Bydgoszcz, Poland
City population: 352085
Duration: 2013 – 2014
Implementation status: Completed
Scale: Sub-microscale: Street scale (including buildings)
Project area: 200 m2
Type of area: Building
Last updated: October 2021

The NBS is a 200 m² green roof created as a complementary element to the concept of a low-emission building of the Demonstration Centre of Renewable Energy Sources at the School of Mechanical Engineering No. 2 in Bydgoszcz. The roof serves as a recreational area for students and visitors, provides thermal insulation for the building, increases biodiversity and improves the image of the construction [1].

Green roofs in Bydgoszcz
Source: https://www.portalsamorzadowy.pl/inwestycje/centrum-demonstracyjne-oze-w-bydgoszczy,68106,65769.html

Overview

Nature-based solution

  • Nature on buildings (external)
  • Green roofs

Key challenges

  • Climate action for adaptation, resilience and mitigation (SDG 13)
  • Climate change adaptation
  • Green space, habitats and biodiversity (SDG 15)
  • Green space creation and/or management
  • Regeneration, land-use and urban development
  • Regulation of built environment
  • Promote natural styles of landscape design for urban development
  • Health and well-being (SDG 3)
  • Creation of opportunities for recreation

Focus

Creation of new green areas

Project objectives

1) Providing a green recreational area for students and visitors; 2) Thermal insulation of the building; 3) Introducing biodiversity to the building’s area; 4) Improving the aesthetics of the surroundings [1].

Implementation activities

1) Building a cross-section of the roof with the following specification: vegetation layer; light substrate layer - 5 cm, drainage mat system; absorbent geotextile layer; PE foil; thermal insulation, XPS200 - 35 cm; dowel layer from styrobetone; substrate layer 8 to 15 cm thick; 2) Installing benches; 3) The roof was constructed using plants that require low levels of water and nutritional ingredients [1].

Climate-focused activities

Climate change adaptation:

  • Implement green walls or roofs to lower indoor temperature and provide insulation

Main beneficiaries

  • Researchers/University
  • Citizens or community groups

Governance

Management set-up

  • Co-governance with government and non-government actors

Type of initiating organisation

  • Local government/municipality
  • Public sector institution

Participatory approaches/ community involvement

  • Dissemination of information and education

Details on the roles of the organisations involved in the project

The municipality participates in a larger international project on energy efficiency and it developed the initiative together with a local public school. The funding comes from EU funds [1].

Project implemented in response to ...

... an EU policy or strategy? Yes (In line with Directive 2010/31/ EC, which requires public buildings from 2019 (and from 2021 all newly built buildings) in the EU to have almost zero energy consumption, the city of Bydgoszcz is implementing an international project CEC5 titled: 'Demonstration of energy efficiency and utilisation of renewable energy sources through public buildings' . The green roof is a part of this local initiative (built on the roof of the Demonstration Center for the Renewable Energy Sources.(1))
... a national policy or strategy? Unknown
... a local policy or strategy? Unknown

Financing

Total cost

€100,000 - €500,000

Source(s) of funding

  • EU funds
  • Public local authority budget

Type of funding

  • Earmarked public budget
  • 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
  • Green space and habitat
  • Promotion of naturalistic styles of landscape design for urban development
  • Increased green space area
  • Reduced biodiversity loss

Economic impacts

  • Unknown

Socio-cultural impacts

  • Health and wellbeing
  • Gain in activities for recreation and exercise
  • Education
  • Increased support for education and scientific research
  • Increased awareness of NBS and their benefits

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