Hammerby Sjöstad – Stockholm

Hammerby sjöstad, picture by Ö.Svane

Hammerby sjöstad, picture by Ö.Svane

Hammarby Sjöstad is a new district in Stockholm. For its development the City has imposed tough environmental requirements on buildings,technical installations and the traffic environment. The Stockholm Water Company, Fortum and the Stockholm Waste Management Administration have jointly developed a common eco-cycle model designed to ensure organic recycling throughout Hammarby Sjöstad (http://www.hammarbysjostad.se/).

Goals
The vision of Hammerby Sjöstad was to redevelop and transform old brownfield sites into attractive residential areas with parks and green public spaces. The overall environmental goal is that the impact placed on the environment by emissions from Hammarby Sjöstad shall be 50 per cent lower than the corresponding level for newly constructed housing areas dating from the early 1990s in Stockholm.

Planning processes
There is a center (GlashusEtt) for environmental information and communication in Hammarby Sjöstad. The residents’ involvement is an important part of the environmental work. The center provides advice on how to have less environmental impact and conserve resources among other things (www.hammerbysjostad.se).

Energy
The main source of heating in Hammarby Sjöstad, is district heating. 34% of this heat comes from purified waste water, 47% from combustible household waste and 16% from bio fuel. (Numbers refer to 2002.)
Different solutions for supplying energy are tried out in Hammarby Sjöstad: two buildings with solar cells can be found on Sickla Kanalgata. The solar cells contribute by supplying electricity for the public areas in the building. One large residential building has been fitted with solar panels. These help supply the residents with 50% of the hot tap water they annually use.
Another interesting development project is the fuel cell which has been placed in GlashusEtt. The fuel cell could be described as a battery which, instead of being charged, runs off of fuel (e.g. hydrogen gas). The fuel cell generates electricity and heat.
Approximately 900 flats in Hammarby Sjöstad have biogas cookers. The biogas comes from waste water treatment. Amazingly, the biogas “produced” by the average family through waste water is close to equal to the amount of biogas they use for cooking. By replacing the electricity for the cookers with biogas, the electricity consumption has been lowered by 20% in the buildings in question (www.hammarbysjostad.se).

Transport
Fast, attractive public transport combined with car pools and cycle paths, in order to reduce private car usage.

Waste
Waste is thoroughly sorted in practical systems, with material and energy recycling maximised wherever possible.
In courtyard chutes, the residents can leave combustible household waste and food waste. The waste is collected via an automated underground pneumatic system. Other waste, such as paper, metal, glass and plastic packaging material is collected in block-based recycling rooms. Bulky waste is also collected in these rooms.Hazardous waste is collected at an area-based hazardous waste collection point.

Water
Water & sewage should be as clean and efficient as possible with the aid of new technology for water saving and sewage treatment. Water consumption shall be reduced to 100 litres per person per day. 95% of the phosphorus in wastewater shall be re-usable on agricultural land. The quantity of environmentally harmful substances in the wastewater shall be reduced by 50%.

Literature
Websites
www.hammarbysjostad.se


Architectural journals

– A + U: architecture and urbanism, 2005 Mar., n.3(414)
– Bauwelt, 2005 Feb.4, v.96, n.6, p.12-14
– Byggekunst: the Norwegian review of architecture, 2003, v.85, n.5, p.12-15
– Arkitektur: the Swedish review of architecture, 2002 Sept., v.102, n.6, p.34-39
– Arkitektur 2001 Nr.6 Side 18-39
– Mama 1998 (feb) Nr.22 Side 22-26
– Form 2002 Nr.5 Side 62-73

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