Stuttgart, Germany
City population: 581386
Duration: 2007 – 2009
Implementation status: Completed
Scale: Sub-microscale: Street scale (including buildings)
Project area: 9500 m2
Type of area: Building
Last updated: October 2021

The 16-storey EnBW Administrative Complex and planned office district in Stuttgart's industrial area of Fasanenhof has three wings and a high-rise for about 2,000 employees on the 35,000 square meter sites, with many extensive green roofs and usable intensive roofs over underground parking. With the new office complex, EnBW wanted to create a modern and pioneering work environment for its employees. Different green system solutions were used on the project including a "Natural Roof", "Garden Roof", "Public Roof" and "Landscape Roof", with both extensive as well as walk-intensive plantings. The resulting green roofs offer respite and recreation for employees and visitors. [ref 1, 2]

The Green Roofs at the EnBW Administrative Complex
OPTIGRÜN, retrieved 08/30/2018 from https://www.optigreen.com/references/nature-roof/project-nr-3/

Overview

Nature-based solution

  • Nature on buildings (external)
  • Green roofs

Key challenges

  • Climate action for adaptation, resilience and mitigation (SDG 13)
  • Climate change mitigation
  • Green space, habitats and biodiversity (SDG 15)
  • Green space creation and/or management
  • Regeneration, land-use and urban development
  • Regulation of built environment
  • Health and well-being (SDG 3)
  • Improving mental health
  • Creation of opportunities for recreation
  • Sustainable consumption and production (SDG 12)
  • Sustainable consumption

Focus

Creation of new green areas

Project objectives

The objectives for the projects were: 1. With the new office complex, EnBW wanted to create a modern and pioneering work environment for their employees and offer recreation to visitors. 2. Help reducing heat radiation and improve insulation from heat and cold. 3. To take special measures for the tallest building to withstand wind uplift forces, here visitors can enjoy stunning views over all the other roofs and green roofs. 4. Create a modern, functional and energy-efficient building. [ref 1, 2, 3, 4]

Implementation activities

"From March 2008 to January 2009, a total of approximately 9,500 square meters of green roof area with several components were constructed in different ways - with both extensive as well as walk-intensive plantings. These traffic areas include decking, maintenance of pathways and preventive measures for wind uplift in the corner and edge areas of the taller buildings. Basement areas (top of underground parking) are open to the public, while the top-level extensive green roofs are not accessible." The tallest building, the 60-meter high skyscraper, was planted under special measures to withstand wind uplift forces. The other three 6-story office buildings are greened with major extensive greening in different vegetation types (3 x 1,500 m) and smaller intensive roof gardens (3 x 100 m)". [ref 1]

Climate-focused activities

Climate change mitigation:

  • Install vertical or horizontal artificial surfaces that help with carbon storage and cooling

Main beneficiaries

  • Private sector/Corporate/Company
  • Citizens or community groups

Governance

Management set-up

  • Led by non-government actors

Type of initiating organisation

  • Private sector/corporate actor/company

Participatory approaches/ community involvement

  • Unknown

Details on the roles of the organisations involved in the project

The complex is owned by EnBW City GmbH & Co. KG. The green roofs were designed by architects RKW Rhode Kellermann Wawrowsky. The manufacturer of the green roof was Optigreen International AG with the contract for the installation awarded to the local Optigreen partner, Garten Moser of Reutlingen. [ref 1]

Project implemented in response to ...

... an EU policy or strategy? Unknown
... a national policy or strategy? Yes (EnBW City uses energy intelligently and efficiently and exceeds the strict requirements of the Energy Conservation Act. The heart of the building is the boiler room; 98 probes were drilled into the earth. Geothermal energy accounts for 40 percent of heating and 60 percent of cooling energy. [ref 1])
... a local policy or strategy? Unknown

Financing

Total cost

Unknown

Source(s) of funding

  • Corporate investment

Type of funding

  • Direct funding (grants, subsidies, or self-financed projects by private entities)

Non-financial contribution

Unknown

Impacts and Monitoring

Environmental impacts

  • Climate change
  • Lowered local temperature
  • Environmental quality
  • Improved air quality
  • Green space and habitat
  • Increased green space area
  • Reduced biodiversity loss
  • Increased number of species present

Economic impacts

  • Reduce financial cost for urban management

Socio-cultural impacts

  • Social justice and cohesion
  • Improved access to urban green space
  • Health and wellbeing
  • Improved mental health
  • Gain in activities for recreation and exercise

Type of reported impacts

Achieved impacts

Presence of formal monitoring system

Unknown

Presence of indicators used in reporting

No evidence in public records

Presence of monitoring/ evaluation reports

No evidence in public records

Availability of a web-based monitoring tool

No evidence in public records

References

The Green Roofs at the EnBW Administrative Complex
OPTIGRÜN, retrieved 08/30/2018 from https://www.optigreen.com/references/nature-roof/project-nr-3/