase of the Helsinki Energy Challenge ended on 30 September. The competition inspired 252 teams from 35 countries from around the world to participate. The participating teams presented their proposals on how Helsinki can stop using coal for heat production as sustainably as possible by 2029 and speed up its journey to becoming carbon-neutral by 2035.
The Helsinki Energy Challenge received a higher number of proposals than expected. Competition entries came from different parts of the world, from 35 countries in total – the majority from Finland, Austria, Sweden, the US, Germany, the UK and Canada. Many of the participating teams are great examples of cross-disciplinary and international competence – the competition inspired innovators from around the world to join forces.

The proposals entered in the competition involve  several different types of solutions and plenty of brand new ideas and concepts. They include solutions in which existing technology is combined or used in new ways, as well as proposals that involve technological or non-technological innovations.

“ I’m extremely happy that the Helsinki Energy Challenge that I launched reached this much interest both here in Finland and in other parts of the world. During the discussions held in the first phase of the Challenge, it became obvious how extraordinary project we have launched and how many positive things it has brought in these otherwise difficult times. With the help of this competition, we wanted not only to find answers to our own energy challenge, but also to offer Helsinki as a platform where new, sustainable and future-proof solutions can be built. It seems we have succeeded in this extremely well, as well as in our goal to give rise to discussion and new kind of thinking on this important topic, both nationally and internationally. Climate change is a global crisis, which we can manage only by clearly raising the level of ambition. I’m glad that many of my colleagues from around the world have expressed their wish to follow our example and are looking forward to the lessons and solutions gained from the Helsinki Energy Challenge,” says Mayor of Helsinki Jan Vapaavuori.

“We are extremely positively surprised by the exceptional teams formed through the Helsinki Energy Challenge. These teams surely have the potential to produce creative and critical innovations also in the future, for the needs of other cities as well. The competition has also created completely new type of collaboration between Finnish and international innovators. Hopefully, this will create new international opportunities for  these teams in the future. Helsinki Energy Challenge is not only a challenge competition, but also an innovative public procurement process. This is why we unfortunately cannot publish the content of the solutions yet. However, I dare to say  already that the Helsinki Energy Challenge will have many positive effects that we may not have even anticipated,” says Project Director of Helsinki Energy Challenge Laura Uuttu-Deschryvere

Finalists selected in November

The entries will be evaluated during October and finalist teams selected early November. The evaluation criteria include the proposed solution’s climate impact, impact on natural resources, cost impact, implementation schedule and feasibility, security of supply, and capacity. The evaluation process will use the help of experts from various organisations to ensure that the best solutions will move to the next phase of the competition process.

A maximum of 15 teams will be selected for the final phase of the Helsinki Energy Challenge.. These teams will be invited to the co-creation phase during which they will receive support for further developing their solutions, as well as additional information for  tailoring their idea even better for the context of Helsinki.

The international jury will evaluate the final proposals of the finalist teams in the beginning of 2021 andthe winner will be announced in March 2021. The City of Helsinki lives up to its global responsibility in the fight against climate change and is committed to sharing the results of the competition openly, in order to allow other cities to benefit from them in their own climate work. 

Cities have a key role – the COVID-19 pandemic will not stop Helsinki’s climate work

Climate change is the biggest challenge of our time, and cities have a decisive role in mitigating it. Despite the COVID-19 pandemic, the City of Helsinki keeps investing heavily in its climate work. The climate crisis has not been cancelled and the City of Helsinki is working its way towards a carbon neutral Helsinki by 2035. At the moment, more than half of Helsinki’s direct carbon dioxide emissions originate from heating the city. This is why finding a sustainable heating solution will have a critical impact on achieving the City’s carbon neutrality goal. Currently, more than half of Helsinki’s heating energy is produced with coal, the use of which will have to stop by 2029. Helsinki wants to find long-term sustainable solutions, which is why it does not want to replace the use of coal with biomass-fired production.

Helsinki wants to find long-term sustainable solutions to heat the city in the future and to act as a platform for new and innovative solutions that also other cities around the world can benefit from. For this purpose, it opened the international Helsinki Energy Challenge competition on 27 February 2020. The competition seeks solutions through which the city can be heated sustainably in the coming decades – without coal and with as little biomass as possible. The competition’s first prize is one million euros. 

More information:

Project Director Laura Uuttu-Deschryvere, City of Helsinki, Helsinki Energy Challenge, tel. +358 (0)40 717 6415, laura.uuttu-deschryvere ( at )

Interview requests for the Mayor: Special Adviser Lotta Backlund, tel. +358 (0)40 531 3076, lotta.backlund ( at ) 

The competition’s website:


Images on the City of Helsinki’s material bank: