Hanasaari Hanasaari

Hanasaari

Hanasaari Power Station reconstruction concept for Helsinki

Hanasaari B is a coal-fired cogeneration power plant in Kalasatama, Helsinki. The
plant started operation in 1974 and, after 50 years of operation, is being
decommissioned in 2023. Decommissioning the plant is a vital step in the City of
Helsinki’s ambitious goal of becoming carbon neutral by 2035. Due to its large size
and architectural quality, Hanasaari B has become a landmark in the Helsinki skyline
and the heart of residential developments in the Kalasatama area. The present vision
involves preserving architect Timo Penttilä’s original buildings – including subsequent
additions and alterations – as well as new compositions. Timo Penttilä successfully
lightened the appearance of the massive power plant by placing the heaviest
functions at the centre of the plant. He grouped secondary facilities such as offices,
coal conveyors and service buildings in smaller units around the generator building.
As a result, the cubic structures focusing on vertical façade surfaces rise like a great
urban sculpture in Helsinki’s industrial cityscape.
Energy production and consumption, as well as sustainability, form the
common threads for future use of the power station and connect it to the
neighbouring Energyblock.

Client
Helsinki City Planning Department
Competition
2018, 1st prize
Architects
Andrus Kõresaar, Lembit-Kaur Stöör, Raivo Kotov, Antti Pääsukene, Birte Böer, Nicola Smania
Interior architect
Xenia Sooniste
Size
109 500 m2
Interior view of Hanasaari Interior view of Hanasaari
Interior view of Hanasaari
View of north at winternight View of north at winternight
View of north at winternight
Waterfrontplaza Waterfrontplaza
Waterfrontplaza
View of skywalk and chimney View of skywalk and chimney
View of skywalk and chimney
View of energyblock and greenhouse View of energyblock and greenhouse
View of energyblock and greenhouse
View of north at summertime View of north at summertime
View of north at summertime
View of southcorner and sphere View of southcorner and sphere
View of southcorner and sphere
Aerial view of Hanasaari Aerial view of Hanasaari
Aerial view of Hanasaari
View of energyblock at night View of energyblock at night
View of energyblock at night
View of waterfront View of waterfront
View of waterfront
View of skatepark View of skatepark
View of skatepark
Hanasaari scheme Hanasaari scheme
Hanasaari scheme
The idea The idea
The idea

 

1.     Saving and preserving old power plant as a city quarter composition

Opening the full length of the ground floor to the street

edge. This will make the quarter and buildings approachable

and to create diverse ways to accesses to the core space.

 

2.     Saving and preserving old t. Penttilä Power plant as a city quarter composition

Placing new volumes on top of and in the voids between the power plant

structures. This will strengthen the landmark and its silhouette.

 

 

3.     Partly perserving the power plant

Preserving the structural skeletons of the larger buildings and

replacing their closed façade surfaces with modern materials.

This will ensure a flexible and contemporary functions.

3D model 3D model
3D model
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